log_event.cc 268 KB
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/* Copyright (C) 2000-2004 MySQL AB
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   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; version 2 of the License.
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   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */


#ifndef MYSQL_CLIENT
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#ifdef USE_PRAGMA_IMPLEMENTATION
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#pragma implementation				// gcc: Class implementation
#endif
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#include "mysql_priv.h"
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#include "slave.h"
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#include "rpl_rli.h"
#include "rpl_mi.h"
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#include "rpl_filter.h"
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#include "rpl_utility.h"
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#include "rpl_record.h"
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#include <my_dir.h>
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#endif /* MYSQL_CLIENT */
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#include <base64.h>
#include <my_bitmap.h>
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#define log_cs	&my_charset_latin1
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#define FLAGSTR(V,F) ((V)&(F)?#F" ":"")

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/*
  Size of buffer for printing a double in format %.<PREC>g

  optional '-' + optional zero + '.'  + PREC digits + 'e' + sign +
  exponent digits + '\0'
*/
#define FMT_G_BUFSIZE(PREC) (3 + (PREC) + 5 + 1)


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#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
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static const char *HA_ERR(int i)
{
  switch (i) {
  case HA_ERR_KEY_NOT_FOUND: return "HA_ERR_KEY_NOT_FOUND";
  case HA_ERR_FOUND_DUPP_KEY: return "HA_ERR_FOUND_DUPP_KEY";
  case HA_ERR_RECORD_CHANGED: return "HA_ERR_RECORD_CHANGED";
  case HA_ERR_WRONG_INDEX: return "HA_ERR_WRONG_INDEX";
  case HA_ERR_CRASHED: return "HA_ERR_CRASHED";
  case HA_ERR_WRONG_IN_RECORD: return "HA_ERR_WRONG_IN_RECORD";
  case HA_ERR_OUT_OF_MEM: return "HA_ERR_OUT_OF_MEM";
  case HA_ERR_NOT_A_TABLE: return "HA_ERR_NOT_A_TABLE";
  case HA_ERR_WRONG_COMMAND: return "HA_ERR_WRONG_COMMAND";
  case HA_ERR_OLD_FILE: return "HA_ERR_OLD_FILE";
  case HA_ERR_NO_ACTIVE_RECORD: return "HA_ERR_NO_ACTIVE_RECORD";
  case HA_ERR_RECORD_DELETED: return "HA_ERR_RECORD_DELETED";
  case HA_ERR_RECORD_FILE_FULL: return "HA_ERR_RECORD_FILE_FULL";
  case HA_ERR_INDEX_FILE_FULL: return "HA_ERR_INDEX_FILE_FULL";
  case HA_ERR_END_OF_FILE: return "HA_ERR_END_OF_FILE";
  case HA_ERR_UNSUPPORTED: return "HA_ERR_UNSUPPORTED";
  case HA_ERR_TO_BIG_ROW: return "HA_ERR_TO_BIG_ROW";
  case HA_WRONG_CREATE_OPTION: return "HA_WRONG_CREATE_OPTION";
  case HA_ERR_FOUND_DUPP_UNIQUE: return "HA_ERR_FOUND_DUPP_UNIQUE";
  case HA_ERR_UNKNOWN_CHARSET: return "HA_ERR_UNKNOWN_CHARSET";
  case HA_ERR_WRONG_MRG_TABLE_DEF: return "HA_ERR_WRONG_MRG_TABLE_DEF";
  case HA_ERR_CRASHED_ON_REPAIR: return "HA_ERR_CRASHED_ON_REPAIR";
  case HA_ERR_CRASHED_ON_USAGE: return "HA_ERR_CRASHED_ON_USAGE";
  case HA_ERR_LOCK_WAIT_TIMEOUT: return "HA_ERR_LOCK_WAIT_TIMEOUT";
  case HA_ERR_LOCK_TABLE_FULL: return "HA_ERR_LOCK_TABLE_FULL";
  case HA_ERR_READ_ONLY_TRANSACTION: return "HA_ERR_READ_ONLY_TRANSACTION";
  case HA_ERR_LOCK_DEADLOCK: return "HA_ERR_LOCK_DEADLOCK";
  case HA_ERR_CANNOT_ADD_FOREIGN: return "HA_ERR_CANNOT_ADD_FOREIGN";
  case HA_ERR_NO_REFERENCED_ROW: return "HA_ERR_NO_REFERENCED_ROW";
  case HA_ERR_ROW_IS_REFERENCED: return "HA_ERR_ROW_IS_REFERENCED";
  case HA_ERR_NO_SAVEPOINT: return "HA_ERR_NO_SAVEPOINT";
  case HA_ERR_NON_UNIQUE_BLOCK_SIZE: return "HA_ERR_NON_UNIQUE_BLOCK_SIZE";
  case HA_ERR_NO_SUCH_TABLE: return "HA_ERR_NO_SUCH_TABLE";
  case HA_ERR_TABLE_EXIST: return "HA_ERR_TABLE_EXIST";
  case HA_ERR_NO_CONNECTION: return "HA_ERR_NO_CONNECTION";
  case HA_ERR_NULL_IN_SPATIAL: return "HA_ERR_NULL_IN_SPATIAL";
  case HA_ERR_TABLE_DEF_CHANGED: return "HA_ERR_TABLE_DEF_CHANGED";
  case HA_ERR_NO_PARTITION_FOUND: return "HA_ERR_NO_PARTITION_FOUND";
  case HA_ERR_RBR_LOGGING_FAILED: return "HA_ERR_RBR_LOGGING_FAILED";
  case HA_ERR_DROP_INDEX_FK: return "HA_ERR_DROP_INDEX_FK";
  case HA_ERR_FOREIGN_DUPLICATE_KEY: return "HA_ERR_FOREIGN_DUPLICATE_KEY";
  case HA_ERR_TABLE_NEEDS_UPGRADE: return "HA_ERR_TABLE_NEEDS_UPGRADE";
  case HA_ERR_TABLE_READONLY: return "HA_ERR_TABLE_READONLY";
  case HA_ERR_AUTOINC_READ_FAILED: return "HA_ERR_AUTOINC_READ_FAILED";
  case HA_ERR_AUTOINC_ERANGE: return "HA_ERR_AUTOINC_ERANGE";
  case HA_ERR_GENERIC: return "HA_ERR_GENERIC";
  case HA_ERR_RECORD_IS_THE_SAME: return "HA_ERR_RECORD_IS_THE_SAME";
  case HA_ERR_LOGGING_IMPOSSIBLE: return "HA_ERR_LOGGING_IMPOSSIBLE";
  case HA_ERR_CORRUPT_EVENT: return "HA_ERR_CORRUPT_EVENT";
  }
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  return 0;
}

/**
   macro to call from different branches of Rows_log_event::do_apply_event
*/
static void inline slave_rows_error_report(enum loglevel level, int ha_error,
                                           Relay_log_info const *rli, THD *thd,
                                           TABLE *table, const char * type,
                                           const char *log_name, ulong pos)
{
  const char *handler_error=  HA_ERR(ha_error);
  rli->report(level, thd->net.last_errno,
              "Could not execute %s event on table %s.%s;"
              "%s%s handler error %s; "
              "the event's master log %s, end_log_pos %lu",
              type, table->s->db.str,
              table->s->table_name.str,
              thd->net.last_error[0] != 0 ? thd->net.last_error : "",
              thd->net.last_error[0] != 0 ? ";" : "",
              handler_error == NULL? "<unknown>" : handler_error,
              log_name, pos);
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}
#endif

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/*
  Cache that will automatically be written to a dedicated file on
  destruction.

  DESCRIPTION

 */
class Write_on_release_cache
{
public:
  enum flag
  {
    FLUSH_F
  };

  typedef unsigned short flag_set;

  /*
    Constructor.

    SYNOPSIS
      Write_on_release_cache
      cache  Pointer to cache to use
      file   File to write cache to upon destruction
      flags  Flags for the cache

    DESCRIPTION

      Class used to guarantee copy of cache to file before exiting the
      current block.  On successful copy of the cache, the cache will
      be reinited as a WRITE_CACHE.

      Currently, a pointer to the cache is provided in the
      constructor, but it would be possible to create a subclass
      holding the IO_CACHE itself.
   */
  Write_on_release_cache(IO_CACHE *cache, FILE *file, flag_set flags = 0)
    : m_cache(cache), m_file(file), m_flags(flags)
  {
    reinit_io_cache(m_cache, WRITE_CACHE, 0L, FALSE, TRUE);
  }

  ~Write_on_release_cache()
  {
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    copy_event_cache_to_file_and_reinit(m_cache, m_file);
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    if (m_flags | FLUSH_F)
      fflush(m_file);
  }

  /*
    Return a pointer to the internal IO_CACHE.

    SYNOPSIS
      operator&()

    DESCRIPTION
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      Function to return a pointer to the internal cache, so that the
      object can be treated as a IO_CACHE and used with the my_b_*
      IO_CACHE functions
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    RETURN VALUE
      A pointer to the internal IO_CACHE.
   */
  IO_CACHE *operator&()
  {
    return m_cache;
  }

private:
  // Hidden, to prevent usage.
  Write_on_release_cache(Write_on_release_cache const&);

  IO_CACHE *m_cache;
  FILE *m_file;
  flag_set m_flags;
};

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#ifndef DBUG_OFF
uint debug_not_change_ts_if_art_event= 1; // bug#29309 simulation
#endif
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/*
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  pretty_print_str()
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*/
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#ifdef MYSQL_CLIENT
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static void pretty_print_str(IO_CACHE* cache, char* str, int len)
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{
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  char* end = str + len;
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  my_b_printf(cache, "\'");
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  while (str < end)
  {
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    char c;
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    switch ((c=*str++)) {
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    case '\n': my_b_printf(cache, "\\n"); break;
    case '\r': my_b_printf(cache, "\\r"); break;
    case '\\': my_b_printf(cache, "\\\\"); break;
    case '\b': my_b_printf(cache, "\\b"); break;
    case '\t': my_b_printf(cache, "\\t"); break;
    case '\'': my_b_printf(cache, "\\'"); break;
    case 0   : my_b_printf(cache, "\\0"); break;
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    default:
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      my_b_printf(cache, "%c", c);
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      break;
    }
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  }
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  my_b_printf(cache, "\'");
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}
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#endif /* MYSQL_CLIENT */
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#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
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static void clear_all_errors(THD *thd, Relay_log_info *rli)
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{
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  thd->is_slave_error = 0;
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  thd->clear_error();
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  rli->clear_error();
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}

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/*
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  Ignore error code specified on command line
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*/
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inline int ignored_error_code(int err_code)
{
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#ifdef HAVE_NDB_BINLOG
  /*
    The following error codes are hard-coded and will always be ignored.
  */
  switch (err_code)
  {
  case ER_DB_CREATE_EXISTS:
  case ER_DB_DROP_EXISTS:
    return 1;
  default:
    /* Nothing to do */
    break;
  }
#endif
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  return ((err_code == ER_SLAVE_IGNORED_TABLE) ||
          (use_slave_mask && bitmap_is_set(&slave_error_mask, err_code)));
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}
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#endif
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/*
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  pretty_print_str()
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*/
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#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
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static char *pretty_print_str(char *packet, char *str, int len)
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{
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  char *end= str + len;
  char *pos= packet;
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  *pos++= '\'';
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  while (str < end)
  {
    char c;
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    switch ((c=*str++)) {
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    case '\n': *pos++= '\\'; *pos++= 'n'; break;
    case '\r': *pos++= '\\'; *pos++= 'r'; break;
    case '\\': *pos++= '\\'; *pos++= '\\'; break;
    case '\b': *pos++= '\\'; *pos++= 'b'; break;
    case '\t': *pos++= '\\'; *pos++= 't'; break;
    case '\'': *pos++= '\\'; *pos++= '\''; break;
    case 0   : *pos++= '\\'; *pos++= '0'; break;
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    default:
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      *pos++= c;
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      break;
    }
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  }
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  *pos++= '\'';
  return pos;
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}
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#endif /* !MYSQL_CLIENT */
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/*
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  Creates a temporary name for load data infile:

  SYNOPSIS
    slave_load_file_stem()
    buf		      Store new filename here
    file_id	      File_id (part of file name)
    event_server_id   Event_id (part of file name)
    ext		      Extension for file name

  RETURN
    Pointer to start of extension
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*/
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#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
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static char *slave_load_file_stem(char *buf, uint file_id,
                                  int event_server_id, const char *ext)
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{
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  char *res;
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  fn_format(buf,"SQL_LOAD-",slave_load_tmpdir, "", MY_UNPACK_FILENAME);
  to_unix_path(buf);

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  buf = strend(buf);
  buf = int10_to_str(::server_id, buf, 10);
  *buf++ = '-';
  buf = int10_to_str(event_server_id, buf, 10);
  *buf++ = '-';
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  res= int10_to_str(file_id, buf, 10);
  strmov(res, ext);                             // Add extension last
  return res;                                   // Pointer to extension
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}
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#endif
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/*
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  Delete all temporary files used for SQL_LOAD.

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  SYNOPSIS
    cleanup_load_tmpdir()
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*/
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#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
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static void cleanup_load_tmpdir()
{
  MY_DIR *dirp;
  FILEINFO *file;
  uint i;
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  char fname[FN_REFLEN], prefbuf[31], *p;
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  if (!(dirp=my_dir(slave_load_tmpdir,MYF(MY_WME))))
    return;

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  /* 
     When we are deleting temporary files, we should only remove
     the files associated with the server id of our server.
     We don't use event_server_id here because since we've disabled
     direct binlogging of Create_file/Append_file/Exec_load events
     we cannot meet Start_log event in the middle of events from one 
     LOAD DATA.
  */
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  p= strmake(prefbuf, STRING_WITH_LEN("SQL_LOAD-"));
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  p= int10_to_str(::server_id, p, 10);
  *(p++)= '-';
  *p= 0;

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  for (i=0 ; i < (uint)dirp->number_off_files; i++)
  {
    file=dirp->dir_entry+i;
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    if (is_prefix(file->name, prefbuf))
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    {
      fn_format(fname,file->name,slave_load_tmpdir,"",MY_UNPACK_FILENAME);
      my_delete(fname, MYF(0));
    }
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  }

  my_dirend(dirp);
}
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#endif
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/*
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  write_str()
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*/
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static bool write_str(IO_CACHE *file, char *str, uint length)
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{
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  uchar tmp[1];
  tmp[0]= (uchar) length;
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  return (my_b_safe_write(file, tmp, sizeof(tmp)) ||
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	  my_b_safe_write(file, (uchar*) str, length));
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}


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/*
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  read_str()
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*/
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static inline int read_str(const char **buf, const char *buf_end,
                           const char **str, uint8 *len)
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{
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  if (*buf + ((uint) (uchar) **buf) >= buf_end)
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    return 1;
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  *len= (uint8) **buf;
  *str= (*buf)+1;
  (*buf)+= (uint) *len+1;
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  return 0;
}

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/*
  Transforms a string into "" or its expression in 0x... form.
*/
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char *str_to_hex(char *to, const char *from, uint len)
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{
  if (len)
  {
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    *to++= '0';
    *to++= 'x';
    to= octet2hex(to, from, len);
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  }
  else
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    to= strmov(to, "\"\"");
  return to;                               // pointer to end 0 of 'to'
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}

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/*
  Append a version of the 'from' string suitable for use in a query to
  the 'to' string.  To generate a correct escaping, the character set
  information in 'csinfo' is used.
 */
#ifndef MYSQL_CLIENT
int
append_query_string(CHARSET_INFO *csinfo,
                    String const *from, String *to)
{
  char *beg, *ptr;
  uint32 const orig_len= to->length();
  if (to->reserve(orig_len + from->length()*2+3))
    return 1;

  beg= to->c_ptr_quick() + to->length();
  ptr= beg;
  if (csinfo->escape_with_backslash_is_dangerous)
    ptr= str_to_hex(ptr, from->ptr(), from->length());
  else
  {
    *ptr++= '\'';
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    ptr+= escape_string_for_mysql(csinfo, ptr, 0,
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                                  from->ptr(), from->length());
    *ptr++='\'';
  }
  to->length(orig_len + ptr - beg);
  return 0;
}
#endif

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/*
  Prints a "session_var=value" string. Used by mysqlbinlog to print some SET
  commands just before it prints a query.
*/

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#ifdef MYSQL_CLIENT
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static void print_set_option(IO_CACHE* file, uint32 bits_changed,
                             uint32 option, uint32 flags, const char* name,
                             bool* need_comma)
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{
  if (bits_changed & option)
  {
    if (*need_comma)
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      my_b_printf(file,", ");
    my_b_printf(file,"%s=%d", name, test(flags & option));
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    *need_comma= 1;
  }
}
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#endif
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/**************************************************************************
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	Log_event methods (= the parent class of all events)
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**************************************************************************/
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/*
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  Log_event::get_type_str()
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*/
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const char* Log_event::get_type_str()
{
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  switch(get_type_code()) {
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  case START_EVENT_V3:  return "Start_v3";
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  case STOP_EVENT:   return "Stop";
  case QUERY_EVENT:  return "Query";
  case ROTATE_EVENT: return "Rotate";
  case INTVAR_EVENT: return "Intvar";
  case LOAD_EVENT:   return "Load";
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  case NEW_LOAD_EVENT:   return "New_load";
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  case SLAVE_EVENT:  return "Slave";
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  case CREATE_FILE_EVENT: return "Create_file";
  case APPEND_BLOCK_EVENT: return "Append_block";
  case DELETE_FILE_EVENT: return "Delete_file";
  case EXEC_LOAD_EVENT: return "Exec_load";
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  case RAND_EVENT: return "RAND";
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  case XID_EVENT: return "Xid";
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  case USER_VAR_EVENT: return "User var";
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  case FORMAT_DESCRIPTION_EVENT: return "Format_desc";
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  case TABLE_MAP_EVENT: return "Table_map";
  case WRITE_ROWS_EVENT: return "Write_rows";
  case UPDATE_ROWS_EVENT: return "Update_rows";
  case DELETE_ROWS_EVENT: return "Delete_rows";
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  case BEGIN_LOAD_QUERY_EVENT: return "Begin_load_query";
  case EXECUTE_LOAD_QUERY_EVENT: return "Execute_load_query";
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  case INCIDENT_EVENT: return "Incident";
520
  default: return "Unknown";				/* impossible */
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  }
}

524

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/*
526
  Log_event::Log_event()
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*/
528

529
#ifndef MYSQL_CLIENT
530
Log_event::Log_event(THD* thd_arg, uint16 flags_arg, bool using_trans)
531
  :log_pos(0), temp_buf(0), exec_time(0), flags(flags_arg), thd(thd_arg)
532
{
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  server_id=	thd->server_id;
  when=		thd->start_time;
535
  cache_stmt=	using_trans;
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}


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/*
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  This minimal constructor is for when you are not even sure that there
  is a valid THD. For example in the server when we are shutting down or
  flushing logs after receiving a SIGHUP (then we must write a Rotate to
  the binlog but we have no THD, so we need this minimal constructor).
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*/

546
Log_event::Log_event()
547
  :temp_buf(0), exec_time(0), flags(0), cache_stmt(0),
548 549
   thd(0)
{
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  server_id=	::server_id;
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  /*
    We can't call my_time() here as this would cause a call before
    my_init() is called
  */
  when=		0;
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  log_pos=	0;
557
}
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#endif /* !MYSQL_CLIENT */
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/*
562
  Log_event::Log_event()
563
*/
564

565
Log_event::Log_event(const char* buf,
566
                     const Format_description_log_event* description_event)
567
  :temp_buf(0), cache_stmt(0)
568
{
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#ifndef MYSQL_CLIENT
  thd = 0;
571
#endif
572 573
  when = uint4korr(buf);
  server_id = uint4korr(buf + SERVER_ID_OFFSET);
574
  if (description_event->binlog_version==1)
575
  {
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    log_pos= 0;
    flags= 0;
    return;
579
  }
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  /* 4.0 or newer */
  log_pos= uint4korr(buf + LOG_POS_OFFSET);
  /*
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    If the log is 4.0 (so here it can only be a 4.0 relay log read by
    the SQL thread or a 4.0 master binlog read by the I/O thread),
    log_pos is the beginning of the event: we transform it into the end
    of the event, which is more useful.
    But how do you know that the log is 4.0: you know it if
    description_event is version 3 *and* you are not reading a
    Format_desc (remember that mysqlbinlog starts by assuming that 5.0
    logs are in 4.0 format, until it finds a Format_desc).
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  */
  if (description_event->binlog_version==3 &&
      buf[EVENT_TYPE_OFFSET]<FORMAT_DESCRIPTION_EVENT && log_pos)
594
  {
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      /*
        If log_pos=0, don't change it. log_pos==0 is a marker to mean
        "don't change rli->group_master_log_pos" (see
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        inc_group_relay_log_pos()). As it is unreal log_pos, adding the
        event len's is nonsense. For example, a fake Rotate event should
600
        not have its log_pos (which is 0) changed or it will modify
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        Exec_master_log_pos in SHOW SLAVE STATUS, displaying a nonsense
        value of (a non-zero offset which does not exist in the master's
        binlog, so which will cause problems if the user uses this value
        in CHANGE MASTER).
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      */
    log_pos+= uint4korr(buf + EVENT_LEN_OFFSET);
607
  }
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  DBUG_PRINT("info", ("log_pos: %lu", (ulong) log_pos));

  flags= uint2korr(buf + FLAGS_OFFSET);
  if ((buf[EVENT_TYPE_OFFSET] == FORMAT_DESCRIPTION_EVENT) ||
      (buf[EVENT_TYPE_OFFSET] == ROTATE_EVENT))
  {
    /*
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      These events always have a header which stops here (i.e. their
      header is FROZEN).
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    */
    /*
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      Initialization to zero of all other Log_event members as they're
      not specified. Currently there are no such members; in the future
      there will be an event UID (but Format_description and Rotate
      don't need this UID, as they are not propagated through
      --log-slave-updates (remember the UID is used to not play a query
      twice when you have two masters which are slaves of a 3rd master).
      Then we are done.
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    */
    return;
  }
  /* otherwise, go on with reading the header from buf (nothing now) */
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}

#ifndef MYSQL_CLIENT
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#ifdef HAVE_REPLICATION
634

635
int Log_event::do_update_pos(Relay_log_info *rli)
636
{
637
  /*
638
    rli is null when (as far as I (Guilhem) know) the caller is
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    Load_log_event::do_apply_event *and* that one is called from
    Execute_load_log_event::do_apply_event.  In this case, we don't
    do anything here ; Execute_load_log_event::do_apply_event will
    call Log_event::do_apply_event again later with the proper rli.
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    Strictly speaking, if we were sure that rli is null only in the
    case discussed above, 'if (rli)' is useless here.  But as we are
    not 100% sure, keep it for now.
646 647

    Matz: I don't think we will need this check with this refactoring.
648
  */
649
  if (rli)
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  {
    /*
      bug#29309 simulation: resetting the flag to force
      wrong behaviour of artificial event to update
      rli->last_master_timestamp for only one time -
      the first FLUSH LOGS in the test.
    */
    DBUG_EXECUTE_IF("let_first_flush_log_change_timestamp",
                    if (debug_not_change_ts_if_art_event == 1
                        && is_artificial_event())
                    {
                      debug_not_change_ts_if_art_event= 0;
                    });
#ifndef DBUG_OFF
    rli->stmt_done(log_pos, 
                   is_artificial_event() &&
                   debug_not_change_ts_if_art_event > 0 ? 0 : when);
#else
    rli->stmt_done(log_pos, is_artificial_event()? 0 : when);
#endif
    DBUG_EXECUTE_IF("let_first_flush_log_change_timestamp",
                    if (debug_not_change_ts_if_art_event == 0)
                    {
                      debug_not_change_ts_if_art_event= 2;
                    });
  }
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  return 0;                                   // Cannot fail currently
}
678

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Log_event::enum_skip_reason
681
Log_event::do_shall_skip(Relay_log_info *rli)
682 683 684 685 686 687 688
{
  DBUG_PRINT("info", ("ev->server_id=%lu, ::server_id=%lu,"
                      " rli->replicate_same_server_id=%d,"
                      " rli->slave_skip_counter=%d",
                      (ulong) server_id, (ulong) ::server_id,
                      rli->replicate_same_server_id,
                      rli->slave_skip_counter));
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  if (server_id == ::server_id && !rli->replicate_same_server_id ||
      rli->slave_skip_counter == 1 && rli->is_in_group())
691
    return EVENT_SKIP_IGNORE;
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  else if (rli->slave_skip_counter > 0)
    return EVENT_SKIP_COUNT;
  else
695
    return EVENT_SKIP_NOT;
696
}
697

698

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/*
700
  Log_event::pack_info()
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*/
702

703
void Log_event::pack_info(Protocol *protocol)
704
{
705
  protocol->store("", &my_charset_bin);
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}


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/*
710
  Log_event::net_send()
711

712
  Only called by SHOW BINLOG EVENTS
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*/
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int Log_event::net_send(Protocol *protocol, const char* log_name, my_off_t pos)
716
{
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  const char *p= strrchr(log_name, FN_LIBCHAR);
  const char *event_type;
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  if (p)
    log_name = p + 1;
721

722
  protocol->prepare_for_resend();
723
  protocol->store(log_name, &my_charset_bin);
724
  protocol->store((ulonglong) pos);
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  event_type = get_type_str();
726
  protocol->store(event_type, strlen(event_type), &my_charset_bin);
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  protocol->store((uint32) server_id);
  protocol->store((ulonglong) log_pos);
  pack_info(protocol);
  return protocol->write();
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}
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#endif /* HAVE_REPLICATION */


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/*
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  Log_event::init_show_field_list()
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*/
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void Log_event::init_show_field_list(List<Item>* field_list)
{
  field_list->push_back(new Item_empty_string("Log_name", 20));
742
  field_list->push_back(new Item_return_int("Pos", MY_INT32_NUM_DECIMAL_DIGITS,
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					    MYSQL_TYPE_LONGLONG));
  field_list->push_back(new Item_empty_string("Event_type", 20));
  field_list->push_back(new Item_return_int("Server_id", 10,
					    MYSQL_TYPE_LONG));
747 748
  field_list->push_back(new Item_return_int("End_log_pos",
                                            MY_INT32_NUM_DECIMAL_DIGITS,
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					    MYSQL_TYPE_LONGLONG));
  field_list->push_back(new Item_empty_string("Info", 20));
}

753

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/*
755
  Log_event::write()
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*/
757

758
bool Log_event::write_header(IO_CACHE* file, ulong event_data_length)
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{
760
  uchar header[LOG_EVENT_HEADER_LEN];
761
  ulong now;
762
  DBUG_ENTER("Log_event::write_header");
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764 765
  /* Store number of bytes that will be written by this event */
  data_written= event_data_length + sizeof(header);
766

767 768 769 770
  /*
    log_pos != 0 if this is relay-log event. In this case we should not
    change the position
  */
771

772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811
  if (is_artificial_event())
  {
    /*
      We should not do any cleanup on slave when reading this. We
      mark this by setting log_pos to 0.  Start_log_event_v3() will
      detect this on reading and set artificial_event=1 for the event.
    */
    log_pos= 0;
  }
  else  if (!log_pos)
  {
    /*
      Calculate position of end of event

      Note that with a SEQ_READ_APPEND cache, my_b_tell() does not
      work well.  So this will give slightly wrong positions for the
      Format_desc/Rotate/Stop events which the slave writes to its
      relay log. For example, the initial Format_desc will have
      end_log_pos=91 instead of 95. Because after writing the first 4
      bytes of the relay log, my_b_tell() still reports 0. Because
      my_b_append() does not update the counter which my_b_tell()
      later uses (one should probably use my_b_append_tell() to work
      around this).  To get right positions even when writing to the
      relay log, we use the (new) my_b_safe_tell().

      Note that this raises a question on the correctness of all these
      DBUG_ASSERT(my_b_tell()=rli->event_relay_log_pos).

      If in a transaction, the log_pos which we calculate below is not
      very good (because then my_b_safe_tell() returns start position
      of the BEGIN, so it's like the statement was at the BEGIN's
      place), but it's not a very serious problem (as the slave, when
      it is in a transaction, does not take those end_log_pos into
      account (as it calls inc_event_relay_log_pos()). To be fixed
      later, so that it looks less strange. But not bug.
    */

    log_pos= my_b_safe_tell(file)+data_written;
  }

812
  now= (ulong) get_time();                              // Query start time
813

814 815 816 817 818 819 820
  /*
    Header will be of size LOG_EVENT_HEADER_LEN for all events, except for
    FORMAT_DESCRIPTION_EVENT and ROTATE_EVENT, where it will be
    LOG_EVENT_MINIMAL_HEADER_LEN (remember these 2 have a frozen header,
    because we read them before knowing the format).
  */

821
  int4store(header, now);              // timestamp
822 823 824 825 826 827 828
  header[EVENT_TYPE_OFFSET]= get_type_code();
  int4store(header+ SERVER_ID_OFFSET, server_id);
  int4store(header+ EVENT_LEN_OFFSET, data_written);
  int4store(header+ LOG_POS_OFFSET, log_pos);
  int2store(header+ FLAGS_OFFSET, flags);

  DBUG_RETURN(my_b_safe_write(file, header, sizeof(header)) != 0);
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}


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/*
833
  Log_event::read_log_event()
834 835 836 837

  This needn't be format-tolerant, because we only read
  LOG_EVENT_MINIMAL_HEADER_LEN (we just want to read the event's length).

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*/
839

840
int Log_event::read_log_event(IO_CACHE* file, String* packet,
841
			      pthread_mutex_t* log_lock)
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{
  ulong data_len;
844
  int result=0;
845
  char buf[LOG_EVENT_MINIMAL_HEADER_LEN];
846
  DBUG_ENTER("Log_event::read_log_event");
847

848
  if (log_lock)
849
    pthread_mutex_lock(log_lock);
850
  if (my_b_read(file, (uchar*) buf, sizeof(buf)))
851
  {
852 853 854 855 856
    /*
      If the read hits eof, we must report it as eof so the caller
      will know it can go into cond_wait to be woken up on the next
      update to the log.
    */
857
    DBUG_PRINT("error",("file->error: %d", file->error));
858 859 860
    if (!file->error)
      result= LOG_READ_EOF;
    else
861
      result= (file->error > 0 ? LOG_READ_TRUNC : LOG_READ_IO);
862
    goto end;
863
  }
864
  data_len= uint4korr(buf + EVENT_LEN_OFFSET);
865
  if (data_len < LOG_EVENT_MINIMAL_HEADER_LEN ||
866
      data_len > current_thd->variables.max_allowed_packet)
867
  {
868
    DBUG_PRINT("error",("data_len: %ld", data_len));
869
    result= ((data_len < LOG_EVENT_MINIMAL_HEADER_LEN) ? LOG_READ_BOGUS :
870 871
	     LOG_READ_TOO_LARGE);
    goto end;
872
  }
873 874 875 876 877 878 879 880

  /* Append the log event header to packet */
  if (packet->append(buf, sizeof(buf)))
  {
    /* Failed to allocate packet */
    result= LOG_READ_MEM;
    goto end;
  }
881
  data_len-= LOG_EVENT_MINIMAL_HEADER_LEN;
882 883
  if (data_len)
  {
884
    /* Append rest of event, read directly from file into packet */
885
    if (packet->append(file, data_len))
886
    {
887
      /*
888 889 890 891 892 893 894 895 896 897
        Fatal error occured when appending rest of the event
        to packet, possible failures:
	1. EOF occured when reading from file, it's really an error
           as data_len is >=0 there's supposed to be more bytes available.
           file->error will have been set to number of bytes left to read
        2. Read was interrupted, file->error would normally be set to -1
        3. Failed to allocate memory for packet, my_errno
           will be ENOMEM(file->error shuold be 0, but since the
           memory allocation occurs before the call to read it might
           be uninitialized)
898
      */
899 900
      result= (my_errno == ENOMEM ? LOG_READ_MEM :
               (file->error >= 0 ? LOG_READ_TRUNC: LOG_READ_IO));
901
      /* Implicit goto end; */
902
    }
903
  }
904 905 906 907

end:
  if (log_lock)
    pthread_mutex_unlock(log_lock);
908
  DBUG_RETURN(result);
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}
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#endif /* !MYSQL_CLIENT */
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912
#ifndef MYSQL_CLIENT
913 914
#define UNLOCK_MUTEX if (log_lock) pthread_mutex_unlock(log_lock);
#define LOCK_MUTEX if (log_lock) pthread_mutex_lock(log_lock);
915
#else
916
#define UNLOCK_MUTEX
917 918 919
#define LOCK_MUTEX
#endif

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920
/*
921 922
  Log_event::read_log_event()

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923
  NOTE:
924
    Allocates memory;  The caller is responsible for clean-up.
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*/
926

927
#ifndef MYSQL_CLIENT
928 929
Log_event* Log_event::read_log_event(IO_CACHE* file,
				     pthread_mutex_t* log_lock,
930 931
                                     const Format_description_log_event
                                     *description_event)
932
#else
933
Log_event* Log_event::read_log_event(IO_CACHE* file,
934 935
                                     const Format_description_log_event
                                     *description_event)
936
#endif
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937
{
938
  DBUG_ENTER("Log_event::read_log_event");
939
  DBUG_ASSERT(description_event != 0);
940 941 942 943 944
  char head[LOG_EVENT_MINIMAL_HEADER_LEN];
  /*
    First we only want to read at most LOG_EVENT_MINIMAL_HEADER_LEN, just to
    check the event for sanity and to know its length; no need to really parse
    it. We say "at most" because this could be a 3.23 master, which has header
945 946
    of 13 bytes, whereas LOG_EVENT_MINIMAL_HEADER_LEN is 19 bytes (it's
    "minimal" over the set {MySQL >=4.0}).
947 948 949
  */
  uint header_size= min(description_event->common_header_len,
                        LOG_EVENT_MINIMAL_HEADER_LEN);
950

951
  LOCK_MUTEX;
952
  DBUG_PRINT("info", ("my_b_tell: %lu", (ulong) my_b_tell(file)));
953
  if (my_b_read(file, (uchar *) head, header_size))
954
  {
955 956
    DBUG_PRINT("info", ("Log_event::read_log_event(IO_CACHE*,Format_desc*) \
failed my_b_read"));
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    UNLOCK_MUTEX;
958
    /*
959 960 961
      No error here; it could be that we are at the file's end. However
      if the next my_b_read() fails (below), it will be an error as we
      were able to read the first bytes.
962
    */
963
    DBUG_RETURN(0);
964
  }
965
  uint data_len = uint4korr(head + EVENT_LEN_OFFSET);
966 967 968
  char *buf= 0;
  const char *error= 0;
  Log_event *res=  0;
969 970
#ifndef max_allowed_packet
  THD *thd=current_thd;
971
  uint max_allowed_packet= thd ? thd->variables.max_allowed_packet : ~(ulong)0;
972
#endif
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974
  if (data_len > max_allowed_packet)
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975
  {
976 977
    error = "Event too big";
    goto err;
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  }

980
  if (data_len < header_size)
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  {
982 983
    error = "Event too small";
    goto err;
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  }
985 986

  // some events use the extra byte to null-terminate strings
987
  if (!(buf = (char*) my_malloc(data_len+1, MYF(MY_WME))))
988 989 990
  {
    error = "Out of memory";
    goto err;
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991
  }
992
  buf[data_len] = 0;
993
  memcpy(buf, head, header_size);
994
  if (my_b_read(file, (uchar*) buf + header_size, data_len - header_size))
995 996 997 998
  {
    error = "read error";
    goto err;
  }
999
  if ((res= read_log_event(buf, data_len, &error, description_event)))
1000
    res->register_temp_buf(buf);
1001

1002
err:
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1003
  UNLOCK_MUTEX;
1004
  if (!res)
1005
  {
1006
    DBUG_ASSERT(error != 0);
1007 1008
    sql_print_error("Error in Log_event::read_log_event(): "
                    "'%s', data_len: %d, event_type: %d",
1009
		    error,data_len,head[EVENT_TYPE_OFFSET]);
1010
    my_free(buf, MYF(MY_ALLOW_ZERO_PTR));
1011 1012 1013 1014 1015 1016 1017 1018 1019
    /*
      The SQL slave thread will check if file->error<0 to know
      if there was an I/O error. Even if there is no "low-level" I/O errors
      with 'file', any of the high-level above errors is worrying
      enough to stop the SQL thread now ; as we are skipping the current event,
      going on with reading and successfully executing other events can
      only corrupt the slave's databases. So stop.
    */
    file->error= -1;
1020
  }
1021
  DBUG_RETURN(res);
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}

1024

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/*
1026
  Log_event::read_log_event()
1027 1028
  Binlog format tolerance is in (buf, event_len, description_event)
  constructors.
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*/
1030

1031 1032 1033
Log_event* Log_event::read_log_event(const char* buf, uint event_len,
				     const char **error,
                                     const Format_description_log_event *description_event)
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{
1035 1036
  Log_event* ev;
  DBUG_ENTER("Log_event::read_log_event(char*,...)");
1037
  DBUG_ASSERT(description_event != 0);
1038
  DBUG_PRINT("info", ("binlog_version: %d", description_event->binlog_version));
1039
  /* Check the integrity */
1040
  if (event_len < EVENT_LEN_OFFSET ||
1041
      buf[EVENT_TYPE_OFFSET] >= ENUM_END_EVENT ||
1042 1043 1044
      (uint) event_len != uint4korr(buf+EVENT_LEN_OFFSET))
  {
    *error="Sanity check failed";		// Needed to free buffer
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    DBUG_RETURN(NULL); // general sanity check - will fail on a partial read
1046
  }
1047

1048
  switch(buf[EVENT_TYPE_OFFSET]) {
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  case QUERY_EVENT:
1050
    ev  = new Query_log_event(buf, event_len, description_event, QUERY_EVENT);
1051
    break;
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  case LOAD_EVENT:
1053
    ev = new Load_log_event(buf, event_len, description_event);
1054
    break;
1055
  case NEW_LOAD_EVENT:
1056
    ev = new Load_log_event(buf, event_len, description_event);
1057
    break;
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  case ROTATE_EVENT:
1059
    ev = new Rotate_log_event(buf, event_len, description_event);
1060
    break;
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#ifdef HAVE_REPLICATION
1062
  case SLAVE_EVENT: /* can never happen (unused event) */
1063 1064
    ev = new Slave_log_event(buf, event_len);
    break;
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#endif /* HAVE_REPLICATION */
1066
  case CREATE_FILE_EVENT:
1067
    ev = new Create_file_log_event(buf, event_len, description_event);
1068 1069
    break;
  case APPEND_BLOCK_EVENT:
1070
    ev = new Append_block_log_event(buf, event_len, description_event);
1071 1072
    break;
  case DELETE_FILE_EVENT:
1073
    ev = new Delete_file_log_event(buf, event_len, description_event);
1074 1075
    break;
  case EXEC_LOAD_EVENT:
1076
    ev = new Execute_load_log_event(buf, event_len, description_event);
1077
    break;
1078 1079
  case START_EVENT_V3: /* this is sent only by MySQL <=4.x */
    ev = new Start_log_event_v3(buf, description_event);
1080 1081
    break;
  case STOP_EVENT:
1082
    ev = new Stop_log_event(buf, description_event);
1083 1084
    break;
  case INTVAR_EVENT:
1085
    ev = new Intvar_log_event(buf, description_event);
1086
    break;
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  case XID_EVENT:
    ev = new Xid_log_event(buf, description_event);
    break;
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  case RAND_EVENT:
1091
    ev = new Rand_log_event(buf, description_event);
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    break;
1093
  case USER_VAR_EVENT:
1094 1095 1096 1097
    ev = new User_var_log_event(buf, description_event);
    break;
  case FORMAT_DESCRIPTION_EVENT:
    ev = new Format_description_log_event(buf, event_len, description_event); 
1098
    break;
1099
#if defined(HAVE_REPLICATION) 
1100 1101 1102 1103 1104 1105 1106 1107 1108
  case PRE_GA_WRITE_ROWS_EVENT:
    ev = new Write_rows_log_event_old(buf, event_len, description_event);
    break;
  case PRE_GA_UPDATE_ROWS_EVENT:
    ev = new Update_rows_log_event_old(buf, event_len, description_event);
    break;
  case PRE_GA_DELETE_ROWS_EVENT:
    ev = new Delete_rows_log_event_old(buf, event_len, description_event);
    break;
1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121
  case WRITE_ROWS_EVENT:
    ev = new Write_rows_log_event(buf, event_len, description_event);
    break;
  case UPDATE_ROWS_EVENT:
    ev = new Update_rows_log_event(buf, event_len, description_event);
    break;
  case DELETE_ROWS_EVENT:
    ev = new Delete_rows_log_event(buf, event_len, description_event);
    break;
  case TABLE_MAP_EVENT:
    ev = new Table_map_log_event(buf, event_len, description_event);
    break;
#endif
1122 1123 1124 1125
  case BEGIN_LOAD_QUERY_EVENT:
    ev = new Begin_load_query_log_event(buf, event_len, description_event);
    break;
  case EXECUTE_LOAD_QUERY_EVENT:
1126 1127 1128 1129
    ev= new Execute_load_query_log_event(buf, event_len, description_event);
    break;
  case INCIDENT_EVENT:
    ev = new Incident_log_event(buf, event_len, description_event);
1130
    break;
1131
  default:
1132 1133
    DBUG_PRINT("error",("Unknown event code: %d",
                        (int) buf[EVENT_TYPE_OFFSET]));
1134
    ev= NULL;
1135
    break;
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  }
1137

1138 1139 1140 1141
  DBUG_PRINT("read_event", ("%s(type_code: %d; event_len: %d)",
                            ev ? ev->get_type_str() : "<unknown>",
                            buf[EVENT_TYPE_OFFSET],
                            event_len));
1142
  /*
1143 1144 1145 1146 1147 1148 1149
    is_valid() are small event-specific sanity tests which are
    important; for example there are some my_malloc() in constructors
    (e.g. Query_log_event::Query_log_event(char*...)); when these
    my_malloc() fail we can't return an error out of the constructor
    (because constructor is "void") ; so instead we leave the pointer we
    wanted to allocate (e.g. 'query') to 0 and we test it in is_valid().
    Same for Format_description_log_event, member 'post_header_len'.
1150
  */
1151
  if (!ev || !ev->is_valid())
1152
  {
1153 1154
    DBUG_PRINT("error",("Found invalid event in binary log"));

1155
    delete ev;
1156
#ifdef MYSQL_CLIENT
1157
    if (!force_opt) /* then mysqlbinlog dies */
1158 1159
    {
      *error= "Found invalid event in binary log";
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      DBUG_RETURN(0);
1161
    }
1162
    ev= new Unknown_log_event(buf, description_event);
1163 1164
#else
    *error= "Found invalid event in binary log";
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    DBUG_RETURN(0);
1166
#endif
1167
  }
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  DBUG_RETURN(ev);  
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}

1171
#ifdef MYSQL_CLIENT
1172

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/*
1174
  Log_event::print_header()
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*/
1176

1177 1178 1179
void Log_event::print_header(IO_CACHE* file,
                             PRINT_EVENT_INFO* print_event_info,
                             bool is_more __attribute__((unused)))
1180
{
1181
  char llbuff[22];
1182
  my_off_t hexdump_from= print_event_info->hexdump_from;
1183
  DBUG_ENTER("Log_event::print_header");
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1184

1185
  my_b_printf(file, "#");
1186
  print_timestamp(file);
1187 1188
  my_b_printf(file, " server id %d  end_log_pos %s ", server_id,
              llstr(log_pos,llbuff));
1189

1190
  /* mysqlbinlog --hexdump */
1191
  if (print_event_info->hexdump_from)
1192
  {
1193
    my_b_printf(file, "\n");
1194 1195 1196
    uchar *ptr= (uchar*)temp_buf;
    my_off_t size=
      uint4korr(ptr + EVENT_LEN_OFFSET) - LOG_EVENT_MINIMAL_HEADER_LEN;
1197 1198
    my_off_t i;

1199 1200 1201 1202
    /* Header len * 4 >= header len * (2 chars + space + extra space) */
    char *h, hex_string[LOG_EVENT_MINIMAL_HEADER_LEN*4]= {0};
    char *c, char_string[16+1]= {0};

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    /* Pretty-print event common header if header is exactly 19 bytes */
1204
    if (print_event_info->common_header_len == LOG_EVENT_MINIMAL_HEADER_LEN)
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    {
1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218
      char emit_buf[256];               // Enough for storing one line
      my_b_printf(file, "# Position  Timestamp   Type   Master ID        "
                  "Size      Master Pos    Flags \n");
      int const bytes_written=
        my_snprintf(emit_buf, sizeof(emit_buf),
                    "# %8.8lx %02x %02x %02x %02x   %02x   "
                    "%02x %02x %02x %02x   %02x %02x %02x %02x   "
                    "%02x %02x %02x %02x   %02x %02x\n",
                    (unsigned long) hexdump_from,
                    ptr[0], ptr[1], ptr[2], ptr[3], ptr[4], ptr[5], ptr[6],
                    ptr[7], ptr[8], ptr[9], ptr[10], ptr[11], ptr[12], ptr[13],
                    ptr[14], ptr[15], ptr[16], ptr[17], ptr[18]);
      DBUG_ASSERT(bytes_written >= 0);
1219 1220
      DBUG_ASSERT(static_cast<size_t>(bytes_written) < sizeof(emit_buf));
      my_b_write(file, (uchar*) emit_buf, bytes_written);
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      ptr += LOG_EVENT_MINIMAL_HEADER_LEN;
      hexdump_from += LOG_EVENT_MINIMAL_HEADER_LEN;
    }
1224 1225 1226 1227 1228

    /* Rest of event (without common header) */
    for (i= 0, c= char_string, h=hex_string;
	 i < size;
	 i++, ptr++)
1229
    {
1230 1231
      my_snprintf(h, 4, "%02x ", *ptr);
      h += 3;
1232

1233
      *c++= my_isalnum(&my_charset_bin, *ptr) ? *ptr : '.';
1234 1235 1236

      if (i % 16 == 15)
      {
1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
        /*
          my_b_printf() does not support full printf() formats, so we
          have to do it this way.

          TODO: Rewrite my_b_printf() to support full printf() syntax.
         */
        char emit_buf[256];
        int const bytes_written=
          my_snprintf(emit_buf, sizeof(emit_buf),
                      "# %8.8lx %-48.48s |%16s|\n",
                      (unsigned long) (hexdump_from + (i & 0xfffffff0)),
                      hex_string, char_string);
        DBUG_ASSERT(bytes_written >= 0);
1250 1251
        DBUG_ASSERT(static_cast<size_t>(bytes_written) < sizeof(emit_buf));
	my_b_write(file, (uchar*) emit_buf, bytes_written);
1252 1253 1254 1255
	hex_string[0]= 0;
	char_string[0]= 0;
	c= char_string;
	h= hex_string;
1256
      }
1257
      else if (i % 8 == 7) *h++ = ' ';
1258
    }
1259
    *c= '\0';
1260

1261
    if (hex_string[0])
1262 1263 1264 1265
    {
      char emit_buf[256];
      int const bytes_written=
        my_snprintf(emit_buf, sizeof(emit_buf),
1266
                    "# %8.8lx %-48.48s |%s|\n",
1267 1268 1269
                    (unsigned long) (hexdump_from + (i & 0xfffffff0)),
                    hex_string, char_string);
      DBUG_ASSERT(bytes_written >= 0);
1270 1271
      DBUG_ASSERT(static_cast<size_t>(bytes_written) < sizeof(emit_buf));
      my_b_write(file, (uchar*) emit_buf, bytes_written);
1272
    }
1273 1274 1275 1276
    /*
      need a # to prefix the rest of printouts for example those of
      Rows_log_event::print_helper().
    */
1277
    my_b_write(file, reinterpret_cast<const uchar*>("# "), 2);
1278
  }
1279
  DBUG_VOID_RETURN;
1280 1281
}

1282

1283 1284 1285
void Log_event::print_base64(IO_CACHE* file,
                             PRINT_EVENT_INFO* print_event_info,
                             bool more)
1286
{
1287
  const uchar *ptr= (const uchar *)temp_buf;
1288
  uint32 size= uint4korr(ptr + EVENT_LEN_OFFSET);
1289 1290
  DBUG_ENTER("Log_event::print_base64");

1291
  size_t const tmp_str_sz= base64_needed_encoded_length((int) size);
1292
  char *const tmp_str= (char *) my_malloc(tmp_str_sz, MYF(MY_WME));
1293 1294 1295
  if (!tmp_str) {
    fprintf(stderr, "\nError: Out of memory. "
            "Could not print correct binlog event.\n");
1296
    DBUG_VOID_RETURN;
1297
  }
1298

1299 1300 1301 1302
  if (base64_encode(ptr, (size_t) size, tmp_str))
  {
    DBUG_ASSERT(0);
  }
1303 1304 1305 1306 1307 1308 1309

  if (my_b_tell(file) == 0)
    my_b_printf(file, "\nBINLOG '\n");

  my_b_printf(file, "%s\n", tmp_str);

  if (!more)
1310
    my_b_printf(file, "'%s\n", print_event_info->delimiter);
1311

1312
  my_free(tmp_str, MYF(0));
1313
  DBUG_VOID_RETURN;
1314 1315 1316
}


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1317
/*
1318
  Log_event::print_timestamp()
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*/
1320

1321
void Log_event::print_timestamp(IO_CACHE* file, time_t* ts)
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{
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1323
  struct tm *res;
1324
  DBUG_ENTER("Log_event::print_timestamp");
1325 1326
  if (!ts)
    ts = &when;
1327 1328
#ifdef MYSQL_SERVER				// This is always false
  struct tm tm_tmp;
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1329
  localtime_r(ts,(res= &tm_tmp));
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#else
1331
  res=localtime(ts);
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#endif
1333

1334 1335 1336 1337 1338 1339 1340 1341
  my_b_printf(file,"%02d%02d%02d %2d:%02d:%02d",
              res->tm_year % 100,
              res->tm_mon+1,
              res->tm_mday,
              res->tm_hour,
              res->tm_min,
              res->tm_sec);
  DBUG_VOID_RETURN;
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}

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#endif /* MYSQL_CLIENT */
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1347 1348 1349 1350 1351 1352 1353 1354 1355 1356
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
inline Log_event::enum_skip_reason
Log_event::continue_group(Relay_log_info *rli)
{
  if (rli->slave_skip_counter == 1)
    return Log_event::EVENT_SKIP_IGNORE;
  return Log_event::do_shall_skip(rli);
}
#endif

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/**************************************************************************
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1358
	Query_log_event methods
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**************************************************************************/
1360

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#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
1362

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/*
1364
  Query_log_event::pack_info()
1365 1366 1367 1368
  This (which is used only for SHOW BINLOG EVENTS) could be updated to
  print SET @@session_var=. But this is not urgent, as SHOW BINLOG EVENTS is
  only an information, it does not produce suitable queries to replay (for
  example it does not print LOAD DATA INFILE).
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*/
1370

1371
void Query_log_event::pack_info(Protocol *protocol)
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{
1373
  // TODO: show the catalog ??
1374
  char *buf, *pos;
1375
  if (!(buf= (char*) my_malloc(9 + db_len + q_len, MYF(MY_WME))))
1376
    return;
1377 1378
  pos= buf;
  if (!(flags & LOG_EVENT_SUPPRESS_USE_F)
1379
      && db && db_len)
1380
  {
1381 1382
    pos= strmov(buf, "use `");
    memcpy(pos, db, db_len);
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    pos= strmov(pos+db_len, "`; ");
1384
  }
1385
  if (query && q_len)
1386 1387 1388 1389
  {
    memcpy(pos, query, q_len);
    pos+= q_len;
  }
1390
  protocol->store(buf, pos-buf, &my_charset_bin);
1391
  my_free(buf, MYF(MY_ALLOW_ZERO_PTR));
1392
}
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#endif
1394

1395
#ifndef MYSQL_CLIENT
1396

1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408
/* Utility function for the next method */
static void write_str_with_code_and_len(char **dst, const char *src,
                                        int len, uint code)
{
  DBUG_ASSERT(src);
  *((*dst)++)= code;
  *((*dst)++)= (uchar) len;
  bmove(*dst, src, len);
  (*dst)+= len;
}


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/*
1410
  Query_log_event::write()
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1412 1413 1414 1415
  NOTES:
    In this event we have to modify the header to have the correct
    EVENT_LEN_OFFSET as we don't yet know how many status variables we
    will print!
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*/
1417

1418
bool Query_log_event::write(IO_CACHE* file)
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{
1420 1421 1422 1423 1424
  /**
    @todo if catalog can be of length FN_REFLEN==512, then we are not
    replicating it correctly, since the length is stored in a byte
    /sven
  */
1425 1426 1427 1428 1429
  uchar buf[QUERY_HEADER_LEN+
            1+4+           // code of flags2 and flags2
            1+8+           // code of sql_mode and sql_mode
            1+1+FN_REFLEN+ // code of catalog and catalog length and catalog
            1+4+           // code of autoinc and the 2 autoinc variables
1430
            1+6+           // code of charset and charset
1431
            1+1+MAX_TIME_ZONE_NAME_LENGTH+ // code of tz and tz length and tz name
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            1+2+           // code of lc_time_names and lc_time_names_number
            1+2            // code of charset_database and charset_database_number
1434
            ], *start, *start_of_status;
1435
  ulong event_length;
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1437
  if (!query)
1438 1439
    return 1;                                   // Something wrong with event

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  /*
    We want to store the thread id:
    (- as an information for the user when he reads the binlog)
    - if the query uses temporary table: for the slave SQL thread to know to
    which master connection the temp table belongs.
1445
    Now imagine we (write()) are called by the slave SQL thread (we are
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    logging a query executed by this thread; the slave runs with
    --log-slave-updates). Then this query will be logged with
    thread_id=the_thread_id_of_the_SQL_thread. Imagine that 2 temp tables of
    the same name were created simultaneously on the master (in the master
    binlog you have
    CREATE TEMPORARY TABLE t; (thread 1)
    CREATE TEMPORARY TABLE t; (thread 2)
    ...)
    then in the slave's binlog there will be
    CREATE TEMPORARY TABLE t; (thread_id_of_the_slave_SQL_thread)
    CREATE TEMPORARY TABLE t; (thread_id_of_the_slave_SQL_thread)
    which is bad (same thread id!).

    To avoid this, we log the thread's thread id EXCEPT for the SQL
    slave thread for which we log the original (master's) thread id.
    Now this moves the bug: what happens if the thread id on the
    master was 10 and when the slave replicates the query, a
    connection number 10 is opened by a normal client on the slave,
    and updates a temp table of the same name? We get a problem
    again. To avoid this, in the handling of temp tables (sql_base.cc)
    we use thread_id AND server_id.  TODO when this is merged into
    4.1: in 4.1, slave_proxy_id has been renamed to pseudo_thread_id
    and is a session variable: that's to make mysqlbinlog work with
    temp tables. We probably need to introduce

    SET PSEUDO_SERVER_ID
    for mysqlbinlog in 4.1. mysqlbinlog would print:
    SET PSEUDO_SERVER_ID=
    SET PSEUDO_THREAD_ID=
    for each query using temp tables.
  */
  int4store(buf + Q_THREAD_ID_OFFSET, slave_proxy_id);
1478 1479 1480 1481
  int4store(buf + Q_EXEC_TIME_OFFSET, exec_time);
  buf[Q_DB_LEN_OFFSET] = (char) db_len;
  int2store(buf + Q_ERR_CODE_OFFSET, error_code);

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  /*
    You MUST always write status vars in increasing order of code. This
    guarantees that a slightly older slave will be able to parse those he
    knows.
  */
  start_of_status= start= buf+QUERY_HEADER_LEN;
  if (flags2_inited)
  {
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    *start++= Q_FLAGS2_CODE;
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    int4store(start, flags2);
    start+= 4;
  }
  if (sql_mode_inited)
  {
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    *start++= Q_SQL_MODE_CODE;
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    int8store(start, (ulonglong)sql_mode);
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    start+= 8;
  }
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  if (catalog_len) // i.e. this var is inited (false for 4.0 events)
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  {
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    write_str_with_code_and_len((char **)(&start),
                                catalog, catalog_len, Q_CATALOG_NZ_CODE);
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    /*
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      In 5.0.x where x<4 masters we used to store the end zero here. This was
      a waste of one byte so we don't do it in x>=4 masters. We change code to
      Q_CATALOG_NZ_CODE, because re-using the old code would make x<4 slaves
      of this x>=4 master segfault (expecting a zero when there is
      none). Remaining compatibility problems are: the older slave will not
      find the catalog; but it is will not crash, and it's not an issue
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      that it does not find the catalog as catalogs were not used in these
      older MySQL versions (we store it in binlog and read it from relay log
      but do nothing useful with it). What is an issue is that the older slave
      will stop processing the Q_* blocks (and jumps to the db/query) as soon
      as it sees unknown Q_CATALOG_NZ_CODE; so it will not be able to read
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      Q_AUTO_INCREMENT*, Q_CHARSET and so replication will fail silently in
      various ways. Documented that you should not mix alpha/beta versions if
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      they are not exactly the same version, with example of 5.0.3->5.0.2 and
      5.0.4->5.0.3. If replication is from older to new, the new will
      recognize Q_CATALOG_CODE and have no problem.
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    */
  }
  if (auto_increment_increment != 1)
  {
    *start++= Q_AUTO_INCREMENT;
    int2store(start, auto_increment_increment);
    int2store(start+2, auto_increment_offset);
    start+= 4;
  }
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  if (charset_inited)
  {
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    *start++= Q_CHARSET_CODE;
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    memcpy(start, charset, 6);
    start+= 6;
  }
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  if (time_zone_len)
  {
    /* In the TZ sys table, column Name is of length 64 so this should be ok */
    DBUG_ASSERT(time_zone_len <= MAX_TIME_ZONE_NAME_LENGTH);
    *start++= Q_TIME_ZONE_CODE;
    *start++= time_zone_len;
    memcpy(start, time_zone_str, time_zone_len);
    start+= time_zone_len;
  }
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  if (lc_time_names_number)
  {
    DBUG_ASSERT(lc_time_names_number <= 0xFFFF);
    *start++= Q_LC_TIME_NAMES_CODE;
    int2store(start, lc_time_names_number);
    start+= 2;
  }
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  if (charset_database_number)
  {
    DBUG_ASSERT(charset_database_number <= 0xFFFF);
    *start++= Q_CHARSET_DATABASE_CODE;
    int2store(start, charset_database_number);
    start+= 2;
  }
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  /*
    Here there could be code like
1561
    if (command-line-option-which-says-"log_this_variable" && inited)
1562
    {
1563
    *start++= Q_THIS_VARIABLE_CODE;
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    int4store(start, this_variable);
    start+= 4;
    }
  */
  
  /* Store length of status variables */
  status_vars_len= (uint) (start-start_of_status);
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  DBUG_ASSERT(status_vars_len <= MAX_SIZE_LOG_EVENT_STATUS);
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  int2store(buf + Q_STATUS_VARS_LEN_OFFSET, status_vars_len);

  /*
    Calculate length of whole event
    The "1" below is the \0 in the db's length
  */
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  event_length= (uint) (start-buf) + get_post_header_size_for_derived() + db_len + 1 + q_len;
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  return (write_header(file, event_length) ||
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          my_b_safe_write(file, (uchar*) buf, QUERY_HEADER_LEN) ||
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          write_post_header_for_derived(file) ||
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          my_b_safe_write(file, (uchar*) start_of_status,
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                          (uint) (start-start_of_status)) ||
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          my_b_safe_write(file, (db) ? (uchar*) db : (uchar*)"", db_len + 1) ||
          my_b_safe_write(file, (uchar*) query, q_len)) ? 1 : 0;
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}

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/*
  Query_log_event::Query_log_event()
 
  The simplest constructor that could possibly work.  This is used for
  creating static objects that have a special meaning and are invisible
  to the log.  
*/
Query_log_event::Query_log_event()
  :Log_event(), data_buf(0)
{
}

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/*
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  SYNOPSIS
    Query_log_event::Query_log_event()
1605
      thd_arg           - thread handle
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      query_arg         - array of char representing the query
      query_length      - size of the  `query_arg' array
      using_trans       - there is a modified transactional table
      suppress_use      - suppress the generation of 'USE' statements
      killed_status_arg - an optional with default to THD::KILLED_NO_VALUE
                          if the value is different from the default, the arg
                          is set to the current thd->killed value.
                          A caller might need to masquerade thd->killed with
                          THD::NOT_KILLED.
  DESCRIPTION
  Creates an event for binlogging
  The value for local `killed_status' can be supplied by caller.
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*/
1619
Query_log_event::Query_log_event(THD* thd_arg, const char* query_arg,
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				 ulong query_length, bool using_trans,
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				 bool suppress_use,
                                 THD::killed_state killed_status_arg)
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  :Log_event(thd_arg,
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             (thd_arg->thread_specific_used ? LOG_EVENT_THREAD_SPECIFIC_F :
              0) |
             (suppress_use ? LOG_EVENT_SUPPRESS_USE_F : 0),
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	     using_trans),
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   data_buf(0), query(query_arg), catalog(thd_arg->catalog),
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   db(thd_arg->db), q_len((uint32) query_length),
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   thread_id(thd_arg->thread_id),
   /* save the original thread id; we already know the server id */
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   slave_proxy_id(thd_arg->variables.pseudo_thread_id),
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   flags2_inited(1), sql_mode_inited(1), charset_inited(1),
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   sql_mode(thd_arg->variables.sql_mode),
   auto_increment_increment(thd_arg->variables.auto_increment_increment),
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   auto_increment_offset(thd_arg->variables.auto_increment_offset),
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   lc_time_names_number(thd_arg->variables.lc_time_names->number),
   charset_database_number(0)
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{
  time_t end_time;
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  if (killed_status_arg == THD::KILLED_NO_VALUE)
    killed_status_arg= thd_arg->killed;
  error_code=
    (killed_status_arg == THD::NOT_KILLED) ? thd_arg->net.last_errno :
    ((thd_arg->system_thread & SYSTEM_THREAD_DELAYED_INSERT) ? 0 :
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     thd_arg->killed_errno());
1648
  
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  time(&end_time);
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  exec_time = (ulong) (end_time  - thd_arg->start_time);
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  /**
    @todo this means that if we have no catalog, then it is replicated
    as an existing catalog of length zero. is that safe? /sven
  */
1655
  catalog_len = (catalog) ? (uint32) strlen(catalog) : 0;
1656
  /* status_vars_len is set just before writing the event */
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  db_len = (db) ? (uint32) strlen(db) : 0;
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  if (thd_arg->variables.collation_database != thd_arg->db_charset)
    charset_database_number= thd_arg->variables.collation_database->number;
  
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  /*
    If we don't use flags2 for anything else than options contained in
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    thd_arg->options, it would be more efficient to flags2=thd_arg->options
1664
    (OPTIONS_WRITTEN_TO_BIN_LOG would be used only at reading time).
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    But it's likely that we don't want to use 32 bits for 3 bits; in the future
    we will probably want to reclaim the 29 bits. So we need the &.
  */
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  flags2= (uint32) (thd_arg->options & OPTIONS_WRITTEN_TO_BIN_LOG);
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  DBUG_ASSERT(thd_arg->variables.character_set_client->number < 256*256);
  DBUG_ASSERT(thd_arg->variables.collation_connection->number < 256*256);
  DBUG_ASSERT(thd_arg->variables.collation_server->number < 256*256);
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  DBUG_ASSERT(thd_arg->variables.character_set_client->mbminlen == 1);
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  int2store(charset, thd_arg->variables.character_set_client->number);
  int2store(charset+2, thd_arg->variables.collation_connection->number);
  int2store(charset+4, thd_arg->variables.collation_server->number);
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  if (thd_arg->time_zone_used)
  {
    /*
      Note that our event becomes dependent on the Time_zone object
      representing the time zone. Fortunately such objects are never deleted
      or changed during mysqld's lifetime.
    */
    time_zone_len= thd_arg->variables.time_zone->get_name()->length();
    time_zone_str= thd_arg->variables.time_zone->get_name()->ptr();
  }
  else
    time_zone_len= 0;
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  DBUG_PRINT("info",("Query_log_event has flags2: %lu  sql_mode: %lu",
                     (ulong) flags2, sql_mode));
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}
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#endif /* MYSQL_CLIENT */
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/* 2 utility functions for the next method */

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/**
   Read a string with length from memory.

   This function reads the string-with-length stored at
   <code>src</code> and extract the length into <code>*len</code> and
   a pointer to the start of the string into <code>*dst</code>. The
   string can then be copied using <code>memcpy()</code> with the
   number of bytes given in <code>*len</code>.

   @param src Pointer to variable holding a pointer to the memory to
              read the string from.
   @param dst Pointer to variable holding a pointer where the actual
              string starts. Starting from this position, the string
              can be copied using @c memcpy().
   @param len Pointer to variable where the length will be stored.
   @param end One-past-the-end of the memory where the string is
              stored.

   @return    Zero if the entire string can be copied successfully,
              @c UINT_MAX if the length could not be read from memory
              (that is, if <code>*src >= end</code>), otherwise the
              number of bytes that are missing to read the full
              string, which happends <code>*dst + *len >= end</code>.
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*/
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static int
get_str_len_and_pointer(const Log_event::Byte **src,
                        const char **dst,
                        uint *len,
                        const Log_event::Byte *end)
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{
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  if (*src >= end)
    return -1;       // Will be UINT_MAX in two-complement arithmetics
  uint length= **src;
  if (length > 0)
  {
    if (*src + length >= end)
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      return *src + length - end + 1;       // Number of bytes missing
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    *dst= (char *)*src + 1;                    // Will be copied later
  }
  *len= length;
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  *src+= length + 1;
  return 0;
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}

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static void copy_str_and_move(const char **src, 
                              Log_event::Byte **dst, 
                              uint len)
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{
  memcpy(*dst, *src, len);
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  *src= (const char *)*dst;
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  (*dst)+= len;
  *(*dst)++= 0;
}

1750

1751
#ifndef DBUG_OFF
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static char const *
code_name(int code)
{
  static char buf[255];
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  switch (code) {
  case Q_FLAGS2_CODE: return "Q_FLAGS2_CODE";
  case Q_SQL_MODE_CODE: return "Q_SQL_MODE_CODE";
  case Q_CATALOG_CODE: return "Q_CATALOG_CODE";
  case Q_AUTO_INCREMENT: return "Q_AUTO_INCREMENT";
  case Q_CHARSET_CODE: return "Q_CHARSET_CODE";
  case Q_TIME_ZONE_CODE: return "Q_TIME_ZONE_CODE";
  case Q_CATALOG_NZ_CODE: return "Q_CATALOG_NZ_CODE";
  case Q_LC_TIME_NAMES_CODE: return "Q_LC_TIME_NAMES_CODE";
  case Q_CHARSET_DATABASE_CODE: return "Q_CHARSET_DATABASE_CODE";
  }
  sprintf(buf, "CODE#%d", code);
  return buf;
}
1770
#endif
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/**
   Macro to check that there is enough space to read from memory.

   @param PTR Pointer to memory
   @param END End of memory
   @param CNT Number of bytes that should be read.
 */
1779 1780 1781 1782 1783 1784 1785 1786 1787
#define CHECK_SPACE(PTR,END,CNT)                      \
  do {                                                \
    DBUG_PRINT("info", ("Read %s", code_name(pos[-1]))); \
    DBUG_ASSERT((PTR) + (CNT) <= (END));              \
    if ((PTR) + (CNT) > (END)) {                      \
      DBUG_PRINT("info", ("query= 0"));               \
      query= 0;                                       \
      DBUG_VOID_RETURN;                               \
    }                                                 \
1788 1789
  } while (0)

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/*
1791
  Query_log_event::Query_log_event()
1792
  This is used by the SQL slave thread to prepare the event before execution.
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*/
1794

1795
Query_log_event::Query_log_event(const char* buf, uint event_len,
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                                 const Format_description_log_event
                                 *description_event,
1798
                                 Log_event_type event_type)
1799
  :Log_event(buf, description_event), data_buf(0), query(NullS),
1800
   db(NullS), catalog_len(0), status_vars_len(0),
1801
   flags2_inited(0), sql_mode_inited(0), charset_inited(0),
1802
   auto_increment_increment(1), auto_increment_offset(1),
1803
   time_zone_len(0), lc_time_names_number(0), charset_database_number(0)
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{
  ulong data_len;
1806 1807
  uint32 tmp;
  uint8 common_header_len, post_header_len;
1808 1809
  Log_event::Byte *start;
  const Log_event::Byte *end;
1810
  bool catalog_nz= 1;
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  DBUG_ENTER("Query_log_event::Query_log_event(char*,...)");

  common_header_len= description_event->common_header_len;
1814
  post_header_len= description_event->post_header_len[event_type-1];
1815
  DBUG_PRINT("info",("event_len: %u  common_header_len: %d  post_header_len: %d",
1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829
                     event_len, common_header_len, post_header_len));
  
  /*
    We test if the event's length is sensible, and if so we compute data_len.
    We cannot rely on QUERY_HEADER_LEN here as it would not be format-tolerant.
    We use QUERY_HEADER_MINIMAL_LEN which is the same for 3.23, 4.0 & 5.0.
  */
  if (event_len < (uint)(common_header_len + post_header_len))
    DBUG_VOID_RETURN;				
  data_len = event_len - (common_header_len + post_header_len);
  buf+= common_header_len;
  
  slave_proxy_id= thread_id = uint4korr(buf + Q_THREAD_ID_OFFSET);
  exec_time = uint4korr(buf + Q_EXEC_TIME_OFFSET);
1830
  db_len = (uint)buf[Q_DB_LEN_OFFSET]; // TODO: add a check of all *_len vars
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  error_code = uint2korr(buf + Q_ERR_CODE_OFFSET);

  /*
    5.0 format starts here.
    Depending on the format, we may or not have affected/warnings etc
    The remnent post-header to be parsed has length:
  */
  tmp= post_header_len - QUERY_HEADER_MINIMAL_LEN; 
  if (tmp)
1840
  {
1841
    status_vars_len= uint2korr(buf + Q_STATUS_VARS_LEN_OFFSET);
1842 1843 1844 1845 1846 1847
    /*
      Check if status variable length is corrupt and will lead to very
      wrong data. We could be even more strict and require data_len to
      be even bigger, but this will suffice to catch most corruption
      errors that can lead to a crash.
    */
1848
    if (status_vars_len > min(data_len, MAX_SIZE_LOG_EVENT_STATUS))
1849
    {
1850
      DBUG_PRINT("info", ("status_vars_len (%u) > data_len (%lu); query= 0",
1851
                          status_vars_len, data_len));
1852 1853 1854
      query= 0;
      DBUG_VOID_RETURN;
    }
1855 1856 1857 1858
    data_len-= status_vars_len;
    DBUG_PRINT("info", ("Query_log_event has status_vars_len: %u",
                        (uint) status_vars_len));
    tmp-= 2;
1859
  }
1860 1861 1862 1863 1864 1865
  /*
    We have parsed everything we know in the post header for QUERY_EVENT,
    the rest of post header is either comes from older version MySQL or
    dedicated to derived events (e.g. Execute_load_query...)
  */

1866 1867
  /* variable-part: the status vars; only in MySQL 5.0  */
  
1868 1869 1870
  start= (Log_event::Byte*) (buf+post_header_len);
  end= (const Log_event::Byte*) (start+status_vars_len);
  for (const Log_event::Byte* pos= start; pos < end;)
1871
  {
1872 1873
    switch (*pos++) {
    case Q_FLAGS2_CODE:
1874
      CHECK_SPACE(pos, end, 4);
1875 1876
      flags2_inited= 1;
      flags2= uint4korr(pos);
1877
      DBUG_PRINT("info",("In Query_log_event, read flags2: %lu", (ulong) flags2));
1878 1879 1880 1881 1882 1883 1884
      pos+= 4;
      break;
    case Q_SQL_MODE_CODE:
    {
#ifndef DBUG_OFF
      char buff[22];
#endif
1885
      CHECK_SPACE(pos, end, 8);
1886 1887 1888 1889 1890 1891 1892
      sql_mode_inited= 1;
      sql_mode= (ulong) uint8korr(pos); // QQ: Fix when sql_mode is ulonglong
      DBUG_PRINT("info",("In Query_log_event, read sql_mode: %s",
			 llstr(sql_mode, buff)));
      pos+= 8;
      break;
    }
1893
    case Q_CATALOG_NZ_CODE:
1894
      DBUG_PRINT("info", ("case Q_CATALOG_NZ_CODE; pos: 0x%lx; end: 0x%lx",
1895
                          (ulong) pos, (ulong) end));
1896 1897
      if (get_str_len_and_pointer(&pos, &catalog, &catalog_len, end))
      {
1898
        DBUG_PRINT("info", ("query= 0"));
1899 1900 1901
        query= 0;
        DBUG_VOID_RETURN;
      }
1902 1903
      break;
    case Q_AUTO_INCREMENT:
1904
      CHECK_SPACE(pos, end, 4);
1905 1906 1907 1908
      auto_increment_increment= uint2korr(pos);
      auto_increment_offset=    uint2korr(pos+2);
      pos+= 4;
      break;
1909 1910
    case Q_CHARSET_CODE:
    {
1911
      CHECK_SPACE(pos, end, 6);
1912 1913 1914 1915 1916
      charset_inited= 1;
      memcpy(charset, pos, 6);
      pos+= 6;
      break;
    }
1917 1918
    case Q_TIME_ZONE_CODE:
    {
1919 1920
      if (get_str_len_and_pointer(&pos, &time_zone_str, &time_zone_len, end))
      {
1921
        DBUG_PRINT("info", ("Q_TIME_ZONE_CODE: query= 0"));
1922 1923 1924
        query= 0;
        DBUG_VOID_RETURN;
      }
1925 1926
      break;
    }
1927
    case Q_CATALOG_CODE: /* for 5.0.x where 0<=x<=3 masters */
1928
      CHECK_SPACE(pos, end, 1);
1929 1930
      if ((catalog_len= *pos))
        catalog= (char*) pos+1;                           // Will be copied later
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      CHECK_SPACE(pos, end, catalog_len + 2);
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      pos+= catalog_len+2; // leap over end 0
      catalog_nz= 0; // catalog has end 0 in event
      break;
1935
    case Q_LC_TIME_NAMES_CODE:
1936
      CHECK_SPACE(pos, end, 2);
1937 1938 1939
      lc_time_names_number= uint2korr(pos);
      pos+= 2;
      break;
1940
    case Q_CHARSET_DATABASE_CODE:
1941
      CHECK_SPACE(pos, end, 2);
1942 1943 1944
      charset_database_number= uint2korr(pos);
      pos+= 2;
      break;
1945 1946 1947 1948
    default:
      /* That's why you must write status vars in growing order of code */
      DBUG_PRINT("info",("Query_log_event has unknown status vars (first has\
 code: %u), skipping the rest of them", (uint) *(pos-1)));
1949
      pos= (const uchar*) end;                         // Break loop
1950
    }
1951
  }
1952
  
1953
#if !defined(MYSQL_CLIENT) && defined(HAVE_QUERY_CACHE)
1954 1955 1956 1957 1958 1959
  if (!(start= data_buf = (Log_event::Byte*) my_malloc(catalog_len + 1 +
                                              time_zone_len + 1 +
                                              data_len + 1 +
                                              QUERY_CACHE_FLAGS_SIZE +
                                              db_len + 1,
                                              MYF(MY_WME))))
1960
#else
1961 1962 1963 1964
  if (!(start= data_buf = (Log_event::Byte*) my_malloc(catalog_len + 1 +
                                             time_zone_len + 1 +
                                             data_len + 1,
                                             MYF(MY_WME))))
1965
#endif
1966
      DBUG_VOID_RETURN;
1967
  if (catalog_len)                                  // If catalog is given
1968
  {
1969 1970 1971 1972 1973
    /**
      @todo we should clean up and do only copy_str_and_move; it
      works for both cases.  Then we can remove the catalog_nz
      flag. /sven
    */
1974
    if (likely(catalog_nz)) // true except if event comes from 5.0.0|1|2|3.
1975
      copy_str_and_move(&catalog, &start, catalog_len);
1976 1977 1978
    else
    {
      memcpy(start, catalog, catalog_len+1); // copy end 0
1979
      catalog= (const char *)start;
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      start+= catalog_len+1;
    }
1982
  }
1983
  if (time_zone_len)
1984
    copy_str_and_move(&time_zone_str, &start, time_zone_len);
1985

1986 1987 1988 1989 1990 1991 1992
  /**
    if time_zone_len or catalog_len are 0, then time_zone and catalog
    are uninitialized at this point.  shouldn't they point to the
    zero-length null-terminated strings we allocated space for in the
    my_alloc call above? /sven
  */

1993
  /* A 2nd variable part; this is common to all versions */ 
1994
  memcpy((char*) start, end, data_len);          // Copy db and query
1995
  start[data_len]= '\0';              // End query with \0 (For safetly)
1996 1997
  db= (char *)start;
  query= (char *)(start + db_len + 1);
1998 1999
  q_len= data_len - db_len -1;
  DBUG_VOID_RETURN;
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2000 2001
}

2002

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2003
/*
2004
  Query_log_event::print()
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2005
*/
2006

2007
#ifdef MYSQL_CLIENT
2008
void Query_log_event::print_query_header(IO_CACHE* file,
2009
					 PRINT_EVENT_INFO* print_event_info)
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2010
{
2011
  // TODO: print the catalog ??
2012
  char buff[40],*end;				// Enough for SET TIMESTAMP
2013 2014 2015
  bool different_db= 1;
  uint32 tmp;

2016
  if (!print_event_info->short_form)
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2017
  {
2018 2019 2020 2021
    print_header(file, print_event_info, FALSE);
    my_b_printf(file, "\t%s\tthread_id=%lu\texec_time=%lu\terror_code=%d\n",
                get_type_str(), (ulong) thread_id, (ulong) exec_time,
                error_code);
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2022 2023
  }

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2024
  if (!(flags & LOG_EVENT_SUPPRESS_USE_F) && db)
2025
  {
2026 2027
    if (different_db= memcmp(print_event_info->db, db, db_len + 1))
      memcpy(print_event_info->db, db, db_len + 1);
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2028
    if (db[0] && different_db) 
2029
      my_b_printf(file, "use %s%s\n", db, print_event_info->delimiter);
2030
  }
2031

2032
  end=int10_to_str((long) when, strmov(buff,"SET TIMESTAMP="),10);
2033
  end= strmov(end, print_event_info->delimiter);
2034
  *end++='\n';
2035
  my_b_write(file, (uchar*) buff, (uint) (end-buff));
2036
  if (flags & LOG_EVENT_THREAD_SPECIFIC_F)
2037 2038
    my_b_printf(file,"SET @@session.pseudo_thread_id=%lu%s\n",
                (ulong)thread_id, print_event_info->delimiter);
2039

2040
  /*
2041 2042 2043
    If flags2_inited==0, this is an event from 3.23 or 4.0; nothing to
    print (remember we don't produce mixed relay logs so there cannot be
    5.0 events before that one so there is nothing to reset).
2044 2045 2046 2047
  */
  if (likely(flags2_inited)) /* likely as this will mainly read 5.0 logs */
  {
    /* tmp is a bitmask of bits which have changed. */
2048
    if (likely(print_event_info->flags2_inited)) 
2049
      /* All bits which have changed */
2050
      tmp= (print_event_info->flags2) ^ flags2;
2051 2052
    else /* that's the first Query event we read */
    {
2053
      print_event_info->flags2_inited= 1;
2054 2055 2056 2057 2058 2059
      tmp= ~((uint32)0); /* all bits have changed */
    }

    if (unlikely(tmp)) /* some bits have changed */
    {
      bool need_comma= 0;
2060
      my_b_printf(file, "SET ");
2061 2062 2063 2064 2065 2066
      print_set_option(file, tmp, OPTION_NO_FOREIGN_KEY_CHECKS, ~flags2,
                   "@@session.foreign_key_checks", &need_comma);
      print_set_option(file, tmp, OPTION_AUTO_IS_NULL, flags2,
                   "@@session.sql_auto_is_null", &need_comma);
      print_set_option(file, tmp, OPTION_RELAXED_UNIQUE_CHECKS, ~flags2,
                   "@@session.unique_checks", &need_comma);
2067
      my_b_printf(file,"%s\n", print_event_info->delimiter);
2068
      print_event_info->flags2= flags2;
2069 2070 2071 2072
    }
  }

  /*
2073 2074 2075 2076 2077 2078 2079 2080 2081 2082
    Now the session variables;
    it's more efficient to pass SQL_MODE as a number instead of a
    comma-separated list.
    FOREIGN_KEY_CHECKS, SQL_AUTO_IS_NULL, UNIQUE_CHECKS are session-only
    variables (they have no global version; they're not listed in
    sql_class.h), The tests below work for pure binlogs or pure relay
    logs. Won't work for mixed relay logs but we don't create mixed
    relay logs (that is, there is no relay log with a format change
    except within the 3 first events, which mysqlbinlog handles
    gracefully). So this code should always be good.
2083 2084 2085 2086
  */

  if (likely(sql_mode_inited))
  {
2087
    if (unlikely(!print_event_info->sql_mode_inited)) /* first Query event */
2088
    {
2089
      print_event_info->sql_mode_inited= 1;
2090
      /* force a difference to force write */
2091
      print_event_info->sql_mode= ~sql_mode;
2092
    }
2093
    if (unlikely(print_event_info->sql_mode != sql_mode))
2094
    {
2095 2096
      my_b_printf(file,"SET @@session.sql_mode=%lu%s\n",
                  (ulong)sql_mode, print_event_info->delimiter);
2097
      print_event_info->sql_mode= sql_mode;
2098 2099
    }
  }
2100 2101
  if (print_event_info->auto_increment_increment != auto_increment_increment ||
      print_event_info->auto_increment_offset != auto_increment_offset)
2102
  {
2103 2104 2105
    my_b_printf(file,"SET @@session.auto_increment_increment=%lu, @@session.auto_increment_offset=%lu%s\n",
                auto_increment_increment,auto_increment_offset,
                print_event_info->delimiter);
2106 2107
    print_event_info->auto_increment_increment= auto_increment_increment;
    print_event_info->auto_increment_offset=    auto_increment_offset;
2108 2109
  }

2110 2111
  /* TODO: print the catalog when we feature SET CATALOG */

2112 2113
  if (likely(charset_inited))
  {
2114
    if (unlikely(!print_event_info->charset_inited)) /* first Query event */
2115
    {
2116 2117
      print_event_info->charset_inited= 1;
      print_event_info->charset[0]= ~charset[0]; // force a difference to force write
2118
    }
2119
    if (unlikely(bcmp((uchar*) print_event_info->charset, (uchar*) charset, 6)))
2120
    {
2121 2122 2123
      CHARSET_INFO *cs_info= get_charset(uint2korr(charset), MYF(MY_WME));
      if (cs_info)
      {
2124
        /* for mysql client */
2125 2126
        my_b_printf(file, "/*!\\C %s */%s\n",
                    cs_info->csname, print_event_info->delimiter);
2127
      }
2128 2129 2130 2131
      my_b_printf(file,"SET "
                  "@@session.character_set_client=%d,"
                  "@@session.collation_connection=%d,"
                  "@@session.collation_server=%d"
2132
                  "%s\n",
2133 2134
                  uint2korr(charset),
                  uint2korr(charset+2),
2135 2136
                  uint2korr(charset+4),
                  print_event_info->delimiter);
2137
      memcpy(print_event_info->charset, charset, 6);
2138 2139
    }
  }
2140 2141
  if (time_zone_len)
  {
2142 2143
    if (bcmp((uchar*) print_event_info->time_zone_str,
             (uchar*) time_zone_str, time_zone_len+1))
2144
    {
2145 2146
      my_b_printf(file,"SET @@session.time_zone='%s'%s\n",
                  time_zone_str, print_event_info->delimiter);
2147
      memcpy(print_event_info->time_zone_str, time_zone_str, time_zone_len+1);
2148 2149
    }
  }
2150 2151
  if (lc_time_names_number != print_event_info->lc_time_names_number)
  {
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2152 2153
    my_b_printf(file, "SET @@session.lc_time_names=%d%s\n",
                lc_time_names_number, print_event_info->delimiter);
2154 2155
    print_event_info->lc_time_names_number= lc_time_names_number;
  }
2156 2157 2158
  if (charset_database_number != print_event_info->charset_database_number)
  {
    if (charset_database_number)
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2159 2160
      my_b_printf(file, "SET @@session.collation_database=%d%s\n",
                  charset_database_number, print_event_info->delimiter);
2161
    else
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2162 2163
      my_b_printf(file, "SET @@session.collation_database=DEFAULT%s\n",
                  print_event_info->delimiter);
2164 2165
    print_event_info->charset_database_number= charset_database_number;
  }
2166 2167
}

2168

2169
void Query_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
2170
{
2171 2172 2173
  Write_on_release_cache cache(&print_event_info->head_cache, file);

  print_query_header(&cache, print_event_info);
2174
  my_b_write(&cache, (uchar*) query, q_len);
2175
  my_b_printf(&cache, "%s\n", print_event_info->delimiter);
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2176
}
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2177
#endif /* MYSQL_CLIENT */
2178

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2179

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2180
/*
2181
  Query_log_event::do_apply_event()
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2182
*/
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2183

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SCRUM  
hf@deer.mysql.r18.ru committed
2184
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
2185

2186
int Query_log_event::do_apply_event(Relay_log_info const *rli)
2187
{
2188
  return do_apply_event(rli, query, q_len);
2189 2190 2191
}


2192
int Query_log_event::do_apply_event(Relay_log_info const *rli,
2193
                                      const char *query_arg, uint32 q_len_arg)
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2194
{
2195
  LEX_STRING new_db;
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2196
  int expected_error,actual_error= 0;
2197
  /*
2198 2199 2200
    Colleagues: please never free(thd->catalog) in MySQL. This would
    lead to bugs as here thd->catalog is a part of an alloced block,
    not an entire alloced block (see
2201
    Query_log_event::do_apply_event()). Same for thd->db.  Thank
2202
    you.
2203
  */
2204
  thd->catalog= catalog_len ? (char *) catalog : (char *)"";
2205 2206 2207
  new_db.length= db_len;
  new_db.str= (char *) rpl_filter->get_rewrite_db(db, &new_db.length);
  thd->set_db(new_db.str, new_db.length);       /* allocates a copy of 'db' */
2208 2209
  thd->variables.auto_increment_increment= auto_increment_increment;
  thd->variables.auto_increment_offset=    auto_increment_offset;
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2210

2211
  /*
2212 2213 2214 2215 2216 2217 2218 2219
    InnoDB internally stores the master log position it has executed so far,
    i.e. the position just after the COMMIT event.
    When InnoDB will want to store, the positions in rli won't have
    been updated yet, so group_master_log_* will point to old BEGIN
    and event_master_log* will point to the beginning of current COMMIT.
    But log_pos of the COMMIT Query event is what we want, i.e. the pos of the
    END of the current log event (COMMIT). We save it in rli so that InnoDB can
    access it.
2220
  */
2221
  const_cast<Relay_log_info*>(rli)->future_group_master_log_pos= log_pos;
2222 2223
  DBUG_PRINT("info", ("log_pos: %lu", (ulong) log_pos));

2224 2225
  clear_all_errors(thd, const_cast<Relay_log_info*>(rli));
  const_cast<Relay_log_info*>(rli)->clear_tables_to_lock();
2226

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2227 2228 2229 2230 2231 2232 2233
  /*
    Note:   We do not need to execute reset_one_shot_variables() if this
            db_ok() test fails.
    Reason: The db stored in binlog events is the same for SET and for
            its companion query.  If the SET is ignored because of
            db_ok(), the companion query will also be ignored, and if
            the companion query is ignored in the db_ok() test of
2234
            ::do_apply_event(), then the companion SET also have so
2235
            we don't need to reset_one_shot_variables().
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2236
  */
2237
  if (rpl_filter->db_ok(thd->db))
2238 2239
  {
    thd->set_time((time_t)when);
2240 2241
    thd->query_length= q_len_arg;
    thd->query= (char*)query_arg;
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2242
    VOID(pthread_mutex_lock(&LOCK_thread_count));
2243
    thd->query_id = next_query_id();
2244
    VOID(pthread_mutex_unlock(&LOCK_thread_count));
2245
    thd->variables.pseudo_thread_id= thread_id;		// for temp tables
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monty@mysql.com committed
2246
    DBUG_PRINT("query",("%s",thd->query));
2247

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2248
    if (ignored_error_code((expected_error= error_code)) ||
2249
	!check_expected_error(thd,rli,expected_error))
2250 2251 2252
    {
      if (flags2_inited)
        /*
2253 2254
          all bits of thd->options which are 1 in OPTIONS_WRITTEN_TO_BIN_LOG
          must take their value from flags2.
2255
        */
2256
        thd->options= flags2|(thd->options & ~OPTIONS_WRITTEN_TO_BIN_LOG);
2257 2258
      /*
        else, we are in a 3.23/4.0 binlog; we previously received a
2259 2260
        Rotate_log_event which reset thd->options and sql_mode etc, so
        nothing to do.
2261 2262 2263 2264 2265
      */
      /*
        We do not replicate IGNORE_DIR_IN_CREATE. That is, if the master is a
        slave which runs with SQL_MODE=IGNORE_DIR_IN_CREATE, this should not
        force us to ignore the dir too. Imagine you are a ring of machines, and
2266 2267 2268
        one has a disk problem so that you temporarily need
        IGNORE_DIR_IN_CREATE on this machine; you don't want it to propagate
        elsewhere (you don't want all slaves to start ignoring the dirs).
2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286
      */
      if (sql_mode_inited)
        thd->variables.sql_mode=
          (ulong) ((thd->variables.sql_mode & MODE_NO_DIR_IN_CREATE) |
                   (sql_mode & ~(ulong) MODE_NO_DIR_IN_CREATE));
      if (charset_inited)
      {
        if (rli->cached_charset_compare(charset))
        {
          /* Verify that we support the charsets found in the event. */
          if (!(thd->variables.character_set_client=
                get_charset(uint2korr(charset), MYF(MY_WME))) ||
              !(thd->variables.collation_connection=
                get_charset(uint2korr(charset+2), MYF(MY_WME))) ||
              !(thd->variables.collation_server=
                get_charset(uint2korr(charset+4), MYF(MY_WME))))
          {
            /*
2287 2288 2289 2290
              We updated the thd->variables with nonsensical values (0). Let's
              set them to something safe (i.e. which avoids crash), and we'll
              stop with EE_UNKNOWN_CHARSET in compare_errors (unless set to
              ignore this error).
2291
            */
2292
            set_slave_thread_default_charset(thd, rli);
2293 2294 2295 2296 2297
            goto compare_errors;
          }
          thd->update_charset(); // for the charset change to take effect
        }
      }
2298 2299 2300
      if (time_zone_len)
      {
        String tmp(time_zone_str, time_zone_len, &my_charset_bin);
2301
        if (!(thd->variables.time_zone= my_tz_find(thd, &tmp)))
2302 2303 2304 2305 2306 2307
        {
          my_error(ER_UNKNOWN_TIME_ZONE, MYF(0), tmp.c_ptr());
          thd->variables.time_zone= global_system_variables.time_zone;
          goto compare_errors;
        }
      }
2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 2319 2320
      if (lc_time_names_number)
      {
        if (!(thd->variables.lc_time_names=
              my_locale_by_number(lc_time_names_number)))
        {
          my_printf_error(ER_UNKNOWN_ERROR,
                      "Unknown locale: '%d'", MYF(0), lc_time_names_number);
          thd->variables.lc_time_names= &my_locale_en_US;
          goto compare_errors;
        }
      }
      else
        thd->variables.lc_time_names= &my_locale_en_US;
2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335
      if (charset_database_number)
      {
        CHARSET_INFO *cs;
        if (!(cs= get_charset(charset_database_number, MYF(0))))
        {
          char buf[20];
          int10_to_str((int) charset_database_number, buf, -10);
          my_error(ER_UNKNOWN_COLLATION, MYF(0), buf);
          goto compare_errors;
        }
        thd->variables.collation_database= cs;
      }
      else
        thd->variables.collation_database= thd->db_charset;
      
2336
      /* Execute the query (note that we bypass dispatch_command()) */
2337 2338
      const char* found_semicolon= NULL;
      mysql_parse(thd, thd->query, thd->query_length, &found_semicolon);
2339
      log_slow_statement(thd);
2340
    }
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2341 2342
    else
    {
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2343
      /*
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2344 2345 2346 2347 2348
        The query got a really bad error on the master (thread killed etc),
        which could be inconsistent. Parse it to test the table names: if the
        replicate-*-do|ignore-table rules say "this query must be ignored" then
        we exit gracefully; otherwise we warn about the bad error and tell DBA
        to check/fix it.
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2349
      */
2350
      if (mysql_test_parse_for_slave(thd, thd->query, thd->query_length))
2351
        clear_all_errors(thd, const_cast<Relay_log_info*>(rli)); /* Can ignore query */
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2352
      else
2353
      {
2354
        rli->report(ERROR_LEVEL, expected_error, 
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
2355
                          "\
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2356
Query partially completed on the master (error on master: %d) \
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2357 2358 2359
and was aborted. There is a chance that your master is inconsistent at this \
point. If you are sure that your master is ok, run this query manually on the \
slave and then restart the slave with SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1; \
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2360
START SLAVE; . Query: '%s'", expected_error, thd->query);
2361
        thd->is_slave_error= 1;
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2362 2363 2364
      }
      goto end;
    }
2365

2366 2367
    /* If the query was not ignored, it is printed to the general log */
    if (thd->net.last_errno != ER_SLAVE_IGNORED_TABLE)
2368
      general_log_write(thd, COM_QUERY, thd->query, thd->query_length);
2369

2370
compare_errors:
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2371 2372

     /*
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2373 2374 2375 2376
      If we expected a non-zero error code, and we don't get the same error
      code, and none of them should be ignored.
    */
    DBUG_PRINT("info",("expected_error: %d  last_errno: %d",
2377
 		       expected_error, thd->net.last_errno));
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monty@mysql.com committed
2378
    if ((expected_error != (actual_error= thd->net.last_errno)) &&
2379 2380 2381
 	expected_error &&
 	!ignored_error_code(actual_error) &&
 	!ignored_error_code(expected_error))
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2382
    {
2383
      rli->report(ERROR_LEVEL, 0,
2384 2385
                      "\
Query caused different errors on master and slave.     \
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2386
Error on master: '%s' (%d), Error on slave: '%s' (%d). \
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2387
Default database: '%s'. Query: '%s'",
2388 2389 2390 2391 2392
                      ER_SAFE(expected_error),
                      expected_error,
                      actual_error ? thd->net.last_error: "no error",
                      actual_error,
                      print_slave_db_safe(db), query_arg);
2393
      thd->is_slave_error= 1;
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2394 2395 2396 2397 2398
    }
    /*
      If we get the same error code as expected, or they should be ignored. 
    */
    else if (expected_error == actual_error ||
2399
 	     ignored_error_code(actual_error))
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2400 2401
    {
      DBUG_PRINT("info",("error ignored"));
2402
      clear_all_errors(thd, const_cast<Relay_log_info*>(rli));
2403
      thd->killed= THD::NOT_KILLED;
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2404 2405 2406
    }
    /*
      Other cases: mostly we expected no error and get one.
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2407
    */
2408
    else if (thd->is_slave_error || thd->is_fatal_error)
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2409
    {
2410
      rli->report(ERROR_LEVEL, actual_error,
2411 2412 2413 2414
                      "Error '%s' on query. Default database: '%s'. Query: '%s'",
                      (actual_error ? thd->net.last_error :
                       "unexpected success or fatal error"),
                      print_slave_db_safe(thd->db), query_arg);
2415
      thd->is_slave_error= 1;
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2416
    }
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    /*
      TODO: compare the values of "affected rows" around here. Something
      like:
      if ((uint32) affected_in_event != (uint32) affected_on_slave)
      {
      sql_print_error("Slave: did not get the expected number of affected \
      rows running query from master - expected %d, got %d (this numbers \
      should have matched modulo 4294967296).", 0, ...);
2426
      thd->is_slave_error = 1;
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      }
      We may also want an option to tell the slave to ignore "affected"
      mismatch. This mismatch could be implemented with a new ER_ code, and
      to ignore it you would use --slave-skip-errors...
2431

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      To do the comparison we need to know the value of "affected" which the
      above mysql_parse() computed. And we need to know the value of
      "affected" in the master's binlog. Both will be implemented later. The
      important thing is that we now have the format ready to log the values
      of "affected" in the binlog. So we can release 5.0.0 before effectively
      logging "affected" and effectively comparing it.
    */
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  } /* End of if (db_ok(... */

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end:
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  VOID(pthread_mutex_lock(&LOCK_thread_count));
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  /*
    Probably we have set thd->query, thd->db, thd->catalog to point to places
    in the data_buf of this event. Now the event is going to be deleted
    probably, so data_buf will be freed, so the thd->... listed above will be
    pointers to freed memory. 
    So we must set them to 0, so that those bad pointers values are not later
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    used. Note that "cleanup" queries like automatic DROP TEMPORARY TABLE
    don't suffer from these assignments to 0 as DROP TEMPORARY
    TABLE uses the db.table syntax.
2452
  */
2453
  thd->catalog= 0;
2454
  thd->set_db(NULL, 0);                 /* will free the current database */
2455
  DBUG_PRINT("info", ("end: query= 0"));
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  thd->query= 0;			// just to be sure
2457
  thd->query_length= 0;
2458
  VOID(pthread_mutex_unlock(&LOCK_thread_count));
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  close_thread_tables(thd);      
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  /*
    As a disk space optimization, future masters will not log an event for
    LAST_INSERT_ID() if that function returned 0 (and thus they will be able
    to replace the THD::stmt_depends_on_first_successful_insert_id_in_prev_stmt
    variable by (THD->first_successful_insert_id_in_prev_stmt > 0) ; with the
    resetting below we are ready to support that.
  */
  thd->first_successful_insert_id_in_prev_stmt_for_binlog= 0;
  thd->first_successful_insert_id_in_prev_stmt= 0;
  thd->stmt_depends_on_first_successful_insert_id_in_prev_stmt= 0;
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  free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
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  return thd->is_slave_error;
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}

2474
int Query_log_event::do_update_pos(Relay_log_info *rli)
2475
{
2476
  /*
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    Note that we will not increment group* positions if we are just
    after a SET ONE_SHOT, because SET ONE_SHOT should not be separated
    from its following updating query.
2480
  */
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  if (thd->one_shot_set)
  {
    rli->inc_event_relay_log_pos();
    return 0;
  }
  else
    return Log_event::do_update_pos(rli);
2488
}
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Log_event::enum_skip_reason
Query_log_event::do_shall_skip(Relay_log_info *rli)
{
  DBUG_ENTER("Query_log_event::do_shall_skip");
  DBUG_PRINT("debug", ("query: %s; q_len: %d", query, q_len));
  DBUG_ASSERT(query && q_len > 0);

  if (rli->slave_skip_counter > 0)
  {
    if (strcmp("BEGIN", query) == 0)
    {
      thd->options|= OPTION_BEGIN;
      DBUG_RETURN(Log_event::continue_group(rli));
    }

    if (strcmp("COMMIT", query) == 0 || strcmp("ROLLBACK", query) == 0)
    {
      thd->options&= ~OPTION_BEGIN;
      DBUG_RETURN(Log_event::EVENT_SKIP_COUNT);
    }
  }
  DBUG_RETURN(Log_event::do_shall_skip(rli));
}

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#endif
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/**************************************************************************
	Muted_query_log_event methods
**************************************************************************/

#ifndef MYSQL_CLIENT
/*
  Muted_query_log_event::Muted_query_log_event()
*/
Muted_query_log_event::Muted_query_log_event()
  :Query_log_event()
{
}
#endif


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/**************************************************************************
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	Start_log_event_v3 methods
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**************************************************************************/
2536

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#ifndef MYSQL_CLIENT
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Start_log_event_v3::Start_log_event_v3()
  :Log_event(), created(0), binlog_version(BINLOG_VERSION),
   artificial_event(0), dont_set_created(0)
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{
  memcpy(server_version, ::server_version, ST_SERVER_VER_LEN);
}
#endif

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/*
2547
  Start_log_event_v3::pack_info()
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*/
2549

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#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
2551
void Start_log_event_v3::pack_info(Protocol *protocol)
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{
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  char buf[12 + ST_SERVER_VER_LEN + 14 + 22], *pos;
  pos= strmov(buf, "Server ver: ");
  pos= strmov(pos, server_version);
  pos= strmov(pos, ", Binlog ver: ");
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  pos= int10_to_str(binlog_version, pos, 10);
  protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
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}
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#endif
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/*
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  Start_log_event_v3::print()
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*/
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#ifdef MYSQL_CLIENT
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void Start_log_event_v3::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
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{
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  DBUG_ENTER("Start_log_event_v3::print");

  Write_on_release_cache cache(&print_event_info->head_cache, file,
                               Write_on_release_cache::FLUSH_F);

2575
  if (!print_event_info->short_form)
2576
  {
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    print_header(&cache, print_event_info, FALSE);
    my_b_printf(&cache, "\tStart: binlog v %d, server v %s created ",
                binlog_version, server_version);
    print_timestamp(&cache);
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    if (created)
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      my_b_printf(&cache," at startup");
    my_b_printf(&cache, "\n");
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    if (flags & LOG_EVENT_BINLOG_IN_USE_F)
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      my_b_printf(&cache, "# Warning: this binlog was not closed properly. "
                  "Most probably mysqld crashed writing it.\n");
2587
  }
2588 2589
  if (!artificial_event && created)
  {
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#ifdef WHEN_WE_HAVE_THE_RESET_CONNECTION_SQL_COMMAND
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    /*
      This is for mysqlbinlog: like in replication, we want to delete the stale
      tmp files left by an unclean shutdown of mysqld (temporary tables)
      and rollback unfinished transaction.
      Probably this can be done with RESET CONNECTION (syntax to be defined).
    */
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    my_b_printf(&cache,"RESET CONNECTION%s\n", print_event_info->delimiter);
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#else
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    my_b_printf(&cache,"ROLLBACK%s\n", print_event_info->delimiter);
2600
#endif
2601
  }
2602
  DBUG_VOID_RETURN;
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}
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#endif /* MYSQL_CLIENT */
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/*
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  Start_log_event_v3::Start_log_event_v3()
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*/
2609

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Start_log_event_v3::Start_log_event_v3(const char* buf,
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                                       const Format_description_log_event
                                       *description_event)
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  :Log_event(buf, description_event)
2614
{
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  buf+= description_event->common_header_len;
  binlog_version= uint2korr(buf+ST_BINLOG_VER_OFFSET);
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  memcpy(server_version, buf+ST_SERVER_VER_OFFSET,
	 ST_SERVER_VER_LEN);
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  // prevent overrun if log is corrupted on disk
  server_version[ST_SERVER_VER_LEN-1]= 0;
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  created= uint4korr(buf+ST_CREATED_OFFSET);
  /* We use log_pos to mark if this was an artificial event or not */
  artificial_event= (log_pos == 0);
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  dont_set_created= 1;
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}

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/*
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  Start_log_event_v3::write()
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*/
2631

2632
#ifndef MYSQL_CLIENT
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bool Start_log_event_v3::write(IO_CACHE* file)
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{
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  char buff[START_V3_HEADER_LEN];
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  int2store(buff + ST_BINLOG_VER_OFFSET,binlog_version);
  memcpy(buff + ST_SERVER_VER_OFFSET,server_version,ST_SERVER_VER_LEN);
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  if (!dont_set_created)
    created= when= get_time();
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  int4store(buff + ST_CREATED_OFFSET,created);
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  return (write_header(file, sizeof(buff)) ||
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          my_b_safe_write(file, (uchar*) buff, sizeof(buff)));
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}
2644
#endif
2645

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/*
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  Start_log_event_v3::do_apply_event()
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  The master started

  IMPLEMENTATION
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    - To handle the case where the master died without having time to write
      DROP TEMPORARY TABLE, DO RELEASE_LOCK (prepared statements' deletion is
      TODO), we clean up all temporary tables that we got, if we are sure we
      can (see below).
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  TODO
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    - Remove all active user locks.
      Guilhem 2003-06: this is true but not urgent: the worst it can cause is
      the use of a bit of memory for a user lock which will not be used
      anymore. If the user lock is later used, the old one will be released. In
      other words, no deadlock problem.
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*/

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#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
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int Start_log_event_v3::do_apply_event(Relay_log_info const *rli)
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{
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  DBUG_ENTER("Start_log_event_v3::do_apply_event");
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  switch (binlog_version) {
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  case 3:
  case 4:
    /*
      This can either be 4.x (then a Start_log_event_v3 is only at master
      startup so we are sure the master has restarted and cleared his temp
      tables; the event always has 'created'>0) or 5.0 (then we have to test
      'created').
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    */
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    if (created)
    {
      close_temporary_tables(thd);
      cleanup_load_tmpdir();
    }
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    break;

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    /*
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       Now the older formats; in that case load_tmpdir is cleaned up by the I/O
       thread.
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    */
2690
  case 1:
2691
    if (strncmp(rli->relay_log.description_event_for_exec->server_version,
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                "3.23.57",7) >= 0 && created)
    {
      /*
        Can distinguish, based on the value of 'created': this event was
        generated at master startup.
      */
      close_temporary_tables(thd);
    }
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    /*
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      Otherwise, can't distinguish a Start_log_event generated at
      master startup and one generated by master FLUSH LOGS, so cannot
      be sure temp tables have to be dropped. So do nothing.
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    */
    break;
  default:
    /* this case is impossible */
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    DBUG_RETURN(1);
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  }
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  DBUG_RETURN(0);
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}
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#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
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/***************************************************************************
       Format_description_log_event methods
****************************************************************************/

/*
  Format_description_log_event 1st ctor.

  SYNOPSIS
    Format_description_log_event::Format_description_log_event
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      binlog_version              the binlog version for which we want to build
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                                  an event. Can be 1 (=MySQL 3.23), 3 (=4.0.x
                                  x>=2 and 4.1) or 4 (MySQL 5.0). Note that the
                                  old 4.0 (binlog version 2) is not supported;
                                  it should not be used for replication with
                                  5.0.

  DESCRIPTION
    Ctor. Can be used to create the event to write to the binary log (when the
    server starts or when FLUSH LOGS), or to create artificial events to parse
    binlogs from MySQL 3.23 or 4.x.
    When in a client, only the 2nd use is possible.
*/

Format_description_log_event::
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Format_description_log_event(uint8 binlog_ver, const char* server_ver)
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  :Start_log_event_v3()
{
  binlog_version= binlog_ver;
  switch (binlog_ver) {
  case 4: /* MySQL 5.0 */
    memcpy(server_version, ::server_version, ST_SERVER_VER_LEN);
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    DBUG_EXECUTE_IF("pretend_version_50034_in_binlog",
                    strmov(server_version, "5.0.34"););
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    common_header_len= LOG_EVENT_HEADER_LEN;
    number_of_event_types= LOG_EVENT_TYPES;
    /* we'll catch my_malloc() error in is_valid() */
    post_header_len=(uint8*) my_malloc(number_of_event_types*sizeof(uint8),
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                                       MYF(MY_ZEROFILL));
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    /*
      This long list of assignments is not beautiful, but I see no way to
      make it nicer, as the right members are #defines, not array members, so
      it's impossible to write a loop.
    */
    if (post_header_len)
    {
      post_header_len[START_EVENT_V3-1]= START_V3_HEADER_LEN;
      post_header_len[QUERY_EVENT-1]= QUERY_HEADER_LEN;
      post_header_len[ROTATE_EVENT-1]= ROTATE_HEADER_LEN;
      post_header_len[LOAD_EVENT-1]= LOAD_HEADER_LEN;
      post_header_len[CREATE_FILE_EVENT-1]= CREATE_FILE_HEADER_LEN;
      post_header_len[APPEND_BLOCK_EVENT-1]= APPEND_BLOCK_HEADER_LEN;
      post_header_len[EXEC_LOAD_EVENT-1]= EXEC_LOAD_HEADER_LEN;
      post_header_len[DELETE_FILE_EVENT-1]= DELETE_FILE_HEADER_LEN;
      post_header_len[NEW_LOAD_EVENT-1]= post_header_len[LOAD_EVENT-1];
      post_header_len[FORMAT_DESCRIPTION_EVENT-1]= FORMAT_DESCRIPTION_HEADER_LEN;
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      post_header_len[TABLE_MAP_EVENT-1]=    TABLE_MAP_HEADER_LEN;
      post_header_len[WRITE_ROWS_EVENT-1]=   ROWS_HEADER_LEN;
      post_header_len[UPDATE_ROWS_EVENT-1]=  ROWS_HEADER_LEN;
      post_header_len[DELETE_ROWS_EVENT-1]=  ROWS_HEADER_LEN;
      /*
        We here have the possibility to simulate a master of before we changed
        the table map id to be stored in 6 bytes: when it was stored in 4
        bytes (=> post_header_len was 6). This is used to test backward
        compatibility.
        This code can be removed after a few months (today is Dec 21st 2005),
        when we know that the 4-byte masters are not deployed anymore (check
        with Tomas Ulin first!), and the accompanying test (rpl_row_4_bytes)
        too.
      */
      DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master",
                      post_header_len[TABLE_MAP_EVENT-1]=
                      post_header_len[WRITE_ROWS_EVENT-1]=
                      post_header_len[UPDATE_ROWS_EVENT-1]=
                      post_header_len[DELETE_ROWS_EVENT-1]= 6;);
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      post_header_len[BEGIN_LOAD_QUERY_EVENT-1]= post_header_len[APPEND_BLOCK_EVENT-1];
      post_header_len[EXECUTE_LOAD_QUERY_EVENT-1]= EXECUTE_LOAD_QUERY_HEADER_LEN;
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      post_header_len[INCIDENT_EVENT-1]= INCIDENT_HEADER_LEN;
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    }
    break;

  case 1: /* 3.23 */
  case 3: /* 4.0.x x>=2 */
    /*
      We build an artificial (i.e. not sent by the master) event, which
      describes what those old master versions send.
    */
    if (binlog_ver==1)
      strmov(server_version, server_ver ? server_ver : "3.23");
    else
      strmov(server_version, server_ver ? server_ver : "4.0");
    common_header_len= binlog_ver==1 ? OLD_HEADER_LEN :
2805
      LOG_EVENT_MINIMAL_HEADER_LEN;
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    /*
      The first new event in binlog version 4 is Format_desc. So any event type
      after that does not exist in older versions. We use the events known by
      version 3, even if version 1 had only a subset of them (this is not a
      problem: it uses a few bytes for nothing but unifies code; it does not
      make the slave detect less corruptions).
    */
    number_of_event_types= FORMAT_DESCRIPTION_EVENT - 1;
    post_header_len=(uint8*) my_malloc(number_of_event_types*sizeof(uint8),
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                                       MYF(0));
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    if (post_header_len)
    {
      post_header_len[START_EVENT_V3-1]= START_V3_HEADER_LEN;
      post_header_len[QUERY_EVENT-1]= QUERY_HEADER_MINIMAL_LEN;
      post_header_len[STOP_EVENT-1]= 0;
      post_header_len[ROTATE_EVENT-1]= (binlog_ver==1) ? 0 : ROTATE_HEADER_LEN;
      post_header_len[INTVAR_EVENT-1]= 0;
      post_header_len[LOAD_EVENT-1]= LOAD_HEADER_LEN;
      post_header_len[SLAVE_EVENT-1]= 0;
      post_header_len[CREATE_FILE_EVENT-1]= CREATE_FILE_HEADER_LEN;
      post_header_len[APPEND_BLOCK_EVENT-1]= APPEND_BLOCK_HEADER_LEN;
      post_header_len[EXEC_LOAD_EVENT-1]= EXEC_LOAD_HEADER_LEN;
      post_header_len[DELETE_FILE_EVENT-1]= DELETE_FILE_HEADER_LEN;
      post_header_len[NEW_LOAD_EVENT-1]= post_header_len[LOAD_EVENT-1];
      post_header_len[RAND_EVENT-1]= 0;
      post_header_len[USER_VAR_EVENT-1]= 0;
    }
    break;
  default: /* Includes binlog version 2 i.e. 4.0.x x<=1 */
    post_header_len= 0; /* will make is_valid() fail */
    break;
  }
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  calc_server_version_split();
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}


/*
  The problem with this constructor is that the fixed header may have a
  length different from this version, but we don't know this length as we
  have not read the Format_description_log_event which says it, yet. This
  length is in the post-header of the event, but we don't know where the
2847
  post-header starts.
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  So this type of event HAS to:
  - either have the header's length at the beginning (in the header, at a
  fixed position which will never be changed), not in the post-header. That
  would make the header be "shifted" compared to other events.
  - or have a header of size LOG_EVENT_MINIMAL_HEADER_LEN (19), in all future
  versions, so that we know for sure.
  I (Guilhem) chose the 2nd solution. Rotate has the same constraint (because
  it is sent before Format_description_log_event).
*/

Format_description_log_event::
Format_description_log_event(const char* buf,
                             uint event_len,
                             const
                             Format_description_log_event*
2863
                             description_event)
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  :Start_log_event_v3(buf, description_event)
{
  DBUG_ENTER("Format_description_log_event::Format_description_log_event(char*,...)");
  buf+= LOG_EVENT_MINIMAL_HEADER_LEN;
  if ((common_header_len=buf[ST_COMMON_HEADER_LEN_OFFSET]) < OLD_HEADER_LEN)
    DBUG_VOID_RETURN; /* sanity check */
  number_of_event_types=
    event_len-(LOG_EVENT_MINIMAL_HEADER_LEN+ST_COMMON_HEADER_LEN_OFFSET+1);
  DBUG_PRINT("info", ("common_header_len=%d number_of_event_types=%d",
2873
                      common_header_len, number_of_event_types));
2874
  /* If alloc fails, we'll detect it in is_valid() */
2875
  post_header_len= (uint8*) my_memdup((uchar*)buf+ST_COMMON_HEADER_LEN_OFFSET+1,
2876
                                      number_of_event_types*
2877
                                      sizeof(*post_header_len), MYF(0));
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2878
  calc_server_version_split();
2879 2880 2881
  DBUG_VOID_RETURN;
}

2882
#ifndef MYSQL_CLIENT
2883 2884 2885 2886 2887 2888
bool Format_description_log_event::write(IO_CACHE* file)
{
  /*
    We don't call Start_log_event_v3::write() because this would make 2
    my_b_safe_write().
  */
2889
  uchar buff[FORMAT_DESCRIPTION_HEADER_LEN];
2890 2891
  int2store(buff + ST_BINLOG_VER_OFFSET,binlog_version);
  memcpy((char*) buff + ST_SERVER_VER_OFFSET,server_version,ST_SERVER_VER_LEN);
2892 2893
  if (!dont_set_created)
    created= when= get_time();
2894
  int4store(buff + ST_CREATED_OFFSET,created);
2895
  buff[ST_COMMON_HEADER_LEN_OFFSET]= LOG_EVENT_HEADER_LEN;
2896
  memcpy((char*) buff+ST_COMMON_HEADER_LEN_OFFSET+1, (uchar*) post_header_len,
2897 2898 2899 2900
         LOG_EVENT_TYPES);
  return (write_header(file, sizeof(buff)) ||
          my_b_safe_write(file, buff, sizeof(buff)));
}
2901
#endif
2902

2903
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
2904
int Format_description_log_event::do_apply_event(Relay_log_info const *rli)
2905
{
2906
  DBUG_ENTER("Format_description_log_event::do_apply_event");
2907

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2908
#ifdef USING_TRANSACTIONS
2909 2910 2911 2912
  /*
    As a transaction NEVER spans on 2 or more binlogs:
    if we have an active transaction at this point, the master died
    while writing the transaction to the binary log, i.e. while
2913 2914
    flushing the binlog cache to the binlog. XA guarantees that master has
    rolled back. So we roll back.
2915 2916 2917 2918 2919 2920 2921
    Note: this event could be sent by the master to inform us of the
    format of its binlog; in other words maybe it is not at its
    original place when it comes to us; we'll know this by checking
    log_pos ("artificial" events have log_pos == 0).
  */
  if (!artificial_event && created && thd->transaction.all.nht)
  {
2922
    /* This is not an error (XA is safe), just an information */
2923 2924 2925 2926 2927
    rli->report(INFORMATION_LEVEL, 0,
                "Rolling back unfinished transaction (no COMMIT "
                "or ROLLBACK in relay log). A probable cause is that "
                "the master died while writing the transaction to "
                "its binary log, thus rolled back too."); 
2928
    const_cast<Relay_log_info*>(rli)->cleanup_context(thd, 1);
2929
  }
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2930
#endif
2931
  /*
2932
    If this event comes from ourselves, there is no cleaning task to
2933
    perform, we don't call Start_log_event_v3::do_apply_event()
2934
    (this was just to update the log's description event).
2935
  */
2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951
  if (server_id != (uint32) ::server_id)
  {
    /*
      If the event was not requested by the slave i.e. the master sent
      it while the slave asked for a position >4, the event will make
      rli->group_master_log_pos advance. Say that the slave asked for
      position 1000, and the Format_desc event's end is 96. Then in
      the beginning of replication rli->group_master_log_pos will be
      0, then 96, then jump to first really asked event (which is
      >96). So this is ok.
    */
    DBUG_RETURN(Start_log_event_v3::do_apply_event(rli));
  }
  DBUG_RETURN(0);
}

2952
int Format_description_log_event::do_update_pos(Relay_log_info *rli)
2953 2954 2955 2956 2957
{
  /* save the information describing this binlog */
  delete rli->relay_log.description_event_for_exec;
  rli->relay_log.description_event_for_exec= this;

2958 2959 2960
  if (server_id == (uint32) ::server_id)
  {
    /*
2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973
      We only increase the relay log position if we are skipping
      events and do not touch any group_* variables, nor flush the
      relay log info.  If there is a crash, we will have to re-skip
      the events again, but that is a minor issue.

      If we do not skip stepping the group log position (and the
      server id was changed when restarting the server), it might well
      be that we start executing at a position that is invalid, e.g.,
      at a Rows_log_event or a Query_log_event preceeded by a
      Intvar_log_event instead of starting at a Table_map_log_event or
      the Intvar_log_event respectively.
     */
    rli->inc_event_relay_log_pos();
2974
    return 0;
2975
  }
2976 2977 2978
  else
  {
    return Log_event::do_update_pos(rli);
2979 2980 2981
  }
}

2982
Log_event::enum_skip_reason
2983
Format_description_log_event::do_shall_skip(Relay_log_info *rli)
2984
{
2985
  return Log_event::EVENT_SKIP_NOT;
2986
}
2987

2988 2989
#endif

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2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 3016 3017 3018 3019 3020

/**
   Splits the event's 'server_version' string into three numeric pieces stored
   into 'server_version_split':
   X.Y.Zabc (X,Y,Z numbers, a not a digit) -> {X,Y,Z}
   X.Yabc -> {X,Y,0}
   Xabc -> {X,0,0}
   'server_version_split' is then used for lookups to find if the server which
   created this event has some known bug.
*/
void Format_description_log_event::calc_server_version_split()
{
  char *p= server_version, *r;
  ulong number;
  for (uint i= 0; i<=2; i++)
  {
    number= strtoul(p, &r, 10);
    server_version_split[i]= (uchar)number;
    DBUG_ASSERT(number < 256); // fit in uchar
    p= r;
    DBUG_ASSERT(!((i == 0) && (*r != '.'))); // should be true in practice
    if (*r == '.')
      p++; // skip the dot
  }
  DBUG_PRINT("info",("Format_description_log_event::server_version_split:"
                     " '%s' %d %d %d", server_version,
                     server_version_split[0],
                     server_version_split[1], server_version_split[2]));
}


3021
  /**************************************************************************
3022
        Load_log_event methods
3023
   General note about Load_log_event: the binlogging of LOAD DATA INFILE is
3024
   going to be changed in 5.0 (or maybe in 5.1; not decided yet).
3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035 3036
   However, the 5.0 slave could still have to read such events (from a 4.x
   master), convert them (which just means maybe expand the header, when 5.0
   servers have a UID in events) (remember that whatever is after the header
   will be like in 4.x, as this event's format is not modified in 5.0 as we
   will use new types of events to log the new LOAD DATA INFILE features).
   To be able to read/convert, we just need to not assume that the common
   header is of length LOG_EVENT_HEADER_LEN (we must use the description
   event).
   Note that I (Guilhem) manually tested replication of a big LOAD DATA INFILE
   between 3.23 and 5.0, and between 4.0 and 5.0, and it works fine (and the
   positions displayed in SHOW SLAVE STATUS then are fine too).
  **************************************************************************/
3037

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3038
/*
3039
  Load_log_event::pack_info()
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3040
*/
3041

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3042
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
3043
uint Load_log_event::get_query_buffer_length()
3044
{
3045
  return
3046 3047
    5 + db_len + 3 +                        // "use DB; "
    18 + fname_len + 2 +                    // "LOAD DATA INFILE 'file''"
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3048
    7 +					    // LOCAL
3049
    9 +                                     // " REPLACE or IGNORE "
3050
    13 + table_name_len*2 +                 // "INTO TABLE `table`"
3051 3052 3053
    21 + sql_ex.field_term_len*4 + 2 +      // " FIELDS TERMINATED BY 'str'"
    23 + sql_ex.enclosed_len*4 + 2 +        // " OPTIONALLY ENCLOSED BY 'str'"
    12 + sql_ex.escaped_len*4 + 2 +         // " ESCAPED BY 'str'"
3054
    21 + sql_ex.line_term_len*4 + 2 +       // " LINES TERMINATED BY 'str'"
3055 3056
    19 + sql_ex.line_start_len*4 + 2 +      // " LINES STARTING BY 'str'"
    15 + 22 +                               // " IGNORE xxx  LINES"
3057
    3 + (num_fields-1)*2 + field_block_len; // " (field1, field2, ...)"
3058
}
3059

3060 3061 3062 3063 3064 3065 3066

void Load_log_event::print_query(bool need_db, char *buf,
                                 char **end, char **fn_start, char **fn_end)
{
  char *pos= buf;

  if (need_db && db && db_len)
3067
  {
3068 3069
    pos= strmov(pos, "use `");
    memcpy(pos, db, db_len);
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    pos= strmov(pos+db_len, "`; ");
3071
  }
3072

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3073
  pos= strmov(pos, "LOAD DATA ");
3074 3075 3076 3077

  if (fn_start)
    *fn_start= pos;

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3078 3079 3080
  if (check_fname_outside_temp_buf())
    pos= strmov(pos, "LOCAL ");
  pos= strmov(pos, "INFILE '");
3081
  memcpy(pos, fname, fname_len);
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  pos= strmov(pos+fname_len, "' ");
3083

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  if (sql_ex.opt_flags & REPLACE_FLAG)
3085
    pos= strmov(pos, " REPLACE ");
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3086
  else if (sql_ex.opt_flags & IGNORE_FLAG)
3087 3088
    pos= strmov(pos, " IGNORE ");

3089 3090 3091 3092 3093 3094
  pos= strmov(pos ,"INTO");

  if (fn_end)
    *fn_end= pos;

  pos= strmov(pos ," TABLE `");
3095 3096 3097
  memcpy(pos, table_name, table_name_len);
  pos+= table_name_len;

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3098
  /* We have to create all optinal fields as the default is not empty */
3099
  pos= strmov(pos, "` FIELDS TERMINATED BY ");
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3100 3101 3102 3103 3104
  pos= pretty_print_str(pos, sql_ex.field_term, sql_ex.field_term_len);
  if (sql_ex.opt_flags & OPT_ENCLOSED_FLAG)
    pos= strmov(pos, " OPTIONALLY ");
  pos= strmov(pos, " ENCLOSED BY ");
  pos= pretty_print_str(pos, sql_ex.enclosed, sql_ex.enclosed_len);
3105

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3106 3107
  pos= strmov(pos, " ESCAPED BY ");
  pos= pretty_print_str(pos, sql_ex.escaped, sql_ex.escaped_len);
3108

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3109 3110
  pos= strmov(pos, " LINES TERMINATED BY ");
  pos= pretty_print_str(pos, sql_ex.line_term, sql_ex.line_term_len);
3111 3112
  if (sql_ex.line_start_len)
  {
3113
    pos= strmov(pos, " STARTING BY ");
3114
    pos= pretty_print_str(pos, sql_ex.line_start, sql_ex.line_start_len);
3115
  }
3116

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3117
  if ((long) skip_lines > 0)
3118 3119
  {
    pos= strmov(pos, " IGNORE ");
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3120
    pos= longlong10_to_str((longlong) skip_lines, pos, 10);
3121 3122
    pos= strmov(pos," LINES ");    
  }
3123 3124 3125 3126

  if (num_fields)
  {
    uint i;
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3127
    const char *field= fields;
3128
    pos= strmov(pos, " (");
3129 3130 3131
    for (i = 0; i < num_fields; i++)
    {
      if (i)
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3132 3133 3134 3135
      {
        *pos++= ' ';
        *pos++= ',';
      }
3136
      memcpy(pos, field, field_lens[i]);
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3137 3138
      pos+=   field_lens[i];
      field+= field_lens[i]  + 1;
3139
    }
3140
    *pos++= ')';
3141
  }
3142

3143 3144 3145 3146 3147 3148 3149 3150
  *end= pos;
}


void Load_log_event::pack_info(Protocol *protocol)
{
  char *buf, *end;

3151
  if (!(buf= (char*) my_malloc(get_query_buffer_length(), MYF(MY_WME))))
3152 3153 3154
    return;
  print_query(TRUE, buf, &end, 0, 0);
  protocol->store(buf, end-buf, &my_charset_bin);
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3155
  my_free(buf, MYF(0));
3156
}
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3157
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
3158

3159

3160 3161
#ifndef MYSQL_CLIENT

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3162
/*
3163
  Load_log_event::write_data_header()
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3164
*/
3165

3166
bool Load_log_event::write_data_header(IO_CACHE* file)
3167
{
3168
  char buf[LOAD_HEADER_LEN];
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3169
  int4store(buf + L_THREAD_ID_OFFSET, slave_proxy_id);
3170 3171 3172 3173 3174
  int4store(buf + L_EXEC_TIME_OFFSET, exec_time);
  int4store(buf + L_SKIP_LINES_OFFSET, skip_lines);
  buf[L_TBL_LEN_OFFSET] = (char)table_name_len;
  buf[L_DB_LEN_OFFSET] = (char)db_len;
  int4store(buf + L_NUM_FIELDS_OFFSET, num_fields);
3175
  return my_b_safe_write(file, (uchar*)buf, LOAD_HEADER_LEN) != 0;
3176
}
3177

3178

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3179
/*
3180
  Load_log_event::write_data_body()
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3181
*/
3182

3183
bool Load_log_event::write_data_body(IO_CACHE* file)
3184
{
3185 3186 3187
  if (sql_ex.write_data(file))
    return 1;
  if (num_fields && fields && field_lens)
3188
  {
3189 3190
    if (my_b_safe_write(file, (uchar*)field_lens, num_fields) ||
	my_b_safe_write(file, (uchar*)fields, field_block_len))
3191
      return 1;
3192
  }
3193 3194 3195
  return (my_b_safe_write(file, (uchar*)table_name, table_name_len + 1) ||
	  my_b_safe_write(file, (uchar*)db, db_len + 1) ||
	  my_b_safe_write(file, (uchar*)fname, fname_len));
3196 3197
}

3198

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3199
/*
3200
  Load_log_event::Load_log_event()
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3201
*/
3202

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3203 3204 3205
Load_log_event::Load_log_event(THD *thd_arg, sql_exchange *ex,
			       const char *db_arg, const char *table_name_arg,
			       List<Item> &fields_arg,
3206
			       enum enum_duplicates handle_dup,
3207
			       bool ignore, bool using_trans)
3208
  :Log_event(thd_arg,
3209
             thd_arg->thread_specific_used ? LOG_EVENT_THREAD_SPECIFIC_F : 0,
3210
             using_trans),
3211
   thread_id(thd_arg->thread_id),
3212
   slave_proxy_id(thd_arg->variables.pseudo_thread_id),
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3213 3214
   num_fields(0),fields(0),
   field_lens(0),field_block_len(0),
3215
   table_name(table_name_arg ? table_name_arg : ""),
3216
   db(db_arg), fname(ex->file_name), local_fname(FALSE)
3217 3218 3219
{
  time_t end_time;
  time(&end_time);
3220
  exec_time = (ulong) (end_time  - thd_arg->start_time);
3221 3222 3223
  /* db can never be a zero pointer in 4.0 */
  db_len = (uint32) strlen(db);
  table_name_len = (uint32) strlen(table_name);
3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235 3236
  fname_len = (fname) ? (uint) strlen(fname) : 0;
  sql_ex.field_term = (char*) ex->field_term->ptr();
  sql_ex.field_term_len = (uint8) ex->field_term->length();
  sql_ex.enclosed = (char*) ex->enclosed->ptr();
  sql_ex.enclosed_len = (uint8) ex->enclosed->length();
  sql_ex.line_term = (char*) ex->line_term->ptr();
  sql_ex.line_term_len = (uint8) ex->line_term->length();
  sql_ex.line_start = (char*) ex->line_start->ptr();
  sql_ex.line_start_len = (uint8) ex->line_start->length();
  sql_ex.escaped = (char*) ex->escaped->ptr();
  sql_ex.escaped_len = (uint8) ex->escaped->length();
  sql_ex.opt_flags = 0;
  sql_ex.cached_new_format = -1;
3237
    
3238
  if (ex->dumpfile)
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3239
    sql_ex.opt_flags|= DUMPFILE_FLAG;
3240
  if (ex->opt_enclosed)
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3241
    sql_ex.opt_flags|= OPT_ENCLOSED_FLAG;
3242

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3243
  sql_ex.empty_flags= 0;
3244

3245
  switch (handle_dup) {
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3246
  case DUP_REPLACE:
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3247
    sql_ex.opt_flags|= REPLACE_FLAG;
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3248 3249 3250 3251
    break;
  case DUP_UPDATE:				// Impossible here
  case DUP_ERROR:
    break;	
3252
  }
3253 3254
  if (ignore)
    sql_ex.opt_flags|= IGNORE_FLAG;
3255

3256 3257 3258 3259 3260 3261 3262 3263 3264 3265
  if (!ex->field_term->length())
    sql_ex.empty_flags |= FIELD_TERM_EMPTY;
  if (!ex->enclosed->length())
    sql_ex.empty_flags |= ENCLOSED_EMPTY;
  if (!ex->line_term->length())
    sql_ex.empty_flags |= LINE_TERM_EMPTY;
  if (!ex->line_start->length())
    sql_ex.empty_flags |= LINE_START_EMPTY;
  if (!ex->escaped->length())
    sql_ex.empty_flags |= ESCAPED_EMPTY;
3266
    
3267
  skip_lines = ex->skip_lines;
3268

3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279
  List_iterator<Item> li(fields_arg);
  field_lens_buf.length(0);
  fields_buf.length(0);
  Item* item;
  while ((item = li++))
  {
    num_fields++;
    uchar len = (uchar) strlen(item->name);
    field_block_len += len + 1;
    fields_buf.append(item->name, len + 1);
    field_lens_buf.append((char*)&len, 1);
3280 3281
  }

3282 3283 3284
  field_lens = (const uchar*)field_lens_buf.ptr();
  fields = fields_buf.ptr();
}
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3285
#endif /* !MYSQL_CLIENT */
3286

3287

3288
/*
3289
  Load_log_event::Load_log_event()
3290

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3291 3292 3293
  NOTE
    The caller must do buf[event_len] = 0 before he starts using the
    constructed event.
3294 3295
*/

3296 3297 3298 3299
Load_log_event::Load_log_event(const char *buf, uint event_len,
                               const Format_description_log_event *description_event)
  :Log_event(buf, description_event), num_fields(0), fields(0),
   field_lens(0),field_block_len(0),
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   table_name(0), db(0), fname(0), local_fname(FALSE)
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{
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  DBUG_ENTER("Load_log_event");
3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314
  /*
    I (Guilhem) manually tested replication of LOAD DATA INFILE for 3.23->5.0,
    4.0->5.0 and 5.0->5.0 and it works.
  */
  if (event_len)
    copy_log_event(buf, event_len,
                   ((buf[EVENT_TYPE_OFFSET] == LOAD_EVENT) ?
                    LOAD_HEADER_LEN + 
                    description_event->common_header_len :
                    LOAD_HEADER_LEN + LOG_EVENT_HEADER_LEN),
                   description_event);
  /* otherwise it's a derived class, will call copy_log_event() itself */
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3315
  DBUG_VOID_RETURN;
3316 3317
}

3318

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monty@narttu.mysql.fi committed
3319
/*
3320
  Load_log_event::copy_log_event()
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3321
*/
3322

3323
int Load_log_event::copy_log_event(const char *buf, ulong event_len,
3324 3325
                                   int body_offset,
                                   const Format_description_log_event *description_event)
3326
{
3327
  DBUG_ENTER("Load_log_event::copy_log_event");
3328
  uint data_len;
3329
  char* buf_end = (char*)buf + event_len;
3330 3331
  /* this is the beginning of the post-header */
  const char* data_head = buf + description_event->common_header_len;
guilhem@mysql.com's avatar
guilhem@mysql.com committed
3332
  slave_proxy_id= thread_id= uint4korr(data_head + L_THREAD_ID_OFFSET);
3333 3334 3335 3336 3337
  exec_time = uint4korr(data_head + L_EXEC_TIME_OFFSET);
  skip_lines = uint4korr(data_head + L_SKIP_LINES_OFFSET);
  table_name_len = (uint)data_head[L_TBL_LEN_OFFSET];
  db_len = (uint)data_head[L_DB_LEN_OFFSET];
  num_fields = uint4korr(data_head + L_NUM_FIELDS_OFFSET);
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bk@work.mysql.com committed
3338
	  
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monty@hundin.mysql.fi committed
3339
  if ((int) event_len < body_offset)
monty@mysql.com's avatar
monty@mysql.com committed
3340
    DBUG_RETURN(1);
3341 3342 3343 3344
  /*
    Sql_ex.init() on success returns the pointer to the first byte after
    the sql_ex structure, which is the start of field lengths array.
  */
3345 3346 3347
  if (!(field_lens= (uchar*)sql_ex.init((char*)buf + body_offset,
                                        buf_end,
                                        buf[EVENT_TYPE_OFFSET] != LOAD_EVENT)))
monty@mysql.com's avatar
monty@mysql.com committed
3348
    DBUG_RETURN(1);
3349
  
3350
  data_len = event_len - body_offset;
3351
  if (num_fields > data_len) // simple sanity check against corruption
monty@mysql.com's avatar
monty@mysql.com committed
3352
    DBUG_RETURN(1);
3353
  for (uint i = 0; i < num_fields; i++)
3354
    field_block_len += (uint)field_lens[i] + 1;
3355

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bk@work.mysql.com committed
3356 3357 3358 3359
  fields = (char*)field_lens + num_fields;
  table_name  = fields + field_block_len;
  db = table_name + table_name_len + 1;
  fname = db + db_len + 1;
3360 3361
  fname_len = strlen(fname);
  // null termination is accomplished by the caller doing buf[event_len]=0
3362

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monty@mysql.com committed
3363
  DBUG_RETURN(0);
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bk@work.mysql.com committed
3364 3365 3366
}


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3367
/*
3368
  Load_log_event::print()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3369
*/
3370 3371

#ifdef MYSQL_CLIENT
3372
void Load_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
3373
{
3374
  print(file, print_event_info, 0);
3375 3376
}

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monty@narttu.mysql.fi committed
3377

3378
void Load_log_event::print(FILE* file_arg, PRINT_EVENT_INFO* print_event_info,
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3379
			   bool commented)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3380
{
3381 3382
  Write_on_release_cache cache(&print_event_info->head_cache, file_arg);

monty@mysql.com's avatar
monty@mysql.com committed
3383
  DBUG_ENTER("Load_log_event::print");
3384
  if (!print_event_info->short_form)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3385
  {
3386 3387 3388
    print_header(&cache, print_event_info, FALSE);
    my_b_printf(&cache, "\tQuery\tthread_id=%ld\texec_time=%ld\n",
                thread_id, exec_time);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3389 3390
  }

3391
  bool different_db= 1;
3392
  if (db)
3393
  {
3394 3395 3396 3397 3398 3399
    /*
      If the database is different from the one of the previous statement, we
      need to print the "use" command, and we update the last_db.
      But if commented, the "use" is going to be commented so we should not
      update the last_db.
    */
3400
    if ((different_db= memcmp(print_event_info->db, db, db_len + 1)) &&
3401
        !commented)
3402
      memcpy(print_event_info->db, db, db_len + 1);
3403
  }
3404
  
3405
  if (db && db[0] && different_db)
3406
    my_b_printf(&cache, "%suse %s%s\n", 
3407
            commented ? "# " : "",
3408
            db, print_event_info->delimiter);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3409

3410
  if (flags & LOG_EVENT_THREAD_SPECIFIC_F)
3411
    my_b_printf(&cache,"%sSET @@session.pseudo_thread_id=%lu%s\n",
3412 3413
            commented ? "# " : "", (ulong)thread_id,
            print_event_info->delimiter);
3414
  my_b_printf(&cache, "%sLOAD DATA ",
3415
              commented ? "# " : "");
3416
  if (check_fname_outside_temp_buf())
3417 3418
    my_b_printf(&cache, "LOCAL ");
  my_b_printf(&cache, "INFILE '%-*s' ", fname_len, fname);
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3419

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monty@narttu.mysql.fi committed
3420
  if (sql_ex.opt_flags & REPLACE_FLAG)
3421
    my_b_printf(&cache," REPLACE ");
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3422
  else if (sql_ex.opt_flags & IGNORE_FLAG)
3423
    my_b_printf(&cache," IGNORE ");
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3424
  
3425 3426 3427
  my_b_printf(&cache, "INTO TABLE `%s`", table_name);
  my_b_printf(&cache, " FIELDS TERMINATED BY ");
  pretty_print_str(&cache, sql_ex.field_term, sql_ex.field_term_len);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3428

monty@mysql.com's avatar
monty@mysql.com committed
3429
  if (sql_ex.opt_flags & OPT_ENCLOSED_FLAG)
3430 3431 3432
    my_b_printf(&cache," OPTIONALLY ");
  my_b_printf(&cache, " ENCLOSED BY ");
  pretty_print_str(&cache, sql_ex.enclosed, sql_ex.enclosed_len);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3433
     
3434 3435
  my_b_printf(&cache, " ESCAPED BY ");
  pretty_print_str(&cache, sql_ex.escaped, sql_ex.escaped_len);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3436
     
3437 3438
  my_b_printf(&cache," LINES TERMINATED BY ");
  pretty_print_str(&cache, sql_ex.line_term, sql_ex.line_term_len);
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monty@mysql.com committed
3439

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bk@work.mysql.com committed
3440

3441
  if (sql_ex.line_start)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3442
  {
3443 3444
    my_b_printf(&cache," STARTING BY ");
    pretty_print_str(&cache, sql_ex.line_start, sql_ex.line_start_len);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3445
  }
3446
  if ((long) skip_lines > 0)
3447
    my_b_printf(&cache, " IGNORE %ld LINES", (long) skip_lines);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3448

3449 3450 3451 3452
  if (num_fields)
  {
    uint i;
    const char* field = fields;
3453
    my_b_printf(&cache, " (");
3454
    for (i = 0; i < num_fields; i++)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3455
    {
3456
      if (i)
3457 3458
	my_b_printf(&cache, ",");
      my_b_printf(&cache, field);
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3459
	  
3460
      field += field_lens[i]  + 1;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3461
    }
3462
    my_b_printf(&cache, ")");
3463
  }
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3464

3465
  my_b_printf(&cache, "%s\n", print_event_info->delimiter);
monty@mysql.com's avatar
monty@mysql.com committed
3466
  DBUG_VOID_RETURN;
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3467
}
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3468
#endif /* MYSQL_CLIENT */
3469

3470

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3471
/*
3472
  Load_log_event::set_fields()
lars@mysql.com's avatar
lars@mysql.com committed
3473 3474 3475 3476 3477

  Note that this function can not use the member variable 
  for the database, since LOAD DATA INFILE on the slave
  can be for a different database than the current one.
  This is the reason for the affected_db argument to this method.
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3478
*/
3479

3480
#ifndef MYSQL_CLIENT
lars@mysql.com's avatar
lars@mysql.com committed
3481
void Load_log_event::set_fields(const char* affected_db, 
3482 3483
				List<Item> &field_list,
                                Name_resolution_context *context)
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3484 3485
{
  uint i;
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
3486
  const char* field = fields;
3487
  for (i= 0; i < num_fields; i++)
monty@hundin.mysql.fi's avatar
monty@hundin.mysql.fi committed
3488
  {
3489 3490
    field_list.push_back(new Item_field(context,
                                        affected_db, table_name, field));
3491
    field+= field_lens[i]  + 1;
monty@hundin.mysql.fi's avatar
monty@hundin.mysql.fi committed
3492
  }
bk@work.mysql.com's avatar
bk@work.mysql.com committed
3493
}
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monty@mashka.mysql.fi committed
3494
#endif /* !MYSQL_CLIENT */
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bk@work.mysql.com committed
3495 3496


hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
3497
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
3498 3499
/*
  Does the data loading job when executing a LOAD DATA on the slave
3500

monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
3501
  SYNOPSIS
3502
    Load_log_event::do_apply_event
3503 3504 3505
      net
      rli
      use_rli_only_for_errors	  - if set to 1, rli is provided to
3506
                                  Load_log_event::do_apply_event
3507 3508 3509 3510 3511 3512
                                  only for this function to have
                                  RPL_LOG_NAME and
                                  rli->last_slave_error, both being
                                  used by error reports. rli's
                                  position advancing is skipped (done
                                  by the caller which is
3513
                                  Execute_load_log_event::do_apply_event).
3514 3515 3516
                                  - if set to 0, rli is provided for
                                  full use, i.e. for error reports and
                                  position advancing.
3517

monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
3518 3519
  DESCRIPTION
    Does the data loading job when executing a LOAD DATA on the slave
3520

monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
3521
  RETURN VALUE
3522
    0           Success
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
3523 3524
    1    	Failure
*/
3525

3526
int Load_log_event::do_apply_event(NET* net, Relay_log_info const *rli,
3527
                                   bool use_rli_only_for_errors)
3528
{
3529 3530 3531 3532
  LEX_STRING new_db;
  new_db.length= db_len;
  new_db.str= (char *) rpl_filter->get_rewrite_db(db, &new_db.length);
  thd->set_db(new_db.str, new_db.length);
3533
  DBUG_ASSERT(thd->query == 0);
monty@mysql.com's avatar
monty@mysql.com committed
3534
  thd->query_length= 0;                         // Should not be needed
3535
  thd->is_slave_error= 0;
3536
  clear_all_errors(thd, const_cast<Relay_log_info*>(rli));
3537

3538
  /* see Query_log_event::do_apply_event() and BUG#13360 */
3539
  DBUG_ASSERT(!rli->m_table_map.count());
3540
  /*
3541
    Usually lex_start() is called by mysql_parse(), but we need it here
3542 3543
    as the present method does not call mysql_parse().
  */
3544 3545 3546
  lex_start(thd);
  mysql_reset_thd_for_next_command(thd);

monty@mysql.com's avatar
monty@mysql.com committed
3547
  if (!use_rli_only_for_errors)
3548
  {
3549 3550
    /*
      Saved for InnoDB, see comment in
3551
      Query_log_event::do_apply_event()
3552
    */
3553
    const_cast<Relay_log_info*>(rli)->future_group_master_log_pos= log_pos;
3554
    DBUG_PRINT("info", ("log_pos: %lu", (ulong) log_pos));
3555
  }
3556 3557
 
   /*
3558 3559 3560 3561 3562 3563 3564
    We test replicate_*_db rules. Note that we have already prepared
    the file to load, even if we are going to ignore and delete it
    now. So it is possible that we did a lot of disk writes for
    nothing. In other words, a big LOAD DATA INFILE on the master will
    still consume a lot of space on the slave (space in the relay log
    + space of temp files: twice the space of the file to load...)
    even if it will finally be ignored.  TODO: fix this; this can be
3565
    done by testing rules in Create_file_log_event::do_apply_event()
3566 3567 3568
    and then discarding Append_block and al. Another way is do the
    filtering in the I/O thread (more efficient: no disk writes at
    all).
lars@mysql.com's avatar
lars@mysql.com committed
3569 3570 3571 3572 3573 3574 3575 3576


    Note:   We do not need to execute reset_one_shot_variables() if this
            db_ok() test fails.
    Reason: The db stored in binlog events is the same for SET and for
            its companion query.  If the SET is ignored because of
            db_ok(), the companion query will also be ignored, and if
            the companion query is ignored in the db_ok() test of
3577
            ::do_apply_event(), then the companion SET also have so
3578
            we don't need to reset_one_shot_variables().
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3579
  */
3580
  if (rpl_filter->db_ok(thd->db))
3581
  {
3582 3583
    thd->set_time((time_t)when);
    VOID(pthread_mutex_lock(&LOCK_thread_count));
3584
    thd->query_id = next_query_id();
3585
    VOID(pthread_mutex_unlock(&LOCK_thread_count));
3586 3587 3588 3589 3590 3591
    /*
      Initing thd->row_count is not necessary in theory as this variable has no
      influence in the case of the slave SQL thread (it is used to generate a
      "data truncated" warning but which is absorbed and never gets to the
      error log); still we init it to avoid a Valgrind message.
    */
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monty@mysql.com committed
3592
    mysql_reset_errors(thd, 0);
3593 3594 3595

    TABLE_LIST tables;
    bzero((char*) &tables,sizeof(tables));
3596
    tables.db= thd->strmake(thd->db, thd->db_length);
3597
    tables.alias = tables.table_name = (char*) table_name;
3598
    tables.lock_type = TL_WRITE;
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3599
    tables.updating= 1;
bell@sanja.is.com.ua's avatar
bell@sanja.is.com.ua committed
3600

3601
    // the table will be opened in mysql_load    
3602
    if (rpl_filter->is_on() && !rpl_filter->tables_ok(thd->db, &tables))
3603 3604 3605 3606 3607 3608 3609 3610
    {
      // TODO: this is a bug - this needs to be moved to the I/O thread
      if (net)
        skip_load_data_infile(net);
    }
    else
    {
      char llbuff[22];
3611
      char *end;
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3612
      enum enum_duplicates handle_dup;
3613
      bool ignore= 0;
3614 3615
      char *load_data_query;

3616
      /*
3617 3618
        Forge LOAD DATA INFILE query which will be used in SHOW PROCESS LIST
        and written to slave's binlog if binlogging is on.
3619
      */
3620
      if (!(load_data_query= (char *)thd->alloc(get_query_buffer_length() + 1)))
3621
      {
3622 3623 3624 3625 3626
        /*
          This will set thd->fatal_error in case of OOM. So we surely will notice
          that something is wrong.
        */
        goto error;
3627
      }
3628 3629 3630 3631 3632 3633 3634

      print_query(FALSE, load_data_query, &end, (char **)&thd->lex->fname_start,
                  (char **)&thd->lex->fname_end);
      *end= 0;
      thd->query_length= end - load_data_query;
      thd->query= load_data_query;

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3635
      if (sql_ex.opt_flags & REPLACE_FLAG)
3636
      {
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3637
	handle_dup= DUP_REPLACE;
3638
      }
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3639
      else if (sql_ex.opt_flags & IGNORE_FLAG)
3640 3641 3642 3643
      {
        ignore= 1;
        handle_dup= DUP_ERROR;
      }
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3644
      else
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3645
      {
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3646
        /*
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3647
	  When replication is running fine, if it was DUP_ERROR on the
3648
          master then we could choose IGNORE here, because if DUP_ERROR
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3649
          suceeded on master, and data is identical on the master and slave,
3650
          then there should be no uniqueness errors on slave, so IGNORE is
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3651
          the same as DUP_ERROR. But in the unlikely case of uniqueness errors
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3652 3653 3654
          (because the data on the master and slave happen to be different
	  (user error or bug), we want LOAD DATA to print an error message on
	  the slave to discover the problem.
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3655 3656

          If reading from net (a 3.23 master), mysql_load() will change this
3657
          to IGNORE.
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3658 3659
        */
        handle_dup= DUP_ERROR;
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3660
      }
3661 3662 3663 3664 3665 3666 3667 3668 3669 3670
      /*
        We need to set thd->lex->sql_command and thd->lex->duplicates
        since InnoDB tests these variables to decide if this is a LOAD
        DATA ... REPLACE INTO ... statement even though mysql_parse()
        is not called.  This is not needed in 5.0 since there the LOAD
        DATA ... statement is replicated using mysql_parse(), which
        sets the thd->lex fields correctly.
      */
      thd->lex->sql_command= SQLCOM_LOAD;
      thd->lex->duplicates= handle_dup;
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3671

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3672
      sql_exchange ex((char*)fname, sql_ex.opt_flags & DUMPFILE_FLAG);
3673 3674 3675 3676 3677
      String field_term(sql_ex.field_term,sql_ex.field_term_len,log_cs);
      String enclosed(sql_ex.enclosed,sql_ex.enclosed_len,log_cs);
      String line_term(sql_ex.line_term,sql_ex.line_term_len,log_cs);
      String line_start(sql_ex.line_start,sql_ex.line_start_len,log_cs);
      String escaped(sql_ex.escaped,sql_ex.escaped_len, log_cs);
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3678 3679 3680 3681 3682
      ex.field_term= &field_term;
      ex.enclosed= &enclosed;
      ex.line_term= &line_term;
      ex.line_start= &line_start;
      ex.escaped= &escaped;
3683 3684 3685 3686 3687 3688

      ex.opt_enclosed = (sql_ex.opt_flags & OPT_ENCLOSED_FLAG);
      if (sql_ex.empty_flags & FIELD_TERM_EMPTY)
	ex.field_term->length(0);

      ex.skip_lines = skip_lines;
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
3689
      List<Item> field_list;
3690 3691
      thd->lex->select_lex.context.resolve_in_table_list_only(&tables);
      set_fields(tables.db, field_list, &thd->lex->select_lex.context);
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
3692
      thd->variables.pseudo_thread_id= thread_id;
3693 3694 3695 3696 3697 3698 3699 3700 3701
      if (net)
      {
	// mysql_load will use thd->net to read the file
	thd->net.vio = net->vio;
	/*
	  Make sure the client does not get confused about the packet sequence
	*/
	thd->net.pkt_nr = net->pkt_nr;
      }
3702
      /*
3703
        It is safe to use tmp_list twice because we are not going to
3704 3705
        update it inside mysql_load().
      */
3706 3707
      List<Item> tmp_list;
      if (mysql_load(thd, &ex, &tables, field_list, tmp_list, tmp_list,
3708
                     handle_dup, ignore, net != 0))
3709
        thd->is_slave_error= 1;
3710
      if (thd->cuted_fields)
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
3711
      {
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
3712
	/* log_pos is the position of the LOAD event in the master log */
lars@mysql.com's avatar
lars@mysql.com committed
3713 3714 3715 3716 3717 3718 3719
        sql_print_warning("Slave: load data infile on table '%s' at "
                          "log position %s in log '%s' produced %ld "
                          "warning(s). Default database: '%s'",
                          (char*) table_name,
                          llstr(log_pos,llbuff), RPL_LOG_NAME, 
                          (ulong) thd->cuted_fields,
                          print_slave_db_safe(thd->db));
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3720
      }
3721 3722 3723
      if (net)
        net->pkt_nr= thd->net.pkt_nr;
    }
3724 3725
  }
  else
3726 3727 3728 3729 3730 3731 3732 3733 3734
  {
    /*
      We will just ask the master to send us /dev/null if we do not
      want to load the data.
      TODO: this a bug - needs to be done in I/O thread
    */
    if (net)
      skip_load_data_infile(net);
  }
3735 3736

error:
3737
  thd->net.vio = 0; 
3738
  const char *remember_db= thd->db;
3739
  VOID(pthread_mutex_lock(&LOCK_thread_count));
3740
  thd->catalog= 0;
3741
  thd->set_db(NULL, 0);                   /* will free the current database */
3742
  thd->query= 0;
3743
  thd->query_length= 0;
3744
  VOID(pthread_mutex_unlock(&LOCK_thread_count));
3745
  close_thread_tables(thd);
3746 3747

  DBUG_EXECUTE_IF("LOAD_DATA_INFILE_has_fatal_error",
3748
                  thd->is_slave_error= 0; thd->is_fatal_error= 1;);
3749

3750
  if (thd->is_slave_error)
3751
  {
3752
    /* this err/sql_errno code is copy-paste from net_send_error() */
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3753 3754 3755 3756 3757 3758 3759 3760 3761
    const char *err;
    int sql_errno;
    if ((err=thd->net.last_error)[0])
      sql_errno=thd->net.last_errno;
    else
    {
      sql_errno=ER_UNKNOWN_ERROR;
      err=ER(sql_errno);       
    }
3762
    rli->report(ERROR_LEVEL, sql_errno,"\
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3763
Error '%s' running LOAD DATA INFILE on table '%s'. Default database: '%s'",
3764
                    err, (char*)table_name, print_slave_db_safe(remember_db));
3765
    free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
3766 3767
    return 1;
  }
3768
  free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
3769

3770
  if (thd->is_fatal_error)
3771
  {
3772 3773 3774 3775 3776 3777 3778 3779 3780
    char buf[256];
    my_snprintf(buf, sizeof(buf),
                "Running LOAD DATA INFILE on table '%-.64s'."
                " Default database: '%-.64s'",
                (char*)table_name,
                print_slave_db_safe(remember_db));

    rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR,
                ER(ER_SLAVE_FATAL_ERROR), buf);
3781 3782 3783
    return 1;
  }

3784
  return ( use_rli_only_for_errors ? 0 : Log_event::do_apply_event(rli) ); 
3785
}
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3786
#endif
3787 3788


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3789
/**************************************************************************
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3790
  Rotate_log_event methods
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3791
**************************************************************************/
3792

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3793
/*
3794
  Rotate_log_event::pack_info()
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3795
*/
3796

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3797
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
3798
void Rotate_log_event::pack_info(Protocol *protocol)
3799
{
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3800
  char buf1[256], buf[22];
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3801
  String tmp(buf1, sizeof(buf1), log_cs);
3802
  tmp.length(0);
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3803
  tmp.append(new_log_ident, ident_len);
3804
  tmp.append(STRING_WITH_LEN(";pos="));
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3805 3806
  tmp.append(llstr(pos,buf));
  protocol->store(tmp.ptr(), tmp.length(), &my_charset_bin);
3807
}
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3808
#endif
3809

3810

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3811
/*
3812
  Rotate_log_event::print()
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3813
*/
3814 3815

#ifdef MYSQL_CLIENT
3816
void Rotate_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
3817
{
3818
  char buf[22];
3819 3820
  Write_on_release_cache cache(&print_event_info->head_cache, file,
                               Write_on_release_cache::FLUSH_F);
3821

3822
  if (print_event_info->short_form)
3823
    return;
3824 3825
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\tRotate to ");
3826
  if (new_log_ident)
3827
    my_b_write(&cache, (uchar*) new_log_ident, (uint)ident_len);
3828
  my_b_printf(&cache, "  pos: %s\n", llstr(pos, buf));
3829
}
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3830
#endif /* MYSQL_CLIENT */
3831 3832


3833

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monty@narttu.mysql.fi committed
3834
/*
3835
  Rotate_log_event::Rotate_log_event() (2 constructors)
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monty@narttu.mysql.fi committed
3836
*/
3837

3838 3839

#ifndef MYSQL_CLIENT
3840
Rotate_log_event::Rotate_log_event(const char* new_log_ident_arg,
3841 3842 3843 3844 3845 3846 3847 3848
                                   uint ident_len_arg, ulonglong pos_arg,
                                   uint flags_arg)
  :Log_event(), new_log_ident(new_log_ident_arg),
   pos(pos_arg),ident_len(ident_len_arg ? ident_len_arg :
                          (uint) strlen(new_log_ident_arg)), flags(flags_arg)
{
#ifndef DBUG_OFF
  char buff[22];
3849
  DBUG_ENTER("Rotate_log_event::Rotate_log_event(...,flags)");
3850 3851
  DBUG_PRINT("enter",("new_log_ident: %s  pos: %s  flags: %lu", new_log_ident_arg,
                      llstr(pos_arg, buff), (ulong) flags));
3852 3853
#endif
  if (flags & DUP_NAME)
3854
    new_log_ident= my_strndup(new_log_ident_arg, ident_len, MYF(MY_WME));
3855 3856 3857 3858 3859
  DBUG_VOID_RETURN;
}
#endif


3860 3861
Rotate_log_event::Rotate_log_event(const char* buf, uint event_len,
                                   const Format_description_log_event* description_event)
3862
  :Log_event(buf, description_event) ,new_log_ident(0), flags(DUP_NAME)
3863
{
3864
  DBUG_ENTER("Rotate_log_event::Rotate_log_event(char*,...)");
3865
  // The caller will ensure that event_len is what we have at EVENT_LEN_OFFSET
3866 3867
  uint8 header_size= description_event->common_header_len;
  uint8 post_header_len= description_event->post_header_len[ROTATE_EVENT-1];
3868 3869
  uint ident_offset;
  if (event_len < header_size)
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3870
    DBUG_VOID_RETURN;
3871
  buf += header_size;
3872 3873 3874 3875
  pos = post_header_len ? uint8korr(buf + R_POS_OFFSET) : 4;
  ident_len = (uint)(event_len -
                     (header_size+post_header_len)); 
  ident_offset = post_header_len; 
3876
  set_if_smaller(ident_len,FN_REFLEN-1);
3877
  new_log_ident= my_strndup(buf + ident_offset, (uint) ident_len, MYF(MY_WME));
3878
  DBUG_PRINT("debug", ("new_log_ident: '%s'", new_log_ident));
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monty@mysql.com committed
3879
  DBUG_VOID_RETURN;
3880
}
3881 3882


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3883
/*
3884
  Rotate_log_event::write()
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3885
*/
3886

3887
#ifndef MYSQL_CLIENT
3888
bool Rotate_log_event::write(IO_CACHE* file)
3889
{
3890
  char buf[ROTATE_HEADER_LEN];
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3891
  int8store(buf + R_POS_OFFSET, pos);
3892
  return (write_header(file, ROTATE_HEADER_LEN + ident_len) ||
3893 3894
          my_b_safe_write(file, (uchar*)buf, ROTATE_HEADER_LEN) ||
          my_b_safe_write(file, (uchar*)new_log_ident, (uint) ident_len));
3895
}
3896
#endif
3897

3898

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monty@narttu.mysql.fi committed
3899
/*
3900
  Rotate_log_event::do_apply_event()
3901

3902
  Got a rotate log event from the master
3903

3904 3905 3906
  IMPLEMENTATION
    This is mainly used so that we can later figure out the logname and
    position for the master.
3907

3908
    We can't rotate the slave's BINlog as this will cause infinitive rotations
3909
    in a A -> B -> A setup.
3910
    The NOTES below is a wrong comment which will disappear when 4.1 is merged.
3911 3912 3913

  RETURN VALUES
    0	ok
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3914
*/
3915

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3916
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
3917
int Rotate_log_event::do_update_pos(Relay_log_info *rli)
3918
{
3919
  DBUG_ENTER("Rotate_log_event::do_update_pos");
3920 3921 3922 3923
#ifndef DBUG_OFF
  char buf[32];
#endif

3924 3925
  DBUG_PRINT("info", ("server_id=%lu; ::server_id=%lu",
                      (ulong) this->server_id, (ulong) ::server_id));
3926 3927
  DBUG_PRINT("info", ("new_log_ident: %s", this->new_log_ident));
  DBUG_PRINT("info", ("pos: %s", llstr(this->pos, buf)));
3928 3929

  pthread_mutex_lock(&rli->data_lock);
3930
  rli->event_relay_log_pos= my_b_tell(rli->cur_log);
guilhem@gbichot2's avatar
guilhem@gbichot2 committed
3931
  /*
3932 3933 3934 3935
    If we are in a transaction or in a group: the only normal case is
    when the I/O thread was copying a big transaction, then it was
    stopped and restarted: we have this in the relay log:

guilhem@gbichot2's avatar
guilhem@gbichot2 committed
3936 3937 3938 3939 3940
    BEGIN
    ...
    ROTATE (a fake one)
    ...
    COMMIT or ROLLBACK
3941 3942 3943 3944

    In that case, we don't want to touch the coordinates which
    correspond to the beginning of the transaction.  Starting from
    5.0.0, there also are some rotates from the slave itself, in the
3945
    relay log, which shall not change the group positions.
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guilhem@gbichot2 committed
3946
  */
3947
  if ((server_id != ::server_id || rli->replicate_same_server_id) &&
3948
      !rli->is_in_group())
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monty@narttu.mysql.fi committed
3949
  {
3950 3951 3952 3953
    DBUG_PRINT("info", ("old group_master_log_name: '%s'  "
                        "old group_master_log_pos: %lu",
                        rli->group_master_log_name,
                        (ulong) rli->group_master_log_pos));
3954 3955
    memcpy(rli->group_master_log_name, new_log_ident, ident_len+1);
    rli->notify_group_master_log_name_update();
3956
    rli->group_master_log_pos= pos;
3957 3958 3959
    strmake(rli->group_relay_log_name, rli->event_relay_log_name,
            sizeof(rli->group_relay_log_name) - 1);
    rli->notify_group_relay_log_name_update();
3960
    rli->group_relay_log_pos= rli->event_relay_log_pos;
3961 3962
    DBUG_PRINT("info", ("new group_master_log_name: '%s'  "
                        "new group_master_log_pos: %lu",
3963
                        rli->group_master_log_name,
3964
                        (ulong) rli->group_master_log_pos));
3965
    /*
3966 3967
      Reset thd->options and sql_mode etc, because this could be the signal of
      a master's downgrade from 5.0 to 4.0.
3968 3969 3970 3971 3972
      However, no need to reset description_event_for_exec: indeed, if the next
      master is 5.0 (even 5.0.1) we will soon get a Format_desc; if the next
      master is 4.0 then the events are in the slave's format (conversion).
    */
    set_slave_thread_options(thd);
3973
    set_slave_thread_default_charset(thd, rli);
3974
    thd->variables.sql_mode= global_system_variables.sql_mode;
3975 3976
    thd->variables.auto_increment_increment=
      thd->variables.auto_increment_offset= 1;
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3977
  }
3978 3979 3980
  pthread_mutex_unlock(&rli->data_lock);
  pthread_cond_broadcast(&rli->data_cond);
  flush_relay_log_info(rli);
3981

3982
  DBUG_RETURN(0);
3983
}
3984

3985 3986

Log_event::enum_skip_reason
3987
Rotate_log_event::do_shall_skip(Relay_log_info *rli)
3988
{
3989
  enum_skip_reason reason= Log_event::do_shall_skip(rli);
3990 3991

  switch (reason) {
3992
  case Log_event::EVENT_SKIP_NOT:
3993
  case Log_event::EVENT_SKIP_COUNT:
3994
    return Log_event::EVENT_SKIP_NOT;
3995

3996 3997
  case Log_event::EVENT_SKIP_IGNORE:
    return Log_event::EVENT_SKIP_IGNORE;
3998 3999
  }
  DBUG_ASSERT(0);
4000
  return Log_event::EVENT_SKIP_NOT;             // To keep compiler happy
4001 4002
}

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4003
#endif
4004 4005


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4006
/**************************************************************************
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4007
	Intvar_log_event methods
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4008
**************************************************************************/
4009

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4010
/*
4011
  Intvar_log_event::pack_info()
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4012
*/
4013

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4014
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4015
void Intvar_log_event::pack_info(Protocol *protocol)
4016
{
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4017 4018
  char buf[256], *pos;
  pos= strmake(buf, get_var_type_name(), sizeof(buf)-23);
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4019
  *pos++= '=';
4020
  pos= longlong10_to_str(val, pos, -10);
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4021
  protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
4022
}
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4023
#endif
4024

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4025

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monty@narttu.mysql.fi committed
4026
/*
4027
  Intvar_log_event::Intvar_log_event()
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4028
*/
4029

4030 4031 4032
Intvar_log_event::Intvar_log_event(const char* buf,
                                   const Format_description_log_event* description_event)
  :Log_event(buf, description_event)
4033
{
4034 4035 4036
  buf+= description_event->common_header_len;
  type= buf[I_TYPE_OFFSET];
  val= uint8korr(buf+I_VAL_OFFSET);
4037 4038
}

4039

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monty@narttu.mysql.fi committed
4040
/*
4041
  Intvar_log_event::get_var_type_name()
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monty@narttu.mysql.fi committed
4042
*/
4043 4044

const char* Intvar_log_event::get_var_type_name()
4045
{
4046 4047 4048 4049 4050
  switch(type) {
  case LAST_INSERT_ID_EVENT: return "LAST_INSERT_ID";
  case INSERT_ID_EVENT: return "INSERT_ID";
  default: /* impossible */ return "UNKNOWN";
  }
4051 4052
}

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4053

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4054
/*
4055
  Intvar_log_event::write()
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monty@narttu.mysql.fi committed
4056
*/
4057

4058
#ifndef MYSQL_CLIENT
4059
bool Intvar_log_event::write(IO_CACHE* file)
4060
{
4061 4062
  uchar buf[9];
  buf[I_TYPE_OFFSET]= (uchar) type;
4063
  int8store(buf + I_VAL_OFFSET, val);
4064 4065
  return (write_header(file, sizeof(buf)) ||
          my_b_safe_write(file, buf, sizeof(buf)));
4066
}
4067
#endif
4068

4069

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4070
/*
4071
  Intvar_log_event::print()
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4072
*/
4073 4074

#ifdef MYSQL_CLIENT
4075
void Intvar_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
4076
{
4077 4078 4079
  char llbuff[22];
  const char *msg;
  LINT_INIT(msg);
4080 4081
  Write_on_release_cache cache(&print_event_info->head_cache, file,
                               Write_on_release_cache::FLUSH_F);
4082

4083
  if (!print_event_info->short_form)
4084
  {
4085 4086
    print_header(&cache, print_event_info, FALSE);
    my_b_printf(&cache, "\tIntvar\n");
4087
  }
4088

4089
  my_b_printf(&cache, "SET ");
4090 4091 4092 4093 4094 4095 4096
  switch (type) {
  case LAST_INSERT_ID_EVENT:
    msg="LAST_INSERT_ID";
    break;
  case INSERT_ID_EVENT:
    msg="INSERT_ID";
    break;
4097 4098 4099 4100
  case INVALID_INT_EVENT:
  default: // cannot happen
    msg="INVALID_INT";
    break;
4101
  }
4102 4103
  my_b_printf(&cache, "%s=%s%s\n",
              msg, llstr(val,llbuff), print_event_info->delimiter);
4104
}
4105
#endif
4106

4107

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monty@narttu.mysql.fi committed
4108
/*
4109
  Intvar_log_event::do_apply_event()
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4110
*/
4111

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4112
#if defined(HAVE_REPLICATION)&& !defined(MYSQL_CLIENT)
4113
int Intvar_log_event::do_apply_event(Relay_log_info const *rli)
4114
{
4115 4116 4117 4118
  /*
    We are now in a statement until the associated query log event has
    been processed.
   */
4119
  const_cast<Relay_log_info*>(rli)->set_flag(Relay_log_info::IN_STMT);
4120

4121 4122
  switch (type) {
  case LAST_INSERT_ID_EVENT:
4123 4124
    thd->stmt_depends_on_first_successful_insert_id_in_prev_stmt= 1;
    thd->first_successful_insert_id_in_prev_stmt= val;
4125 4126
    break;
  case INSERT_ID_EVENT:
4127
    thd->force_one_auto_inc_interval(val);
4128 4129
    break;
  }
4130 4131 4132
  return 0;
}

4133
int Intvar_log_event::do_update_pos(Relay_log_info *rli)
4134
{
4135
  rli->inc_event_relay_log_pos();
4136
  return 0;
4137
}
4138 4139 4140


Log_event::enum_skip_reason
4141
Intvar_log_event::do_shall_skip(Relay_log_info *rli)
4142 4143
{
  /*
4144 4145 4146 4147 4148 4149
    It is a common error to set the slave skip counter to 1 instead of
    2 when recovering from an insert which used a auto increment,
    rand, or user var.  Therefore, if the slave skip counter is 1, we
    just say that this event should be skipped by ignoring it, meaning
    that we do not change the value of the slave skip counter since it
    will be decreased by the following insert event.
4150
  */
4151
  return continue_group(rli);
4152 4153
}

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4154
#endif
4155

4156

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4157
/**************************************************************************
4158
  Rand_log_event methods
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4159
**************************************************************************/
4160

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4161
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4162
void Rand_log_event::pack_info(Protocol *protocol)
4163
{
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4164 4165 4166 4167 4168
  char buf1[256], *pos;
  pos= strmov(buf1,"rand_seed1=");
  pos= int10_to_str((long) seed1, pos, 10);
  pos= strmov(pos, ",rand_seed2=");
  pos= int10_to_str((long) seed2, pos, 10);
4169
  protocol->store(buf1, (uint) (pos-buf1), &my_charset_bin);
4170
}
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4171
#endif
4172 4173


4174 4175 4176
Rand_log_event::Rand_log_event(const char* buf,
                               const Format_description_log_event* description_event)
  :Log_event(buf, description_event)
4177
{
4178 4179 4180
  buf+= description_event->common_header_len;
  seed1= uint8korr(buf+RAND_SEED1_OFFSET);
  seed2= uint8korr(buf+RAND_SEED2_OFFSET);
4181 4182
}

4183

4184
#ifndef MYSQL_CLIENT
4185
bool Rand_log_event::write(IO_CACHE* file)
4186
{
4187
  uchar buf[16];
4188 4189
  int8store(buf + RAND_SEED1_OFFSET, seed1);
  int8store(buf + RAND_SEED2_OFFSET, seed2);
4190 4191
  return (write_header(file, sizeof(buf)) ||
          my_b_safe_write(file, buf, sizeof(buf)));
4192
}
4193
#endif
4194

4195 4196

#ifdef MYSQL_CLIENT
4197
void Rand_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
4198
{
4199 4200 4201
  Write_on_release_cache cache(&print_event_info->head_cache, file,
                               Write_on_release_cache::FLUSH_F);

4202
  char llbuff[22],llbuff2[22];
4203
  if (!print_event_info->short_form)
4204
  {
4205 4206
    print_header(&cache, print_event_info, FALSE);
    my_b_printf(&cache, "\tRand\n");
4207
  }
4208 4209 4210
  my_b_printf(&cache, "SET @@RAND_SEED1=%s, @@RAND_SEED2=%s%s\n",
              llstr(seed1, llbuff),llstr(seed2, llbuff2),
              print_event_info->delimiter);
4211
}
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4212
#endif /* MYSQL_CLIENT */
4213

4214

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4215
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4216
int Rand_log_event::do_apply_event(Relay_log_info const *rli)
4217
{
4218 4219 4220 4221
  /*
    We are now in a statement until the associated query log event has
    been processed.
   */
4222
  const_cast<Relay_log_info*>(rli)->set_flag(Relay_log_info::IN_STMT);
4223

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4224 4225
  thd->rand.seed1= (ulong) seed1;
  thd->rand.seed2= (ulong) seed2;
4226 4227 4228
  return 0;
}

4229
int Rand_log_event::do_update_pos(Relay_log_info *rli)
4230
{
4231
  rli->inc_event_relay_log_pos();
4232 4233
  return 0;
}
4234

4235 4236

Log_event::enum_skip_reason
4237
Rand_log_event::do_shall_skip(Relay_log_info *rli)
4238 4239
{
  /*
4240 4241 4242 4243 4244 4245
    It is a common error to set the slave skip counter to 1 instead of
    2 when recovering from an insert which used a auto increment,
    rand, or user var.  Therefore, if the slave skip counter is 1, we
    just say that this event should be skipped by ignoring it, meaning
    that we do not change the value of the slave skip counter since it
    will be decreased by the following insert event.
4246
  */
4247
  return continue_group(rli);
4248 4249
}

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4250
#endif /* !MYSQL_CLIENT */
4251

4252

4253 4254 4255 4256 4257 4258 4259
/**************************************************************************
  Xid_log_event methods
**************************************************************************/

#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
void Xid_log_event::pack_info(Protocol *protocol)
{
4260 4261
  char buf[128], *pos;
  pos= strmov(buf, "COMMIT /* xid=");
4262
  pos= longlong10_to_str(xid, pos, 10);
4263
  pos= strmov(pos, " */");
4264 4265 4266 4267
  protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
}
#endif

4268 4269 4270 4271 4272 4273 4274 4275
/*
  NOTE it's ok not to use int8store here,
  as long as xid_t::set(ulonglong) and
  xid_t::get_my_xid doesn't do it either

  we don't care about actual values of xids as long as
  identical numbers compare identically
*/
4276 4277 4278 4279

Xid_log_event::
Xid_log_event(const char* buf,
              const Format_description_log_event *description_event)
4280 4281 4282
  :Log_event(buf, description_event)
{
  buf+= description_event->common_header_len;
4283
  memcpy((char*) &xid, buf, sizeof(xid));
4284 4285 4286
}


4287
#ifndef MYSQL_CLIENT
4288 4289 4290
bool Xid_log_event::write(IO_CACHE* file)
{
  return write_header(file, sizeof(xid)) ||
4291
         my_b_safe_write(file, (uchar*) &xid, sizeof(xid));
4292
}
4293
#endif
4294 4295 4296


#ifdef MYSQL_CLIENT
4297
void Xid_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
4298
{
4299 4300 4301
  Write_on_release_cache cache(&print_event_info->head_cache, file,
                               Write_on_release_cache::FLUSH_F);

4302
  if (!print_event_info->short_form)
4303
  {
4304 4305 4306
    char buf[64];
    longlong10_to_str(xid, buf, 10);

4307 4308
    print_header(&cache, print_event_info, FALSE);
    my_b_printf(&cache, "\tXid = %s\n", buf);
4309
  }
4310
  my_b_printf(&cache, "COMMIT%s\n", print_event_info->delimiter);
4311 4312 4313 4314 4315
}
#endif /* MYSQL_CLIENT */


#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4316
int Xid_log_event::do_apply_event(Relay_log_info const *rli)
4317
{
4318
  /* For a slave Xid_log_event is COMMIT */
4319 4320
  general_log_print(thd, COM_QUERY,
                    "COMMIT /* implicit, from Xid_log_event */");
4321
  return end_trans(thd, COMMIT);
4322
}
4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333

Log_event::enum_skip_reason
Xid_log_event::do_shall_skip(Relay_log_info *rli)
{
  DBUG_ENTER("Xid_log_event::do_shall_skip");
  if (rli->slave_skip_counter > 0) {
    thd->options&= ~OPTION_BEGIN;
    DBUG_RETURN(Log_event::EVENT_SKIP_COUNT);
  }
  DBUG_RETURN(Log_event::do_shall_skip(rli));
}
4334 4335 4336
#endif /* !MYSQL_CLIENT */


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4337
/**************************************************************************
4338
  User_var_log_event methods
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4339
**************************************************************************/
4340

4341
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4342 4343 4344
void User_var_log_event::pack_info(Protocol* protocol)
{
  char *buf= 0;
4345
  uint val_offset= 4 + name_len;
4346 4347 4348 4349
  uint event_len= val_offset;

  if (is_null)
  {
4350 4351
    if (!(buf= (char*) my_malloc(val_offset + 5, MYF(MY_WME))))
      return;
4352 4353 4354 4355 4356 4357 4358 4359 4360
    strmov(buf + val_offset, "NULL");
    event_len= val_offset + 4;
  }
  else
  {
    switch (type) {
    case REAL_RESULT:
      double real_val;
      float8get(real_val, val);
4361 4362 4363
      if (!(buf= (char*) my_malloc(val_offset + FLOATING_POINT_BUFFER,
                                   MYF(MY_WME))))
        return;
4364 4365
      event_len+= my_sprintf(buf + val_offset,
			     (buf + val_offset, "%.14g", real_val));
4366 4367
      break;
    case INT_RESULT:
4368 4369
      if (!(buf= (char*) my_malloc(val_offset + 22, MYF(MY_WME))))
        return;
4370 4371
      event_len= longlong10_to_str(uint8korr(val), buf + val_offset,-10)-buf;
      break;
4372 4373
    case DECIMAL_RESULT:
    {
4374 4375 4376
      if (!(buf= (char*) my_malloc(val_offset + DECIMAL_MAX_STR_LENGTH,
                                   MYF(MY_WME))))
        return;
4377 4378
      String str(buf+val_offset, DECIMAL_MAX_STR_LENGTH, &my_charset_bin);
      my_decimal dec;
4379 4380
      binary2my_decimal(E_DEC_FATAL_ERROR, (uchar*) (val+2), &dec, val[0],
                        val[1]);
4381 4382 4383 4384
      my_decimal2string(E_DEC_FATAL_ERROR, &dec, 0, 0, 0, &str);
      event_len= str.length() + val_offset;
      break;
    } 
4385
    case STRING_RESULT:
4386
      /* 15 is for 'COLLATE' and other chars */
4387 4388
      buf= (char*) my_malloc(event_len+val_len*2+1+2*MY_CS_NAME_SIZE+15,
                             MYF(MY_WME));
4389
      CHARSET_INFO *cs;
4390 4391
      if (!buf)
        return;
4392 4393 4394 4395 4396 4397 4398
      if (!(cs= get_charset(charset_number, MYF(0))))
      {
        strmov(buf+val_offset, "???");
        event_len+= 3;
      }
      else
      {
4399 4400 4401
        char *p= strxmov(buf + val_offset, "_", cs->csname, " ", NullS);
        p= str_to_hex(p, val, val_len);
        p= strxmov(p, " COLLATE ", cs->name, NullS);
4402 4403
        event_len= p-buf;
      }
4404
      break;
4405
    case ROW_RESULT:
4406
    default:
4407 4408 4409 4410 4411
      DBUG_ASSERT(1);
      return;
    }
  }
  buf[0]= '@';
4412
  buf[1]= '`';
4413
  memcpy(buf+2, name, name_len);
4414 4415
  buf[2+name_len]= '`';
  buf[3+name_len]= '=';
4416
  protocol->store(buf, event_len, &my_charset_bin);
4417
  my_free(buf, MYF(0));
4418
}
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4419
#endif /* !MYSQL_CLIENT */
4420 4421


4422 4423 4424 4425
User_var_log_event::
User_var_log_event(const char* buf,
                   const Format_description_log_event* description_event)
  :Log_event(buf, description_event)
4426
{
4427
  buf+= description_event->common_header_len;
4428 4429
  name_len= uint4korr(buf);
  name= (char *) buf + UV_NAME_LEN_SIZE;
4430 4431
  buf+= UV_NAME_LEN_SIZE + name_len;
  is_null= (bool) *buf;
4432 4433 4434
  if (is_null)
  {
    type= STRING_RESULT;
4435
    charset_number= my_charset_bin.number;
4436 4437 4438 4439 4440
    val_len= 0;
    val= 0;  
  }
  else
  {
4441 4442 4443
    type= (Item_result) buf[UV_VAL_IS_NULL];
    charset_number= uint4korr(buf + UV_VAL_IS_NULL + UV_VAL_TYPE_SIZE);
    val_len= uint4korr(buf + UV_VAL_IS_NULL + UV_VAL_TYPE_SIZE + 
4444
		       UV_CHARSET_NUMBER_SIZE);
4445 4446
    val= (char *) (buf + UV_VAL_IS_NULL + UV_VAL_TYPE_SIZE +
		   UV_CHARSET_NUMBER_SIZE + UV_VAL_LEN_SIZE);
4447 4448 4449 4450
  }
}


4451
#ifndef MYSQL_CLIENT
4452
bool User_var_log_event::write(IO_CACHE* file)
4453 4454 4455 4456
{
  char buf[UV_NAME_LEN_SIZE];
  char buf1[UV_VAL_IS_NULL + UV_VAL_TYPE_SIZE + 
	    UV_CHARSET_NUMBER_SIZE + UV_VAL_LEN_SIZE];
4457
  uchar buf2[max(8, DECIMAL_MAX_FIELD_SIZE + 2)], *pos= buf2;
4458
  uint buf1_length;
4459
  ulong event_length;
4460

4461
  int4store(buf, name_len);
4462 4463 4464 4465
  
  if ((buf1[0]= is_null))
  {
    buf1_length= 1;
4466
    val_len= 0;                                 // Length of 'pos'
4467 4468
  }    
  else
4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479
  {
    buf1[1]= type;
    int4store(buf1 + 2, charset_number);

    switch (type) {
    case REAL_RESULT:
      float8store(buf2, *(double*) val);
      break;
    case INT_RESULT:
      int8store(buf2, *(longlong*) val);
      break;
4480 4481 4482 4483 4484 4485
    case DECIMAL_RESULT:
    {
      my_decimal *dec= (my_decimal *)val;
      dec->fix_buffer_pointer();
      buf2[0]= (char)(dec->intg + dec->frac);
      buf2[1]= (char)dec->frac;
4486
      decimal2bin((decimal_t*)val, buf2+2, buf2[0], buf2[1]);
4487 4488 4489
      val_len= decimal_bin_size(buf2[0], buf2[1]) + 2;
      break;
    }
4490
    case STRING_RESULT:
4491
      pos= (uchar*) val;
4492
      break;
4493
    case ROW_RESULT:
4494
    default:
4495 4496 4497
      DBUG_ASSERT(1);
      return 0;
    }
4498 4499
    int4store(buf1 + 2 + UV_CHARSET_NUMBER_SIZE, val_len);
    buf1_length= 10;
4500
  }
4501 4502 4503 4504 4505

  /* Length of the whole event */
  event_length= sizeof(buf)+ name_len + buf1_length + val_len;

  return (write_header(file, event_length) ||
4506 4507 4508 4509
          my_b_safe_write(file, (uchar*) buf, sizeof(buf))   ||
	  my_b_safe_write(file, (uchar*) name, name_len)     ||
	  my_b_safe_write(file, (uchar*) buf1, buf1_length) ||
	  my_b_safe_write(file, pos, val_len));
4510
}
4511
#endif
4512

4513

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4514
/*
4515
  User_var_log_event::print()
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4516
*/
4517 4518

#ifdef MYSQL_CLIENT
4519
void User_var_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
4520
{
4521 4522 4523
  Write_on_release_cache cache(&print_event_info->head_cache, file,
                               Write_on_release_cache::FLUSH_F);

4524
  if (!print_event_info->short_form)
4525
  {
4526 4527
    print_header(&cache, print_event_info, FALSE);
    my_b_printf(&cache, "\tUser_var\n");
4528 4529
  }

4530
  my_b_printf(&cache, "SET @`");
4531
  my_b_write(&cache, (uchar*) name, (uint) (name_len));
4532
  my_b_printf(&cache, "`");
4533 4534 4535

  if (is_null)
  {
4536
    my_b_printf(&cache, ":=NULL%s\n", print_event_info->delimiter);
4537 4538 4539 4540 4541 4542
  }
  else
  {
    switch (type) {
    case REAL_RESULT:
      double real_val;
4543
      char real_buf[FMT_G_BUFSIZE(14)];
4544
      float8get(real_val, val);
4545 4546
      my_sprintf(real_buf, (real_buf, "%.14g", real_val));
      my_b_printf(&cache, ":=%s%s\n", real_buf, print_event_info->delimiter);
4547 4548 4549 4550
      break;
    case INT_RESULT:
      char int_buf[22];
      longlong10_to_str(uint8korr(val), int_buf, -10);
4551
      my_b_printf(&cache, ":=%s%s\n", int_buf, print_event_info->delimiter);
4552
      break;
4553 4554 4555 4556 4557 4558
    case DECIMAL_RESULT:
    {
      char str_buf[200];
      int str_len= sizeof(str_buf) - 1;
      int precision= (int)val[0];
      int scale= (int)val[1];
4559 4560
      decimal_digit_t dec_buf[10];
      decimal_t dec;
4561 4562 4563
      dec.len= 10;
      dec.buf= dec_buf;

4564
      bin2decimal((uchar*) val+2, &dec, precision, scale);
4565 4566
      decimal2string(&dec, str_buf, &str_len, 0, 0, 0);
      str_buf[str_len]= 0;
4567
      my_b_printf(&cache, ":=%s%s\n", str_buf, print_event_info->delimiter);
4568 4569
      break;
    }
4570
    case STRING_RESULT:
4571
    {
4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585
      /*
        Let's express the string in hex. That's the most robust way. If we
        print it in character form instead, we need to escape it with
        character_set_client which we don't know (we will know it in 5.0, but
        in 4.1 we don't know it easily when we are printing
        User_var_log_event). Explanation why we would need to bother with
        character_set_client (quoting Bar):
        > Note, the parser doesn't switch to another unescaping mode after
        > it has met a character set introducer.
        > For example, if an SJIS client says something like:
        > SET @a= _ucs2 \0a\0b'
        > the string constant is still unescaped according to SJIS, not
        > according to UCS2.
      */
4586 4587 4588 4589
      char *hex_str;
      CHARSET_INFO *cs;

      if (!(hex_str= (char *)my_alloca(2*val_len+1+2))) // 2 hex digits / byte
4590
        break; // no error, as we are 'void'
4591
      str_to_hex(hex_str, val, val_len);
4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602
      /*
        For proper behaviour when mysqlbinlog|mysql, we need to explicitely
        specify the variable's collation. It will however cause problems when
        people want to mysqlbinlog|mysql into another server not supporting the
        character set. But there's not much to do about this and it's unlikely.
      */
      if (!(cs= get_charset(charset_number, MYF(0))))
        /*
          Generate an unusable command (=> syntax error) is probably the best
          thing we can do here.
        */
4603
        my_b_printf(&cache, ":=???%s\n", print_event_info->delimiter);
4604
      else
4605 4606 4607
        my_b_printf(&cache, ":=_%s %s COLLATE `%s`%s\n",
                    cs->csname, hex_str, cs->name,
                    print_event_info->delimiter);
4608
      my_afree(hex_str);
4609
    }
4610
      break;
4611
    case ROW_RESULT:
4612
    default:
4613
      DBUG_ASSERT(1);
4614 4615 4616 4617
      return;
    }
  }
}
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4618
#endif
4619

4620

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monty@narttu.mysql.fi committed
4621
/*
4622
  User_var_log_event::do_apply_event()
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4623
*/
4624

4625
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
4626
int User_var_log_event::do_apply_event(Relay_log_info const *rli)
4627 4628
{
  Item *it= 0;
4629 4630 4631
  CHARSET_INFO *charset;
  if (!(charset= get_charset(charset_number, MYF(MY_WME))))
    return 1;
4632 4633 4634
  LEX_STRING user_var_name;
  user_var_name.str= name;
  user_var_name.length= name_len;
4635 4636
  double real_val;
  longlong int_val;
4637

4638 4639 4640 4641
  /*
    We are now in a statement until the associated query log event has
    been processed.
   */
4642
  const_cast<Relay_log_info*>(rli)->set_flag(Relay_log_info::IN_STMT);
4643

4644 4645 4646 4647 4648 4649 4650 4651 4652
  if (is_null)
  {
    it= new Item_null();
  }
  else
  {
    switch (type) {
    case REAL_RESULT:
      float8get(real_val, val);
4653
      it= new Item_float(real_val, 0);
4654
      val= (char*) &real_val;		// Pointer to value in native format
4655
      val_len= 8;
4656 4657
      break;
    case INT_RESULT:
4658 4659 4660
      int_val= (longlong) uint8korr(val);
      it= new Item_int(int_val);
      val= (char*) &int_val;		// Pointer to value in native format
4661
      val_len= 8;
4662
      break;
4663 4664
    case DECIMAL_RESULT:
    {
4665
      Item_decimal *dec= new Item_decimal((uchar*) val+2, val[0], val[1]);
4666 4667 4668 4669 4670
      it= dec;
      val= (char *)dec->val_decimal(NULL);
      val_len= sizeof(my_decimal);
      break;
    }
4671 4672 4673
    case STRING_RESULT:
      it= new Item_string(val, val_len, charset);
      break;
4674
    case ROW_RESULT:
4675
    default:
4676 4677 4678 4679 4680
      DBUG_ASSERT(1);
      return 0;
    }
  }
  Item_func_set_user_var e(user_var_name, it);
4681 4682 4683 4684
  /*
    Item_func_set_user_var can't substitute something else on its place =>
    0 can be passed as last argument (reference on item)
  */
4685
  e.fix_fields(thd, 0);
4686 4687 4688 4689 4690
  /*
    A variable can just be considered as a table with
    a single record and with a single column. Thus, like
    a column value, it could always have IMPLICIT derivation.
   */
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kaa@polly.local committed
4691
  e.update_hash(val, val_len, type, charset, DERIVATION_IMPLICIT, 0);
4692
  free_root(thd->mem_root,0);
4693

4694 4695 4696
  return 0;
}

4697
int User_var_log_event::do_update_pos(Relay_log_info *rli)
4698
{
4699
  rli->inc_event_relay_log_pos();
4700 4701
  return 0;
}
4702

4703
Log_event::enum_skip_reason
4704
User_var_log_event::do_shall_skip(Relay_log_info *rli)
4705 4706 4707 4708 4709 4710 4711 4712 4713
{
  /*
    It is a common error to set the slave skip counter to 1 instead
    of 2 when recovering from an insert which used a auto increment,
    rand, or user var.  Therefore, if the slave skip counter is 1, we
    just say that this event should be skipped by ignoring it, meaning
    that we do not change the value of the slave skip counter since it
    will be decreased by the following insert event.
  */
4714
  return continue_group(rli);
4715
}
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4716
#endif /* !MYSQL_CLIENT */
4717 4718


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4719
/**************************************************************************
4720
  Slave_log_event methods
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4721
**************************************************************************/
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4722

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4723
#ifdef HAVE_REPLICATION
4724
#ifdef MYSQL_CLIENT
4725
void Unknown_log_event::print(FILE* file_arg, PRINT_EVENT_INFO* print_event_info)
4726
{
4727 4728
  Write_on_release_cache cache(&print_event_info->head_cache, file_arg);

4729
  if (print_event_info->short_form)
4730
    return;
4731 4732
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\n# %s", "Unknown event\n");
4733 4734
}
#endif  
4735

4736
#ifndef MYSQL_CLIENT
4737
void Slave_log_event::pack_info(Protocol *protocol)
4738
{
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4739
  char buf[256+HOSTNAME_LENGTH], *pos;
4740 4741 4742 4743 4744 4745 4746
  pos= strmov(buf, "host=");
  pos= strnmov(pos, master_host, HOSTNAME_LENGTH);
  pos= strmov(pos, ",port=");
  pos= int10_to_str((long) master_port, pos, 10);
  pos= strmov(pos, ",log=");
  pos= strmov(pos, master_log);
  pos= strmov(pos, ",pos=");
4747
  pos= longlong10_to_str(master_pos, pos, 10);
4748
  protocol->store(buf, pos-buf, &my_charset_bin);
4749
}
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4750
#endif /* !MYSQL_CLIENT */
4751 4752 4753 4754


#ifndef MYSQL_CLIENT
Slave_log_event::Slave_log_event(THD* thd_arg,
4755
				 Relay_log_info* rli)
4756
  :Log_event(thd_arg, 0, 0) , mem_pool(0), master_host(0)
4757 4758 4759 4760
{
  DBUG_ENTER("Slave_log_event");
  if (!rli->inited)				// QQ When can this happen ?
    DBUG_VOID_RETURN;
4761

4762
  Master_info* mi = rli->mi;
4763 4764 4765 4766
  // TODO: re-write this better without holding both locks at the same time
  pthread_mutex_lock(&mi->data_lock);
  pthread_mutex_lock(&rli->data_lock);
  master_host_len = strlen(mi->host);
4767
  master_log_len = strlen(rli->group_master_log_name);
4768 4769 4770
  // on OOM, just do not initialize the structure and print the error
  if ((mem_pool = (char*)my_malloc(get_data_size() + 1,
				   MYF(MY_WME))))
4771
  {
4772 4773 4774
    master_host = mem_pool + SL_MASTER_HOST_OFFSET ;
    memcpy(master_host, mi->host, master_host_len + 1);
    master_log = master_host + master_host_len + 1;
4775
    memcpy(master_log, rli->group_master_log_name, master_log_len + 1);
4776
    master_port = mi->port;
4777
    master_pos = rli->group_master_log_pos;
4778
    DBUG_PRINT("info", ("master_log: %s  pos: %lu", master_log,
4779
			(ulong) master_pos));
4780
  }
4781 4782 4783 4784 4785 4786
  else
    sql_print_error("Out of memory while recording slave event");
  pthread_mutex_unlock(&rli->data_lock);
  pthread_mutex_unlock(&mi->data_lock);
  DBUG_VOID_RETURN;
}
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4787
#endif /* !MYSQL_CLIENT */
4788 4789 4790 4791 4792 4793 4794 4795 4796


Slave_log_event::~Slave_log_event()
{
  my_free(mem_pool, MYF(MY_ALLOW_ZERO_PTR));
}


#ifdef MYSQL_CLIENT
4797
void Slave_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
4798
{
4799 4800
  Write_on_release_cache cache(&print_event_info->head_cache, file);

4801
  char llbuff[22];
4802
  if (print_event_info->short_form)
4803
    return;
4804 4805
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\n\
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4806
Slave: master_host: '%s'  master_port: %d  master_log: '%s'  master_pos: %s\n",
4807 4808
	  master_host, master_port, master_log, llstr(master_pos, llbuff));
}
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4809
#endif /* MYSQL_CLIENT */
4810 4811 4812 4813 4814 4815 4816 4817


int Slave_log_event::get_data_size()
{
  return master_host_len + master_log_len + 1 + SL_MASTER_HOST_OFFSET;
}


4818
#ifndef MYSQL_CLIENT
4819
bool Slave_log_event::write(IO_CACHE* file)
4820
{
4821
  ulong event_length= get_data_size();
4822 4823 4824
  int8store(mem_pool + SL_MASTER_POS_OFFSET, master_pos);
  int2store(mem_pool + SL_MASTER_PORT_OFFSET, master_port);
  // log and host are already there
4825 4826

  return (write_header(file, event_length) ||
4827
          my_b_safe_write(file, (uchar*) mem_pool, event_length));
4828
}
4829
#endif
4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840


void Slave_log_event::init_from_mem_pool(int data_size)
{
  master_pos = uint8korr(mem_pool + SL_MASTER_POS_OFFSET);
  master_port = uint2korr(mem_pool + SL_MASTER_PORT_OFFSET);
  master_host = mem_pool + SL_MASTER_HOST_OFFSET;
  master_host_len = strlen(master_host);
  // safety
  master_log = master_host + master_host_len + 1;
  if (master_log > mem_pool + data_size)
4841
  {
4842 4843
    master_host = 0;
    return;
4844
  }
4845 4846
  master_log_len = strlen(master_log);
}
4847

4848

4849 4850 4851
/* This code is not used, so has not been updated to be format-tolerant */
Slave_log_event::Slave_log_event(const char* buf, uint event_len)
  :Log_event(buf,0) /*unused event*/ ,mem_pool(0),master_host(0)
4852
{
4853
  if (event_len < LOG_EVENT_HEADER_LEN)
4854
    return;
4855
  event_len -= LOG_EVENT_HEADER_LEN;
4856 4857 4858 4859 4860
  if (!(mem_pool = (char*) my_malloc(event_len + 1, MYF(MY_WME))))
    return;
  memcpy(mem_pool, buf + LOG_EVENT_HEADER_LEN, event_len);
  mem_pool[event_len] = 0;
  init_from_mem_pool(event_len);
4861 4862
}

4863

4864
#ifndef MYSQL_CLIENT
4865
int Slave_log_event::do_apply_event(Relay_log_info const *rli)
4866 4867 4868
{
  if (mysql_bin_log.is_open())
    mysql_bin_log.write(this);
4869
  return 0;
4870
}
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4871
#endif /* !MYSQL_CLIENT */
4872 4873


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4874
/**************************************************************************
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4875
	Stop_log_event methods
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4876
**************************************************************************/
4877

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4878
/*
4879
  Stop_log_event::print()
4880
*/
4881 4882

#ifdef MYSQL_CLIENT
4883
void Stop_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
4884
{
4885 4886 4887
  Write_on_release_cache cache(&print_event_info->head_cache, file,
                               Write_on_release_cache::FLUSH_F);

4888
  if (print_event_info->short_form)
4889 4890
    return;

4891 4892
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\tStop\n");
4893
}
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4894
#endif /* MYSQL_CLIENT */
4895

4896

4897
/*
4898
  Stop_log_event::do_apply_event()
4899 4900 4901 4902 4903 4904 4905 4906

  The master stopped.  We used to clean up all temporary tables but
  this is useless as, as the master has shut down properly, it has
  written all DROP TEMPORARY TABLE (prepared statements' deletion is
  TODO only when we binlog prep stmts).  We used to clean up
  slave_load_tmpdir, but this is useless as it has been cleared at the
  end of LOAD DATA INFILE.  So we have nothing to do here.  The place
  were we must do this cleaning is in
4907
  Start_log_event_v3::do_apply_event(), not here. Because if we come
4908
  here, the master was sane.
4909 4910
*/

4911
#ifndef MYSQL_CLIENT
4912
int Stop_log_event::do_update_pos(Relay_log_info *rli)
4913
{
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4914 4915
  /*
    We do not want to update master_log pos because we get a rotate event
4916
    before stop, so by now group_master_log_name is set to the next log.
4917
    If we updated it, we will have incorrect master coordinates and this
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4918
    could give false triggers in MASTER_POS_WAIT() that we have reached
4919
    the target position when in fact we have not.
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4920
  */
4921 4922 4923 4924 4925 4926 4927
  if (thd->options & OPTION_BEGIN)
    rli->inc_event_relay_log_pos();
  else
  {
    rli->inc_group_relay_log_pos(0);
    flush_relay_log_info(rli);
  }
4928 4929
  return 0;
}
4930

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4931
#endif /* !MYSQL_CLIENT */
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4932
#endif /* HAVE_REPLICATION */
4933

4934

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4935
/**************************************************************************
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4936
	Create_file_log_event methods
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4937
**************************************************************************/
4938 4939

/*
4940
  Create_file_log_event ctor
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4941
*/
4942 4943

#ifndef MYSQL_CLIENT
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4944 4945 4946 4947
Create_file_log_event::
Create_file_log_event(THD* thd_arg, sql_exchange* ex,
		      const char* db_arg, const char* table_name_arg,
		      List<Item>& fields_arg, enum enum_duplicates handle_dup,
4948
                      bool ignore,
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4949
		      char* block_arg, uint block_len_arg, bool using_trans)
4950
  :Load_log_event(thd_arg,ex,db_arg,table_name_arg,fields_arg,handle_dup, ignore,
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4951
		  using_trans),
4952
   fake_base(0), block(block_arg), event_buf(0), block_len(block_len_arg),
4953
   file_id(thd_arg->file_id = mysql_bin_log.next_file_id())
4954
{
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monty@mysql.com committed
4955
  DBUG_ENTER("Create_file_log_event");
4956
  sql_ex.force_new_format();
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monty@mysql.com committed
4957
  DBUG_VOID_RETURN;
4958
}
4959

4960

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monty@narttu.mysql.fi committed
4961
/*
4962
  Create_file_log_event::write_data_body()
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4963
*/
4964

4965
bool Create_file_log_event::write_data_body(IO_CACHE* file)
4966
{
4967 4968
  bool res;
  if ((res= Load_log_event::write_data_body(file)) || fake_base)
4969
    return res;
4970 4971
  return (my_b_safe_write(file, (uchar*) "", 1) ||
          my_b_safe_write(file, (uchar*) block, block_len));
4972 4973
}

4974

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4975
/*
4976
  Create_file_log_event::write_data_header()
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4977
*/
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4978

4979
bool Create_file_log_event::write_data_header(IO_CACHE* file)
4980
{
4981
  bool res;
4982
  uchar buf[CREATE_FILE_HEADER_LEN];
4983 4984
  if ((res= Load_log_event::write_data_header(file)) || fake_base)
    return res;
4985
  int4store(buf + CF_FILE_ID_OFFSET, file_id);
4986
  return my_b_safe_write(file, buf, CREATE_FILE_HEADER_LEN) != 0;
4987 4988 4989
}


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4990
/*
4991
  Create_file_log_event::write_base()
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monty@narttu.mysql.fi committed
4992
*/
4993

4994
bool Create_file_log_event::write_base(IO_CACHE* file)
4995
{
4996 4997 4998 4999
  bool res;
  fake_base= 1;                                 // pretend we are Load event
  res= write(file);
  fake_base= 0;
5000 5001 5002
  return res;
}

5003
#endif /* !MYSQL_CLIENT */
5004

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5005
/*
5006
  Create_file_log_event ctor
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5007
*/
5008

5009 5010 5011
Create_file_log_event::Create_file_log_event(const char* buf, uint len,
                                             const Format_description_log_event* description_event)
  :Load_log_event(buf,0,description_event),fake_base(0),block(0),inited_from_old(0)
5012
{
5013 5014 5015 5016 5017
  DBUG_ENTER("Create_file_log_event::Create_file_log_event(char*,...)");
  uint block_offset;
  uint header_len= description_event->common_header_len;
  uint8 load_header_len= description_event->post_header_len[LOAD_EVENT-1];
  uint8 create_file_header_len= description_event->post_header_len[CREATE_FILE_EVENT-1];
5018
  if (!(event_buf= (char*) my_memdup(buf, len, MYF(MY_WME))) ||
5019 5020 5021 5022 5023 5024 5025
      copy_log_event(event_buf,len,
                     ((buf[EVENT_TYPE_OFFSET] == LOAD_EVENT) ?
                      load_header_len + header_len :
                      (fake_base ? (header_len+load_header_len) :
                       (header_len+load_header_len) +
                       create_file_header_len)),
                     description_event))
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monty@mysql.com committed
5026
    DBUG_VOID_RETURN;
5027
  if (description_event->binlog_version!=1)
5028
  {
5029 5030 5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042 5043 5044 5045
    file_id= uint4korr(buf + 
                       header_len +
		       load_header_len + CF_FILE_ID_OFFSET);
    /*
      Note that it's ok to use get_data_size() below, because it is computed
      with values we have already read from this event (because we called
      copy_log_event()); we are not using slave's format info to decode
      master's format, we are really using master's format info.
      Anyway, both formats should be identical (except the common_header_len)
      as these Load events are not changed between 4.0 and 5.0 (as logging of
      LOAD DATA INFILE does not use Load_log_event in 5.0).

      The + 1 is for \0 terminating fname  
    */
    block_offset= (description_event->common_header_len +
                   Load_log_event::get_data_size() +
                   create_file_header_len + 1);
5046 5047 5048 5049 5050 5051 5052 5053 5054
    if (len < block_offset)
      return;
    block = (char*)buf + block_offset;
    block_len = len - block_offset;
  }
  else
  {
    sql_ex.force_new_format();
    inited_from_old = 1;
5055
  }
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monty@mysql.com committed
5056
  DBUG_VOID_RETURN;
5057 5058
}

5059

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5060
/*
5061
  Create_file_log_event::print()
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5062
*/
5063 5064

#ifdef MYSQL_CLIENT
5065
void Create_file_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info,
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5066
				  bool enable_local)
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nick@mysql.com committed
5067
{
5068 5069
  Write_on_release_cache cache(&print_event_info->head_cache, file);

5070
  if (print_event_info->short_form)
5071 5072
  {
    if (enable_local && check_fname_outside_temp_buf())
5073
      Load_log_event::print(file, print_event_info);
5074
    return;
5075 5076 5077 5078
  }

  if (enable_local)
  {
5079
    Load_log_event::print(file, print_event_info,
5080
			  !check_fname_outside_temp_buf());
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5081 5082 5083 5084
    /* 
       That one is for "file_id: etc" below: in mysqlbinlog we want the #, in
       SHOW BINLOG EVENTS we don't.
    */
5085
    my_b_printf(&cache, "#"); 
5086 5087
  }

5088
  my_b_printf(&cache, " file_id: %d  block_len: %d\n", file_id, block_len);
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nick@mysql.com committed
5089
}
5090

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monty@mashka.mysql.fi committed
5091

5092
void Create_file_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info)
5093
{
5094
  print(file, print_event_info, 0);
5095
}
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5096
#endif /* MYSQL_CLIENT */
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5097

5098

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monty@narttu.mysql.fi committed
5099
/*
5100
  Create_file_log_event::pack_info()
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5101
*/
5102

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5103
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
5104
void Create_file_log_event::pack_info(Protocol *protocol)
5105
{
5106 5107 5108
  char buf[NAME_LEN*2 + 30 + 21*2], *pos;
  pos= strmov(buf, "db=");
  memcpy(pos, db, db_len);
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5109
  pos= strmov(pos + db_len, ";table=");
5110
  memcpy(pos, table_name, table_name_len);
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5111
  pos= strmov(pos + table_name_len, ";file_id=");
5112 5113 5114
  pos= int10_to_str((long) file_id, pos, 10);
  pos= strmov(pos, ";block_len=");
  pos= int10_to_str((long) block_len, pos, 10);
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5115
  protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
5116
}
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5117
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
5118 5119


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5120
/*
5121
  Create_file_log_event::do_apply_event()
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5122
*/
5123

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5124
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
5125
int Create_file_log_event::do_apply_event(Relay_log_info const *rli)
5126
{
5127 5128
  char proc_info[17+FN_REFLEN+10], *fname_buf;
  char *ext;
5129 5130 5131
  int fd = -1;
  IO_CACHE file;
  int error = 1;
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5132

5133
  bzero((char*)&file, sizeof(file));
5134 5135
  fname_buf= strmov(proc_info, "Making temp file ");
  ext= slave_load_file_stem(fname_buf, file_id, server_id, ".info");
5136
  thd->proc_info= proc_info;
5137 5138 5139 5140
  my_delete(fname_buf, MYF(0)); // old copy may exist already
  if ((fd= my_create(fname_buf, CREATE_MODE,
		     O_WRONLY | O_BINARY | O_EXCL | O_NOFOLLOW,
		     MYF(MY_WME))) < 0 ||
5141 5142 5143
      init_io_cache(&file, fd, IO_SIZE, WRITE_CACHE, (my_off_t)0, 0,
		    MYF(MY_WME|MY_NABP)))
  {
5144 5145 5146
    rli->report(ERROR_LEVEL, my_errno,
                "Error in Create_file event: could not open file '%s'",
                fname_buf);
5147 5148 5149 5150
    goto err;
  }
  
  // a trick to avoid allocating another buffer
5151 5152
  fname= fname_buf;
  fname_len= (uint) (strmov(ext, ".data") - fname);
5153 5154
  if (write_base(&file))
  {
5155
    strmov(ext, ".info"); // to have it right in the error message
5156 5157 5158
    rli->report(ERROR_LEVEL, my_errno,
                "Error in Create_file event: could not write to file '%s'",
                fname_buf);
5159 5160 5161 5162 5163 5164
    goto err;
  }
  end_io_cache(&file);
  my_close(fd, MYF(0));
  
  // fname_buf now already has .data, not .info, because we did our trick
5165 5166 5167 5168
  my_delete(fname_buf, MYF(0)); // old copy may exist already
  if ((fd= my_create(fname_buf, CREATE_MODE,
		     O_WRONLY | O_BINARY | O_EXCL | O_NOFOLLOW,
		     MYF(MY_WME))) < 0)
5169
  {
5170 5171 5172
    rli->report(ERROR_LEVEL, my_errno,
                "Error in Create_file event: could not open file '%s'",
                fname_buf);
5173 5174
    goto err;
  }
5175
  if (my_write(fd, (uchar*) block, block_len, MYF(MY_WME+MY_NABP)))
5176
  {
5177 5178 5179
    rli->report(ERROR_LEVEL, my_errno,
                "Error in Create_file event: write to '%s' failed",
                fname_buf);
5180 5181
    goto err;
  }
5182 5183
  error=0;					// Everything is ok

5184 5185 5186 5187 5188
err:
  if (error)
    end_io_cache(&file);
  if (fd >= 0)
    my_close(fd, MYF(0));
5189
  thd->proc_info= 0;
5190
  return error == 0;
5191
}
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5192
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
5193

5194

monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5195
/**************************************************************************
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5196
	Append_block_log_event methods
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5197
**************************************************************************/
5198

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5199
/*
5200
  Append_block_log_event ctor
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5201
*/
5202 5203

#ifndef MYSQL_CLIENT  
5204 5205 5206
Append_block_log_event::Append_block_log_event(THD *thd_arg,
                                               const char *db_arg,
					       char *block_arg,
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5207 5208 5209
					       uint block_len_arg,
					       bool using_trans)
  :Log_event(thd_arg,0, using_trans), block(block_arg),
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5210
   block_len(block_len_arg), file_id(thd_arg->file_id), db(db_arg)
5211 5212
{
}
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5213
#endif
5214 5215


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5216
/*
5217
  Append_block_log_event ctor
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5218
*/
5219

5220 5221 5222
Append_block_log_event::Append_block_log_event(const char* buf, uint len,
                                               const Format_description_log_event* description_event)
  :Log_event(buf, description_event),block(0)
5223
{
5224 5225 5226 5227 5228 5229
  DBUG_ENTER("Append_block_log_event::Append_block_log_event(char*,...)");
  uint8 common_header_len= description_event->common_header_len; 
  uint8 append_block_header_len=
    description_event->post_header_len[APPEND_BLOCK_EVENT-1];
  uint total_header_len= common_header_len+append_block_header_len;
  if (len < total_header_len)
monty@mysql.com's avatar
monty@mysql.com committed
5230
    DBUG_VOID_RETURN;
5231 5232 5233
  file_id= uint4korr(buf + common_header_len + AB_FILE_ID_OFFSET);
  block= (char*)buf + total_header_len;
  block_len= len - total_header_len;
monty@mysql.com's avatar
monty@mysql.com committed
5234
  DBUG_VOID_RETURN;
5235 5236 5237
}


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5238
/*
5239
  Append_block_log_event::write()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5240
*/
5241

5242
#ifndef MYSQL_CLIENT
5243
bool Append_block_log_event::write(IO_CACHE* file)
5244
{
5245
  uchar buf[APPEND_BLOCK_HEADER_LEN];
5246
  int4store(buf + AB_FILE_ID_OFFSET, file_id);
5247 5248
  return (write_header(file, APPEND_BLOCK_HEADER_LEN + block_len) ||
          my_b_safe_write(file, buf, APPEND_BLOCK_HEADER_LEN) ||
5249
	  my_b_safe_write(file, (uchar*) block, block_len));
5250
}
5251
#endif
5252 5253


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5254
/*
5255
  Append_block_log_event::print()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5256
*/
5257 5258

#ifdef MYSQL_CLIENT  
lars@mysql.com's avatar
lars@mysql.com committed
5259
void Append_block_log_event::print(FILE* file,
5260
				   PRINT_EVENT_INFO* print_event_info)
5261
{
5262 5263
  Write_on_release_cache cache(&print_event_info->head_cache, file);

5264
  if (print_event_info->short_form)
5265
    return;
5266 5267 5268
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\n#%s: file_id: %d  block_len: %d\n",
              get_type_str(), file_id, block_len);
5269
}
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5270
#endif /* MYSQL_CLIENT */
5271 5272


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5273
/*
5274
  Append_block_log_event::pack_info()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5275
*/
5276

hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
5277
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
5278
void Append_block_log_event::pack_info(Protocol *protocol)
5279 5280 5281 5282 5283 5284
{
  char buf[256];
  uint length;
  length= (uint) my_sprintf(buf,
			    (buf, ";file_id=%u;block_len=%u", file_id,
			     block_len));
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5285
  protocol->store(buf, length, &my_charset_bin);
5286 5287 5288
}


5289
/*
5290
  Append_block_log_event::get_create_or_append()
5291 5292
*/

5293
int Append_block_log_event::get_create_or_append() const
5294
{
5295
  return 0; /* append to the file, fail if not exists */
5296 5297
}

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5298
/*
5299
  Append_block_log_event::do_apply_event()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5300
*/
5301

5302
int Append_block_log_event::do_apply_event(Relay_log_info const *rli)
5303
{
5304
  char proc_info[17+FN_REFLEN+10], *fname= proc_info+17;
5305
  int fd;
5306
  int error = 1;
5307
  DBUG_ENTER("Append_block_log_event::do_apply_event");
5308

5309 5310
  fname= strmov(proc_info, "Making temp file ");
  slave_load_file_stem(fname, file_id, server_id, ".data");
5311
  thd->proc_info= proc_info;
5312 5313 5314 5315 5316 5317 5318
  if (get_create_or_append())
  {
    my_delete(fname, MYF(0)); // old copy may exist already
    if ((fd= my_create(fname, CREATE_MODE,
		       O_WRONLY | O_BINARY | O_EXCL | O_NOFOLLOW,
		       MYF(MY_WME))) < 0)
    {
5319 5320 5321
      rli->report(ERROR_LEVEL, my_errno,
                  "Error in %s event: could not create file '%s'",
                  get_type_str(), fname);
5322 5323 5324
      goto err;
    }
  }
5325 5326
  else if ((fd = my_open(fname, O_WRONLY | O_APPEND | O_BINARY | O_NOFOLLOW,
                         MYF(MY_WME))) < 0)
5327
  {
5328 5329 5330
    rli->report(ERROR_LEVEL, my_errno,
                "Error in %s event: could not open file '%s'",
                get_type_str(), fname);
5331 5332
    goto err;
  }
5333
  if (my_write(fd, (uchar*) block, block_len, MYF(MY_WME+MY_NABP)))
5334
  {
5335 5336 5337
    rli->report(ERROR_LEVEL, my_errno,
                "Error in %s event: write to '%s' failed",
                get_type_str(), fname);
5338 5339 5340
    goto err;
  }
  error=0;
5341

5342 5343 5344
err:
  if (fd >= 0)
    my_close(fd, MYF(0));
5345
  thd->proc_info= 0;
5346
  DBUG_RETURN(error);
5347
}
hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
5348
#endif
5349 5350


monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5351
/**************************************************************************
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5352
	Delete_file_log_event methods
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5353
**************************************************************************/
5354

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5355
/*
5356
  Delete_file_log_event ctor
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5357
*/
5358 5359

#ifndef MYSQL_CLIENT
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5360 5361 5362
Delete_file_log_event::Delete_file_log_event(THD *thd_arg, const char* db_arg,
					     bool using_trans)
  :Log_event(thd_arg, 0, using_trans), file_id(thd_arg->file_id), db(db_arg)
5363 5364
{
}
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5365
#endif
5366

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5367
/*
5368
  Delete_file_log_event ctor
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5369
*/
5370

5371 5372 5373
Delete_file_log_event::Delete_file_log_event(const char* buf, uint len,
                                             const Format_description_log_event* description_event)
  :Log_event(buf, description_event),file_id(0)
5374
{
5375 5376 5377
  uint8 common_header_len= description_event->common_header_len;
  uint8 delete_file_header_len= description_event->post_header_len[DELETE_FILE_EVENT-1];
  if (len < (uint)(common_header_len + delete_file_header_len))
5378
    return;
5379
  file_id= uint4korr(buf + common_header_len + DF_FILE_ID_OFFSET);
5380 5381 5382
}


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5383
/*
5384
  Delete_file_log_event::write()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5385
*/
5386

5387
#ifndef MYSQL_CLIENT
5388
bool Delete_file_log_event::write(IO_CACHE* file)
5389
{
5390
 uchar buf[DELETE_FILE_HEADER_LEN];
5391
 int4store(buf + DF_FILE_ID_OFFSET, file_id);
5392 5393
 return (write_header(file, sizeof(buf)) ||
         my_b_safe_write(file, buf, sizeof(buf)));
5394
}
5395
#endif
5396 5397


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5398
/*
5399
  Delete_file_log_event::print()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5400
*/
5401 5402

#ifdef MYSQL_CLIENT  
lars@mysql.com's avatar
lars@mysql.com committed
5403
void Delete_file_log_event::print(FILE* file,
5404
				  PRINT_EVENT_INFO* print_event_info)
5405
{
5406 5407
  Write_on_release_cache cache(&print_event_info->head_cache, file);

5408
  if (print_event_info->short_form)
5409
    return;
5410 5411
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\n#Delete_file: file_id=%u\n", file_id);
5412
}
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5413
#endif /* MYSQL_CLIENT */
5414

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5415
/*
5416
  Delete_file_log_event::pack_info()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5417
*/
5418

hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
5419
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
5420
void Delete_file_log_event::pack_info(Protocol *protocol)
5421 5422 5423 5424
{
  char buf[64];
  uint length;
  length= (uint) my_sprintf(buf, (buf, ";file_id=%u", (uint) file_id));
5425
  protocol->store(buf, (int32) length, &my_charset_bin);
5426
}
hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
5427
#endif
5428

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5429
/*
5430
  Delete_file_log_event::do_apply_event()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5431
*/
5432

hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
5433
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
5434
int Delete_file_log_event::do_apply_event(Relay_log_info const *rli)
5435 5436
{
  char fname[FN_REFLEN+10];
5437
  char *ext= slave_load_file_stem(fname, file_id, server_id, ".data");
5438
  (void) my_delete(fname, MYF(MY_WME));
5439
  strmov(ext, ".info");
5440
  (void) my_delete(fname, MYF(MY_WME));
5441
  return 0;
5442
}
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5443
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
5444 5445


monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5446
/**************************************************************************
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5447
	Execute_load_log_event methods
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5448
**************************************************************************/
5449

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5450
/*
5451
  Execute_load_log_event ctor
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5452
*/
5453 5454

#ifndef MYSQL_CLIENT  
5455 5456
Execute_load_log_event::Execute_load_log_event(THD *thd_arg,
                                               const char* db_arg,
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5457 5458
					       bool using_trans)
  :Log_event(thd_arg, 0, using_trans), file_id(thd_arg->file_id), db(db_arg)
5459 5460
{
}
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5461
#endif
5462 5463
  

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5464
/*
5465
  Execute_load_log_event ctor
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5466
*/
5467

5468 5469 5470
Execute_load_log_event::Execute_load_log_event(const char* buf, uint len,
                                               const Format_description_log_event* description_event)
  :Log_event(buf, description_event), file_id(0)
5471
{
5472 5473 5474
  uint8 common_header_len= description_event->common_header_len;
  uint8 exec_load_header_len= description_event->post_header_len[EXEC_LOAD_EVENT-1];
  if (len < (uint)(common_header_len+exec_load_header_len))
5475
    return;
5476
  file_id= uint4korr(buf + common_header_len + EL_FILE_ID_OFFSET);
5477 5478 5479
}


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5480
/*
5481
  Execute_load_log_event::write()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5482
*/
5483

5484
#ifndef MYSQL_CLIENT
5485
bool Execute_load_log_event::write(IO_CACHE* file)
5486
{
5487
  uchar buf[EXEC_LOAD_HEADER_LEN];
5488
  int4store(buf + EL_FILE_ID_OFFSET, file_id);
5489 5490
  return (write_header(file, sizeof(buf)) || 
          my_b_safe_write(file, buf, sizeof(buf)));
5491
}
5492
#endif
5493 5494


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5495
/*
5496
  Execute_load_log_event::print()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5497
*/
5498 5499

#ifdef MYSQL_CLIENT  
lars@mysql.com's avatar
lars@mysql.com committed
5500
void Execute_load_log_event::print(FILE* file,
5501
				   PRINT_EVENT_INFO* print_event_info)
5502
{
5503 5504
  Write_on_release_cache cache(&print_event_info->head_cache, file);

5505
  if (print_event_info->short_form)
5506
    return;
5507 5508 5509
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\n#Exec_load: file_id=%d\n",
              file_id);
5510
}
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5511
#endif
5512

monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5513
/*
5514
  Execute_load_log_event::pack_info()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5515
*/
5516

hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
5517
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
5518
void Execute_load_log_event::pack_info(Protocol *protocol)
5519 5520 5521 5522
{
  char buf[64];
  uint length;
  length= (uint) my_sprintf(buf, (buf, ";file_id=%u", (uint) file_id));
5523
  protocol->store(buf, (int32) length, &my_charset_bin);
5524 5525 5526
}


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5527
/*
5528
  Execute_load_log_event::do_apply_event()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5529
*/
hf@deer.mysql.r18.ru's avatar
SCRUM  
hf@deer.mysql.r18.ru committed
5530

5531
int Execute_load_log_event::do_apply_event(Relay_log_info const *rli)
5532 5533
{
  char fname[FN_REFLEN+10];
5534
  char *ext;
5535
  int fd;
5536
  int error= 1;
5537
  IO_CACHE file;
5538
  Load_log_event *lev= 0;
5539

5540
  ext= slave_load_file_stem(fname, file_id, server_id, ".info");
5541 5542
  if ((fd = my_open(fname, O_RDONLY | O_BINARY | O_NOFOLLOW,
                    MYF(MY_WME))) < 0 ||
5543 5544 5545
      init_io_cache(&file, fd, IO_SIZE, READ_CACHE, (my_off_t)0, 0,
		    MYF(MY_WME|MY_NABP)))
  {
5546 5547 5548
    rli->report(ERROR_LEVEL, my_errno,
                "Error in Exec_load event: could not open file '%s'",
                fname);
5549 5550
    goto err;
  }
5551
  if (!(lev = (Load_log_event*)Log_event::read_log_event(&file,
5552 5553
                                                         (pthread_mutex_t*)0,
                                                         rli->relay_log.description_event_for_exec)) ||
5554
      lev->get_type_code() != NEW_LOAD_EVENT)
5555
  {
5556
    rli->report(ERROR_LEVEL, 0, "Error in Exec_load event: "
5557
                    "file '%s' appears corrupted", fname);
5558 5559
    goto err;
  }
5560

5561
  lev->thd = thd;
5562
  /*
5563
    lev->do_apply_event should use rli only for errors i.e. should
5564 5565
    not advance rli's position.

5566
    lev->do_apply_event is the place where the table is loaded (it
5567
    calls mysql_load()).
5568
  */
guilhem@mysql.com's avatar
guilhem@mysql.com committed
5569

5570
  const_cast<Relay_log_info*>(rli)->future_group_master_log_pos= log_pos;
5571
  if (lev->do_apply_event(0,rli,1)) 
5572
  {
5573 5574 5575 5576 5577 5578 5579 5580
    /*
      We want to indicate the name of the file that could not be loaded
      (SQL_LOADxxx).
      But as we are here we are sure the error is in rli->last_slave_error and
      rli->last_slave_errno (example of error: duplicate entry for key), so we
      don't want to overwrite it with the filename.
      What we want instead is add the filename to the current error message.
    */
5581
    char *tmp= my_strdup(rli->last_error().message, MYF(MY_WME));
5582 5583
    if (tmp)
    {
5584
      rli->report(ERROR_LEVEL, rli->last_error().number,
5585
                  "%s. Failed executing load from '%s'", tmp, fname);
5586 5587
      my_free(tmp,MYF(0));
    }
5588 5589
    goto err;
  }
guilhem@mysql.com's avatar
guilhem@mysql.com committed
5590 5591 5592 5593 5594 5595 5596 5597 5598 5599
  /*
    We have an open file descriptor to the .info file; we need to close it
    or Windows will refuse to delete the file in my_delete().
  */
  if (fd >= 0)
  {
    my_close(fd, MYF(0));
    end_io_cache(&file);
    fd= -1;
  }
5600
  (void) my_delete(fname, MYF(MY_WME));
5601
  memcpy(ext, ".data", 6);
5602
  (void) my_delete(fname, MYF(MY_WME));
5603
  error = 0;
5604

5605 5606 5607
err:
  delete lev;
  if (fd >= 0)
5608
  {
5609
    my_close(fd, MYF(0));
5610 5611
    end_io_cache(&file);
  }
5612
  return error;
5613
}
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5614

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5615
#endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
5616 5617


5618 5619 5620 5621 5622 5623 5624 5625 5626 5627 5628 5629 5630 5631 5632 5633 5634 5635 5636 5637 5638 5639 5640 5641 5642
/**************************************************************************
	Begin_load_query_log_event methods
**************************************************************************/

#ifndef MYSQL_CLIENT
Begin_load_query_log_event::
Begin_load_query_log_event(THD* thd_arg, const char* db_arg, char* block_arg,
                           uint block_len_arg, bool using_trans)
  :Append_block_log_event(thd_arg, db_arg, block_arg, block_len_arg,
                          using_trans)
{
   file_id= thd_arg->file_id= mysql_bin_log.next_file_id();
}
#endif


Begin_load_query_log_event::
Begin_load_query_log_event(const char* buf, uint len,
                           const Format_description_log_event* desc_event)
  :Append_block_log_event(buf, len, desc_event)
{
}


#if defined( HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
5643
int Begin_load_query_log_event::get_create_or_append() const
5644
{
5645
  return 1; /* create the file */
5646 5647 5648 5649
}
#endif /* defined( HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */


5650 5651 5652 5653 5654 5655 5656 5657 5658 5659 5660 5661 5662
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
Log_event::enum_skip_reason
Begin_load_query_log_event::do_shall_skip(Relay_log_info *rli)
{
  /*
    If the slave skip counter is 1, then we should not start executing
    on the next event.
  */
  return continue_group(rli);
}
#endif


5663 5664 5665 5666 5667 5668 5669
/**************************************************************************
	Execute_load_query_log_event methods
**************************************************************************/


#ifndef MYSQL_CLIENT
Execute_load_query_log_event::
5670
Execute_load_query_log_event(THD *thd_arg, const char* query_arg,
5671 5672 5673 5674 5675
                             ulong query_length_arg, uint fn_pos_start_arg,
                             uint fn_pos_end_arg,
                             enum_load_dup_handling dup_handling_arg,
                             bool using_trans, bool suppress_use,
                             THD::killed_state killed_err_arg):
5676
  Query_log_event(thd_arg, query_arg, query_length_arg, using_trans,
5677
                  suppress_use, killed_err_arg),
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  file_id(thd_arg->file_id), fn_pos_start(fn_pos_start_arg),
  fn_pos_end(fn_pos_end_arg), dup_handling(dup_handling_arg)
{
}
#endif /* !MYSQL_CLIENT */


Execute_load_query_log_event::
Execute_load_query_log_event(const char* buf, uint event_len,
                             const Format_description_log_event* desc_event):
  Query_log_event(buf, event_len, desc_event, EXECUTE_LOAD_QUERY_EVENT),
  file_id(0), fn_pos_start(0), fn_pos_end(0)
{
  if (!Query_log_event::is_valid())
    return;

  buf+= desc_event->common_header_len;

  fn_pos_start= uint4korr(buf + ELQ_FN_POS_START_OFFSET);
  fn_pos_end= uint4korr(buf + ELQ_FN_POS_END_OFFSET);
  dup_handling= (enum_load_dup_handling)(*(buf + ELQ_DUP_HANDLING_OFFSET));

  if (fn_pos_start > q_len || fn_pos_end > q_len ||
      dup_handling > LOAD_DUP_REPLACE)
    return;

  file_id= uint4korr(buf + ELQ_FILE_ID_OFFSET);
}


ulong Execute_load_query_log_event::get_post_header_size_for_derived()
{
  return EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN;
}


5714
#ifndef MYSQL_CLIENT
5715 5716 5717
bool
Execute_load_query_log_event::write_post_header_for_derived(IO_CACHE* file)
{
5718
  uchar buf[EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN];
5719 5720 5721
  int4store(buf, file_id);
  int4store(buf + 4, fn_pos_start);
  int4store(buf + 4 + 4, fn_pos_end);
5722 5723
  *(buf + 4 + 4 + 4)= (uchar) dup_handling;
  return my_b_safe_write(file, buf, EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN);
5724
}
5725
#endif
5726 5727 5728


#ifdef MYSQL_CLIENT
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5729
void Execute_load_query_log_event::print(FILE* file,
5730
                                         PRINT_EVENT_INFO* print_event_info)
5731
{
5732
  print(file, print_event_info, 0);
5733 5734 5735
}


lars@mysql.com's avatar
lars@mysql.com committed
5736
void Execute_load_query_log_event::print(FILE* file,
5737
                                         PRINT_EVENT_INFO* print_event_info,
5738 5739
                                         const char *local_fname)
{
5740 5741 5742
  Write_on_release_cache cache(&print_event_info->head_cache, file);

  print_query_header(&cache, print_event_info);
5743 5744 5745

  if (local_fname)
  {
5746
    my_b_write(&cache, (uchar*) query, fn_pos_start);
5747 5748 5749
    my_b_printf(&cache, " LOCAL INFILE \'");
    my_b_printf(&cache, local_fname);
    my_b_printf(&cache, "\'");
5750
    if (dup_handling == LOAD_DUP_REPLACE)
5751 5752
      my_b_printf(&cache, " REPLACE");
    my_b_printf(&cache, " INTO");
5753
    my_b_write(&cache, (uchar*) query + fn_pos_end, q_len-fn_pos_end);
5754
    my_b_printf(&cache, "%s\n", print_event_info->delimiter);
5755 5756 5757
  }
  else
  {
5758
    my_b_write(&cache, (uchar*) query, q_len);
5759
    my_b_printf(&cache, "%s\n", print_event_info->delimiter);
5760 5761
  }

5762
  if (!print_event_info->short_form)
5763
    my_b_printf(&cache, "# file_id: %d \n", file_id);
5764 5765 5766 5767 5768 5769 5770 5771
}
#endif


#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
void Execute_load_query_log_event::pack_info(Protocol *protocol)
{
  char *buf, *pos;
5772
  if (!(buf= (char*) my_malloc(9 + db_len + q_len + 10 + 21, MYF(MY_WME))))
5773 5774 5775 5776 5777 5778 5779 5780 5781 5782 5783 5784 5785 5786 5787 5788 5789 5790 5791 5792 5793
    return;
  pos= buf;
  if (db && db_len)
  {
    pos= strmov(buf, "use `");
    memcpy(pos, db, db_len);
    pos= strmov(pos+db_len, "`; ");
  }
  if (query && q_len)
  {
    memcpy(pos, query, q_len);
    pos+= q_len;
  }
  pos= strmov(pos, " ;file_id=");
  pos= int10_to_str((long) file_id, pos, 10);
  protocol->store(buf, pos-buf, &my_charset_bin);
  my_free(buf, MYF(MY_ALLOW_ZERO_PTR));
}


int
5794
Execute_load_query_log_event::do_apply_event(Relay_log_info const *rli)
5795 5796 5797 5798 5799 5800 5801
{
  char *p;
  char *buf;
  char *fname;
  char *fname_end;
  int error;

5802 5803
  buf= (char*) my_malloc(q_len + 1 - (fn_pos_end - fn_pos_start) +
                         (FN_REFLEN + 10) + 10 + 8 + 5, MYF(MY_WME));
5804

5805
  DBUG_EXECUTE_IF("LOAD_DATA_INFILE_has_fatal_error", my_free(buf, MYF(0)); buf= NULL;);
5806

5807
  /* Replace filename and LOCAL keyword in query before executing it */
5808
  if (buf == NULL)
5809
  {
5810 5811
    rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR,
                ER(ER_SLAVE_FATAL_ERROR), "Not enough memory");
5812 5813 5814 5815 5816 5817
    return 1;
  }

  p= buf;
  memcpy(p, query, fn_pos_start);
  p+= fn_pos_start;
5818
  fname= (p= strmake(p, STRING_WITH_LEN(" INFILE \'")));
5819 5820
  p= slave_load_file_stem(p, file_id, server_id, ".data");
  fname_end= p= strend(p);                      // Safer than p=p+5
5821
  *(p++)='\'';
5822
  switch (dup_handling) {
5823
  case LOAD_DUP_IGNORE:
5824
    p= strmake(p, STRING_WITH_LEN(" IGNORE"));
5825 5826
    break;
  case LOAD_DUP_REPLACE:
5827
    p= strmake(p, STRING_WITH_LEN(" REPLACE"));
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    break;
  default:
    /* Ordinary load data */
    break;
  }
5833
  p= strmake(p, STRING_WITH_LEN(" INTO"));
5834 5835
  p= strmake(p, query+fn_pos_end, q_len-fn_pos_end);

5836
  error= Query_log_event::do_apply_event(rli, buf, p-buf);
5837 5838 5839 5840

  /* Forging file name for deletion in same buffer */
  *fname_end= 0;

5841 5842 5843 5844 5845 5846
  /*
    If there was an error the slave is going to stop, leave the
    file so that we can re-execute this event at START SLAVE.
  */
  if (!error)
    (void) my_delete(fname, MYF(MY_WME));
5847 5848 5849 5850 5851 5852 5853

  my_free(buf, MYF(MY_ALLOW_ZERO_PTR));
  return error;
}
#endif


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monty@mashka.mysql.fi committed
5854
/**************************************************************************
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5855
	sql_ex_info methods
monty@mashka.mysql.fi's avatar
monty@mashka.mysql.fi committed
5856
**************************************************************************/
5857

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5858
/*
5859
  sql_ex_info::write_data()
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5860
*/
5861

5862
bool sql_ex_info::write_data(IO_CACHE* file)
5863 5864 5865
{
  if (new_format())
  {
5866 5867 5868 5869 5870
    return (write_str(file, field_term, (uint) field_term_len) ||
	    write_str(file, enclosed,   (uint) enclosed_len) ||
	    write_str(file, line_term,  (uint) line_term_len) ||
	    write_str(file, line_start, (uint) line_start_len) ||
	    write_str(file, escaped,    (uint) escaped_len) ||
5871
	    my_b_safe_write(file,(uchar*) &opt_flags,1));
5872 5873 5874
  }
  else
  {
5875 5876 5877 5878
    /**
      @todo This is sensitive to field padding. We should write a
      char[7], not an old_sql_ex. /sven
    */
5879 5880 5881 5882 5883 5884 5885 5886
    old_sql_ex old_ex;
    old_ex.field_term= *field_term;
    old_ex.enclosed=   *enclosed;
    old_ex.line_term=  *line_term;
    old_ex.line_start= *line_start;
    old_ex.escaped=    *escaped;
    old_ex.opt_flags=  opt_flags;
    old_ex.empty_flags=empty_flags;
5887
    return my_b_safe_write(file, (uchar*) &old_ex, sizeof(old_ex)) != 0;
5888 5889 5890 5891
  }
}


monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5892
/*
5893
  sql_ex_info::init()
monty@narttu.mysql.fi's avatar
monty@narttu.mysql.fi committed
5894
*/
5895

5896
char *sql_ex_info::init(char *buf, char *buf_end, bool use_new_format)
5897 5898 5899 5900 5901 5902 5903 5904 5905 5906 5907 5908
{
  cached_new_format = use_new_format;
  if (use_new_format)
  {
    empty_flags=0;
    /*
      The code below assumes that buf will not disappear from
      under our feet during the lifetime of the event. This assumption
      holds true in the slave thread if the log is in new format, but is not
      the case when we have old format because we will be reusing net buffer
      to read the actual file before we write out the Create_file event.
    */
5909 5910 5911 5912 5913 5914
    const char *ptr= buf;
    if (read_str(&ptr, buf_end, (const char **) &field_term, &field_term_len) ||
	read_str(&ptr, buf_end, (const char **) &enclosed,   &enclosed_len) ||
	read_str(&ptr, buf_end, (const char **) &line_term,  &line_term_len) ||
	read_str(&ptr, buf_end, (const char **) &line_start, &line_start_len) ||
	read_str(&ptr, buf_end, (const char **) &escaped,    &escaped_len))
5915 5916 5917 5918 5919 5920 5921 5922 5923 5924 5925 5926 5927 5928 5929 5930 5931 5932 5933 5934 5935 5936 5937 5938 5939 5940
      return 0;
    opt_flags = *buf++;
  }
  else
  {
    field_term_len= enclosed_len= line_term_len= line_start_len= escaped_len=1;
    field_term = buf++;			// Use first byte in string
    enclosed=	 buf++;
    line_term=   buf++;
    line_start=  buf++;
    escaped=     buf++;
    opt_flags =  *buf++;
    empty_flags= *buf++;
    if (empty_flags & FIELD_TERM_EMPTY)
      field_term_len=0;
    if (empty_flags & ENCLOSED_EMPTY)
      enclosed_len=0;
    if (empty_flags & LINE_TERM_EMPTY)
      line_term_len=0;
    if (empty_flags & LINE_START_EMPTY)
      line_start_len=0;
    if (empty_flags & ESCAPED_EMPTY)
      escaped_len=0;
  }
  return buf;
}
5941 5942 5943 5944 5945 5946 5947 5948 5949 5950


/**************************************************************************
	Rows_log_event member functions
**************************************************************************/

#ifndef MYSQL_CLIENT
Rows_log_event::Rows_log_event(THD *thd_arg, TABLE *tbl_arg, ulong tid,
                               MY_BITMAP const *cols, bool is_transactional)
  : Log_event(thd_arg, 0, is_transactional),
5951
    m_row_count(0),
5952 5953
    m_table(tbl_arg),
    m_table_id(tid),
5954
    m_width(tbl_arg ? tbl_arg->s->fields : 1),
5955 5956
    m_rows_buf(0), m_rows_cur(0), m_rows_end(0), m_flags(0) 
#ifdef HAVE_REPLICATION
5957
    , m_curr_row(NULL), m_curr_row_end(NULL), m_key(NULL)
5958
#endif
5959
{
5960 5961
  /*
    We allow a special form of dummy event when the table, and cols
5962
    are null and the table id is ~0UL.  This is a temporary
5963
    solution, to be able to terminate a started statement in the
5964
    binary log: the extraneous events will be removed in the future.
5965
   */
5966 5967
  DBUG_ASSERT(tbl_arg && tbl_arg->s && tid != ~0UL ||
              !tbl_arg && !cols && tid == ~0UL);
5968 5969 5970 5971 5972

  if (thd_arg->options & OPTION_NO_FOREIGN_KEY_CHECKS)
      set_flags(NO_FOREIGN_KEY_CHECKS_F);
  if (thd_arg->options & OPTION_RELAXED_UNIQUE_CHECKS)
      set_flags(RELAXED_UNIQUE_CHECKS_F);
5973
  /* if bitmap_init fails, caught in is_valid() */
5974 5975
  if (likely(!bitmap_init(&m_cols,
                          m_width <= sizeof(m_bitbuf)*8 ? m_bitbuf : NULL,
5976
                          m_width,
5977
                          false)))
5978 5979 5980
  {
    /* Cols can be zero if this is a dummy binrows event */
    if (likely(cols != NULL))
5981
    {
5982
      memcpy(m_cols.bitmap, cols->bitmap, no_bytes_in_map(cols));
5983 5984
      create_last_word_mask(&m_cols);
    }
5985
  }
5986
  else
5987 5988 5989 5990
  {
    // Needed because bitmap_init() does not set it to null on failure
    m_cols.bitmap= 0;
  }
5991 5992 5993 5994 5995 5996 5997 5998
}
#endif

Rows_log_event::Rows_log_event(const char *buf, uint event_len,
                               Log_event_type event_type,
                               const Format_description_log_event
                               *description_event)
  : Log_event(buf, description_event),
5999
    m_row_count(0),
6000
#ifndef MYSQL_CLIENT
6001
    m_table(NULL),
6002 6003 6004
#endif
    m_table_id(0), m_rows_buf(0), m_rows_cur(0), m_rows_end(0)
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
6005
    , m_curr_row(NULL), m_curr_row_end(NULL), m_key(NULL)
6006
#endif
6007 6008 6009 6010 6011
{
  DBUG_ENTER("Rows_log_event::Rows_log_event(const char*,...)");
  uint8 const common_header_len= description_event->common_header_len;
  uint8 const post_header_len= description_event->post_header_len[event_type-1];

6012 6013
  DBUG_PRINT("enter",("event_len: %u  common_header_len: %d  "
		      "post_header_len: %d",
6014 6015 6016 6017 6018 6019 6020 6021 6022 6023 6024 6025 6026
		      event_len, common_header_len,
		      post_header_len));

  const char *post_start= buf + common_header_len;
  post_start+= RW_MAPID_OFFSET;
  if (post_header_len == 6)
  {
    /* Master is of an intermediate source tree before 5.1.4. Id is 4 bytes */
    m_table_id= uint4korr(post_start);
    post_start+= 4;
  }
  else
  {
6027
    m_table_id= (ulong) uint6korr(post_start);
6028 6029 6030 6031 6032
    post_start+= RW_FLAGS_OFFSET;
  }

  m_flags= uint2korr(post_start);

6033 6034 6035
  uchar const *const var_start=
    (const uchar *)buf + common_header_len + post_header_len;
  uchar const *const ptr_width= var_start;
6036
  uchar *ptr_after_width= (uchar*) ptr_width;
6037
  DBUG_PRINT("debug", ("Reading from %p", ptr_after_width));
6038
  m_width = net_field_length(&ptr_after_width);
6039 6040 6041 6042
  DBUG_PRINT("debug", ("m_width=%lu", m_width));
  /* if bitmap_init fails, catched in is_valid() */
  if (likely(!bitmap_init(&m_cols,
                          m_width <= sizeof(m_bitbuf)*8 ? m_bitbuf : NULL,
6043
                          m_width,
6044 6045 6046 6047
                          false)))
  {
    DBUG_PRINT("debug", ("Reading from %p", ptr_after_width));
    memcpy(m_cols.bitmap, ptr_after_width, (m_width + 7) / 8);
6048
    create_last_word_mask(&m_cols);
6049
    ptr_after_width+= (m_width + 7) / 8;
6050
    DBUG_DUMP("m_cols", (uchar*) m_cols.bitmap, no_bytes_in_map(&m_cols));
6051 6052 6053 6054 6055 6056 6057
  }
  else
  {
    // Needed because bitmap_init() does not set it to null on failure
    m_cols.bitmap= NULL;
    DBUG_VOID_RETURN;
  }
6058

6059 6060 6061 6062 6063 6064
  m_cols_ai.bitmap= m_cols.bitmap; /* See explanation in is_valid() */

  if (event_type == UPDATE_ROWS_EVENT)
  {
    DBUG_PRINT("debug", ("Reading from %p", ptr_after_width));

6065
    /* if bitmap_init fails, caught in is_valid() */
6066 6067
    if (likely(!bitmap_init(&m_cols_ai,
                            m_width <= sizeof(m_bitbuf_ai)*8 ? m_bitbuf_ai : NULL,
6068
                            m_width,
6069 6070 6071 6072
                            false)))
    {
      DBUG_PRINT("debug", ("Reading from %p", ptr_after_width));
      memcpy(m_cols_ai.bitmap, ptr_after_width, (m_width + 7) / 8);
6073
      create_last_word_mask(&m_cols_ai);
6074
      ptr_after_width+= (m_width + 7) / 8;
6075 6076
      DBUG_DUMP("m_cols_ai", (uchar*) m_cols_ai.bitmap,
                no_bytes_in_map(&m_cols_ai));
6077 6078 6079 6080 6081 6082 6083 6084 6085
    }
    else
    {
      // Needed because bitmap_init() does not set it to null on failure
      m_cols_ai.bitmap= 0;
      DBUG_VOID_RETURN;
    }
  }

6086
  const uchar* const ptr_rows_data= (const uchar*) ptr_after_width;
6087

6088
  size_t const data_size= event_len - (ptr_rows_data - (const uchar *) buf);
6089
  DBUG_PRINT("info",("m_table_id: %lu  m_flags: %d  m_width: %lu  data_size: %lu",
6090
                     m_table_id, m_flags, m_width, (ulong) data_size));
6091

6092
  m_rows_buf= (uchar*) my_malloc(data_size, MYF(MY_WME));
6093 6094
  if (likely((bool)m_rows_buf))
  {
6095
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
6096
    m_curr_row= m_rows_buf;
6097
#endif
6098 6099 6100 6101 6102 6103 6104 6105 6106 6107 6108 6109 6110 6111 6112
    m_rows_end= m_rows_buf + data_size;
    m_rows_cur= m_rows_end;
    memcpy(m_rows_buf, ptr_rows_data, data_size);
  }
  else
    m_cols.bitmap= 0; // to not free it

  DBUG_VOID_RETURN;
}

Rows_log_event::~Rows_log_event()
{
  if (m_cols.bitmap == m_bitbuf) // no my_malloc happened
    m_cols.bitmap= 0; // so no my_free in bitmap_free
  bitmap_free(&m_cols); // To pair with bitmap_init().
6113
  my_free((uchar*)m_rows_buf, MYF(MY_ALLOW_ZERO_PTR));
6114 6115
}

6116 6117 6118 6119
int Rows_log_event::get_data_size()
{
  int const type_code= get_type_code();

6120 6121
  uchar buf[sizeof(m_width)+1];
  uchar *end= net_store_length(buf, (m_width + 7) / 8);
6122 6123 6124 6125 6126 6127 6128 6129 6130 6131 6132 6133 6134 6135 6136 6137 6138

  DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master",
                  return 6 + no_bytes_in_map(&m_cols) + (end - buf) +
                  (type_code == UPDATE_ROWS_EVENT ? no_bytes_in_map(&m_cols_ai) : 0) +
                  (m_rows_cur - m_rows_buf););
  int data_size= ROWS_HEADER_LEN;
  data_size+= no_bytes_in_map(&m_cols);
  data_size+= end - buf;

  if (type_code == UPDATE_ROWS_EVENT)
    data_size+= no_bytes_in_map(&m_cols_ai);

  data_size+= (m_rows_cur - m_rows_buf);
  return data_size; 
}


6139
#ifndef MYSQL_CLIENT
6140
int Rows_log_event::do_add_row_data(uchar *row_data, size_t length)
6141 6142 6143 6144 6145 6146
{
  /*
    When the table has a primary key, we would probably want, by default, to
    log only the primary key value instead of the entire "before image". This
    would save binlog space. TODO
  */
6147
  DBUG_ENTER("Rows_log_event::do_add_row_data");
6148 6149
  DBUG_PRINT("enter", ("row_data: 0x%lx  length: %lu", (ulong) row_data,
                       (ulong) length));
6150 6151 6152 6153 6154
  /*
    Don't print debug messages when running valgrind since they can
    trigger false warnings.
   */
#ifndef HAVE_purify
6155
  DBUG_DUMP("row_data", row_data, min(length, 32));
6156
#endif
6157 6158

  DBUG_ASSERT(m_rows_buf <= m_rows_cur);
6159
  DBUG_ASSERT(!m_rows_buf || m_rows_end && m_rows_buf < m_rows_end);
6160 6161 6162
  DBUG_ASSERT(m_rows_cur <= m_rows_end);

  /* The cast will always work since m_rows_cur <= m_rows_end */
6163
  if (static_cast<size_t>(m_rows_end - m_rows_cur) <= length)
6164
  {
6165
    size_t const block_size= 1024;
6166
    my_ptrdiff_t const cur_size= m_rows_cur - m_rows_buf;
6167
    my_ptrdiff_t const new_alloc= 
6168
        block_size * ((cur_size + length + block_size - 1) / block_size);
6169

6170
    uchar* const new_buf= (uchar*)my_realloc((uchar*)m_rows_buf, (uint) new_alloc,
6171
                                           MYF(MY_ALLOW_ZERO_PTR|MY_WME));
6172 6173 6174 6175 6176 6177 6178 6179 6180 6181 6182 6183 6184 6185 6186 6187 6188
    if (unlikely(!new_buf))
      DBUG_RETURN(HA_ERR_OUT_OF_MEM);

    /* If the memory moved, we need to move the pointers */
    if (new_buf != m_rows_buf)
    {
      m_rows_buf= new_buf;
      m_rows_cur= m_rows_buf + cur_size;
    }

    /*
       The end pointer should always be changed to point to the end of
       the allocated memory.
    */
    m_rows_end= m_rows_buf + new_alloc;
  }

6189
  DBUG_ASSERT(m_rows_cur + length <= m_rows_end);
6190 6191
  memcpy(m_rows_cur, row_data, length);
  m_rows_cur+= length;
6192
  m_row_count++;
6193 6194 6195 6196 6197
  DBUG_RETURN(0);
}
#endif

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
6198
int Rows_log_event::do_apply_event(Relay_log_info const *rli)
6199
{
6200
  DBUG_ENTER("Rows_log_event::do_apply_event(Relay_log_info*)");
6201
  int error= 0;
6202
  /*
6203 6204 6205
    If m_table_id == ~0UL, then we have a dummy event that does not
    contain any data.  In that case, we just remove all tables in the
    tables_to_lock list, close the thread tables, and return with
6206
    success.
6207
   */
6208
  if (m_table_id == ~0UL)
6209 6210 6211 6212 6213 6214 6215
  {
    /*
       This one is supposed to be set: just an extra check so that
       nothing strange has happened.
     */
    DBUG_ASSERT(get_flags(STMT_END_F));

6216
    const_cast<Relay_log_info*>(rli)->clear_tables_to_lock();
6217
    close_thread_tables(thd);
6218 6219 6220
    thd->clear_error();
    DBUG_RETURN(0);
  }
6221 6222 6223

  /*
    'thd' has been set by exec_relay_log_event(), just before calling
6224
    do_apply_event(). We still check here to prevent future coding
6225
    errors.
6226 6227 6228 6229
  */
  DBUG_ASSERT(rli->sql_thd == thd);

  /*
6230 6231 6232 6233
    If there is no locks taken, this is the first binrow event seen
    after the table map events.  We should then lock all the tables
    used in the transaction and proceed with execution of the actual
    event.
6234
  */
6235
  if (!thd->lock)
6236
  {
6237 6238
    bool need_reopen= 1; /* To execute the first lap of the loop below */

6239
    /*
6240
      lock_tables() reads the contents of thd->lex, so they must be
6241
      initialized. Contrary to in
6242
      Table_map_log_event::do_apply_event() we don't call
6243
      mysql_init_query() as that may reset the binlog format.
6244
    */
6245
    lex_start(thd);
6246

6247 6248 6249 6250 6251 6252 6253 6254 6255 6256 6257 6258 6259 6260 6261 6262 6263 6264
    /*
      There are a few flags that are replicated with each row event.
      Make sure to set/clear them before executing the main body of
      the event.
    */
    if (get_flags(NO_FOREIGN_KEY_CHECKS_F))
        thd->options|= OPTION_NO_FOREIGN_KEY_CHECKS;
    else
        thd->options&= ~OPTION_NO_FOREIGN_KEY_CHECKS;

    if (get_flags(RELAXED_UNIQUE_CHECKS_F))
        thd->options|= OPTION_RELAXED_UNIQUE_CHECKS;
    else
        thd->options&= ~OPTION_RELAXED_UNIQUE_CHECKS;
    /* A small test to verify that objects have consistent types */
    DBUG_ASSERT(sizeof(thd->options) == sizeof(OPTION_RELAXED_UNIQUE_CHECKS));


6265 6266 6267
    while ((error= lock_tables(thd, rli->tables_to_lock,
                               rli->tables_to_lock_count, &need_reopen)))
    {
6268 6269
      if (!need_reopen)
      {
6270
        if (thd->is_slave_error || thd->is_fatal_error)
6271 6272 6273 6274 6275 6276
        {
          /*
            Error reporting borrowed from Query_log_event with many excessive
            simplifications (we don't honour --slave-skip-errors)
          */
          uint actual_error= thd->net.last_errno;
6277 6278 6279 6280 6281
          rli->report(ERROR_LEVEL, actual_error,
                      "Error '%s' in %s event: when locking tables",
                      (actual_error ? thd->net.last_error :
                       "unexpected success or fatal error"),
                      get_type_str());
6282 6283 6284 6285
          thd->is_fatal_error= 1;
        }
        else
        {
6286 6287 6288
          rli->report(ERROR_LEVEL, error,
                      "Error in %s event: when locking tables",
                      get_type_str());
6289
        }
6290
        const_cast<Relay_log_info*>(rli)->clear_tables_to_lock();
6291 6292
        DBUG_RETURN(error);
      }
6293

6294
      /*
6295
        So we need to reopen the tables.
6296

6297 6298
        We need to flush the pending RBR event, since it keeps a
        pointer to an open table.
6299

6300 6301 6302
        ALTERNATIVE SOLUTION (not implemented): Extract a pointer to
        the pending RBR event and reset the table pointer after the
        tables has been reopened.
6303

6304 6305
        NOTE: For this new scheme there should be no pending event:
        need to add code to assert that is the case.
6306 6307
       */
      thd->binlog_flush_pending_rows_event(false);
6308 6309
      TABLE_LIST *tables= rli->tables_to_lock;
      close_tables_for_reopen(thd, &tables);
6310

6311 6312
      uint tables_count= rli->tables_to_lock_count;
      if ((error= open_tables(thd, &tables, &tables_count, 0)))
6313
      {
6314
        if (thd->is_slave_error || thd->is_fatal_error)
6315 6316 6317 6318 6319 6320
        {
          /*
            Error reporting borrowed from Query_log_event with many excessive
            simplifications (we don't honour --slave-skip-errors)
          */
          uint actual_error= thd->net.last_errno;
6321 6322 6323 6324
          rli->report(ERROR_LEVEL, actual_error,
                      "Error '%s' on reopening tables",
                      (actual_error ? thd->net.last_error :
                       "unexpected success or fatal error"));
6325
          thd->is_slave_error= 1;
6326
        }
6327
        const_cast<Relay_log_info*>(rli)->clear_tables_to_lock();
6328
        DBUG_RETURN(error);
6329
      }
6330
    }
6331 6332 6333 6334 6335 6336 6337 6338 6339 6340

    /*
      When the open and locking succeeded, we check all tables to
      ensure that they still have the correct type.

      We can use a down cast here since we know that every table added
      to the tables_to_lock is a RPL_TABLE_LIST.
    */

    {
6341
      RPL_TABLE_LIST *ptr= rli->tables_to_lock;
6342 6343 6344 6345 6346 6347
      for ( ; ptr ; ptr= static_cast<RPL_TABLE_LIST*>(ptr->next_global))
      {
        if (ptr->m_tabledef.compatible_with(rli, ptr->table))
        {
          mysql_unlock_tables(thd, thd->lock);
          thd->lock= 0;
6348
          thd->is_slave_error= 1;
6349
          const_cast<Relay_log_info*>(rli)->clear_tables_to_lock();
6350 6351 6352 6353 6354
          DBUG_RETURN(ERR_BAD_TABLE_DEF);
        }
      }
    }

6355
    /*
6356 6357
      ... and then we add all the tables to the table map and remove
      them from tables to lock.
6358 6359 6360

      We also invalidate the query cache for all the tables, since
      they will now be changed.
6361 6362 6363 6364 6365 6366 6367

      TODO [/Matz]: Maybe the query cache should not be invalidated
      here? It might be that a table is not changed, even though it
      was locked for the statement.  We do know that each
      Rows_log_event contain at least one row, so after processing one
      Rows_log_event, we can invalidate the query cache for the
      associated table.
6368
     */
6369
    for (TABLE_LIST *ptr= rli->tables_to_lock ; ptr ; ptr= ptr->next_global)
6370
    {
6371
      const_cast<Relay_log_info*>(rli)->m_table_map.set_table(ptr->table_id, ptr->table);
6372
    }
6373 6374 6375
#ifdef HAVE_QUERY_CACHE
    query_cache.invalidate_locked_for_write(rli->tables_to_lock);
#endif
6376 6377
  }

6378 6379
  TABLE* 
    table= 
6380
    m_table= const_cast<Relay_log_info*>(rli)->m_table_map.get_table(m_table_id);
6381 6382 6383 6384 6385

  if (table)
  {
    /*
      table == NULL means that this table should not be replicated
6386
      (this was set up by Table_map_log_event::do_apply_event()
6387
      which tested replicate-* rules).
6388
    */
6389 6390 6391 6392 6393 6394 6395 6396 6397 6398 6399

    /*
      It's not needed to set_time() but
      1) it continues the property that "Time" in SHOW PROCESSLIST shows how
      much slave is behind
      2) it will be needed when we allow replication from a table with no
      TIMESTAMP column to a table with one.
      So we call set_time(), like in SBR. Presently it changes nothing.
    */
    thd->set_time((time_t)when);

6400 6401 6402 6403 6404 6405 6406 6407 6408
    /*
      Now we are in a statement and will stay in a statement until we
      see a STMT_END_F.

      We set this flag here, before actually applying any rows, in
      case the SQL thread is stopped and we need to detect that we're
      inside a statement and halting abruptly might cause problems
      when restarting.
     */
6409
    const_cast<Relay_log_info*>(rli)->set_flag(Relay_log_info::IN_STMT);
6410

6411 6412
     if ( m_width == table->s->fields && bitmap_is_set_all(&m_cols))
      set_flags(COMPLETE_ROWS_F);
6413

6414 6415 6416 6417 6418 6419 6420 6421 6422 6423 6424 6425 6426 6427 6428 6429
    /* 
      Set tables write and read sets.
      
      Read_set contains all slave columns (in case we are going to fetch
      a complete record from slave)
      
      Write_set equals the m_cols bitmap sent from master but it can be 
      longer if slave has extra columns. 
     */ 

    DBUG_PRINT_BITSET("debug", "Setting table's write_set from: %s", &m_cols);
    
    bitmap_set_all(table->read_set);
    bitmap_set_all(table->write_set);
    if (!get_flags(COMPLETE_ROWS_F))
      bitmap_intersect(table->write_set,&m_cols);
6430

6431 6432
    this->slave_exec_mode= slave_exec_mode_options; // fix the mode

6433 6434
    // Do event specific preparations 
    error= do_before_row_operations(rli);
6435

6436
    // row processing loop
6437

6438 6439
    while (error == 0 && m_curr_row < m_rows_end)
    {
6440 6441 6442 6443
      /* in_use can have been set to NULL in close_tables_for_reopen */
      THD* old_thd= table->in_use;
      if (!table->in_use)
        table->in_use= thd;
6444 6445 6446

      error= do_exec_row(rli);

6447 6448 6449 6450 6451
      table->in_use = old_thd;
      switch (error)
      {
      case 0:
	break;
6452 6453 6454 6455 6456 6457 6458 6459 6460 6461 6462 6463 6464
      /*
        The following list of "idempotent" errors
        means that an error from the list might happen
        because of idempotent (more than once) 
        applying of a binlog file.
        Notice, that binlog has a  ddl operation its
        second applying may cause

        case HA_ERR_TABLE_DEF_CHANGED:
        case HA_ERR_CANNOT_ADD_FOREIGN:
        
        which are not included into to the list.
      */
6465
      case HA_ERR_RECORD_CHANGED:
6466 6467 6468
      case HA_ERR_RECORD_DELETED:
      case HA_ERR_KEY_NOT_FOUND:
      case HA_ERR_END_OF_FILE:
6469 6470 6471 6472 6473 6474
      case HA_ERR_FOUND_DUPP_KEY:
      case HA_ERR_FOUND_DUPP_UNIQUE:
      case HA_ERR_FOREIGN_DUPLICATE_KEY:
      case HA_ERR_NO_REFERENCED_ROW:
      case HA_ERR_ROW_IS_REFERENCED:

6475
        DBUG_PRINT("info", ("error: %s", HA_ERR(error)));
6476 6477 6478 6479 6480 6481 6482 6483
        if (bit_is_set(slave_exec_mode, SLAVE_EXEC_MODE_IDEMPOTENT) == 1)
        {
          if (global_system_variables.log_warnings)
            slave_rows_error_report(WARNING_LEVEL, error, rli, thd, table,
                                    get_type_str(),
                                    RPL_LOG_NAME, (ulong) log_pos);
          error= 0;
        }
6484
        break;
6485
        
6486
      default:
6487
	thd->is_slave_error= 1;
6488 6489 6490
	break;
      }

6491 6492 6493 6494 6495 6496 6497
      /*
       If m_curr_row_end  was not set during event execution (e.g., because
       of errors) we can't proceed to the next row. If the error is transient
       (i.e., error==0 at this point) we must call unpack_current_row() to set 
       m_curr_row_end.
      */ 
   
6498 6499 6500 6501
      DBUG_PRINT("info", ("error: %d", error));
      DBUG_PRINT("info", ("curr_row: 0x%lu; curr_row_end: 0x%lu; rows_end: 0x%lu",
                          (ulong) m_curr_row, (ulong) m_curr_row_end, (ulong) m_rows_end));

6502 6503 6504 6505 6506 6507 6508 6509 6510 6511 6512 6513
      if (!m_curr_row_end && !error)
        unpack_current_row(rli);
  
      // at this moment m_curr_row_end should be set
      DBUG_ASSERT(error || m_curr_row_end != NULL); 
      DBUG_ASSERT(error || m_curr_row < m_curr_row_end);
      DBUG_ASSERT(error || m_curr_row_end <= m_rows_end);
  
      m_curr_row= m_curr_row_end;
 
    } // row processing loop

6514
    DBUG_EXECUTE_IF("STOP_SLAVE_after_first_Rows_event",
6515
                    const_cast<Relay_log_info*>(rli)->abort_slave= 1;);
6516
    error= do_after_row_operations(rli, error);
6517
    if (!cache_stmt)
6518 6519 6520 6521
    {
      DBUG_PRINT("info", ("Marked that we need to keep log"));
      thd->options|= OPTION_KEEP_LOG;
    }
6522
  } // if (table)
6523

6524
  /*
6525 6526
    We need to delay this clear until here bacause unpack_current_row() uses
    master-side table definitions stored in rli.
6527 6528
  */
  if (rli->tables_to_lock && get_flags(STMT_END_F))
6529
    const_cast<Relay_log_info*>(rli)->clear_tables_to_lock();
6530
  
6531 6532
  if (error)
  {                     /* error has occured during the transaction */
6533 6534 6535 6536 6537
    slave_rows_error_report(ERROR_LEVEL, error, rli, thd, table,
                            get_type_str(), RPL_LOG_NAME, (ulong) log_pos);
  }
  if (error)
  {
6538
    /*
6539 6540 6541 6542 6543 6544 6545 6546
      If one day we honour --skip-slave-errors in row-based replication, and
      the error should be skipped, then we would clear mappings, rollback,
      close tables, but the slave SQL thread would not stop and then may
      assume the mapping is still available, the tables are still open...
      So then we should clear mappings/rollback/close here only if this is a
      STMT_END_F.
      For now we code, knowing that error is not skippable and so slave SQL
      thread is certainly going to stop.
6547
      rollback at the caller along with sbr.
6548
    */
6549
    thd->reset_current_stmt_binlog_row_based();
6550
    const_cast<Relay_log_info*>(rli)->cleanup_context(thd, error);
6551
    thd->is_slave_error= 1;
6552 6553 6554
    DBUG_RETURN(error);
  }

6555 6556 6557 6558 6559 6560 6561 6562 6563 6564 6565 6566 6567 6568 6569 6570 6571 6572 6573 6574 6575 6576
  /*
    This code would ideally be placed in do_update_pos() instead, but
    since we have no access to table there, we do the setting of
    last_event_start_time here instead.
  */
  if (table && (table->s->primary_key == MAX_KEY) &&
      !cache_stmt && get_flags(STMT_END_F) == RLE_NO_FLAGS)
  {
    /*
      ------------ Temporary fix until WL#2975 is implemented ---------

      This event is not the last one (no STMT_END_F). If we stop now
      (in case of terminate_slave_thread()), how will we restart? We
      have to restart from Table_map_log_event, but as this table is
      not transactional, the rows already inserted will still be
      present, and idempotency is not guaranteed (no PK) so we risk
      that repeating leads to double insert. So we desperately try to
      continue, hope we'll eventually leave this buggy situation (by
      executing the final Rows_log_event). If we are in a hopeless
      wait (reached end of last relay log and nothing gets appended
      there), we timeout after one minute, and notify DBA about the
      problem.  When WL#2975 is implemented, just remove the member
6577
      Relay_log_info::last_event_start_time and all its occurrences.
6578
    */
6579
    const_cast<Relay_log_info*>(rli)->last_event_start_time= my_time(0);
6580 6581 6582 6583 6584
  }

  DBUG_RETURN(0);
}

6585
Log_event::enum_skip_reason
6586
Rows_log_event::do_shall_skip(Relay_log_info *rli)
6587 6588 6589 6590 6591 6592 6593 6594 6595 6596 6597 6598
{
  /*
    If the slave skip counter is 1 and this event does not end a
    statement, then we should not start executing on the next event.
    Otherwise, we defer the decision to the normal skipping logic.
  */
  if (rli->slave_skip_counter == 1 && !get_flags(STMT_END_F))
    return Log_event::EVENT_SKIP_IGNORE;
  else
    return Log_event::do_shall_skip(rli);
}

6599
int
6600
Rows_log_event::do_update_pos(Relay_log_info *rli)
6601 6602 6603 6604 6605 6606 6607
{
  DBUG_ENTER("Rows_log_event::do_update_pos");
  int error= 0;

  DBUG_PRINT("info", ("flags: %s",
                      get_flags(STMT_END_F) ? "STMT_END_F " : ""));

6608 6609 6610 6611 6612 6613 6614 6615 6616 6617 6618 6619 6620 6621 6622 6623 6624 6625
  if (get_flags(STMT_END_F))
  {
    /*
      This is the end of a statement or transaction, so close (and
      unlock) the tables we opened when processing the
      Table_map_log_event starting the statement.

      OBSERVER.  This will clear *all* mappings, not only those that
      are open for the table. There is not good handle for on-close
      actions for tables.

      NOTE. Even if we have no table ('table' == 0) we still need to be
      here, so that we increase the group relay log position. If we didn't, we
      could have a group relay log position which lags behind "forever"
      (assume the last master's transaction is ignored by the slave because of
      replicate-ignore rules).
    */
    thd->binlog_flush_pending_rows_event(true);
6626

6627 6628 6629 6630 6631 6632 6633 6634 6635 6636
    /*
      If this event is not in a transaction, the call below will, if some
      transactional storage engines are involved, commit the statement into
      them and flush the pending event to binlog.
      If this event is in a transaction, the call will do nothing, but a
      Xid_log_event will come next which will, if some transactional engines
      are involved, commit the transaction and flush the pending event to the
      binlog.
    */
    error= ha_autocommit_or_rollback(thd, 0);
6637

6638 6639 6640 6641 6642 6643 6644 6645 6646 6647
    /*
      Now what if this is not a transactional engine? we still need to
      flush the pending event to the binlog; we did it with
      thd->binlog_flush_pending_rows_event(). Note that we imitate
      what is done for real queries: a call to
      ha_autocommit_or_rollback() (sometimes only if involves a
      transactional engine), and a call to be sure to have the pending
      event flushed.
    */

6648
    thd->reset_current_stmt_binlog_row_based();
6649

6650
    rli->cleanup_context(thd, 0);
6651 6652
    if (error == 0)
    {
6653 6654 6655 6656 6657 6658 6659
      /*
        Indicate that a statement is finished.
        Step the group log position if we are not in a transaction,
        otherwise increase the event log position.
       */
      rli->stmt_done(log_pos, when);

6660 6661 6662 6663 6664 6665 6666 6667 6668 6669 6670
      /*
        Clear any errors pushed in thd->net.last_err* if for example "no key
        found" (as this is allowed). This is a safety measure; apparently
        those errors (e.g. when executing a Delete_rows_log_event of a
        non-existing row, like in rpl_row_mystery22.test,
        thd->net.last_error = "Can't find record in 't1'" and last_errno=1032)
        do not become visible. We still prefer to wipe them out.
      */
      thd->clear_error();
    }
    else
6671 6672 6673
      rli->report(ERROR_LEVEL, error,
                  "Error in %s event: commit of row events failed, "
                  "table `%s`.`%s`",
6674 6675
                  get_type_str(), m_table->s->db.str,
                  m_table->s->table_name.str);
6676
  }
6677
  else
6678
  {
6679
    rli->inc_event_relay_log_pos();
6680 6681
  }

6682
  DBUG_RETURN(error);
6683
}
6684

6685 6686 6687 6688 6689
#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */

#ifndef MYSQL_CLIENT
bool Rows_log_event::write_data_header(IO_CACHE *file)
{
6690
  uchar buf[ROWS_HEADER_LEN];	// No need to init the buffer
6691
  DBUG_ASSERT(m_table_id != ~0UL);
6692 6693 6694 6695 6696 6697 6698 6699 6700 6701 6702 6703 6704 6705 6706 6707 6708
  DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master",
                  {
                    int4store(buf + 0, m_table_id);
                    int2store(buf + 4, m_flags);
                    return (my_b_safe_write(file, buf, 6));
                  });
  int6store(buf + RW_MAPID_OFFSET, (ulonglong)m_table_id);
  int2store(buf + RW_FLAGS_OFFSET, m_flags);
  return (my_b_safe_write(file, buf, ROWS_HEADER_LEN));
}

bool Rows_log_event::write_data_body(IO_CACHE*file)
{
  /*
     Note that this should be the number of *bits*, not the number of
     bytes.
  */
6709
  uchar sbuf[sizeof(m_width)];
6710
  my_ptrdiff_t const data_size= m_rows_cur - m_rows_buf;
6711
  bool res= false;
6712 6713
  uchar *const sbuf_end= net_store_length(sbuf, (size_t) m_width);
  DBUG_ASSERT(static_cast<size_t>(sbuf_end - sbuf) <= sizeof(sbuf));
6714

6715 6716
  DBUG_DUMP("m_width", sbuf, (size_t) (sbuf_end - sbuf));
  res= res || my_b_safe_write(file, sbuf, (size_t) (sbuf_end - sbuf));
6717

6718 6719
  DBUG_DUMP("m_cols", (uchar*) m_cols.bitmap, no_bytes_in_map(&m_cols));
  res= res || my_b_safe_write(file, (uchar*) m_cols.bitmap,
6720 6721 6722 6723 6724 6725
                              no_bytes_in_map(&m_cols));
  /*
    TODO[refactor write]: Remove the "down cast" here (and elsewhere).
   */
  if (get_type_code() == UPDATE_ROWS_EVENT)
  {
6726 6727 6728
    DBUG_DUMP("m_cols_ai", (uchar*) m_cols_ai.bitmap,
              no_bytes_in_map(&m_cols_ai));
    res= res || my_b_safe_write(file, (uchar*) m_cols_ai.bitmap,
6729 6730
                                no_bytes_in_map(&m_cols_ai));
  }
6731 6732
  DBUG_DUMP("rows", m_rows_buf, data_size);
  res= res || my_b_safe_write(file, m_rows_buf, (size_t) data_size);
6733 6734 6735

  return res;

6736 6737 6738
}
#endif

6739
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
6740 6741
void Rows_log_event::pack_info(Protocol *protocol)
{
6742 6743 6744
  char buf[256];
  char const *const flagstr=
    get_flags(STMT_END_F) ? " flags: STMT_END_F" : "";
6745
  size_t bytes= my_snprintf(buf, sizeof(buf),
6746
                               "table_id: %lu%s", m_table_id, flagstr);
6747
  protocol->store(buf, bytes, &my_charset_bin);
6748 6749 6750
}
#endif

6751 6752 6753 6754 6755 6756 6757 6758 6759 6760 6761
#ifdef MYSQL_CLIENT
void Rows_log_event::print_helper(FILE *file,
                                  PRINT_EVENT_INFO *print_event_info,
                                  char const *const name)
{
  IO_CACHE *const head= &print_event_info->head_cache;
  IO_CACHE *const body= &print_event_info->body_cache;
  if (!print_event_info->short_form)
  {
    bool const last_stmt_event= get_flags(STMT_END_F);
    print_header(head, print_event_info, !last_stmt_event);
6762 6763 6764
    my_b_printf(head, "\t%s: table id %lu%s\n",
                name, m_table_id,
                last_stmt_event ? " flags: STMT_END_F" : "");
6765 6766 6767 6768 6769
    print_base64(body, print_event_info, !last_stmt_event);
  }

  if (get_flags(STMT_END_F))
  {
6770 6771
    copy_event_cache_to_file_and_reinit(head, file);
    copy_event_cache_to_file_and_reinit(body, file);
6772 6773 6774 6775
  }
}
#endif

6776
/**************************************************************************
6777
	Table_map_log_event member functions and support functions
6778 6779
**************************************************************************/

6780 6781 6782 6783
/**
  @page How replication of field metadata works.
  
  When a table map is created, the master first calls 
6784
  Table_map_log_event::save_field_metadata() which calculates how many 
6785
  values will be in the field metadata. Only those fields that require the 
6786 6787 6788 6789 6790 6791 6792
  extra data are added. The method also loops through all of the fields in 
  the table calling the method Field::save_field_metadata() which returns the
  values for the field that will be saved in the metadata and replicated to
  the slave. Once all fields have been processed, the table map is written to
  the binlog adding the size of the field metadata and the field metadata to
  the end of the body of the table map.

6793 6794 6795 6796 6797 6798 6799
  When a table map is read on the slave, the field metadata is read from the 
  table map and passed to the table_def class constructor which saves the 
  field metadata from the table map into an array based on the type of the 
  field. Field metadata values not present (those fields that do not use extra 
  data) in the table map are initialized as zero (0). The array size is the 
  same as the columns for the table on the slave.

6800 6801 6802 6803 6804 6805 6806 6807 6808 6809
  Additionally, values saved for field metadata on the master are saved as a 
  string of bytes (uchar) in the binlog. A field may require 1 or more bytes
  to store the information. In cases where values require multiple bytes 
  (e.g. values > 255), the endian-safe methods are used to properly encode 
  the values on the master and decode them on the slave. When the field
  metadata values are captured on the slave, they are stored in an array of
  type uint16. This allows the least number of casts to prevent casting bugs
  when the field metadata is used in comparisons of field attributes. When
  the field metadata is used for calculating addresses in pointer math, the
  type used is uint32. 
6810 6811 6812 6813 6814 6815 6816 6817 6818 6819 6820 6821 6822 6823 6824 6825 6826 6827 6828 6829 6830 6831 6832 6833 6834 6835 6836 6837 6838 6839 6840
*/

/**
  Save the field metadata based on the real_type of the field.
  The metadata saved depends on the type of the field. Some fields
  store a single byte for pack_length() while others store two bytes
  for field_length (max length).
  
  @retval 0 Ok.

  TODO: We may want to consider changing the encoding of the information.
  Currently, the code attempts to minimize the number of bytes written to 
  the tablemap. There are at least two other alternatives; 1) using 
  net_store_length() to store the data allowing it to choose the number of
  bytes that are appropriate thereby making the code much easier to 
  maintain (only 1 place to change the encoding), or 2) use a fixed number
  of bytes for each field. The problem with option 1 is that net_store_length()
  will use one byte if the value < 251, but 3 bytes if it is > 250. Thus,
  for fields like CHAR which can be no larger than 255 characters, the method
  will use 3 bytes when the value is > 250. Further, every value that is
  encoded using 2 parts (e.g., pack_length, field_length) will be numerically
  > 250 therefore will use 3 bytes for eah value. The problem with option 2
  is less wasteful for space but does waste 1 byte for every field that does
  not encode 2 parts. 
*/
#if !defined(MYSQL_CLIENT)
int Table_map_log_event::save_field_metadata()
{
  DBUG_ENTER("Table_map_log_event::save_field_metadata");
  int index= 0;
  for (unsigned int i= 0 ; i < m_table->s->fields ; i++)
6841 6842
    index+= m_table->s->field[i]->save_field_metadata(&m_field_metadata[index]);
  DBUG_RETURN(index);
6843 6844 6845
}
#endif /* !defined(MYSQL_CLIENT) */

6846 6847 6848 6849 6850 6851 6852 6853 6854 6855 6856 6857 6858 6859
/*
  Constructor used to build an event for writing to the binary log.
  Mats says tbl->s lives longer than this event so it's ok to copy pointers
  (tbl->s->db etc) and not pointer content.
 */
#if !defined(MYSQL_CLIENT)
Table_map_log_event::Table_map_log_event(THD *thd, TABLE *tbl, ulong tid,
                                         bool is_transactional, uint16 flags)
  : Log_event(thd, 0, is_transactional),
    m_table(tbl),
    m_dbnam(tbl->s->db.str),
    m_dblen(m_dbnam ? tbl->s->db.length : 0),
    m_tblnam(tbl->s->table_name.str),
    m_tbllen(tbl->s->table_name.length),
6860 6861 6862 6863 6864 6865 6866 6867 6868
    m_colcnt(tbl->s->fields),
    m_memory(NULL),
    m_table_id(tid),
    m_flags(flags),
    m_data_size(0),
    m_field_metadata(0),
    m_field_metadata_size(0),
    m_null_bits(0),
    m_meta_memory(NULL)
6869
{
6870
  DBUG_ASSERT(m_table_id != ~0UL);
6871 6872 6873 6874 6875 6876 6877 6878 6879 6880 6881 6882
  /*
    In TABLE_SHARE, "db" and "table_name" are 0-terminated (see this comment in
    table.cc / alloc_table_share():
      Use the fact the key is db/0/table_name/0
    As we rely on this let's assert it.
  */
  DBUG_ASSERT((tbl->s->db.str == 0) ||
              (tbl->s->db.str[tbl->s->db.length] == 0));
  DBUG_ASSERT(tbl->s->table_name.str[tbl->s->table_name.length] == 0);


  m_data_size=  TABLE_MAP_HEADER_LEN;
serg@serg.mylan's avatar
serg@serg.mylan committed
6883
  DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master", m_data_size= 6;);
6884 6885 6886 6887
  m_data_size+= m_dblen + 2;	// Include length and terminating \0
  m_data_size+= m_tbllen + 2;	// Include length and terminating \0
  m_data_size+= 1 + m_colcnt;	// COLCNT and column types

6888
  /* If malloc fails, caught in is_valid() */
6889
  if ((m_memory= (uchar*) my_malloc(m_colcnt, MYF(MY_WME))))
6890
  {
monty@mysql.com's avatar
monty@mysql.com committed
6891
    m_coltype= reinterpret_cast<uchar*>(m_memory);
6892 6893 6894
    for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
      m_coltype[i]= m_table->field[i]->type();
  }
6895 6896 6897 6898 6899 6900 6901 6902 6903 6904 6905

  /*
    Calculate a bitmap for the results of maybe_null() for all columns.
    The bitmap is used to determine when there is a column from the master
    that is not on the slave and is null and thus not in the row data during
    replication.
  */
  uint num_null_bytes= (m_table->s->fields + 7) / 8;
  m_data_size+= num_null_bytes;
  m_meta_memory= (uchar *)my_multi_malloc(MYF(MY_WME),
                                 &m_null_bits, num_null_bytes,
6906
                                 &m_field_metadata, (m_colcnt * 2),
6907
                                 NULL);
6908 6909 6910 6911 6912 6913 6914 6915 6916 6917 6918 6919 6920 6921 6922 6923 6924 6925

  bzero(m_field_metadata, (m_colcnt * 2));

  /*
    Create an array for the field metadata and store it.
  */
  m_field_metadata_size= save_field_metadata();
  DBUG_ASSERT(m_field_metadata_size <= (m_colcnt * 2));

  /*
    Now set the size of the data to the size of the field metadata array
    plus one or two bytes for number of elements in the field metadata array.
  */
  if (m_field_metadata_size > 255)
    m_data_size+= m_field_metadata_size + 2; 
  else
    m_data_size+= m_field_metadata_size + 1; 

6926 6927 6928 6929 6930
  bzero(m_null_bits, num_null_bytes);
  for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
    if (m_table->field[i]->maybe_null())
      m_null_bits[(i / 8)]+= 1 << (i % 8);

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}
#endif /* !defined(MYSQL_CLIENT) */

/*
  Constructor used by slave to read the event from the binary log.
 */
#if defined(HAVE_REPLICATION)
Table_map_log_event::Table_map_log_event(const char *buf, uint event_len,
                                         const Format_description_log_event
                                         *description_event)

  : Log_event(buf, description_event),
#ifndef MYSQL_CLIENT
6944
    m_table(NULL),
6945
#endif
6946 6947 6948 6949 6950
    m_dbnam(NULL), m_dblen(0), m_tblnam(NULL), m_tbllen(0),
    m_colcnt(0), m_coltype(0),
    m_memory(NULL), m_table_id(ULONG_MAX), m_flags(0),
    m_data_size(0), m_field_metadata(0), m_field_metadata_size(0),
    m_null_bits(0), m_meta_memory(NULL)
6951
{
6952
  unsigned int bytes_read= 0;
6953 6954 6955 6956
  DBUG_ENTER("Table_map_log_event::Table_map_log_event(const char*,uint,...)");

  uint8 common_header_len= description_event->common_header_len;
  uint8 post_header_len= description_event->post_header_len[TABLE_MAP_EVENT-1];
6957
  DBUG_PRINT("info",("event_len: %u  common_header_len: %d  post_header_len: %d",
6958 6959
                     event_len, common_header_len, post_header_len));

6960 6961 6962 6963 6964
  /*
    Don't print debug messages when running valgrind since they can
    trigger false warnings.
   */
#ifndef HAVE_purify
6965
  DBUG_DUMP("event buffer", (uchar*) buf, event_len);
6966
#endif
6967 6968 6969 6970 6971 6972 6973 6974 6975 6976 6977 6978 6979 6980

  /* Read the post-header */
  const char *post_start= buf + common_header_len;

  post_start+= TM_MAPID_OFFSET;
  if (post_header_len == 6)
  {
    /* Master is of an intermediate source tree before 5.1.4. Id is 4 bytes */
    m_table_id= uint4korr(post_start);
    post_start+= 4;
  }
  else
  {
    DBUG_ASSERT(post_header_len == TABLE_MAP_HEADER_LEN);
6981
    m_table_id= (ulong) uint6korr(post_start);
6982 6983 6984
    post_start+= TM_FLAGS_OFFSET;
  }

6985
  DBUG_ASSERT(m_table_id != ~0UL);
6986 6987 6988 6989 6990 6991 6992

  m_flags= uint2korr(post_start);

  /* Read the variable part of the event */
  const char *const vpart= buf + common_header_len + post_header_len;

  /* Extract the length of the various parts from the buffer */
6993
  uchar const *const ptr_dblen= (uchar const*)vpart + 0;
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monty@mysql.com committed
6994
  m_dblen= *(uchar*) ptr_dblen;
6995 6996

  /* Length of database name + counter + terminating null */
6997
  uchar const *const ptr_tbllen= ptr_dblen + m_dblen + 2;
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6998
  m_tbllen= *(uchar*) ptr_tbllen;
6999 7000

  /* Length of table name + counter + terminating null */
7001
  uchar const *const ptr_colcnt= ptr_tbllen + m_tbllen + 2;
7002 7003
  uchar *ptr_after_colcnt= (uchar*) ptr_colcnt;
  m_colcnt= net_field_length(&ptr_after_colcnt);
7004

7005
  DBUG_PRINT("info",("m_dblen: %lu  off: %ld  m_tbllen: %lu  off: %ld  m_colcnt: %lu  off: %ld",
7006 7007
                     (ulong) m_dblen, (long) (ptr_dblen-(const uchar*)vpart), 
                     (ulong) m_tbllen, (long) (ptr_tbllen-(const uchar*)vpart),
7008
                     m_colcnt, (long) (ptr_colcnt-(const uchar*)vpart)));
7009

7010
  /* Allocate mem for all fields in one go. If fails, caught in is_valid() */
7011 7012 7013 7014 7015
  m_memory= (uchar*) my_multi_malloc(MYF(MY_WME),
                                     &m_dbnam, (uint) m_dblen + 1,
                                     &m_tblnam, (uint) m_tbllen + 1,
                                     &m_coltype, (uint) m_colcnt,
                                     NullS);
7016 7017 7018 7019

  if (m_memory)
  {
    /* Copy the different parts into their memory */
7020 7021
    strncpy(const_cast<char*>(m_dbnam), (const char*)ptr_dblen  + 1, m_dblen + 1);
    strncpy(const_cast<char*>(m_tblnam), (const char*)ptr_tbllen + 1, m_tbllen + 1);
7022
    memcpy(m_coltype, ptr_after_colcnt, m_colcnt);
7023 7024 7025 7026 7027 7028 7029

    ptr_after_colcnt= ptr_after_colcnt + m_colcnt;
    bytes_read= ptr_after_colcnt - (uchar *)buf;
    DBUG_PRINT("info", ("Bytes read: %d.\n", bytes_read));
    if (bytes_read < event_len)
    {
      m_field_metadata_size= net_field_length(&ptr_after_colcnt);
7030
      DBUG_ASSERT(m_field_metadata_size <= (m_colcnt * 2));
7031 7032 7033 7034 7035 7036 7037 7038 7039
      uint num_null_bytes= (m_colcnt + 7) / 8;
      m_meta_memory= (uchar *)my_multi_malloc(MYF(MY_WME),
                                     &m_null_bits, num_null_bytes,
                                     &m_field_metadata, m_field_metadata_size,
                                     NULL);
      memcpy(m_field_metadata, ptr_after_colcnt, m_field_metadata_size);
      ptr_after_colcnt= (uchar*)ptr_after_colcnt + m_field_metadata_size;
      memcpy(m_null_bits, ptr_after_colcnt, num_null_bytes);
    }
7040 7041 7042 7043 7044 7045 7046 7047
  }

  DBUG_VOID_RETURN;
}
#endif

Table_map_log_event::~Table_map_log_event()
{
7048
  my_free(m_meta_memory, MYF(MY_ALLOW_ZERO_PTR));
7049 7050 7051 7052 7053 7054 7055 7056 7057 7058 7059 7060 7061 7062 7063
  my_free(m_memory, MYF(MY_ALLOW_ZERO_PTR));
}

/*
  Return value is an error code, one of:

      -1     Failure to open table   [from open_tables()]
       0     Success
       1     No room for more tables [from set_table()]
       2     Out of memory           [from set_table()]
       3     Wrong table definition
       4     Daisy-chaining RBR with SBR not possible
 */

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
7064
int Table_map_log_event::do_apply_event(Relay_log_info const *rli)
7065
{
7066 7067 7068 7069
  RPL_TABLE_LIST *table_list;
  char *db_mem, *tname_mem;
  size_t dummy_len;
  void *memory;
7070
  DBUG_ENTER("Table_map_log_event::do_apply_event(Relay_log_info*)");
7071 7072 7073 7074 7075 7076 7077
  DBUG_ASSERT(rli->sql_thd == thd);

  /* Step the query id to mark what columns that are actually used. */
  pthread_mutex_lock(&LOCK_thread_count);
  thd->query_id= next_query_id();
  pthread_mutex_unlock(&LOCK_thread_count);

7078 7079 7080 7081 7082
  if (!(memory= my_multi_malloc(MYF(MY_WME),
                                &table_list, (uint) sizeof(RPL_TABLE_LIST),
                                &db_mem, (uint) NAME_LEN + 1,
                                &tname_mem, (uint) NAME_LEN + 1,
                                NullS)))
7083
    DBUG_RETURN(HA_ERR_OUT_OF_MEM);
7084 7085 7086 7087 7088 7089 7090 7091 7092 7093

  bzero(table_list, sizeof(*table_list));
  table_list->db = db_mem;
  table_list->alias= table_list->table_name = tname_mem;
  table_list->lock_type= TL_WRITE;
  table_list->next_global= table_list->next_local= 0;
  table_list->table_id= m_table_id;
  table_list->updating= 1;
  strmov(table_list->db, rpl_filter->get_rewrite_db(m_dbnam, &dummy_len));
  strmov(table_list->table_name, m_tblnam);
7094 7095 7096

  int error= 0;

7097 7098 7099
  if (!rpl_filter->db_ok(table_list->db) ||
      (rpl_filter->is_on() && !rpl_filter->tables_ok("", table_list)))
  {
7100
    my_free(memory, MYF(MY_WME));
7101 7102
  }
  else
7103
  {
7104 7105 7106 7107 7108
    /*
      open_tables() reads the contents of thd->lex, so they must be
      initialized, so we should call lex_start(); to be even safer, we
      call mysql_init_query() which does a more complete set of inits.
    */
7109 7110
    lex_start(thd);
    mysql_reset_thd_for_next_command(thd);
7111
    /*
7112 7113 7114
      Check if the slave is set to use SBR.  If so, it should switch
      to using RBR until the end of the "statement", i.e., next
      STMT_END_F or next error.
7115
    */
7116 7117
    if (!thd->current_stmt_binlog_row_based &&
        mysql_bin_log.is_open() && (thd->options & OPTION_BIN_LOG))
7118
    {
7119
      thd->set_current_stmt_binlog_row_based();
7120 7121 7122
    }

    /*
7123 7124 7125 7126 7127 7128 7129 7130 7131 7132 7133 7134 7135 7136 7137 7138
      Open the table if it is not already open and add the table to
      table map.  Note that for any table that should not be
      replicated, a filter is needed.

      The creation of a new TABLE_LIST is used to up-cast the
      table_list consisting of RPL_TABLE_LIST items. This will work
      since the only case where the argument to open_tables() is
      changed, is when thd->lex->query_tables == table_list, i.e.,
      when the statement requires prelocking. Since this is not
      executed when a statement is executed, this case will not occur.
      As a precaution, an assertion is added to ensure that the bad
      case is not a fact.

      Either way, the memory in the list is *never* released
      internally in the open_tables() function, hence we take a copy
      of the pointer to make sure that it's not lost.
7139 7140
    */
    uint count;
7141 7142 7143
    DBUG_ASSERT(thd->lex->query_tables != table_list);
    TABLE_LIST *tmp_table_list= table_list;
    if ((error= open_tables(thd, &tmp_table_list, &count, 0)))
7144
    {
7145
      if (thd->is_slave_error || thd->is_fatal_error)
7146
      {
7147 7148 7149 7150 7151
        /*
          Error reporting borrowed from Query_log_event with many excessive
          simplifications (we don't honour --slave-skip-errors)
        */
        uint actual_error= thd->net.last_errno;
7152 7153 7154 7155 7156
        rli->report(ERROR_LEVEL, actual_error,
                    "Error '%s' on opening table `%s`.`%s`",
                    (actual_error ? thd->net.last_error :
                     "unexpected success or fatal error"),
                    table_list->db, table_list->table_name);
7157
        thd->is_slave_error= 1;
7158
      }
7159
      goto err;
7160 7161
    }

7162
    m_table= table_list->table;
7163 7164 7165 7166 7167 7168 7169

    /*
      This will fail later otherwise, the 'in_use' field should be
      set to the current thread.
    */
    DBUG_ASSERT(m_table->in_use);

7170 7171 7172
    /*
      Use placement new to construct the table_def instance in the
      memory allocated for it inside table_list.
7173 7174 7175

      The memory allocated by the table_def structure (i.e., not the
      memory allocated *for* the table_def structure) is released
7176
      inside Relay_log_info::clear_tables_to_lock() by calling the
7177
      table_def destructor explicitly.
7178
    */
7179 7180
    new (&table_list->m_tabledef) table_def(m_coltype, m_colcnt, 
         m_field_metadata, m_field_metadata_size, m_null_bits);
7181
    table_list->m_tabledef_valid= TRUE;
7182 7183

    /*
7184
      We record in the slave's information that the table should be
mats@romeo.(none)'s avatar
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7185
      locked by linking the table into the list of tables to lock.
7186
    */
7187
    table_list->next_global= table_list->next_local= rli->tables_to_lock;
7188 7189
    const_cast<Relay_log_info*>(rli)->tables_to_lock= table_list;
    const_cast<Relay_log_info*>(rli)->tables_to_lock_count++;
7190
    /* 'memory' is freed in clear_tables_to_lock */
7191 7192
  }

7193
  DBUG_RETURN(error);
7194

7195
err:
7196
  my_free(memory, MYF(MY_WME));
7197 7198
  DBUG_RETURN(error);
}
7199

7200
Log_event::enum_skip_reason
7201
Table_map_log_event::do_shall_skip(Relay_log_info *rli)
7202 7203 7204 7205 7206
{
  /*
    If the slave skip counter is 1, then we should not start executing
    on the next event.
  */
7207
  return continue_group(rli);
7208 7209
}

7210
int Table_map_log_event::do_update_pos(Relay_log_info *rli)
7211 7212 7213 7214 7215
{
  rli->inc_event_relay_log_pos();
  return 0;
}

7216 7217 7218 7219 7220
#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */

#ifndef MYSQL_CLIENT
bool Table_map_log_event::write_data_header(IO_CACHE *file)
{
7221
  DBUG_ASSERT(m_table_id != ~0UL);
7222
  uchar buf[TABLE_MAP_HEADER_LEN];
7223 7224 7225 7226 7227 7228 7229 7230 7231 7232 7233 7234 7235 7236 7237 7238 7239 7240 7241
  DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master",
                  {
                    int4store(buf + 0, m_table_id);
                    int2store(buf + 4, m_flags);
                    return (my_b_safe_write(file, buf, 6));
                  });
  int6store(buf + TM_MAPID_OFFSET, (ulonglong)m_table_id);
  int2store(buf + TM_FLAGS_OFFSET, m_flags);
  return (my_b_safe_write(file, buf, TABLE_MAP_HEADER_LEN));
}

bool Table_map_log_event::write_data_body(IO_CACHE *file)
{
  DBUG_ASSERT(m_dbnam != NULL);
  DBUG_ASSERT(m_tblnam != NULL);
  /* We use only one byte per length for storage in event: */
  DBUG_ASSERT(m_dblen < 128);
  DBUG_ASSERT(m_tbllen < 128);

7242 7243
  uchar const dbuf[]= { (uchar) m_dblen };
  uchar const tbuf[]= { (uchar) m_tbllen };
7244

7245 7246 7247
  uchar cbuf[sizeof(m_colcnt)];
  uchar *const cbuf_end= net_store_length(cbuf, (size_t) m_colcnt);
  DBUG_ASSERT(static_cast<size_t>(cbuf_end - cbuf) <= sizeof(cbuf));
7248

7249 7250 7251 7252
  /*
    Store the size of the field metadata.
  */
  uchar mbuf[sizeof(m_field_metadata_size)];
7253
  uchar *const mbuf_end= net_store_length(mbuf, m_field_metadata_size);
7254

7255
  return (my_b_safe_write(file, dbuf,      sizeof(dbuf)) ||
7256
          my_b_safe_write(file, (const uchar*)m_dbnam,   m_dblen+1) ||
7257
          my_b_safe_write(file, tbuf,      sizeof(tbuf)) ||
7258 7259
          my_b_safe_write(file, (const uchar*)m_tblnam,  m_tbllen+1) ||
          my_b_safe_write(file, cbuf, (size_t) (cbuf_end - cbuf)) ||
7260 7261 7262 7263
          my_b_safe_write(file, m_coltype, m_colcnt) ||
          my_b_safe_write(file, mbuf, (size_t) (mbuf_end - mbuf)) ||
          my_b_safe_write(file, m_field_metadata, m_field_metadata_size),
          my_b_safe_write(file, m_null_bits, (m_colcnt + 7) / 8));
7264 7265 7266 7267 7268 7269 7270 7271 7272 7273
 }
#endif

#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)

/*
  Print some useful information for the SHOW BINARY LOG information
  field.
 */

7274
#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
7275 7276 7277
void Table_map_log_event::pack_info(Protocol *protocol)
{
    char buf[256];
7278
    size_t bytes= my_snprintf(buf, sizeof(buf),
7279
                                 "table_id: %lu (%s.%s)",
7280
                              m_table_id, m_dbnam, m_tblnam);
7281 7282
    protocol->store(buf, bytes, &my_charset_bin);
}
7283 7284
#endif

7285 7286 7287 7288 7289 7290 7291 7292 7293

#endif


#ifdef MYSQL_CLIENT
void Table_map_log_event::print(FILE *file, PRINT_EVENT_INFO *print_event_info)
{
  if (!print_event_info->short_form)
  {
7294 7295 7296 7297 7298
    print_header(&print_event_info->head_cache, print_event_info, TRUE);
    my_b_printf(&print_event_info->head_cache,
                "\tTable_map: `%s`.`%s` mapped to number %lu\n",
                m_dbnam, m_tblnam, m_table_id);
    print_base64(&print_event_info->body_cache, print_event_info, TRUE);
7299 7300 7301 7302 7303 7304 7305 7306 7307 7308 7309 7310 7311 7312 7313 7314 7315 7316 7317 7318 7319 7320 7321 7322 7323 7324 7325 7326 7327 7328 7329 7330 7331 7332
  }
}
#endif

/**************************************************************************
	Write_rows_log_event member functions
**************************************************************************/

/*
  Constructor used to build an event for writing to the binary log.
 */
#if !defined(MYSQL_CLIENT)
Write_rows_log_event::Write_rows_log_event(THD *thd_arg, TABLE *tbl_arg,
                                           ulong tid_arg,
                                           MY_BITMAP const *cols,
                                           bool is_transactional)
  : Rows_log_event(thd_arg, tbl_arg, tid_arg, cols, is_transactional)
{
}
#endif

/*
  Constructor used by slave to read the event from the binary log.
 */
#ifdef HAVE_REPLICATION
Write_rows_log_event::Write_rows_log_event(const char *buf, uint event_len,
                                           const Format_description_log_event
                                           *description_event)
: Rows_log_event(buf, event_len, WRITE_ROWS_EVENT, description_event)
{
}
#endif

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
7333 7334
int 
Write_rows_log_event::do_before_row_operations(const Slave_reporting_capability *const)
7335 7336 7337
{
  int error= 0;

7338 7339 7340
  /**
     todo: to introduce a property for the event (handler?) which forces
     applying the event in the replace (idempotent) fashion.
7341
  */
7342 7343 7344 7345 7346 7347 7348 7349 7350 7351 7352 7353 7354 7355 7356 7357 7358 7359 7360 7361 7362 7363 7364 7365 7366 7367 7368 7369 7370 7371 7372 7373 7374 7375 7376 7377 7378 7379 7380
  if (bit_is_set(slave_exec_mode, SLAVE_EXEC_MODE_IDEMPOTENT) == 1 ||
      m_table->s->db_type()->db_type == DB_TYPE_NDBCLUSTER)
  {
    /*
      We are using REPLACE semantics and not INSERT IGNORE semantics
      when writing rows, that is: new rows replace old rows.  We need to
      inform the storage engine that it should use this behaviour.
    */
    
    /* Tell the storage engine that we are using REPLACE semantics. */
    thd->lex->duplicates= DUP_REPLACE;
    
    /*
      Pretend we're executing a REPLACE command: this is needed for
      InnoDB and NDB Cluster since they are not (properly) checking the
      lex->duplicates flag.
    */
    thd->lex->sql_command= SQLCOM_REPLACE;
    /* 
       Do not raise the error flag in case of hitting to an unique attribute
    */
    m_table->file->extra(HA_EXTRA_IGNORE_DUP_KEY);
    /* 
       NDB specific: update from ndb master wrapped as Write_rows
       so that the event should be applied to replace slave's row
    */
    m_table->file->extra(HA_EXTRA_WRITE_CAN_REPLACE);
    /* 
       NDB specific: if update from ndb master wrapped as Write_rows
       does not find the row it's assumed idempotent binlog applying
       is taking place; don't raise the error.
    */
    m_table->file->extra(HA_EXTRA_IGNORE_NO_KEY);
    /*
      TODO: the cluster team (Tomas?) says that it's better if the engine knows
      how many rows are going to be inserted, then it can allocate needed memory
      from the start.
    */
  }
7381

7382
  m_table->file->ha_start_bulk_insert(0);
7383 7384 7385 7386 7387 7388 7389 7390 7391 7392 7393 7394 7395 7396 7397
  /*
    We need TIMESTAMP_NO_AUTO_SET otherwise ha_write_row() will not use fill
    any TIMESTAMP column with data from the row but instead will use
    the event's current time.
    As we replicate from TIMESTAMP to TIMESTAMP and slave has no extra
    columns, we know that all TIMESTAMP columns on slave will receive explicit
    data from the row, so TIMESTAMP_NO_AUTO_SET is ok.
    When we allow a table without TIMESTAMP to be replicated to a table having
    more columns including a TIMESTAMP column, or when we allow a TIMESTAMP
    column to be replicated into a BIGINT column and the slave's table has a
    TIMESTAMP column, then the slave's TIMESTAMP column will take its value
    from set_time() which we called earlier (consistent with SBR). And then in
    some cases we won't want TIMESTAMP_NO_AUTO_SET (will require some code to
    analyze if explicit data is provided for slave's TIMESTAMP columns).
  */
7398
  m_table->timestamp_field_type= TIMESTAMP_NO_AUTO_SET;
7399 7400 7401
  return error;
}

7402
int 
7403
Write_rows_log_event::do_after_row_operations(const Slave_reporting_capability *const,
7404
                                              int error)
7405
{
7406
  int local_error= 0;
7407 7408 7409 7410 7411 7412 7413 7414 7415 7416 7417 7418 7419
  if (bit_is_set(slave_exec_mode, SLAVE_EXEC_MODE_IDEMPOTENT) == 1 ||
      m_table->s->db_type()->db_type == DB_TYPE_NDBCLUSTER)
  {
    m_table->file->extra(HA_EXTRA_NO_IGNORE_DUP_KEY);
    m_table->file->extra(HA_EXTRA_WRITE_CANNOT_REPLACE);
    /*
      resetting the extra with 
      table->file->extra(HA_EXTRA_NO_IGNORE_NO_KEY); 
      fires bug#27077
      explanation: file->reset() performs this duty
      ultimately. Still todo: fix
    */
  }
7420
  if ((local_error= m_table->file->ha_end_bulk_insert()))
7421
  {
7422
    m_table->file->print_error(local_error, MYF(0));
7423 7424
  }
  return error? error : local_error;
7425 7426
}

7427
#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
7428 7429 7430 7431 7432 7433 7434 7435 7436 7437 7438 7439 7440

/*
  Check if there are more UNIQUE keys after the given key.
*/
static int
last_uniq_key(TABLE *table, uint keyno)
{
  while (++keyno < table->s->keys)
    if (table->key_info[keyno].flags & HA_NOSAME)
      return 0;
  return 1;
}

7441 7442 7443 7444 7445 7446 7447 7448 7449 7450 7451 7452 7453 7454 7455 7456 7457 7458 7459 7460 7461 7462 7463 7464 7465
/**
   Check if an error is a duplicate key error.

   This function is used to check if an error code is one of the
   duplicate key error, i.e., and error code for which it is sensible
   to do a <code>get_dup_key()</code> to retrieve the duplicate key.

   @param errcode The error code to check.

   @return <code>true</code> if the error code is such that
   <code>get_dup_key()</code> will return true, <code>false</code>
   otherwise.
 */
bool
is_duplicate_key_error(int errcode)
{
  switch (errcode)
  {
  case HA_ERR_FOUND_DUPP_KEY:
  case HA_ERR_FOUND_DUPP_UNIQUE:
    return true;
  }
  return false;
}

7466 7467
/**
  Write the current row into event's table.
7468

7469 7470 7471 7472 7473
  The row is located in the row buffer, pointed by @c m_curr_row member.
  Number of columns of the row is stored in @c m_width member (it can be 
  different from the number of columns in the table to which we insert). 
  Bitmap @c m_cols indicates which columns are present in the row. It is assumed 
  that event's table is already open and pointed by @c m_table.
7474

7475 7476 7477 7478 7479
  If the same record already exists in the table it can be either overwritten 
  or an error is reported depending on the value of @c overwrite flag 
  (error reporting not yet implemented). Note that the matching record can be
  different from the row we insert if we use primary keys to identify records in
  the table.
7480

7481 7482 7483 7484
  The row to be inserted can contain values only for selected columns. The 
  missing columns are filled with default values using @c prepare_record() 
  function. If a matching record is found in the table and @c overwritte is
  true, the missing columns are taken from it.
7485

7486 7487 7488 7489 7490 7491 7492 7493 7494 7495 7496 7497 7498 7499 7500 7501
  @param  rli   Relay log info (needed for row unpacking).
  @param  overwrite  
                Shall we overwrite if the row already exists or signal 
                error (currently ignored).

  @returns Error code on failure, 0 on success.

  This method, if successful, sets @c m_curr_row_end pointer to point at the
  next row in the rows buffer. This is done when unpacking the row to be 
  inserted.

  @note If a matching record is found, it is either updated using 
  @c ha_update_row() or first deleted and then new record written.
*/ 

int
7502
Rows_log_event::write_row(const Relay_log_info *const rli,
7503
                          const bool overwrite)
7504
{
7505 7506
  DBUG_ENTER("write_row");
  DBUG_ASSERT(m_table != NULL && thd != NULL);
7507

7508
  TABLE *table= m_table;  // pointer to event's table
7509 7510 7511 7512
  int error;
  int keynum;
  auto_afree_ptr<char> key(NULL);

7513 7514 7515 7516 7517 7518 7519 7520 7521
  /* fill table->record[0] with default values */

  if ((error= prepare_record(rli, table, m_width,
                             TRUE /* check if columns have def. values */)))
    DBUG_RETURN(error);
  
  /* unpack row into table->record[0] */
  error= unpack_current_row(rli); // TODO: how to handle errors?

7522
#ifndef DBUG_OFF
7523
  DBUG_DUMP("record[0]", table->record[0], table->s->reclength);
7524 7525 7526 7527
  DBUG_PRINT_BITSET("debug", "write_set = %s", table->write_set);
  DBUG_PRINT_BITSET("debug", "read_set = %s", table->read_set);
#endif

7528 7529 7530 7531 7532 7533 7534 7535
  /* 
    Try to write record. If a corresponding record already exists in the table,
    we try to change it using ha_update_row() if possible. Otherwise we delete
    it and repeat the whole process again. 

    TODO: Add safety measures against infinite looping. 
   */

7536 7537
  while ((error= table->file->ha_write_row(table->record[0])))
  {
7538 7539 7540 7541
    if (error == HA_ERR_LOCK_DEADLOCK ||
        error == HA_ERR_LOCK_WAIT_TIMEOUT ||
        (keynum= table->file->get_dup_key(error)) < 0 ||
        !overwrite)
7542
    {
7543
      DBUG_PRINT("info",("get_dup_key returns %d)", keynum));
7544
      /*
7545 7546 7547
        Deadlock, waiting for lock or just an error from the handler
        such as HA_ERR_FOUND_DUPP_KEY when overwrite is false.
        Retrieval of the duplicate key number may fail
7548 7549 7550
        - either because the error was not "duplicate key" error
        - or because the information which key is not available
      */
7551
      table->file->print_error(error, MYF(0));
7552
      DBUG_RETURN(error);
7553 7554 7555 7556 7557 7558 7559 7560 7561 7562 7563
    }
    /*
       We need to retrieve the old row into record[1] to be able to
       either update or delete the offending record.  We either:

       - use rnd_pos() with a row-id (available as dupp_row) to the
         offending row, if that is possible (MyISAM and Blackhole), or else

       - use index_read_idx() with the key that is duplicated, to
         retrieve the offending row.
     */
7564
    if (table->file->ha_table_flags() & HA_DUPLICATE_POS)
7565
    {
7566
      DBUG_PRINT("info",("Locating offending record using rnd_pos()"));
7567
      error= table->file->rnd_pos(table->record[1], table->file->dup_ref);
7568
      if (error)
7569
      {
7570
        DBUG_PRINT("info",("rnd_pos() returns error %d",error));
7571
        table->file->print_error(error, MYF(0));
7572
        DBUG_RETURN(error);
7573
      }
7574 7575 7576
    }
    else
    {
7577 7578
      DBUG_PRINT("info",("Locating offending record using index_read_idx()"));

7579 7580
      if (table->file->extra(HA_EXTRA_FLUSH_CACHE))
      {
7581
        DBUG_PRINT("info",("Error when setting HA_EXTRA_FLUSH_CACHE"));
7582
        DBUG_RETURN(my_errno);
7583 7584 7585 7586 7587 7588
      }

      if (key.get() == NULL)
      {
        key.assign(static_cast<char*>(my_alloca(table->s->max_unique_length)));
        if (key.get() == NULL)
7589 7590
        {
          DBUG_PRINT("info",("Can't allocate key buffer"));
7591
          DBUG_RETURN(ENOMEM);
7592
        }
7593 7594
      }

7595 7596
      key_copy((uchar*)key.get(), table->record[0], table->key_info + keynum,
               0);
7597 7598 7599 7600
      error= table->file->index_read_idx_map(table->record[1], keynum,
                                             (const uchar*)key.get(),
                                             HA_WHOLE_KEY,
                                             HA_READ_KEY_EXACT);
7601
      if (error)
7602
      {
7603
        DBUG_PRINT("info",("index_read_idx() returns error %d",error)); 
7604
        table->file->print_error(error, MYF(0));
7605
        DBUG_RETURN(error);
7606
      }
7607 7608 7609
    }

    /*
7610
       Now, record[1] should contain the offending row.  That
7611 7612
       will enable us to update it or, alternatively, delete it (so
       that we can insert the new row afterwards).
7613
     */
7614

7615 7616 7617
    /*
      If row is incomplete we will use the record found to fill 
      missing columns.  
7618
    */
7619 7620 7621 7622 7623 7624 7625 7626 7627 7628 7629
    if (!get_flags(COMPLETE_ROWS_F))
    {
      restore_record(table,record[1]);
      error= unpack_current_row(rli);
    }

#ifndef DBUG_OFF
    DBUG_PRINT("debug",("preparing for update: before and after image"));
    DBUG_DUMP("record[1] (before)", table->record[1], table->s->reclength);
    DBUG_DUMP("record[0] (after)", table->record[0], table->s->reclength);
#endif
7630

7631
    /*
7632 7633 7634 7635 7636 7637 7638 7639 7640 7641 7642 7643 7644 7645 7646 7647 7648
       REPLACE is defined as either INSERT or DELETE + INSERT.  If
       possible, we can replace it with an UPDATE, but that will not
       work on InnoDB if FOREIGN KEY checks are necessary.

       I (Matz) am not sure of the reason for the last_uniq_key()
       check as, but I'm guessing that it's something along the
       following lines.

       Suppose that we got the duplicate key to be a key that is not
       the last unique key for the table and we perform an update:
       then there might be another key for which the unique check will
       fail, so we're better off just deleting the row and inserting
       the correct row.
     */
    if (last_uniq_key(table, keynum) &&
        !table->file->referenced_by_foreign_key())
    {
7649
      DBUG_PRINT("info",("Updating row using ha_update_row()"));
7650 7651
      error=table->file->ha_update_row(table->record[1],
                                       table->record[0]);
7652 7653 7654 7655 7656
      switch (error) {
                
      case HA_ERR_RECORD_IS_THE_SAME:
        DBUG_PRINT("info",("ignoring HA_ERR_RECORD_IS_THE_SAME error from"
                           " ha_update_row()"));
7657
        error= 0;
7658 7659 7660 7661 7662 7663 7664 7665 7666
      
      case 0:
        break;
        
      default:    
        DBUG_PRINT("info",("ha_update_row() returns error %d",error));
        table->file->print_error(error, MYF(0));
      }
      
7667
      DBUG_RETURN(error);
7668 7669 7670
    }
    else
    {
7671
      DBUG_PRINT("info",("Deleting offending row and trying to write new one again"));
7672
      if ((error= table->file->ha_delete_row(table->record[1])))
7673
      {
7674
        DBUG_PRINT("info",("ha_delete_row() returns error %d",error));
7675
        table->file->print_error(error, MYF(0));
7676
        DBUG_RETURN(error);
7677
      }
7678 7679 7680
      /* Will retry ha_write_row() with the offending row removed. */
    }
  }
7681

7682
  DBUG_RETURN(error);
7683 7684
}

7685 7686 7687
#endif

int 
7688
Write_rows_log_event::do_exec_row(const Relay_log_info *const rli)
7689
{
7690
  DBUG_ASSERT(m_table != NULL);
7691 7692 7693 7694
  int error=
    write_row(rli,        /* if 1 then overwrite */
              bit_is_set(slave_exec_mode, SLAVE_EXEC_MODE_IDEMPOTENT) == 1);
    
7695 7696
  if (error && !thd->net.last_errno)
    thd->net.last_errno= error;
7697
  
7698
  return error; 
7699
}
7700

7701 7702 7703 7704 7705
#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */

#ifdef MYSQL_CLIENT
void Write_rows_log_event::print(FILE *file, PRINT_EVENT_INFO* print_event_info)
{
7706
  Rows_log_event::print_helper(file, print_event_info, "Write_rows");
7707 7708 7709 7710 7711 7712 7713 7714
}
#endif

/**************************************************************************
	Delete_rows_log_event member functions
**************************************************************************/

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
7715 7716 7717 7718 7719 7720
/*
  Compares table->record[0] and table->record[1]

  Returns TRUE if different.
*/
static bool record_compare(TABLE *table)
7721
{
7722 7723 7724 7725 7726 7727 7728 7729 7730 7731 7732 7733
  /*
    Need to set the X bit and the filler bits in both records since
    there are engines that do not set it correctly.

    In addition, since MyISAM checks that one hasn't tampered with the
    record, it is necessary to restore the old bytes into the record
    after doing the comparison.

    TODO[record format ndb]: Remove it once NDB returns correct
    records. Check that the other engines also return correct records.
   */

7734 7735 7736
  DBUG_DUMP("record[0]", table->record[0], table->s->reclength);
  DBUG_DUMP("record[1]", table->record[1], table->s->reclength);

7737
  bool result= FALSE;
7738
  uchar saved_x[2], saved_filler[2];
7739 7740 7741 7742 7743 7744 7745 7746 7747 7748 7749 7750 7751

  if (table->s->null_bytes > 0)
  {
    for (int i = 0 ; i < 2 ; ++i)
    {
      saved_x[i]= table->record[i][0];
      saved_filler[i]= table->record[i][table->s->null_bytes - 1];
      table->record[i][0]|= 1U;
      table->record[i][table->s->null_bytes - 1]|=
        256U - (1U << table->s->last_null_bit_pos);
    }
  }

7752
  if (table->s->blob_fields + table->s->varchar_fields == 0)
7753 7754 7755 7756 7757
  {
    result= cmp_record(table,record[1]);
    goto record_compare_exit;
  }

7758 7759 7760 7761
  /* Compare null bits */
  if (memcmp(table->null_flags,
	     table->null_flags+table->s->rec_buff_length,
	     table->s->null_bytes))
7762 7763 7764 7765 7766
  {
    result= TRUE;				// Diff in NULL value
    goto record_compare_exit;
  }

7767 7768
  /* Compare updated fields */
  for (Field **ptr=table->field ; *ptr ; ptr++)
7769
  {
7770
    if ((*ptr)->cmp_binary_offset(table->s->rec_buff_length))
7771 7772 7773 7774
    {
      result= TRUE;
      goto record_compare_exit;
    }
7775
  }
7776 7777 7778 7779 7780 7781 7782 7783 7784 7785 7786 7787 7788 7789 7790

record_compare_exit:
  /*
    Restore the saved bytes.

    TODO[record format ndb]: Remove this code once NDB returns the
    correct record format.
  */
  if (table->s->null_bytes > 0)
  {
    for (int i = 0 ; i < 2 ; ++i)
    {
      table->record[i][0]= saved_x[i];
      table->record[i][table->s->null_bytes - 1]= saved_filler[i];
    }
7791
  }
7792 7793

  return result;
7794 7795
}

7796 7797
/**
  Locate the current row in event's table.
7798

7799 7800 7801 7802
  The current row is pointed by @c m_curr_row. Member @c m_width tells how many 
  columns are there in the row (this can be differnet from the number of columns 
  in the table). It is assumed that event's table is already open and pointed 
  by @c m_table.
7803

7804 7805 7806
  If a corresponding record is found in the table it is stored in 
  @c m_table->record[0]. Note that when record is located based on a primary 
  key, it is possible that the record found differs from the row being located.
7807

7808 7809 7810 7811 7812
  If no key is specified or table does not have keys, a table scan is used to 
  find the row. In that case the row should be complete and contain values for
  all columns. However, it can still be shorter than the table, i.e. the table 
  can contain extra columns not present in the row. It is also possible that 
  the table has fewer columns than the row being located. 
7813

7814 7815 7816 7817
  @returns Error code on failure, 0 on success. 
  
  @post In case of success @c m_table->record[0] contains the record found. 
  Also, the internal "cursor" of the table is positioned at the record found.
7818

7819 7820
  @note If the engine allows random access of the records, a combination of
  @c position() and @c rnd_pos() will be used. 
7821
 */
7822

7823
int Rows_log_event::find_row(const Relay_log_info *rli)
7824
{
7825
  DBUG_ENTER("Rows_log_event::find_row");
7826 7827

  DBUG_ASSERT(m_table && m_table->in_use != NULL);
7828

7829 7830
  TABLE *table= m_table;
  int error;
7831

7832
  /* unpack row - missing fields get default values */
7833

7834 7835 7836 7837 7838 7839
  // TODO: shall we check and report errors here?
  prepare_record(NULL,table,m_width,FALSE /* don't check errors */); 
  error= unpack_current_row(rli); 

#ifndef DBUG_OFF
  DBUG_PRINT("info",("looking for the following record"));
7840
  DBUG_DUMP("record[0]", table->record[0], table->s->reclength);
7841
#endif
7842

7843 7844
  if ((table->file->ha_table_flags() & HA_PRIMARY_KEY_REQUIRED_FOR_POSITION) &&
      table->s->primary_key < MAX_KEY)
7845 7846 7847 7848 7849 7850
  {
    /*
      Use a more efficient method to fetch the record given by
      table->record[0] if the engine allows it.  We first compute a
      row reference using the position() member function (it will be
      stored in table->file->ref) and the use rnd_pos() to position
7851
      the "cursor" (i.e., record[0] in this case) at the correct row.
7852 7853 7854 7855 7856 7857 7858 7859 7860 7861 7862

      TODO: Add a check that the correct record has been fetched by
      comparing with the original record. Take into account that the
      record on the master and slave can be of different
      length. Something along these lines should work:

      ADD>>>  store_record(table,record[1]);
              int error= table->file->rnd_pos(table->record[0], table->file->ref);
      ADD>>>  DBUG_ASSERT(memcmp(table->record[1], table->record[0],
                                 table->s->reclength) == 0);

7863
    */
7864
    DBUG_PRINT("info",("locating record using primary key (position)"));
7865
    int error= table->file->rnd_pos_by_record(table->record[0]);
7866 7867 7868 7869 7870
    if (error)
    {
      DBUG_PRINT("info",("rnd_pos returns error %d",error));
      table->file->print_error(error, MYF(0));
    }
7871
    DBUG_RETURN(error);
7872 7873
  }

7874
  // We can't use position() - try other methods.
7875 7876 7877 7878 7879
  
  /* 
    We need to retrieve all fields
    TODO: Move this out from this function to main loop 
   */
7880
  table->use_all_columns();
tomas@poseidon.ndb.mysql.com's avatar
tomas@poseidon.ndb.mysql.com committed
7881

7882 7883 7884 7885 7886 7887
  /*
    Save copy of the record in table->record[1]. It might be needed 
    later if linear search is used to find exact match.
   */ 
  store_record(table,record[1]);    

7888 7889
  if (table->s->keys > 0)
  {
7890 7891
    DBUG_PRINT("info",("locating record using primary key (index_read)"));

7892
    /* We have a key: search the table using the index */
7893
    if (!table->file->inited && (error= table->file->ha_index_init(0, FALSE)))
7894 7895 7896
    {
      DBUG_PRINT("info",("ha_index_init returns error %d",error));
      table->file->print_error(error, MYF(0));
7897
      DBUG_RETURN(error);
7898
    }
7899

7900 7901 7902 7903 7904 7905 7906 7907 7908
    /* Fill key data for the row */

    DBUG_ASSERT(m_key);
    key_copy(m_key, table->record[0], table->key_info, 0);

    /*
      Don't print debug messages when running valgrind since they can
      trigger false warnings.
     */
7909
#ifndef HAVE_purify
7910
    DBUG_DUMP("key data", m_key, table->key_info->key_length);
7911 7912
#endif

7913 7914 7915 7916 7917 7918
    /*
      We need to set the null bytes to ensure that the filler bit are
      all set when returning.  There are storage engines that just set
      the necessary bits on the bytes and don't set the filler bits
      correctly.
    */
7919 7920
    my_ptrdiff_t const pos=
      table->s->null_bytes > 0 ? table->s->null_bytes - 1 : 0;
7921 7922 7923
    table->record[0][pos]= 0xFF;
    
    if ((error= table->file->index_read_map(table->record[0], m_key, 
7924
                                            HA_WHOLE_KEY,
7925
                                            HA_READ_KEY_EXACT)))
7926
    {
7927
      DBUG_PRINT("info",("no record matching the key found in the table"));
7928
      table->file->print_error(error, MYF(0));
7929
      table->file->ha_index_end();
7930 7931 7932
      DBUG_RETURN(error);
    }

7933 7934 7935 7936 7937
  /*
    Don't print debug messages when running valgrind since they can
    trigger false warnings.
   */
#ifndef HAVE_purify
7938 7939
    DBUG_PRINT("info",("found first matching record")); 
    DBUG_DUMP("record[0]", table->record[0], table->s->reclength);
7940
#endif
7941 7942 7943 7944 7945 7946 7947 7948 7949 7950 7951 7952 7953
    /*
      Below is a minor "optimization".  If the key (i.e., key number
      0) has the HA_NOSAME flag set, we know that we have found the
      correct record (since there can be no duplicates); otherwise, we
      have to compare the record with the one found to see if it is
      the correct one.

      CAVEAT! This behaviour is essential for the replication of,
      e.g., the mysql.proc table since the correct record *shall* be
      found using the primary key *only*.  There shall be no
      comparison of non-PK columns to decide if the correct record is
      found.  I can see no scenario where it would be incorrect to
      chose the row to change only using a PK or an UNNI.
7954
    */
7955
    if (table->key_info->flags & HA_NOSAME)
7956 7957
    {
      table->file->ha_index_end();
7958
      DBUG_RETURN(0);
7959
    }
7960

7961 7962
    /*
      In case key is not unique, we still have to iterate over records found
7963 7964
      and find the one which is identical to the row given. A copy of the 
      record we are looking for is stored in record[1].
7965 7966 7967
     */ 
    DBUG_PRINT("info",("non-unique index, scanning it to find matching record")); 

7968
    while (record_compare(table))
7969
    {
7970 7971 7972 7973 7974
      /*
        We need to set the null bytes to ensure that the filler bit
        are all set when returning.  There are storage engines that
        just set the necessary bits on the bytes and don't set the
        filler bits correctly.
7975 7976 7977

        TODO[record format ndb]: Remove this code once NDB returns the
        correct record format.
7978
      */
7979 7980
      if (table->s->null_bytes > 0)
      {
7981
        table->record[0][table->s->null_bytes - 1]|=
7982 7983 7984
          256U - (1U << table->s->last_null_bit_pos);
      }

7985
      if ((error= table->file->index_next(table->record[0])))
7986
      {
7987 7988
        DBUG_PRINT("info",("no record matching the given row found"));
        table->file->print_error(error, MYF(0));
7989
        table->file->ha_index_end();
7990
        DBUG_RETURN(error);
7991 7992
      }
    }
7993 7994 7995 7996 7997

    /*
      Have to restart the scan to be able to fetch the next row.
    */
    table->file->ha_index_end();
7998 7999 8000
  }
  else
  {
8001 8002
    DBUG_PRINT("info",("locating record using table scan (rnd_next)"));

8003
    int restart_count= 0; // Number of times scanning has restarted from top
8004 8005 8006

    /* We don't have a key: search the table using rnd_next() */
    if ((error= table->file->ha_rnd_init(1)))
8007 8008 8009 8010 8011 8012
    {
      DBUG_PRINT("info",("error initializing table scan"
                         " (ha_rnd_init returns %d)",error));
      table->file->print_error(error, MYF(0));
      DBUG_RETURN(error);
    }
8013 8014

    /* Continue until we find the right record or have made a full loop */
8015 8016
    do
    {
8017
      error= table->file->rnd_next(table->record[0]);
8018

8019
      switch (error) {
8020

8021 8022
      case 0:
      case HA_ERR_RECORD_DELETED:
8023
        break;
8024 8025

      case HA_ERR_END_OF_FILE:
8026 8027 8028
        if (++restart_count < 2)
          table->file->ha_rnd_init(1);
        break;
8029 8030

      default:
8031 8032 8033
        DBUG_PRINT("info", ("Failed to get next record"
                            " (rnd_next returns %d)",error));
        table->file->print_error(error, MYF(0));
8034
        table->file->ha_rnd_end();
8035
        DBUG_RETURN(error);
8036 8037
      }
    }
8038
    while (restart_count < 2 && record_compare(table));
8039 8040 8041 8042 8043
    
    /* 
      Note: above record_compare will take into accout all record fields 
      which might be incorrect in case a partial row was given in the event
     */
8044

8045 8046 8047
    /*
      Have to restart the scan to be able to fetch the next row.
    */
8048 8049
    if (restart_count == 2)
      DBUG_PRINT("info", ("Record not found"));
8050 8051
    else
      DBUG_DUMP("record found", table->record[0], table->s->reclength);
8052 8053
    table->file->ha_rnd_end();

8054
    DBUG_ASSERT(error == HA_ERR_END_OF_FILE || error == HA_ERR_RECORD_DELETED || error == 0);
8055 8056 8057 8058 8059
    DBUG_RETURN(error);
  }

  DBUG_RETURN(0);
}
8060

8061 8062 8063 8064 8065 8066 8067 8068 8069 8070 8071 8072 8073 8074 8075 8076 8077 8078 8079 8080 8081 8082 8083 8084 8085 8086 8087 8088 8089
#endif

/*
  Constructor used to build an event for writing to the binary log.
 */

#ifndef MYSQL_CLIENT
Delete_rows_log_event::Delete_rows_log_event(THD *thd_arg, TABLE *tbl_arg,
                                             ulong tid, MY_BITMAP const *cols,
                                             bool is_transactional)
  : Rows_log_event(thd_arg, tbl_arg, tid, cols, is_transactional)
{
}
#endif /* #if !defined(MYSQL_CLIENT) */

/*
  Constructor used by slave to read the event from the binary log.
 */
#ifdef HAVE_REPLICATION
Delete_rows_log_event::Delete_rows_log_event(const char *buf, uint event_len,
                                             const Format_description_log_event
                                             *description_event)
  : Rows_log_event(buf, event_len, DELETE_ROWS_EVENT, description_event)
{
}
#endif

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)

8090 8091 8092 8093 8094
int 
Delete_rows_log_event::do_before_row_operations(const Slave_reporting_capability *const)
{
  if ((m_table->file->ha_table_flags() & HA_PRIMARY_KEY_REQUIRED_FOR_POSITION) &&
      m_table->s->primary_key < MAX_KEY)
8095 8096
  {
    /*
8097
      We don't need to allocate any memory for m_key since it is not used.
8098 8099 8100 8101
    */
    return 0;
  }

8102
  if (m_table->s->keys > 0)
8103
  {
8104 8105 8106 8107
    // Allocate buffer for key searches
    m_key= (uchar*)my_malloc(m_table->key_info->key_length, MYF(MY_WME));
    if (!m_key)
      return HA_ERR_OUT_OF_MEM;
8108
  }
8109
  return 0;
8110 8111
}

8112 8113 8114
int 
Delete_rows_log_event::do_after_row_operations(const Slave_reporting_capability *const, 
                                               int error)
8115 8116
{
  /*error= ToDo:find out what this should really be, this triggers close_scan in nbd, returning error?*/
8117 8118
  m_table->file->ha_index_or_rnd_end();
  my_free(m_key, MYF(MY_ALLOW_ZERO_PTR));
8119
  m_key= NULL;
8120 8121 8122 8123

  return error;
}

8124
int Delete_rows_log_event::do_exec_row(const Relay_log_info *const rli)
8125
{
8126
  int error;
8127
  DBUG_ASSERT(m_table != NULL);
8128

8129
  if (!(error= find_row(rli))) 
8130 8131
  { 
    /*
8132
      Delete the record found, located in record[0]
8133
    */
8134
    error= m_table->file->ha_delete_row(m_table->record[0]);
8135
  }
8136 8137 8138 8139 8140 8141 8142 8143 8144
  return error;
}

#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */

#ifdef MYSQL_CLIENT
void Delete_rows_log_event::print(FILE *file,
                                  PRINT_EVENT_INFO* print_event_info)
{
8145
  Rows_log_event::print_helper(file, print_event_info, "Delete_rows");
8146 8147 8148 8149 8150 8151 8152 8153 8154 8155 8156 8157 8158
}
#endif


/**************************************************************************
	Update_rows_log_event member functions
**************************************************************************/

/*
  Constructor used to build an event for writing to the binary log.
 */
#if !defined(MYSQL_CLIENT)
Update_rows_log_event::Update_rows_log_event(THD *thd_arg, TABLE *tbl_arg,
8159 8160 8161 8162 8163 8164 8165 8166 8167 8168 8169 8170
                                             ulong tid,
                                             MY_BITMAP const *cols_bi,
                                             MY_BITMAP const *cols_ai,
                                             bool is_transactional)
: Rows_log_event(thd_arg, tbl_arg, tid, cols_bi, is_transactional)
{
  init(cols_ai);
}

Update_rows_log_event::Update_rows_log_event(THD *thd_arg, TABLE *tbl_arg,
                                             ulong tid,
                                             MY_BITMAP const *cols,
8171 8172 8173
                                             bool is_transactional)
: Rows_log_event(thd_arg, tbl_arg, tid, cols, is_transactional)
{
8174 8175 8176 8177 8178
  init(cols);
}

void Update_rows_log_event::init(MY_BITMAP const *cols)
{
8179
  /* if bitmap_init fails, caught in is_valid() */
8180 8181
  if (likely(!bitmap_init(&m_cols_ai,
                          m_width <= sizeof(m_bitbuf_ai)*8 ? m_bitbuf_ai : NULL,
8182
                          m_width,
8183 8184 8185 8186
                          false)))
  {
    /* Cols can be zero if this is a dummy binrows event */
    if (likely(cols != NULL))
8187
    {
8188
      memcpy(m_cols_ai.bitmap, cols->bitmap, no_bytes_in_map(cols));
8189 8190
      create_last_word_mask(&m_cols_ai);
    }
8191
  }
8192 8193 8194
}
#endif /* !defined(MYSQL_CLIENT) */

8195 8196 8197 8198 8199 8200 8201 8202 8203

Update_rows_log_event::~Update_rows_log_event()
{
  if (m_cols_ai.bitmap == m_bitbuf_ai) // no my_malloc happened
    m_cols_ai.bitmap= 0; // so no my_free in bitmap_free
  bitmap_free(&m_cols_ai); // To pair with bitmap_init().
}


8204 8205 8206 8207 8208 8209 8210 8211 8212 8213 8214 8215 8216 8217 8218
/*
  Constructor used by slave to read the event from the binary log.
 */
#ifdef HAVE_REPLICATION
Update_rows_log_event::Update_rows_log_event(const char *buf, uint event_len,
                                             const
                                             Format_description_log_event
                                             *description_event)
  : Rows_log_event(buf, event_len, UPDATE_ROWS_EVENT, description_event)
{
}
#endif

#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)

8219 8220 8221 8222
int 
Update_rows_log_event::do_before_row_operations(const Slave_reporting_capability *const)
{
  if (m_table->s->keys > 0)
8223
  {
8224 8225 8226 8227
    // Allocate buffer for key searches
    m_key= (uchar*)my_malloc(m_table->key_info->key_length, MYF(MY_WME));
    if (!m_key)
      return HA_ERR_OUT_OF_MEM;
8228 8229
  }

8230
  m_table->timestamp_field_type= TIMESTAMP_NO_AUTO_SET;
8231

8232
  return 0;
8233 8234
}

8235 8236 8237
int 
Update_rows_log_event::do_after_row_operations(const Slave_reporting_capability *const, 
                                               int error)
8238
{
8239 8240 8241
  /*error= ToDo:find out what this should really be, this triggers close_scan in nbd, returning error?*/
  m_table->file->ha_index_or_rnd_end();
  my_free(m_key, MYF(MY_ALLOW_ZERO_PTR)); // Free for multi_malloc
8242
  m_key= NULL;
8243 8244 8245 8246

  return error;
}

8247
int 
8248
Update_rows_log_event::do_exec_row(const Relay_log_info *const rli)
8249
{
8250
  DBUG_ASSERT(m_table != NULL);
8251

8252 8253
  int error= find_row(rli); 
  if (error)
8254 8255 8256 8257 8258 8259 8260
  {
    /*
      We need to read the second image in the event of error to be
      able to skip to the next pair of updates
    */
    m_curr_row= m_curr_row_end;
    unpack_current_row(rli);
8261
    return error;
8262
  }
8263

8264
  /*
8265
    This is the situation after locating BI:
8266

8267 8268 8269
    ===|=== before image ====|=== after image ===|===
       ^                     ^
       m_curr_row            m_curr_row_end
8270

8271 8272 8273
    BI found in the table is stored in record[0]. We copy it to record[1]
    and unpack AI to record[0].
   */
8274

8275
  store_record(m_table,record[1]);
8276

8277 8278
  m_curr_row= m_curr_row_end;
  error= unpack_current_row(rli); // this also updates m_curr_row_end
8279

8280
  /*
8281
    Now we have the right row to update.  The old row (the one we're
8282
    looking for) is in record[1] and the new row is in record[0].
8283
  */
8284 8285 8286 8287 8288 8289 8290 8291 8292 8293 8294
#ifndef HAVE_purify
  /*
    Don't print debug messages when running valgrind since they can
    trigger false warnings.
   */
  DBUG_PRINT("info",("Updating row in table"));
  DBUG_DUMP("old record", m_table->record[1], m_table->s->reclength);
  DBUG_DUMP("new values", m_table->record[0], m_table->s->reclength);
#endif

  error= m_table->file->ha_update_row(m_table->record[1], m_table->record[0]);
8295 8296
  if (error == HA_ERR_RECORD_IS_THE_SAME)
    error= 0;
8297 8298 8299

  return error;
}
8300

8301 8302 8303 8304 8305 8306
#endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */

#ifdef MYSQL_CLIENT
void Update_rows_log_event::print(FILE *file,
				  PRINT_EVENT_INFO* print_event_info)
{
8307
  Rows_log_event::print_helper(file, print_event_info, "Update_rows");
8308 8309 8310
}
#endif

8311 8312 8313 8314 8315 8316 8317 8318 8319 8320 8321 8322 8323 8324 8325 8326 8327

Incident_log_event::Incident_log_event(const char *buf, uint event_len,
                                       const Format_description_log_event *descr_event)
  : Log_event(buf, descr_event)
{
  DBUG_ENTER("Incident_log_event::Incident_log_event");
  uint8 const common_header_len=
    descr_event->common_header_len;
  uint8 const post_header_len=
    descr_event->post_header_len[INCIDENT_EVENT-1];

  DBUG_PRINT("info",("event_len: %u; common_header_len: %d; post_header_len: %d",
                     event_len, common_header_len, post_header_len));

  m_incident= static_cast<Incident>(uint2korr(buf + common_header_len));
  char const *ptr= buf + common_header_len + post_header_len;
  char const *const str_end= buf + event_len;
8328 8329
  uint8 len= 0;                   // Assignment to keep compiler happy
  const char *str= NULL;          // Assignment to keep compiler happy
8330 8331 8332 8333 8334 8335 8336 8337 8338 8339 8340 8341 8342 8343 8344 8345 8346 8347 8348 8349 8350 8351 8352 8353
  read_str(&ptr, str_end, &str, &len);
  m_message.str= const_cast<char*>(str);
  m_message.length= len;
  DBUG_PRINT("info", ("m_incident: %d", m_incident));
  DBUG_VOID_RETURN;
}


Incident_log_event::~Incident_log_event()
{
}


const char *
Incident_log_event::description() const
{
  static const char *const description[]= {
    "NOTHING",                                  // Not used
    "LOST_EVENTS"
  };

  DBUG_PRINT("info", ("m_incident: %d", m_incident));

  DBUG_ASSERT(0 <= m_incident);
8354
  DBUG_ASSERT((size_t) m_incident <= sizeof(description)/sizeof(*description));
8355 8356 8357 8358 8359 8360 8361 8362 8363

  return description[m_incident];
}


#ifndef MYSQL_CLIENT
void Incident_log_event::pack_info(Protocol *protocol)
{
  char buf[256];
8364
  size_t bytes;
8365 8366 8367 8368 8369 8370 8371 8372 8373 8374 8375 8376 8377 8378 8379 8380 8381 8382 8383 8384 8385 8386 8387 8388 8389 8390 8391
  if (m_message.length > 0)
    bytes= my_snprintf(buf, sizeof(buf), "#%d (%s)",
                       m_incident, description());
  else
    bytes= my_snprintf(buf, sizeof(buf), "#%d (%s): %s",
                       m_incident, description(), m_message.str);
  protocol->store(buf, bytes, &my_charset_bin);
}
#endif


#ifdef MYSQL_CLIENT
void
Incident_log_event::print(FILE *file,
                          PRINT_EVENT_INFO *print_event_info)
{
  if (print_event_info->short_form)
    return;

  Write_on_release_cache cache(&print_event_info->head_cache, file);
  print_header(&cache, print_event_info, FALSE);
  my_b_printf(&cache, "\n# Incident: %s", description());
}
#endif

#if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT)
int
8392
Incident_log_event::do_apply_event(Relay_log_info const *rli)
8393
{
8394
  DBUG_ENTER("Incident_log_event::do_apply_event");
8395 8396 8397 8398
  rli->report(ERROR_LEVEL, ER_SLAVE_INCIDENT,
              ER(ER_SLAVE_INCIDENT),
              description(),
              m_message.length > 0 ? m_message.str : "<none>");
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  DBUG_RETURN(1);
}
#endif

bool
Incident_log_event::write_data_header(IO_CACHE *file)
{
  DBUG_ENTER("Incident_log_event::write_data_header");
  DBUG_PRINT("enter", ("m_incident: %d", m_incident));
8408
  uchar buf[sizeof(int16)];
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  int2store(buf, (int16) m_incident);
  DBUG_RETURN(my_b_safe_write(file, buf, sizeof(buf)));
}

bool
Incident_log_event::write_data_body(IO_CACHE *file)
{
  DBUG_ENTER("Incident_log_event::write_data_body");
  DBUG_RETURN(write_str(file, m_message.str, m_message.length));
}