/* Copyright (C) 2000-2004 MySQL AB 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 the Free Software Foundation; version 2 of the License. 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. 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 */ #ifdef MYSQL_CLIENT #include "mysql_priv.h" #else #ifdef USE_PRAGMA_IMPLEMENTATION #pragma implementation // gcc: Class implementation #endif #include "mysql_priv.h" #include "slave.h" #include "rpl_rli.h" #include "rpl_mi.h" #include "rpl_filter.h" #include "rpl_utility.h" #include "rpl_record.h" #include <my_dir.h> #endif /* MYSQL_CLIENT */ #include <base64.h> #include <my_bitmap.h> #define log_cs &my_charset_latin1 #define FLAGSTR(V,F) ((V)&(F)?#F" ":"") /* 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) #if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) 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"; case HA_ERR_ROWS_EVENT_APPLY : return "HA_ERR_ROWS_EVENT_APPLY"; } return 0; } /** Error reporting facility for Rows_log_event::do_apply_event @param level error, warning or info @param ha_error HA_ERR_ code @param rli pointer to the active Relay_log_info instance @param thd pointer to the slave thread's thd @param table pointer to the event's table object @param type the type of the event @param log_name the master binlog file name @param pos the master binlog file pos (the next after the 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); char buff[MAX_SLAVE_ERRMSG], *slider; const char *buff_end= buff + sizeof(buff); uint len; List_iterator_fast<MYSQL_ERROR> it(thd->warn_list); MYSQL_ERROR *err; buff[0]= 0; for (err= it++, slider= buff; err && slider < buff_end - 1; slider += len, err= it++) { len= my_snprintf(slider, buff_end - slider, " %s, Error_code: %d;", err->msg, err->code); } rli->report(level, thd->is_error()? thd->main_da.sql_errno() : 0, "Could not execute %s event on table %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, buff, handler_error == NULL? "<unknown>" : handler_error, log_name, pos); } #endif /* 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() { copy_event_cache_to_file_and_reinit(m_cache, m_file); if (m_flags | FLUSH_F) fflush(m_file); } /* Return a pointer to the internal IO_CACHE. SYNOPSIS operator&() DESCRIPTION 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 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; }; #ifndef DBUG_OFF uint debug_not_change_ts_if_art_event= 1; // bug#29309 simulation #endif /* pretty_print_str() */ #ifdef MYSQL_CLIENT static void pretty_print_str(IO_CACHE* cache, const char* str, int len) { const char* end = str + len; my_b_printf(cache, "\'"); while (str < end) { char c; switch ((c=*str++)) { 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; default: my_b_printf(cache, "%c", c); break; } } my_b_printf(cache, "\'"); } #endif /* MYSQL_CLIENT */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) static void clear_all_errors(THD *thd, Relay_log_info *rli) { thd->is_slave_error = 0; thd->clear_error(); rli->clear_error(); } /** Ignore error code specified on command line. */ inline int ignored_error_code(int err_code) { #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 return ((err_code == ER_SLAVE_IGNORED_TABLE) || (use_slave_mask && bitmap_is_set(&slave_error_mask, err_code))); } #endif /* pretty_print_str() */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) static char *pretty_print_str(char *packet, const char *str, int len) { const char *end= str + len; char *pos= packet; *pos++= '\''; while (str < end) { char c; switch ((c=*str++)) { 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; default: *pos++= c; break; } } *pos++= '\''; return pos; } #endif /* !MYSQL_CLIENT */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) /** Creates a temporary name for load data infile:. @param buf Store new filename here @param file_id File_id (part of file name) @param event_server_id Event_id (part of file name) @param ext Extension for file name @return Pointer to start of extension */ static char *slave_load_file_stem(char *buf, uint file_id, int event_server_id, const char *ext) { char *res; fn_format(buf,"SQL_LOAD-",slave_load_tmpdir, "", MY_UNPACK_FILENAME); to_unix_path(buf); buf = strend(buf); buf = int10_to_str(::server_id, buf, 10); *buf++ = '-'; buf = int10_to_str(event_server_id, buf, 10); *buf++ = '-'; res= int10_to_str(file_id, buf, 10); strmov(res, ext); // Add extension last return res; // Pointer to extension } #endif #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) /** Delete all temporary files used for SQL_LOAD. */ static void cleanup_load_tmpdir() { MY_DIR *dirp; FILEINFO *file; uint i; char fname[FN_REFLEN], prefbuf[31], *p; if (!(dirp=my_dir(slave_load_tmpdir,MYF(MY_WME)))) return; /* 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. */ p= strmake(prefbuf, STRING_WITH_LEN("SQL_LOAD-")); p= int10_to_str(::server_id, p, 10); *(p++)= '-'; *p= 0; for (i=0 ; i < (uint)dirp->number_off_files; i++) { file=dirp->dir_entry+i; if (is_prefix(file->name, prefbuf)) { fn_format(fname,file->name,slave_load_tmpdir,"",MY_UNPACK_FILENAME); my_delete(fname, MYF(0)); } } my_dirend(dirp); } #endif /* write_str() */ static bool write_str(IO_CACHE *file, const char *str, uint length) { uchar tmp[1]; tmp[0]= (uchar) length; return (my_b_safe_write(file, tmp, sizeof(tmp)) || my_b_safe_write(file, (uchar*) str, length)); } /* read_str() */ static inline int read_str(const char **buf, const char *buf_end, const char **str, uint8 *len) { if (*buf + ((uint) (uchar) **buf) >= buf_end) return 1; *len= (uint8) **buf; *str= (*buf)+1; (*buf)+= (uint) *len+1; return 0; } /** Transforms a string into "" or its expression in 0x... form. */ char *str_to_hex(char *to, const char *from, uint len) { if (len) { *to++= '0'; *to++= 'x'; to= octet2hex(to, from, len); } else to= strmov(to, "\"\""); return to; // pointer to end 0 of 'to' } #ifndef MYSQL_CLIENT /** 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. */ 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++= '\''; ptr+= escape_string_for_mysql(csinfo, ptr, 0, from->ptr(), from->length()); *ptr++='\''; } to->length(orig_len + ptr - beg); return 0; } #endif /** Prints a "session_var=value" string. Used by mysqlbinlog to print some SET commands just before it prints a query. */ #ifdef MYSQL_CLIENT static void print_set_option(IO_CACHE* file, uint32 bits_changed, uint32 option, uint32 flags, const char* name, bool* need_comma) { if (bits_changed & option) { if (*need_comma) my_b_printf(file,", "); my_b_printf(file,"%s=%d", name, test(flags & option)); *need_comma= 1; } } #endif /************************************************************************** Log_event methods (= the parent class of all events) **************************************************************************/ /** @return returns the human readable name of the event's type */ const char* Log_event::get_type_str(Log_event_type type) { switch(type) { case START_EVENT_V3: return "Start_v3"; 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"; case NEW_LOAD_EVENT: return "New_load"; case SLAVE_EVENT: return "Slave"; 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"; case RAND_EVENT: return "RAND"; case XID_EVENT: return "Xid"; case USER_VAR_EVENT: return "User var"; case FORMAT_DESCRIPTION_EVENT: return "Format_desc"; case TABLE_MAP_EVENT: return "Table_map"; case PRE_GA_WRITE_ROWS_EVENT: return "Write_rows_event_old"; case PRE_GA_UPDATE_ROWS_EVENT: return "Update_rows_event_old"; case PRE_GA_DELETE_ROWS_EVENT: return "Delete_rows_event_old"; case WRITE_ROWS_EVENT: return "Write_rows"; case UPDATE_ROWS_EVENT: return "Update_rows"; case DELETE_ROWS_EVENT: return "Delete_rows"; case BEGIN_LOAD_QUERY_EVENT: return "Begin_load_query"; case EXECUTE_LOAD_QUERY_EVENT: return "Execute_load_query"; case INCIDENT_EVENT: return "Incident"; default: return "Unknown"; /* impossible */ } } const char* Log_event::get_type_str() { return get_type_str(get_type_code()); } /* Log_event::Log_event() */ #ifndef MYSQL_CLIENT Log_event::Log_event(THD* thd_arg, uint16 flags_arg, bool using_trans) :log_pos(0), temp_buf(0), exec_time(0), flags(flags_arg), thd(thd_arg) { server_id= thd->server_id; when= thd->start_time; cache_stmt= using_trans; } /** 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). */ Log_event::Log_event() :temp_buf(0), exec_time(0), flags(0), cache_stmt(0), thd(0) { server_id= ::server_id; /* We can't call my_time() here as this would cause a call before my_init() is called */ when= 0; log_pos= 0; } #endif /* !MYSQL_CLIENT */ /* Log_event::Log_event() */ Log_event::Log_event(const char* buf, const Format_description_log_event* description_event) :temp_buf(0), cache_stmt(0) { #ifndef MYSQL_CLIENT thd = 0; #endif when = uint4korr(buf); server_id = uint4korr(buf + SERVER_ID_OFFSET); data_written= uint4korr(buf + EVENT_LEN_OFFSET); if (description_event->binlog_version==1) { log_pos= 0; flags= 0; return; } /* 4.0 or newer */ log_pos= uint4korr(buf + LOG_POS_OFFSET); /* 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). */ if (description_event->binlog_version==3 && buf[EVENT_TYPE_OFFSET]<FORMAT_DESCRIPTION_EVENT && log_pos) { /* 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 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 not have its log_pos (which is 0) changed or it will modify 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). */ log_pos+= data_written; /* purecov: inspected */ } 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)) { /* These events always have a header which stops here (i.e. their header is FROZEN). */ /* 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. */ return; } /* otherwise, go on with reading the header from buf (nothing now) */ } #ifndef MYSQL_CLIENT #ifdef HAVE_REPLICATION int Log_event::do_update_pos(Relay_log_info *rli) { /* rli is null when (as far as I (Guilhem) know) the caller is 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. 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. Matz: I don't think we will need this check with this refactoring. */ if (rli) { /* 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; }); } return 0; // Cannot fail currently } Log_event::enum_skip_reason Log_event::do_shall_skip(Relay_log_info *rli) { 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)); if (server_id == ::server_id && !rli->replicate_same_server_id || rli->slave_skip_counter == 1 && rli->is_in_group()) return EVENT_SKIP_IGNORE; else if (rli->slave_skip_counter > 0) return EVENT_SKIP_COUNT; else return EVENT_SKIP_NOT; } /* Log_event::pack_info() */ void Log_event::pack_info(Protocol *protocol) { protocol->store("", &my_charset_bin); } /** Only called by SHOW BINLOG EVENTS */ int Log_event::net_send(Protocol *protocol, const char* log_name, my_off_t pos) { const char *p= strrchr(log_name, FN_LIBCHAR); const char *event_type; if (p) log_name = p + 1; protocol->prepare_for_resend(); protocol->store(log_name, &my_charset_bin); protocol->store((ulonglong) pos); event_type = get_type_str(); protocol->store(event_type, strlen(event_type), &my_charset_bin); protocol->store((uint32) server_id); protocol->store((ulonglong) log_pos); pack_info(protocol); return protocol->write(); } #endif /* HAVE_REPLICATION */ /** init_show_field_list() prepares the column names and types for the output of SHOW BINLOG EVENTS; it is used only by SHOW BINLOG EVENTS. */ void Log_event::init_show_field_list(List<Item>* field_list) { field_list->push_back(new Item_empty_string("Log_name", 20)); field_list->push_back(new Item_return_int("Pos", MY_INT32_NUM_DECIMAL_DIGITS, 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)); field_list->push_back(new Item_return_int("End_log_pos", MY_INT32_NUM_DECIMAL_DIGITS, MYSQL_TYPE_LONGLONG)); field_list->push_back(new Item_empty_string("Info", 20)); } /* Log_event::write() */ bool Log_event::write_header(IO_CACHE* file, ulong event_data_length) { uchar header[LOG_EVENT_HEADER_LEN]; ulong now; DBUG_ENTER("Log_event::write_header"); /* Store number of bytes that will be written by this event */ data_written= event_data_length + sizeof(header); /* log_pos != 0 if this is relay-log event. In this case we should not change the position */ 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; } now= (ulong) get_time(); // Query start time /* 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). */ int4store(header, now); // timestamp 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); } /** This needn't be format-tolerant, because we only read LOG_EVENT_MINIMAL_HEADER_LEN (we just want to read the event's length). */ int Log_event::read_log_event(IO_CACHE* file, String* packet, pthread_mutex_t* log_lock) { ulong data_len; int result=0; char buf[LOG_EVENT_MINIMAL_HEADER_LEN]; DBUG_ENTER("Log_event::read_log_event"); if (log_lock) pthread_mutex_lock(log_lock); if (my_b_read(file, (uchar*) buf, sizeof(buf))) { /* 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. */ DBUG_PRINT("error",("file->error: %d", file->error)); if (!file->error) result= LOG_READ_EOF; else result= (file->error > 0 ? LOG_READ_TRUNC : LOG_READ_IO); goto end; } data_len= uint4korr(buf + EVENT_LEN_OFFSET); if (data_len < LOG_EVENT_MINIMAL_HEADER_LEN || data_len > current_thd->variables.max_allowed_packet) { DBUG_PRINT("error",("data_len: %ld", data_len)); result= ((data_len < LOG_EVENT_MINIMAL_HEADER_LEN) ? LOG_READ_BOGUS : LOG_READ_TOO_LARGE); goto end; } /* Append the log event header to packet */ if (packet->append(buf, sizeof(buf))) { /* Failed to allocate packet */ result= LOG_READ_MEM; goto end; } data_len-= LOG_EVENT_MINIMAL_HEADER_LEN; if (data_len) { /* Append rest of event, read directly from file into packet */ if (packet->append(file, data_len)) { /* 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) */ result= (my_errno == ENOMEM ? LOG_READ_MEM : (file->error >= 0 ? LOG_READ_TRUNC: LOG_READ_IO)); /* Implicit goto end; */ } } end: if (log_lock) pthread_mutex_unlock(log_lock); DBUG_RETURN(result); } #endif /* !MYSQL_CLIENT */ #ifndef MYSQL_CLIENT #define UNLOCK_MUTEX if (log_lock) pthread_mutex_unlock(log_lock); #define LOCK_MUTEX if (log_lock) pthread_mutex_lock(log_lock); #else #define UNLOCK_MUTEX #define LOCK_MUTEX #endif #ifndef MYSQL_CLIENT /** @note Allocates memory; The caller is responsible for clean-up. */ Log_event* Log_event::read_log_event(IO_CACHE* file, pthread_mutex_t* log_lock, const Format_description_log_event *description_event) #else Log_event* Log_event::read_log_event(IO_CACHE* file, const Format_description_log_event *description_event) #endif { DBUG_ENTER("Log_event::read_log_event"); DBUG_ASSERT(description_event != 0); 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 of 13 bytes, whereas LOG_EVENT_MINIMAL_HEADER_LEN is 19 bytes (it's "minimal" over the set {MySQL >=4.0}). */ uint header_size= min(description_event->common_header_len, LOG_EVENT_MINIMAL_HEADER_LEN); LOCK_MUTEX; DBUG_PRINT("info", ("my_b_tell: %lu", (ulong) my_b_tell(file))); if (my_b_read(file, (uchar *) head, header_size)) { DBUG_PRINT("info", ("Log_event::read_log_event(IO_CACHE*,Format_desc*) \ failed my_b_read")); UNLOCK_MUTEX; /* 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. */ DBUG_RETURN(0); } uint data_len = uint4korr(head + EVENT_LEN_OFFSET); char *buf= 0; const char *error= 0; Log_event *res= 0; #ifndef max_allowed_packet THD *thd=current_thd; uint max_allowed_packet= thd ? thd->variables.max_allowed_packet : ~(ulong)0; #endif if (data_len > max_allowed_packet) { error = "Event too big"; goto err; } if (data_len < header_size) { error = "Event too small"; goto err; } // some events use the extra byte to null-terminate strings if (!(buf = (char*) my_malloc(data_len+1, MYF(MY_WME)))) { error = "Out of memory"; goto err; } buf[data_len] = 0; memcpy(buf, head, header_size); if (my_b_read(file, (uchar*) buf + header_size, data_len - header_size)) { error = "read error"; goto err; } if ((res= read_log_event(buf, data_len, &error, description_event))) res->register_temp_buf(buf); err: UNLOCK_MUTEX; if (!res) { DBUG_ASSERT(error != 0); sql_print_error("Error in Log_event::read_log_event(): " "'%s', data_len: %d, event_type: %d", error,data_len,head[EVENT_TYPE_OFFSET]); my_free(buf, MYF(MY_ALLOW_ZERO_PTR)); /* 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; } DBUG_RETURN(res); } /** Binlog format tolerance is in (buf, event_len, description_event) constructors. */ Log_event* Log_event::read_log_event(const char* buf, uint event_len, const char **error, const Format_description_log_event *description_event) { Log_event* ev; DBUG_ENTER("Log_event::read_log_event(char*,...)"); DBUG_ASSERT(description_event != 0); DBUG_PRINT("info", ("binlog_version: %d", description_event->binlog_version)); DBUG_DUMP("data", (unsigned char*) buf, event_len); /* Check the integrity */ if (event_len < EVENT_LEN_OFFSET || buf[EVENT_TYPE_OFFSET] >= ENUM_END_EVENT || (uint) event_len != uint4korr(buf+EVENT_LEN_OFFSET)) { *error="Sanity check failed"; // Needed to free buffer DBUG_RETURN(NULL); // general sanity check - will fail on a partial read } uint event_type= buf[EVENT_TYPE_OFFSET]; if (event_type > description_event->number_of_event_types && event_type != FORMAT_DESCRIPTION_EVENT) { /* It is unsafe to use the description_event if its post_header_len array does not include the event type. */ DBUG_PRINT("error", ("event type %d found, but the current " "Format_description_log_event supports only %d event " "types", event_type, description_event->number_of_event_types)); ev= NULL; } else { /* In some previuos versions (see comment in Format_description_log_event::Format_description_log_event(char*,...)), event types were assigned different id numbers than in the present version. In order to replicate from such versions to the present version, we must map those event type id's to our event type id's. The mapping is done with the event_type_permutation array, which was set up when the Format_description_log_event was read. */ if (description_event->event_type_permutation) { IF_DBUG({ int new_event_type= description_event->event_type_permutation[event_type]; DBUG_PRINT("info", ("converting event type %d to %d (%s)", event_type, new_event_type, get_type_str((Log_event_type)new_event_type))); }); event_type= description_event->event_type_permutation[event_type]; } switch(event_type) { case QUERY_EVENT: ev = new Query_log_event(buf, event_len, description_event, QUERY_EVENT); break; case LOAD_EVENT: ev = new Load_log_event(buf, event_len, description_event); break; case NEW_LOAD_EVENT: ev = new Load_log_event(buf, event_len, description_event); break; case ROTATE_EVENT: ev = new Rotate_log_event(buf, event_len, description_event); break; #ifdef HAVE_REPLICATION case SLAVE_EVENT: /* can never happen (unused event) */ ev = new Slave_log_event(buf, event_len); break; #endif /* HAVE_REPLICATION */ case CREATE_FILE_EVENT: ev = new Create_file_log_event(buf, event_len, description_event); break; case APPEND_BLOCK_EVENT: ev = new Append_block_log_event(buf, event_len, description_event); break; case DELETE_FILE_EVENT: ev = new Delete_file_log_event(buf, event_len, description_event); break; case EXEC_LOAD_EVENT: ev = new Execute_load_log_event(buf, event_len, description_event); break; case START_EVENT_V3: /* this is sent only by MySQL <=4.x */ ev = new Start_log_event_v3(buf, description_event); break; case STOP_EVENT: ev = new Stop_log_event(buf, description_event); break; case INTVAR_EVENT: ev = new Intvar_log_event(buf, description_event); break; case XID_EVENT: ev = new Xid_log_event(buf, description_event); break; case RAND_EVENT: ev = new Rand_log_event(buf, description_event); break; case USER_VAR_EVENT: 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); break; #if defined(HAVE_REPLICATION) 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; 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 case BEGIN_LOAD_QUERY_EVENT: ev = new Begin_load_query_log_event(buf, event_len, description_event); break; case EXECUTE_LOAD_QUERY_EVENT: 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); break; default: DBUG_PRINT("error",("Unknown event code: %d", (int) buf[EVENT_TYPE_OFFSET])); ev= NULL; break; } } DBUG_PRINT("read_event", ("%s(type_code: %d; event_len: %d)", ev ? ev->get_type_str() : "<unknown>", buf[EVENT_TYPE_OFFSET], event_len)); /* 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'. */ if (!ev || !ev->is_valid()) { DBUG_PRINT("error",("Found invalid event in binary log")); delete ev; #ifdef MYSQL_CLIENT if (!force_opt) /* then mysqlbinlog dies */ { *error= "Found invalid event in binary log"; DBUG_RETURN(0); } ev= new Unknown_log_event(buf, description_event); #else *error= "Found invalid event in binary log"; DBUG_RETURN(0); #endif } DBUG_RETURN(ev); } #ifdef MYSQL_CLIENT /* Log_event::print_header() */ void Log_event::print_header(IO_CACHE* file, PRINT_EVENT_INFO* print_event_info, bool is_more __attribute__((unused))) { char llbuff[22]; my_off_t hexdump_from= print_event_info->hexdump_from; DBUG_ENTER("Log_event::print_header"); my_b_printf(file, "#"); print_timestamp(file); my_b_printf(file, " server id %d end_log_pos %s ", server_id, llstr(log_pos,llbuff)); /* mysqlbinlog --hexdump */ if (print_event_info->hexdump_from) { my_b_printf(file, "\n"); uchar *ptr= (uchar*)temp_buf; my_off_t size= uint4korr(ptr + EVENT_LEN_OFFSET) - LOG_EVENT_MINIMAL_HEADER_LEN; my_off_t i; /* 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}; /* Pretty-print event common header if header is exactly 19 bytes */ if (print_event_info->common_header_len == LOG_EVENT_MINIMAL_HEADER_LEN) { 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); DBUG_ASSERT(static_cast<size_t>(bytes_written) < sizeof(emit_buf)); my_b_write(file, (uchar*) emit_buf, bytes_written); ptr += LOG_EVENT_MINIMAL_HEADER_LEN; hexdump_from += LOG_EVENT_MINIMAL_HEADER_LEN; } /* Rest of event (without common header) */ for (i= 0, c= char_string, h=hex_string; i < size; i++, ptr++) { my_snprintf(h, 4, "%02x ", *ptr); h += 3; *c++= my_isalnum(&my_charset_bin, *ptr) ? *ptr : '.'; if (i % 16 == 15) { /* 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); DBUG_ASSERT(static_cast<size_t>(bytes_written) < sizeof(emit_buf)); my_b_write(file, (uchar*) emit_buf, bytes_written); hex_string[0]= 0; char_string[0]= 0; c= char_string; h= hex_string; } else if (i % 8 == 7) *h++ = ' '; } *c= '\0'; if (hex_string[0]) { char emit_buf[256]; int const bytes_written= my_snprintf(emit_buf, sizeof(emit_buf), "# %8.8lx %-48.48s |%s|\n", (unsigned long) (hexdump_from + (i & 0xfffffff0)), hex_string, char_string); DBUG_ASSERT(bytes_written >= 0); DBUG_ASSERT(static_cast<size_t>(bytes_written) < sizeof(emit_buf)); my_b_write(file, (uchar*) emit_buf, bytes_written); } /* need a # to prefix the rest of printouts for example those of Rows_log_event::print_helper(). */ my_b_write(file, reinterpret_cast<const uchar*>("# "), 2); } DBUG_VOID_RETURN; } /** Prints a quoted string to io cache. Control characters are displayed as hex sequence, e.g. \x00 @param[in] file IO cache @param[in] prt Pointer to string @param[in] length String length */ static void my_b_write_quoted(IO_CACHE *file, const uchar *ptr, uint length) { const uchar *s; my_b_printf(file, "'"); for (s= ptr; length > 0 ; s++, length--) { if (*s > 0x1F) my_b_write(file, s, 1); else { uchar hex[10]; size_t len= my_snprintf((char*) hex, sizeof(hex), "%s%02x", "\\x", *s); my_b_write(file, hex, len); } } my_b_printf(file, "'"); } /** Prints a bit string to io cache in format b'1010'. @param[in] file IO cache @param[in] ptr Pointer to string @param[in] nbits Number of bits */ static void my_b_write_bit(IO_CACHE *file, const uchar *ptr, uint nbits) { uint bitnum, nbits8= ((nbits + 7) / 8) * 8, skip_bits= nbits8 - nbits; my_b_printf(file, "b'"); for (bitnum= skip_bits ; bitnum < nbits8; bitnum++) { int is_set= (ptr[(bitnum) / 8] >> (7 - bitnum % 8)) & 0x01; my_b_write(file, (const uchar*) (is_set ? "1" : "0"), 1); } my_b_printf(file, "'"); } /** Prints a packed string to io cache. The string consists of length packed to 1 or 2 bytes, followed by string data itself. @param[in] file IO cache @param[in] ptr Pointer to string @param[in] length String size @retval - number of bytes scanned. */ static size_t my_b_write_quoted_with_length(IO_CACHE *file, const uchar *ptr, uint length) { if (length < 256) { length= *ptr; my_b_write_quoted(file, ptr + 1, length); return length + 1; } else { length= uint2korr(ptr); my_b_write_quoted(file, ptr + 2, length); return length + 2; } } /** Prints a 32-bit number in both signed and unsigned representation @param[in] file IO cache @param[in] sl Signed number @param[in] ul Unsigned number */ static void my_b_write_sint32_and_uint32(IO_CACHE *file, int32 si, uint32 ui) { my_b_printf(file, "%d", si); if (si < 0) my_b_printf(file, " (%u)", ui); } /** Print a packed value of the given SQL type into IO cache @param[in] file IO cache @param[in] ptr Pointer to string @param[in] type Column type @param[in] meta Column meta information @param[out] typestr SQL type string buffer (for verbose output) @param[out] typestr_length Size of typestr @retval - number of bytes scanned from ptr. */ static size_t log_event_print_value(IO_CACHE *file, const uchar *ptr, uint type, uint meta, char *typestr, size_t typestr_length) { uint32 length= 0; if (type == MYSQL_TYPE_STRING) { if (meta >= 256) { uint byte0= meta >> 8; uint byte1= meta & 0xFF; if ((byte0 & 0x30) != 0x30) { /* a long CHAR() field: see #37426 */ length= byte1 | (((byte0 & 0x30) ^ 0x30) << 4); type= byte0 | 0x30; goto beg; } switch (byte0) { case MYSQL_TYPE_SET: case MYSQL_TYPE_ENUM: case MYSQL_TYPE_STRING: type= byte0; length= byte1; break; default: { char tmp[5]; my_snprintf(tmp, sizeof(tmp), "%04X", meta); my_b_printf(file, "!! Don't know how to handle column type=%d meta=%d (%s)", type, meta, tmp); return 0; } } } else length= meta; } beg: switch (type) { case MYSQL_TYPE_LONG: { int32 si= sint4korr(ptr); uint32 ui= uint4korr(ptr); my_b_write_sint32_and_uint32(file, si, ui); my_snprintf(typestr, typestr_length, "INT"); return 4; } case MYSQL_TYPE_TINY: { my_b_write_sint32_and_uint32(file, (int) (signed char) *ptr, (uint) (unsigned char) *ptr); my_snprintf(typestr, typestr_length, "TINYINT"); return 1; } case MYSQL_TYPE_SHORT: { int32 si= (int32) sint2korr(ptr); uint32 ui= (uint32) uint2korr(ptr); my_b_write_sint32_and_uint32(file, si, ui); my_snprintf(typestr, typestr_length, "SHORTINT"); return 2; } case MYSQL_TYPE_INT24: { int32 si= sint3korr(ptr); uint32 ui= uint3korr(ptr); my_b_write_sint32_and_uint32(file, si, ui); my_snprintf(typestr, typestr_length, "MEDIUMINT"); return 3; } case MYSQL_TYPE_LONGLONG: { char tmp[64]; longlong si= sint8korr(ptr); longlong10_to_str(si, tmp, -10); my_b_printf(file, "%s", tmp); if (si < 0) { ulonglong ui= uint8korr(ptr); longlong10_to_str((longlong) ui, tmp, 10); my_b_printf(file, " (%s)", tmp); } my_snprintf(typestr, typestr_length, "LONGINT"); return 8; } case MYSQL_TYPE_NEWDECIMAL: { uint precision= meta >> 8; uint decimals= meta & 0xFF; uint bin_size= my_decimal_get_binary_size(precision, decimals); my_decimal dec; binary2my_decimal(E_DEC_FATAL_ERROR, (uchar*) ptr, &dec, precision, decimals); int i, end; char buff[512], *pos; pos= buff; pos+= my_sprintf(buff, (buff, "%s", dec.sign() ? "-" : "")); end= ROUND_UP(dec.frac) + ROUND_UP(dec.intg)-1; for (i=0; i < end; i++) pos+= my_sprintf(pos, (pos, "%09d.", dec.buf[i])); pos+= my_sprintf(pos, (pos, "%09d", dec.buf[i])); my_b_printf(file, "%s", buff); my_snprintf(typestr, typestr_length, "DECIMAL(%d,%d)", precision, decimals); return bin_size; } case MYSQL_TYPE_FLOAT: { float fl; float4get(fl, ptr); char tmp[320]; sprintf(tmp, "%-20g", (double) fl); my_b_printf(file, "%s", tmp); /* my_snprintf doesn't support %-20g */ my_snprintf(typestr, typestr_length, "FLOAT"); return 4; } case MYSQL_TYPE_DOUBLE: { double dbl; float8get(dbl, ptr); char tmp[320]; sprintf(tmp, "%-.20g", dbl); /* my_snprintf doesn't support %-20g */ my_b_printf(file, "%s", tmp); strcpy(typestr, "DOUBLE"); return 8; } case MYSQL_TYPE_BIT: { /* Meta-data: bit_len, bytes_in_rec, 2 bytes */ uint nbits= ((meta >> 8) * 8) + (meta & 0xFF); length= (nbits + 7) / 8; my_b_write_bit(file, ptr, nbits); my_snprintf(typestr, typestr_length, "BIT(%d)", nbits); return length; } case MYSQL_TYPE_TIMESTAMP: { uint32 i32= uint4korr(ptr); my_b_printf(file, "%d", i32); my_snprintf(typestr, typestr_length, "TIMESTAMP"); return 4; } case MYSQL_TYPE_DATETIME: { uint d, t; uint64 i64= uint8korr(ptr); /* YYYYMMDDhhmmss */ d= i64 / 1000000; t= i64 % 1000000; my_b_printf(file, "%04d-%02d-%02d %02d:%02d:%02d", d / 10000, (d % 10000) / 100, d % 100, t / 10000, (t % 10000) / 100, t % 100); my_snprintf(typestr, typestr_length, "DATETIME"); return 8; } case MYSQL_TYPE_TIME: { uint32 i32= uint3korr(ptr); my_b_printf(file, "'%02d:%02d:%02d'", i32 / 10000, (i32 % 10000) / 100, i32 % 100); my_snprintf(typestr, typestr_length, "TIME"); return 3; } case MYSQL_TYPE_DATE: { uint i32= uint3korr(ptr); my_b_printf(file , "'%04d:%02d:%02d'", (i32 / (16L * 32L)), (i32 / 32L % 16L), (i32 % 32L)); my_snprintf(typestr, typestr_length, "DATE"); return 3; } case MYSQL_TYPE_YEAR: { uint32 i32= *ptr; my_b_printf(file, "%04d", i32+ 1900); my_snprintf(typestr, typestr_length, "YEAR"); return 1; } case MYSQL_TYPE_ENUM: switch (length) { case 1: my_b_printf(file, "%d", (int) *ptr); my_snprintf(typestr, typestr_length, "ENUM(1 byte)"); return 1; case 2: { int32 i32= uint2korr(ptr); my_b_printf(file, "%d", i32); my_snprintf(typestr, typestr_length, "ENUM(2 bytes)"); return 2; } default: my_b_printf(file, "!! Unknown ENUM packlen=%d", length); return 0; } break; case MYSQL_TYPE_SET: my_b_write_bit(file, ptr , length * 8); my_snprintf(typestr, typestr_length, "SET(%d bytes)", length); return length; case MYSQL_TYPE_BLOB: switch (meta) { case 1: length= *ptr; my_b_write_quoted(file, ptr + 1, length); my_snprintf(typestr, typestr_length, "TINYBLOB/TINYTEXT"); return length + 1; case 2: length= uint2korr(ptr); my_b_write_quoted(file, ptr + 2, length); my_snprintf(typestr, typestr_length, "BLOB/TEXT"); return length + 2; case 3: length= uint3korr(ptr); my_b_write_quoted(file, ptr + 3, length); my_snprintf(typestr, typestr_length, "MEDIUMBLOB/MEDIUMTEXT"); return length + 3; case 4: length= uint4korr(ptr); my_b_write_quoted(file, ptr + 4, length); my_snprintf(typestr, typestr_length, "LONGBLOB/LONGTEXT"); return length + 4; default: my_b_printf(file, "!! Unknown BLOB packlen=%d", length); return 0; } case MYSQL_TYPE_VARCHAR: case MYSQL_TYPE_VAR_STRING: length= meta; my_snprintf(typestr, typestr_length, "VARSTRING(%d)", length); return my_b_write_quoted_with_length(file, ptr, length); case MYSQL_TYPE_STRING: my_snprintf(typestr, typestr_length, "STRING(%d)", length); return my_b_write_quoted_with_length(file, ptr, length); default: { char tmp[5]; my_snprintf(tmp, sizeof(tmp), "%04x", meta); my_b_printf(file, "!! Don't know how to handle column type=%d meta=%d (%s)", type, meta, tmp); } break; } *typestr= 0; return 0; } /** Print a packed row into IO cache @param[in] file IO cache @param[in] td Table definition @param[in] print_event_into Print parameters @param[in] cols_bitmap Column bitmaps. @param[in] value Pointer to packed row @param[in] prefix Row's SQL clause ("SET", "WHERE", etc) @retval - number of bytes scanned. */ size_t Rows_log_event::print_verbose_one_row(IO_CACHE *file, table_def *td, PRINT_EVENT_INFO *print_event_info, MY_BITMAP *cols_bitmap, const uchar *value, const uchar *prefix) { const uchar *value0= value; const uchar *null_bits= value; char typestr[64]= ""; value+= (m_width + 7) / 8; my_b_printf(file, "%s", prefix); for (size_t i= 0; i < td->size(); i ++) { int is_null= (null_bits[i / 8] >> (i % 8)) & 0x01; if (bitmap_is_set(cols_bitmap, i) == 0) continue; if (is_null) { my_b_printf(file, "### @%d=NULL", i + 1); } else { my_b_printf(file, "### @%d=", i + 1); size_t size= log_event_print_value(file, value, td->type(i), td->field_metadata(i), typestr, sizeof(typestr)); if (!size) return 0; value+= size; } if (print_event_info->verbose > 1) { my_b_printf(file, " /* "); if (typestr[0]) my_b_printf(file, "%s ", typestr); else my_b_printf(file, "type=%d ", td->type(i)); my_b_printf(file, "meta=%d nullable=%d is_null=%d ", td->field_metadata(i), td->maybe_null(i), is_null); my_b_printf(file, "*/"); } my_b_printf(file, "\n"); } return value - value0; } /** Print a row event into IO cache in human readable form (in SQL format) @param[in] file IO cache @param[in] print_event_into Print parameters */ void Rows_log_event::print_verbose(IO_CACHE *file, PRINT_EVENT_INFO *print_event_info) { Table_map_log_event *map; table_def *td; const char *sql_command, *sql_clause1, *sql_clause2; Log_event_type type_code= get_type_code(); switch (type_code) { case WRITE_ROWS_EVENT: sql_command= "INSERT INTO"; sql_clause1= "### SET\n"; sql_clause2= NULL; break; case DELETE_ROWS_EVENT: sql_command= "DELETE FROM"; sql_clause1= "### WHERE\n"; sql_clause2= NULL; break; case UPDATE_ROWS_EVENT: sql_command= "UPDATE"; sql_clause1= "### WHERE\n"; sql_clause2= "### SET\n"; break; default: sql_command= sql_clause1= sql_clause2= NULL; DBUG_ASSERT(0); /* Not possible */ } if (!(map= print_event_info->m_table_map.get_table(m_table_id)) || !(td= map->create_table_def())) { my_b_printf(file, "### Row event for unknown table #%d", m_table_id); return; } for (const uchar *value= m_rows_buf; value < m_rows_end; ) { size_t length; my_b_printf(file, "### %s %s.%s\n", sql_command, map->get_db_name(), map->get_table_name()); /* Print the first image */ if (!(length= print_verbose_one_row(file, td, print_event_info, &m_cols, value, (const uchar*) sql_clause1))) goto end; value+= length; /* Print the second image (for UPDATE only) */ if (sql_clause2) { if (!(length= print_verbose_one_row(file, td, print_event_info, &m_cols_ai, value, (const uchar*) sql_clause2))) goto end; value+= length; } } end: delete td; } #ifdef MYSQL_CLIENT void free_table_map_log_event(Table_map_log_event *event) { delete event; } #endif void Log_event::print_base64(IO_CACHE* file, PRINT_EVENT_INFO* print_event_info, bool more) { const uchar *ptr= (const uchar *)temp_buf; uint32 size= uint4korr(ptr + EVENT_LEN_OFFSET); DBUG_ENTER("Log_event::print_base64"); size_t const tmp_str_sz= base64_needed_encoded_length((int) size); char *const tmp_str= (char *) my_malloc(tmp_str_sz, MYF(MY_WME)); if (!tmp_str) { fprintf(stderr, "\nError: Out of memory. " "Could not print correct binlog event.\n"); DBUG_VOID_RETURN; } if (base64_encode(ptr, (size_t) size, tmp_str)) { DBUG_ASSERT(0); } if (print_event_info->base64_output_mode != BASE64_OUTPUT_DECODE_ROWS) { if (my_b_tell(file) == 0) my_b_printf(file, "\nBINLOG '\n"); my_b_printf(file, "%s\n", tmp_str); if (!more) my_b_printf(file, "'%s\n", print_event_info->delimiter); } if (print_event_info->verbose) { Rows_log_event *ev= NULL; if (ptr[4] == TABLE_MAP_EVENT) { Table_map_log_event *map; map= new Table_map_log_event((const char*) ptr, size, glob_description_event); print_event_info->m_table_map.set_table(map->get_table_id(), map); } else if (ptr[4] == WRITE_ROWS_EVENT) { ev= new Write_rows_log_event((const char*) ptr, size, glob_description_event); } else if (ptr[4] == DELETE_ROWS_EVENT) { ev= new Delete_rows_log_event((const char*) ptr, size, glob_description_event); } else if (ptr[4] == UPDATE_ROWS_EVENT) { ev= new Update_rows_log_event((const char*) ptr, size, glob_description_event); } if (ev) { ev->print_verbose(file, print_event_info); delete ev; } } my_free(tmp_str, MYF(0)); DBUG_VOID_RETURN; } /* Log_event::print_timestamp() */ void Log_event::print_timestamp(IO_CACHE* file, time_t* ts) { struct tm *res; DBUG_ENTER("Log_event::print_timestamp"); if (!ts) ts = &when; #ifdef MYSQL_SERVER // This is always false struct tm tm_tmp; localtime_r(ts,(res= &tm_tmp)); #else res=localtime(ts); #endif 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; } #endif /* MYSQL_CLIENT */ #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 /************************************************************************** Query_log_event methods **************************************************************************/ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) /** 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). @todo show the catalog ?? */ void Query_log_event::pack_info(Protocol *protocol) { // TODO: show the catalog ?? char *buf, *pos; if (!(buf= (char*) my_malloc(9 + db_len + q_len, MYF(MY_WME)))) return; pos= buf; if (!(flags & LOG_EVENT_SUPPRESS_USE_F) && 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; } protocol->store(buf, pos-buf, &my_charset_bin); my_free(buf, MYF(MY_ALLOW_ZERO_PTR)); } #endif #ifndef MYSQL_CLIENT /** Utility function for the next method (Query_log_event::write()) . */ static void write_str_with_code_and_len(char **dst, const char *src, int len, uint code) { /* only 1 byte to store the length of catalog, so it should not surpass 255 */ DBUG_ASSERT(len <= 255); DBUG_ASSERT(src); *((*dst)++)= code; *((*dst)++)= (uchar) len; bmove(*dst, src, len); (*dst)+= len; } /** Query_log_event::write(). @note 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! */ bool Query_log_event::write(IO_CACHE* file) { uchar buf[QUERY_HEADER_LEN + MAX_SIZE_LOG_EVENT_STATUS]; uchar *start, *start_of_status; ulong event_length; if (!query) return 1; // Something wrong with event /* 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. Now imagine we (write()) are called by the slave SQL thread (we are 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); int4store(buf + Q_EXEC_TIME_OFFSET, exec_time); buf[Q_DB_LEN_OFFSET] = (char) db_len; int2store(buf + Q_ERR_CODE_OFFSET, error_code); /* 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) { *start++= Q_FLAGS2_CODE; int4store(start, flags2); start+= 4; } if (sql_mode_inited) { *start++= Q_SQL_MODE_CODE; int8store(start, (ulonglong)sql_mode); start+= 8; } if (catalog_len) // i.e. this var is inited (false for 4.0 events) { write_str_with_code_and_len((char **)(&start), catalog, catalog_len, Q_CATALOG_NZ_CODE); /* 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 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 Q_AUTO_INCREMENT*, Q_CHARSET and so replication will fail silently in various ways. Documented that you should not mix alpha/beta versions if 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. */ } if (auto_increment_increment != 1 || auto_increment_offset != 1) { *start++= Q_AUTO_INCREMENT; int2store(start, auto_increment_increment); int2store(start+2, auto_increment_offset); start+= 4; } if (charset_inited) { *start++= Q_CHARSET_CODE; memcpy(start, charset, 6); start+= 6; } 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); write_str_with_code_and_len((char **)(&start), time_zone_str, time_zone_len, Q_TIME_ZONE_CODE); } 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; } if (charset_database_number) { DBUG_ASSERT(charset_database_number <= 0xFFFF); *start++= Q_CHARSET_DATABASE_CODE; int2store(start, charset_database_number); start+= 2; } if (table_map_for_update) { *start++= Q_TABLE_MAP_FOR_UPDATE_CODE; int8store(start, table_map_for_update); start+= 8; } /* NOTE: When adding new status vars, please don't forget to update the MAX_SIZE_LOG_EVENT_STATUS in log_event.h and update function code_name in this file. Here there could be code like if (command-line-option-which-says-"log_this_variable" && inited) { *start++= Q_THIS_VARIABLE_CODE; int4store(start, this_variable); start+= 4; } */ /* Store length of status variables */ status_vars_len= (uint) (start-start_of_status); DBUG_ASSERT(status_vars_len <= MAX_SIZE_LOG_EVENT_STATUS); 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 */ event_length= (uint) (start-buf) + get_post_header_size_for_derived() + db_len + 1 + q_len; return (write_header(file, event_length) || my_b_safe_write(file, (uchar*) buf, QUERY_HEADER_LEN) || write_post_header_for_derived(file) || my_b_safe_write(file, (uchar*) start_of_status, (uint) (start-start_of_status)) || my_b_safe_write(file, (db) ? (uchar*) db : (uchar*)"", db_len + 1) || my_b_safe_write(file, (uchar*) query, q_len)) ? 1 : 0; } /** 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) { } /* SYNOPSIS Query_log_event::Query_log_event() thd_arg - thread handle 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. */ Query_log_event::Query_log_event(THD* thd_arg, const char* query_arg, ulong query_length, bool using_trans, bool suppress_use, THD::killed_state killed_status_arg) :Log_event(thd_arg, (thd_arg->thread_specific_used ? LOG_EVENT_THREAD_SPECIFIC_F : 0) | (suppress_use ? LOG_EVENT_SUPPRESS_USE_F : 0), using_trans), data_buf(0), query(query_arg), catalog(thd_arg->catalog), db(thd_arg->db), q_len((uint32) query_length), thread_id(thd_arg->thread_id), /* save the original thread id; we already know the server id */ slave_proxy_id(thd_arg->variables.pseudo_thread_id), flags2_inited(1), sql_mode_inited(1), charset_inited(1), sql_mode(thd_arg->variables.sql_mode), auto_increment_increment(thd_arg->variables.auto_increment_increment), auto_increment_offset(thd_arg->variables.auto_increment_offset), lc_time_names_number(thd_arg->variables.lc_time_names->number), charset_database_number(0), table_map_for_update((ulonglong)thd_arg->table_map_for_update) { time_t end_time; if (killed_status_arg == THD::KILLED_NO_VALUE) killed_status_arg= thd_arg->killed; error_code= (killed_status_arg == THD::NOT_KILLED) ? (thd_arg->is_error() ? thd_arg->main_da.sql_errno() : 0) : ((thd_arg->system_thread & SYSTEM_THREAD_DELAYED_INSERT) ? 0 : thd_arg->killed_errno()); time(&end_time); exec_time = (ulong) (end_time - thd_arg->start_time); /** @todo this means that if we have no catalog, then it is replicated as an existing catalog of length zero. is that safe? /sven */ catalog_len = (catalog) ? (uint32) strlen(catalog) : 0; /* status_vars_len is set just before writing the event */ db_len = (db) ? (uint32) strlen(db) : 0; if (thd_arg->variables.collation_database != thd_arg->db_charset) charset_database_number= thd_arg->variables.collation_database->number; /* If we don't use flags2 for anything else than options contained in thd_arg->options, it would be more efficient to flags2=thd_arg->options (OPTIONS_WRITTEN_TO_BIN_LOG would be used only at reading time). 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 &. */ flags2= (uint32) (thd_arg->options & OPTIONS_WRITTEN_TO_BIN_LOG); 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); DBUG_ASSERT(thd_arg->variables.character_set_client->mbminlen == 1); 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); 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; DBUG_PRINT("info",("Query_log_event has flags2: %lu sql_mode: %lu", (ulong) flags2, sql_mode)); } #endif /* MYSQL_CLIENT */ /* 2 utility functions for the next method */ /** 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>. */ static int get_str_len_and_pointer(const Log_event::Byte **src, const char **dst, uint *len, const Log_event::Byte *end) { if (*src >= end) return -1; // Will be UINT_MAX in two-complement arithmetics uint length= **src; if (length > 0) { if (*src + length >= end) return *src + length - end + 1; // Number of bytes missing *dst= (char *)*src + 1; // Will be copied later } *len= length; *src+= length + 1; return 0; } static void copy_str_and_move(const char **src, Log_event::Byte **dst, uint len) { memcpy(*dst, *src, len); *src= (const char *)*dst; (*dst)+= len; *(*dst)++= 0; } #ifndef DBUG_OFF static char const * code_name(int code) { static char buf[255]; 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"; case Q_TABLE_MAP_FOR_UPDATE_CODE: return "Q_TABLE_MAP_FOR_UPDATE_CODE"; } sprintf(buf, "CODE#%d", code); return buf; } #endif /** 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. */ #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; \ } \ } while (0) /** This is used by the SQL slave thread to prepare the event before execution. */ Query_log_event::Query_log_event(const char* buf, uint event_len, const Format_description_log_event *description_event, Log_event_type event_type) :Log_event(buf, description_event), data_buf(0), query(NullS), db(NullS), catalog_len(0), status_vars_len(0), flags2_inited(0), sql_mode_inited(0), charset_inited(0), auto_increment_increment(1), auto_increment_offset(1), time_zone_len(0), lc_time_names_number(0), charset_database_number(0), table_map_for_update(0) { ulong data_len; uint32 tmp; uint8 common_header_len, post_header_len; Log_event::Byte *start; const Log_event::Byte *end; bool catalog_nz= 1; DBUG_ENTER("Query_log_event::Query_log_event(char*,...)"); common_header_len= description_event->common_header_len; post_header_len= description_event->post_header_len[event_type-1]; DBUG_PRINT("info",("event_len: %u common_header_len: %d post_header_len: %d", 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); db_len = (uint)buf[Q_DB_LEN_OFFSET]; // TODO: add a check of all *_len vars 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) { status_vars_len= uint2korr(buf + Q_STATUS_VARS_LEN_OFFSET); /* 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. */ if (status_vars_len > min(data_len, MAX_SIZE_LOG_EVENT_STATUS)) { DBUG_PRINT("info", ("status_vars_len (%u) > data_len (%lu); query= 0", status_vars_len, data_len)); query= 0; DBUG_VOID_RETURN; } data_len-= status_vars_len; DBUG_PRINT("info", ("Query_log_event has status_vars_len: %u", (uint) status_vars_len)); tmp-= 2; } /* 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...) */ /* variable-part: the status vars; only in MySQL 5.0 */ 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;) { switch (*pos++) { case Q_FLAGS2_CODE: CHECK_SPACE(pos, end, 4); flags2_inited= 1; flags2= uint4korr(pos); DBUG_PRINT("info",("In Query_log_event, read flags2: %lu", (ulong) flags2)); pos+= 4; break; case Q_SQL_MODE_CODE: { #ifndef DBUG_OFF char buff[22]; #endif CHECK_SPACE(pos, end, 8); 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; } case Q_CATALOG_NZ_CODE: DBUG_PRINT("info", ("case Q_CATALOG_NZ_CODE; pos: 0x%lx; end: 0x%lx", (ulong) pos, (ulong) end)); if (get_str_len_and_pointer(&pos, &catalog, &catalog_len, end)) { DBUG_PRINT("info", ("query= 0")); query= 0; DBUG_VOID_RETURN; } break; case Q_AUTO_INCREMENT: CHECK_SPACE(pos, end, 4); auto_increment_increment= uint2korr(pos); auto_increment_offset= uint2korr(pos+2); pos+= 4; break; case Q_CHARSET_CODE: { CHECK_SPACE(pos, end, 6); charset_inited= 1; memcpy(charset, pos, 6); pos+= 6; break; } case Q_TIME_ZONE_CODE: { if (get_str_len_and_pointer(&pos, &time_zone_str, &time_zone_len, end)) { DBUG_PRINT("info", ("Q_TIME_ZONE_CODE: query= 0")); query= 0; DBUG_VOID_RETURN; } break; } case Q_CATALOG_CODE: /* for 5.0.x where 0<=x<=3 masters */ CHECK_SPACE(pos, end, 1); if ((catalog_len= *pos)) catalog= (char*) pos+1; // Will be copied later CHECK_SPACE(pos, end, catalog_len + 2); pos+= catalog_len+2; // leap over end 0 catalog_nz= 0; // catalog has end 0 in event break; case Q_LC_TIME_NAMES_CODE: CHECK_SPACE(pos, end, 2); lc_time_names_number= uint2korr(pos); pos+= 2; break; case Q_CHARSET_DATABASE_CODE: CHECK_SPACE(pos, end, 2); charset_database_number= uint2korr(pos); pos+= 2; break; case Q_TABLE_MAP_FOR_UPDATE_CODE: CHECK_SPACE(pos, end, 8); table_map_for_update= uint8korr(pos); pos+= 8; break; 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))); pos= (const uchar*) end; // Break loop } } #if !defined(MYSQL_CLIENT) && defined(HAVE_QUERY_CACHE) 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)))) #else if (!(start= data_buf = (Log_event::Byte*) my_malloc(catalog_len + 1 + time_zone_len + 1 + data_len + 1, MYF(MY_WME)))) #endif DBUG_VOID_RETURN; if (catalog_len) // If catalog is given { /** @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 */ if (likely(catalog_nz)) // true except if event comes from 5.0.0|1|2|3. copy_str_and_move(&catalog, &start, catalog_len); else { memcpy(start, catalog, catalog_len+1); // copy end 0 catalog= (const char *)start; start+= catalog_len+1; } } if (time_zone_len) copy_str_and_move(&time_zone_str, &start, time_zone_len); /** 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 */ /* A 2nd variable part; this is common to all versions */ memcpy((char*) start, end, data_len); // Copy db and query start[data_len]= '\0'; // End query with \0 (For safetly) db= (char *)start; query= (char *)(start + db_len + 1); q_len= data_len - db_len -1; DBUG_VOID_RETURN; } #ifdef MYSQL_CLIENT /** Query_log_event::print(). @todo print the catalog ?? */ void Query_log_event::print_query_header(IO_CACHE* file, PRINT_EVENT_INFO* print_event_info) { // TODO: print the catalog ?? char buff[40],*end; // Enough for SET TIMESTAMP bool different_db= 1; uint32 tmp; if (!print_event_info->short_form) { 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); } if (!(flags & LOG_EVENT_SUPPRESS_USE_F) && db) { if (different_db= memcmp(print_event_info->db, db, db_len + 1)) memcpy(print_event_info->db, db, db_len + 1); if (db[0] && different_db) my_b_printf(file, "use %s%s\n", db, print_event_info->delimiter); } end=int10_to_str((long) when, strmov(buff,"SET TIMESTAMP="),10); end= strmov(end, print_event_info->delimiter); *end++='\n'; my_b_write(file, (uchar*) buff, (uint) (end-buff)); if ((!print_event_info->thread_id_printed || ((flags & LOG_EVENT_THREAD_SPECIFIC_F) && thread_id != print_event_info->thread_id))) { // If --short-form, print deterministic value instead of pseudo_thread_id. my_b_printf(file,"SET @@session.pseudo_thread_id=%lu%s\n", short_form ? 999999999 : (ulong)thread_id, print_event_info->delimiter); print_event_info->thread_id= thread_id; print_event_info->thread_id_printed= 1; } /* 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). */ if (likely(flags2_inited)) /* likely as this will mainly read 5.0 logs */ { /* tmp is a bitmask of bits which have changed. */ if (likely(print_event_info->flags2_inited)) /* All bits which have changed */ tmp= (print_event_info->flags2) ^ flags2; else /* that's the first Query event we read */ { print_event_info->flags2_inited= 1; tmp= ~((uint32)0); /* all bits have changed */ } if (unlikely(tmp)) /* some bits have changed */ { bool need_comma= 0; my_b_printf(file, "SET "); 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); my_b_printf(file,"%s\n", print_event_info->delimiter); print_event_info->flags2= flags2; } } /* 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. */ if (likely(sql_mode_inited) && (unlikely(print_event_info->sql_mode != sql_mode || !print_event_info->sql_mode_inited))) { my_b_printf(file,"SET @@session.sql_mode=%lu%s\n", (ulong)sql_mode, print_event_info->delimiter); print_event_info->sql_mode= sql_mode; print_event_info->sql_mode_inited= 1; } if (print_event_info->auto_increment_increment != auto_increment_increment || print_event_info->auto_increment_offset != auto_increment_offset) { 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); print_event_info->auto_increment_increment= auto_increment_increment; print_event_info->auto_increment_offset= auto_increment_offset; } /* TODO: print the catalog when we feature SET CATALOG */ if (likely(charset_inited) && (unlikely(!print_event_info->charset_inited || bcmp((uchar*) print_event_info->charset, (uchar*) charset, 6)))) { CHARSET_INFO *cs_info= get_charset(uint2korr(charset), MYF(MY_WME)); if (cs_info) { /* for mysql client */ my_b_printf(file, "/*!\\C %s */%s\n", cs_info->csname, print_event_info->delimiter); } my_b_printf(file,"SET " "@@session.character_set_client=%d," "@@session.collation_connection=%d," "@@session.collation_server=%d" "%s\n", uint2korr(charset), uint2korr(charset+2), uint2korr(charset+4), print_event_info->delimiter); memcpy(print_event_info->charset, charset, 6); print_event_info->charset_inited= 1; } if (time_zone_len) { if (bcmp((uchar*) print_event_info->time_zone_str, (uchar*) time_zone_str, time_zone_len+1)) { my_b_printf(file,"SET @@session.time_zone='%s'%s\n", time_zone_str, print_event_info->delimiter); memcpy(print_event_info->time_zone_str, time_zone_str, time_zone_len+1); } } if (lc_time_names_number != print_event_info->lc_time_names_number) { my_b_printf(file, "SET @@session.lc_time_names=%d%s\n", lc_time_names_number, print_event_info->delimiter); print_event_info->lc_time_names_number= lc_time_names_number; } if (charset_database_number != print_event_info->charset_database_number) { if (charset_database_number) my_b_printf(file, "SET @@session.collation_database=%d%s\n", charset_database_number, print_event_info->delimiter); else my_b_printf(file, "SET @@session.collation_database=DEFAULT%s\n", print_event_info->delimiter); print_event_info->charset_database_number= charset_database_number; } } void Query_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { Write_on_release_cache cache(&print_event_info->head_cache, file); print_query_header(&cache, print_event_info); my_b_write(&cache, (uchar*) query, q_len); my_b_printf(&cache, "\n%s\n", print_event_info->delimiter); } #endif /* MYSQL_CLIENT */ /* Query_log_event::do_apply_event() */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) int Query_log_event::do_apply_event(Relay_log_info const *rli) { return do_apply_event(rli, query, q_len); } /** @todo Compare the values of "affected rows" around here. Something like: @code 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, ...); thd->query_error = 1; } @endcode 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... */ int Query_log_event::do_apply_event(Relay_log_info const *rli, const char *query_arg, uint32 q_len_arg) { LEX_STRING new_db; int expected_error,actual_error= 0; /* 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 Query_log_event::do_apply_event()). Same for thd->db. Thank you. */ thd->catalog= catalog_len ? (char *) catalog : (char *)""; 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' */ thd->variables.auto_increment_increment= auto_increment_increment; thd->variables.auto_increment_offset= auto_increment_offset; /* 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. */ const_cast<Relay_log_info*>(rli)->future_group_master_log_pos= log_pos; DBUG_PRINT("info", ("log_pos: %lu", (ulong) log_pos)); clear_all_errors(thd, const_cast<Relay_log_info*>(rli)); const_cast<Relay_log_info*>(rli)->clear_tables_to_lock(); /* 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 ::do_apply_event(), then the companion SET also have so we don't need to reset_one_shot_variables(). */ if (rpl_filter->db_ok(thd->db)) { thd->set_time((time_t)when); thd->query_length= q_len_arg; thd->query= (char*)query_arg; VOID(pthread_mutex_lock(&LOCK_thread_count)); thd->query_id = next_query_id(); VOID(pthread_mutex_unlock(&LOCK_thread_count)); thd->variables.pseudo_thread_id= thread_id; // for temp tables DBUG_PRINT("query",("%s",thd->query)); if (ignored_error_code((expected_error= error_code)) || !check_expected_error(thd,rli,expected_error)) { if (flags2_inited) /* all bits of thd->options which are 1 in OPTIONS_WRITTEN_TO_BIN_LOG must take their value from flags2. */ thd->options= flags2|(thd->options & ~OPTIONS_WRITTEN_TO_BIN_LOG); /* else, we are in a 3.23/4.0 binlog; we previously received a Rotate_log_event which reset thd->options and sql_mode etc, so nothing to do. */ /* 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 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). */ 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)))) { /* 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). */ set_slave_thread_default_charset(thd, rli); goto compare_errors; } thd->update_charset(); // for the charset change to take effect } } if (time_zone_len) { String tmp(time_zone_str, time_zone_len, &my_charset_bin); if (!(thd->variables.time_zone= my_tz_find(thd, &tmp))) { my_error(ER_UNKNOWN_TIME_ZONE, MYF(0), tmp.c_ptr()); thd->variables.time_zone= global_system_variables.time_zone; goto compare_errors; } } 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; 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; thd->table_map_for_update= (table_map)table_map_for_update; /* Execute the query (note that we bypass dispatch_command()) */ const char* found_semicolon= NULL; mysql_parse(thd, thd->query, thd->query_length, &found_semicolon); log_slow_statement(thd); } else { /* 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. */ if (mysql_test_parse_for_slave(thd, thd->query, thd->query_length)) clear_all_errors(thd, const_cast<Relay_log_info*>(rli)); /* Can ignore query */ else { rli->report(ERROR_LEVEL, expected_error, "\ Query partially completed on the master (error on master: %d) \ 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; \ START SLAVE; . Query: '%s'", expected_error, thd->query); thd->is_slave_error= 1; } goto end; } /* If the query was not ignored, it is printed to the general log */ if (!thd->is_error() || thd->main_da.sql_errno() != ER_SLAVE_IGNORED_TABLE) general_log_write(thd, COM_QUERY, thd->query, thd->query_length); compare_errors: /* If we expected a non-zero error code, and we don't get the same error code, and none of them should be ignored. */ actual_error= thd->is_error() ? thd->main_da.sql_errno() : 0; DBUG_PRINT("info",("expected_error: %d sql_errno: %d", expected_error, actual_error)); if ((expected_error != actual_error) && expected_error && !ignored_error_code(actual_error) && !ignored_error_code(expected_error)) { rli->report(ERROR_LEVEL, 0, "\ Query caused different errors on master and slave. \ Error on master: '%s' (%d), Error on slave: '%s' (%d). \ Default database: '%s'. Query: '%s'", ER_SAFE(expected_error), expected_error, actual_error ? thd->main_da.message() : "no error", actual_error, print_slave_db_safe(db), query_arg); thd->is_slave_error= 1; } /* If we get the same error code as expected, or they should be ignored. */ else if (expected_error == actual_error || ignored_error_code(actual_error)) { DBUG_PRINT("info",("error ignored")); clear_all_errors(thd, const_cast<Relay_log_info*>(rli)); thd->killed= THD::NOT_KILLED; } /* Other cases: mostly we expected no error and get one. */ else if (thd->is_slave_error || thd->is_fatal_error) { rli->report(ERROR_LEVEL, actual_error, "Error '%s' on query. Default database: '%s'. Query: '%s'", (actual_error ? thd->main_da.message() : "unexpected success or fatal error"), print_slave_db_safe(thd->db), query_arg); thd->is_slave_error= 1; } /* 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, ...); thd->is_slave_error = 1; } 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... 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. */ } /* End of if (db_ok(... */ end: VOID(pthread_mutex_lock(&LOCK_thread_count)); /* 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 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. */ thd->catalog= 0; thd->set_db(NULL, 0); /* will free the current database */ DBUG_PRINT("info", ("end: query= 0")); thd->query= 0; // just to be sure thd->query_length= 0; VOID(pthread_mutex_unlock(&LOCK_thread_count)); close_thread_tables(thd); /* 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; free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC)); return thd->is_slave_error; } int Query_log_event::do_update_pos(Relay_log_info *rli) { /* 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. */ if (thd->one_shot_set) { rli->inc_event_relay_log_pos(); return 0; } else return Log_event::do_update_pos(rli); } 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)); } #endif /************************************************************************** Start_log_event_v3 methods **************************************************************************/ #ifndef MYSQL_CLIENT Start_log_event_v3::Start_log_event_v3() :Log_event(), created(0), binlog_version(BINLOG_VERSION), artificial_event(0), dont_set_created(0) { memcpy(server_version, ::server_version, ST_SERVER_VER_LEN); } #endif /* Start_log_event_v3::pack_info() */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) void Start_log_event_v3::pack_info(Protocol *protocol) { 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: "); pos= int10_to_str(binlog_version, pos, 10); protocol->store(buf, (uint) (pos-buf), &my_charset_bin); } #endif /* Start_log_event_v3::print() */ #ifdef MYSQL_CLIENT void Start_log_event_v3::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { DBUG_ENTER("Start_log_event_v3::print"); Write_on_release_cache cache(&print_event_info->head_cache, file, Write_on_release_cache::FLUSH_F); if (!print_event_info->short_form) { 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); if (created) my_b_printf(&cache," at startup"); my_b_printf(&cache, "\n"); if (flags & LOG_EVENT_BINLOG_IN_USE_F) my_b_printf(&cache, "# Warning: this binlog was not closed properly. " "Most probably mysqld crashed writing it.\n"); } if (!artificial_event && created) { #ifdef WHEN_WE_HAVE_THE_RESET_CONNECTION_SQL_COMMAND /* 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). */ my_b_printf(&cache,"RESET CONNECTION%s\n", print_event_info->delimiter); #else my_b_printf(&cache,"ROLLBACK%s\n", print_event_info->delimiter); #endif } if (temp_buf && print_event_info->base64_output_mode != BASE64_OUTPUT_NEVER && !print_event_info->short_form) { if (print_event_info->base64_output_mode != BASE64_OUTPUT_DECODE_ROWS) my_b_printf(&cache, "BINLOG '\n"); print_base64(&cache, print_event_info, FALSE); print_event_info->printed_fd_event= TRUE; } DBUG_VOID_RETURN; } #endif /* MYSQL_CLIENT */ /* Start_log_event_v3::Start_log_event_v3() */ Start_log_event_v3::Start_log_event_v3(const char* buf, const Format_description_log_event *description_event) :Log_event(buf, description_event) { buf+= description_event->common_header_len; binlog_version= uint2korr(buf+ST_BINLOG_VER_OFFSET); memcpy(server_version, buf+ST_SERVER_VER_OFFSET, ST_SERVER_VER_LEN); // prevent overrun if log is corrupted on disk server_version[ST_SERVER_VER_LEN-1]= 0; 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); dont_set_created= 1; } /* Start_log_event_v3::write() */ #ifndef MYSQL_CLIENT bool Start_log_event_v3::write(IO_CACHE* file) { char buff[START_V3_HEADER_LEN]; int2store(buff + ST_BINLOG_VER_OFFSET,binlog_version); memcpy(buff + ST_SERVER_VER_OFFSET,server_version,ST_SERVER_VER_LEN); if (!dont_set_created) created= when= get_time(); int4store(buff + ST_CREATED_OFFSET,created); return (write_header(file, sizeof(buff)) || my_b_safe_write(file, (uchar*) buff, sizeof(buff))); } #endif #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) /** Start_log_event_v3::do_apply_event() . The master started IMPLEMENTATION - 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). @todo - 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. */ int Start_log_event_v3::do_apply_event(Relay_log_info const *rli) { DBUG_ENTER("Start_log_event_v3::do_apply_event"); switch (binlog_version) { 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'). */ if (created) { close_temporary_tables(thd); cleanup_load_tmpdir(); } break; /* Now the older formats; in that case load_tmpdir is cleaned up by the I/O thread. */ case 1: if (strncmp(rli->relay_log.description_event_for_exec->server_version, "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); } /* 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. */ break; default: /* this case is impossible */ DBUG_RETURN(1); } DBUG_RETURN(0); } #endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */ /*************************************************************************** Format_description_log_event methods ****************************************************************************/ /** Format_description_log_event 1st ctor. 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. @param binlog_version the binlog version for which we want to build 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. */ Format_description_log_event:: Format_description_log_event(uint8 binlog_ver, const char* server_ver) :Start_log_event_v3(), event_type_permutation(0) { binlog_version= binlog_ver; switch (binlog_ver) { case 4: /* MySQL 5.0 */ memcpy(server_version, ::server_version, ST_SERVER_VER_LEN); DBUG_EXECUTE_IF("pretend_version_50034_in_binlog", strmov(server_version, "5.0.34");); 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), MYF(MY_ZEROFILL)); /* 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; 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;); 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; post_header_len[INCIDENT_EVENT-1]= INCIDENT_HEADER_LEN; } 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 : LOG_EVENT_MINIMAL_HEADER_LEN; /* 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), MYF(0)); 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; } calc_server_version_split(); } /** 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 post-header starts. 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* description_event) :Start_log_event_v3(buf, description_event), event_type_permutation(0) { 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", common_header_len, number_of_event_types)); /* If alloc fails, we'll detect it in is_valid() */ post_header_len= (uint8*) my_memdup((uchar*)buf+ST_COMMON_HEADER_LEN_OFFSET+1, number_of_event_types* sizeof(*post_header_len), MYF(0)); calc_server_version_split(); /* In some previous versions, the events were given other event type id numbers than in the present version. When replicating from such a version, we therefore set up an array that maps those id numbers to the id numbers of the present server. If post_header_len is null, it means malloc failed, and is_valid will fail, so there is no need to do anything. The trees in which events have wrong id's are: mysql-5.1-wl1012.old mysql-5.1-wl2325-5.0-drop6p13-alpha mysql-5.1-wl2325-5.0-drop6 mysql-5.1-wl2325-5.0 mysql-5.1-wl2325-no-dd (this was found by grepping for two lines in sequence where the first matches "FORMAT_DESCRIPTION_EVENT," and the second matches "TABLE_MAP_EVENT," in log_event.h in all trees) In these trees, the following server_versions existed since TABLE_MAP_EVENT was introduced: 5.1.1-a_drop5p3 5.1.1-a_drop5p4 5.1.1-alpha 5.1.2-a_drop5p10 5.1.2-a_drop5p11 5.1.2-a_drop5p12 5.1.2-a_drop5p13 5.1.2-a_drop5p14 5.1.2-a_drop5p15 5.1.2-a_drop5p16 5.1.2-a_drop5p16b 5.1.2-a_drop5p16c 5.1.2-a_drop5p17 5.1.2-a_drop5p4 5.1.2-a_drop5p5 5.1.2-a_drop5p6 5.1.2-a_drop5p7 5.1.2-a_drop5p8 5.1.2-a_drop5p9 5.1.3-a_drop5p17 5.1.3-a_drop5p17b 5.1.3-a_drop5p17c 5.1.4-a_drop5p18 5.1.4-a_drop5p19 5.1.4-a_drop5p20 5.1.4-a_drop6p0 5.1.4-a_drop6p1 5.1.4-a_drop6p2 5.1.5-a_drop5p20 5.2.0-a_drop6p3 5.2.0-a_drop6p4 5.2.0-a_drop6p5 5.2.0-a_drop6p6 5.2.1-a_drop6p10 5.2.1-a_drop6p11 5.2.1-a_drop6p12 5.2.1-a_drop6p6 5.2.1-a_drop6p7 5.2.1-a_drop6p8 5.2.2-a_drop6p13 5.2.2-a_drop6p13-alpha 5.2.2-a_drop6p13b 5.2.2-a_drop6p13c (this was found by grepping for "mysql," in all historical versions of configure.in in the trees listed above). There are 5.1.1-alpha versions that use the new event id's, so we do not test that version string. So replication from 5.1.1-alpha with the other event id's to a new version does not work. Moreover, we can safely ignore the part after drop[56]. This allows us to simplify the big list above to the following regexes: 5\.1\.[1-5]-a_drop5.* 5\.1\.4-a_drop6.* 5\.2\.[0-2]-a_drop6.* This is what we test for in the 'if' below. */ if (post_header_len && server_version[0] == '5' && server_version[1] == '.' && server_version[3] == '.' && strncmp(server_version + 5, "-a_drop", 7) == 0 && ((server_version[2] == '1' && server_version[4] >= '1' && server_version[4] <= '5' && server_version[12] == '5') || (server_version[2] == '1' && server_version[4] == '4' && server_version[12] == '6') || (server_version[2] == '2' && server_version[4] >= '0' && server_version[4] <= '2' && server_version[12] == '6'))) { if (number_of_event_types != 22) { DBUG_PRINT("info", (" number_of_event_types=%d", number_of_event_types)); /* this makes is_valid() return false. */ my_free(post_header_len, MYF(MY_ALLOW_ZERO_PTR)); post_header_len= NULL; DBUG_VOID_RETURN; } static const uint8 perm[23]= { UNKNOWN_EVENT, START_EVENT_V3, QUERY_EVENT, STOP_EVENT, ROTATE_EVENT, INTVAR_EVENT, LOAD_EVENT, SLAVE_EVENT, CREATE_FILE_EVENT, APPEND_BLOCK_EVENT, EXEC_LOAD_EVENT, DELETE_FILE_EVENT, NEW_LOAD_EVENT, RAND_EVENT, USER_VAR_EVENT, FORMAT_DESCRIPTION_EVENT, TABLE_MAP_EVENT, PRE_GA_WRITE_ROWS_EVENT, PRE_GA_UPDATE_ROWS_EVENT, PRE_GA_DELETE_ROWS_EVENT, XID_EVENT, BEGIN_LOAD_QUERY_EVENT, EXECUTE_LOAD_QUERY_EVENT, }; event_type_permutation= perm; /* Since we use (permuted) event id's to index the post_header_len array, we need to permute the post_header_len array too. */ uint8 post_header_len_temp[23]; for (int i= 1; i < 23; i++) post_header_len_temp[perm[i] - 1]= post_header_len[i - 1]; for (int i= 0; i < 22; i++) post_header_len[i] = post_header_len_temp[i]; } DBUG_VOID_RETURN; } #ifndef MYSQL_CLIENT 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(). */ uchar buff[FORMAT_DESCRIPTION_HEADER_LEN]; int2store(buff + ST_BINLOG_VER_OFFSET,binlog_version); memcpy((char*) buff + ST_SERVER_VER_OFFSET,server_version,ST_SERVER_VER_LEN); if (!dont_set_created) created= when= get_time(); int4store(buff + ST_CREATED_OFFSET,created); buff[ST_COMMON_HEADER_LEN_OFFSET]= LOG_EVENT_HEADER_LEN; memcpy((char*) buff+ST_COMMON_HEADER_LEN_OFFSET+1, (uchar*) post_header_len, LOG_EVENT_TYPES); return (write_header(file, sizeof(buff)) || my_b_safe_write(file, buff, sizeof(buff))); } #endif #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) int Format_description_log_event::do_apply_event(Relay_log_info const *rli) { DBUG_ENTER("Format_description_log_event::do_apply_event"); #ifdef USING_TRANSACTIONS /* 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 flushing the binlog cache to the binlog. XA guarantees that master has rolled back. So we roll back. 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.ha_list) { /* This is not an error (XA is safe), just an information */ 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."); const_cast<Relay_log_info*>(rli)->cleanup_context(thd, 1); } #endif /* If this event comes from ourselves, there is no cleaning task to perform, we don't call Start_log_event_v3::do_apply_event() (this was just to update the log's description event). */ 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); } int Format_description_log_event::do_update_pos(Relay_log_info *rli) { /* save the information describing this binlog */ delete rli->relay_log.description_event_for_exec; rli->relay_log.description_event_for_exec= this; if (server_id == (uint32) ::server_id) { /* 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(); return 0; } else { return Log_event::do_update_pos(rli); } } Log_event::enum_skip_reason Format_description_log_event::do_shall_skip(Relay_log_info *rli) { return Log_event::EVENT_SKIP_NOT; } #endif /** 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])); } /************************************************************************** Load_log_event methods General note about Load_log_event: the binlogging of LOAD DATA INFILE is going to be changed in 5.0 (or maybe in 5.1; not decided yet). 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). **************************************************************************/ /* Load_log_event::pack_info() */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) uint Load_log_event::get_query_buffer_length() { return 5 + db_len + 3 + // "use DB; " 18 + fname_len + 2 + // "LOAD DATA INFILE 'file''" 7 + // LOCAL 9 + // " REPLACE or IGNORE " 13 + table_name_len*2 + // "INTO TABLE `table`" 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'" 21 + sql_ex.line_term_len*4 + 2 + // " LINES TERMINATED BY 'str'" 19 + sql_ex.line_start_len*4 + 2 + // " LINES STARTING BY 'str'" 15 + 22 + // " IGNORE xxx LINES" 3 + (num_fields-1)*2 + field_block_len; // " (field1, field2, ...)" } 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) { pos= strmov(pos, "use `"); memcpy(pos, db, db_len); pos= strmov(pos+db_len, "`; "); } pos= strmov(pos, "LOAD DATA "); if (fn_start) *fn_start= pos; if (check_fname_outside_temp_buf()) pos= strmov(pos, "LOCAL "); pos= strmov(pos, "INFILE '"); memcpy(pos, fname, fname_len); pos= strmov(pos+fname_len, "' "); if (sql_ex.opt_flags & REPLACE_FLAG) pos= strmov(pos, " REPLACE "); else if (sql_ex.opt_flags & IGNORE_FLAG) pos= strmov(pos, " IGNORE "); pos= strmov(pos ,"INTO"); if (fn_end) *fn_end= pos; pos= strmov(pos ," TABLE `"); memcpy(pos, table_name, table_name_len); pos+= table_name_len; /* We have to create all optinal fields as the default is not empty */ pos= strmov(pos, "` FIELDS TERMINATED BY "); 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); pos= strmov(pos, " ESCAPED BY "); pos= pretty_print_str(pos, sql_ex.escaped, sql_ex.escaped_len); pos= strmov(pos, " LINES TERMINATED BY "); pos= pretty_print_str(pos, sql_ex.line_term, sql_ex.line_term_len); if (sql_ex.line_start_len) { pos= strmov(pos, " STARTING BY "); pos= pretty_print_str(pos, sql_ex.line_start, sql_ex.line_start_len); } if ((long) skip_lines > 0) { pos= strmov(pos, " IGNORE "); pos= longlong10_to_str((longlong) skip_lines, pos, 10); pos= strmov(pos," LINES "); } if (num_fields) { uint i; const char *field= fields; pos= strmov(pos, " ("); for (i = 0; i < num_fields; i++) { if (i) { *pos++= ' '; *pos++= ','; } memcpy(pos, field, field_lens[i]); pos+= field_lens[i]; field+= field_lens[i] + 1; } *pos++= ')'; } *end= pos; } void Load_log_event::pack_info(Protocol *protocol) { char *buf, *end; if (!(buf= (char*) my_malloc(get_query_buffer_length(), MYF(MY_WME)))) return; print_query(TRUE, buf, &end, 0, 0); protocol->store(buf, end-buf, &my_charset_bin); my_free(buf, MYF(0)); } #endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */ #ifndef MYSQL_CLIENT /* Load_log_event::write_data_header() */ bool Load_log_event::write_data_header(IO_CACHE* file) { char buf[LOAD_HEADER_LEN]; int4store(buf + L_THREAD_ID_OFFSET, slave_proxy_id); 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); return my_b_safe_write(file, (uchar*)buf, LOAD_HEADER_LEN) != 0; } /* Load_log_event::write_data_body() */ bool Load_log_event::write_data_body(IO_CACHE* file) { if (sql_ex.write_data(file)) return 1; if (num_fields && fields && field_lens) { if (my_b_safe_write(file, (uchar*)field_lens, num_fields) || my_b_safe_write(file, (uchar*)fields, field_block_len)) return 1; } 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)); } /* Load_log_event::Load_log_event() */ 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, enum enum_duplicates handle_dup, bool ignore, bool using_trans) :Log_event(thd_arg, thd_arg->thread_specific_used ? LOG_EVENT_THREAD_SPECIFIC_F : 0, using_trans), thread_id(thd_arg->thread_id), slave_proxy_id(thd_arg->variables.pseudo_thread_id), num_fields(0),fields(0), field_lens(0),field_block_len(0), table_name(table_name_arg ? table_name_arg : ""), db(db_arg), fname(ex->file_name), local_fname(FALSE) { time_t end_time; time(&end_time); exec_time = (ulong) (end_time - thd_arg->start_time); /* db can never be a zero pointer in 4.0 */ db_len = (uint32) strlen(db); table_name_len = (uint32) strlen(table_name); 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; if (ex->dumpfile) sql_ex.opt_flags|= DUMPFILE_FLAG; if (ex->opt_enclosed) sql_ex.opt_flags|= OPT_ENCLOSED_FLAG; sql_ex.empty_flags= 0; switch (handle_dup) { case DUP_REPLACE: sql_ex.opt_flags|= REPLACE_FLAG; break; case DUP_UPDATE: // Impossible here case DUP_ERROR: break; } if (ignore) sql_ex.opt_flags|= IGNORE_FLAG; 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; skip_lines = ex->skip_lines; 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); } field_lens = (const uchar*)field_lens_buf.ptr(); fields = fields_buf.ptr(); } #endif /* !MYSQL_CLIENT */ /** @note The caller must do buf[event_len] = 0 before he starts using the constructed event. */ 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), table_name(0), db(0), fname(0), local_fname(FALSE) { DBUG_ENTER("Load_log_event"); /* 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 */ DBUG_VOID_RETURN; } /* Load_log_event::copy_log_event() */ int Load_log_event::copy_log_event(const char *buf, ulong event_len, int body_offset, const Format_description_log_event *description_event) { DBUG_ENTER("Load_log_event::copy_log_event"); uint data_len; char* buf_end = (char*)buf + event_len; /* this is the beginning of the post-header */ const char* data_head = buf + description_event->common_header_len; slave_proxy_id= thread_id= uint4korr(data_head + L_THREAD_ID_OFFSET); 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); if ((int) event_len < body_offset) DBUG_RETURN(1); /* 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. */ if (!(field_lens= (uchar*)sql_ex.init((char*)buf + body_offset, buf_end, buf[EVENT_TYPE_OFFSET] != LOAD_EVENT))) DBUG_RETURN(1); data_len = event_len - body_offset; if (num_fields > data_len) // simple sanity check against corruption DBUG_RETURN(1); for (uint i = 0; i < num_fields; i++) field_block_len += (uint)field_lens[i] + 1; fields = (char*)field_lens + num_fields; table_name = fields + field_block_len; db = table_name + table_name_len + 1; fname = db + db_len + 1; fname_len = strlen(fname); // null termination is accomplished by the caller doing buf[event_len]=0 DBUG_RETURN(0); } /* Load_log_event::print() */ #ifdef MYSQL_CLIENT void Load_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { print(file, print_event_info, 0); } void Load_log_event::print(FILE* file_arg, PRINT_EVENT_INFO* print_event_info, bool commented) { Write_on_release_cache cache(&print_event_info->head_cache, file_arg); DBUG_ENTER("Load_log_event::print"); if (!print_event_info->short_form) { print_header(&cache, print_event_info, FALSE); my_b_printf(&cache, "\tQuery\tthread_id=%ld\texec_time=%ld\n", thread_id, exec_time); } bool different_db= 1; if (db) { /* 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. */ if ((different_db= memcmp(print_event_info->db, db, db_len + 1)) && !commented) memcpy(print_event_info->db, db, db_len + 1); } if (db && db[0] && different_db) my_b_printf(&cache, "%suse %s%s\n", commented ? "# " : "", db, print_event_info->delimiter); if (flags & LOG_EVENT_THREAD_SPECIFIC_F) my_b_printf(&cache,"%sSET @@session.pseudo_thread_id=%lu%s\n", commented ? "# " : "", (ulong)thread_id, print_event_info->delimiter); my_b_printf(&cache, "%sLOAD DATA ", commented ? "# " : ""); if (check_fname_outside_temp_buf()) my_b_printf(&cache, "LOCAL "); my_b_printf(&cache, "INFILE '%-*s' ", fname_len, fname); if (sql_ex.opt_flags & REPLACE_FLAG) my_b_printf(&cache," REPLACE "); else if (sql_ex.opt_flags & IGNORE_FLAG) my_b_printf(&cache," IGNORE "); 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); if (sql_ex.opt_flags & OPT_ENCLOSED_FLAG) my_b_printf(&cache," OPTIONALLY "); my_b_printf(&cache, " ENCLOSED BY "); pretty_print_str(&cache, sql_ex.enclosed, sql_ex.enclosed_len); my_b_printf(&cache, " ESCAPED BY "); pretty_print_str(&cache, sql_ex.escaped, sql_ex.escaped_len); my_b_printf(&cache," LINES TERMINATED BY "); pretty_print_str(&cache, sql_ex.line_term, sql_ex.line_term_len); if (sql_ex.line_start) { my_b_printf(&cache," STARTING BY "); pretty_print_str(&cache, sql_ex.line_start, sql_ex.line_start_len); } if ((long) skip_lines > 0) my_b_printf(&cache, " IGNORE %ld LINES", (long) skip_lines); if (num_fields) { uint i; const char* field = fields; my_b_printf(&cache, " ("); for (i = 0; i < num_fields; i++) { if (i) my_b_printf(&cache, ","); my_b_printf(&cache, field); field += field_lens[i] + 1; } my_b_printf(&cache, ")"); } my_b_printf(&cache, "%s\n", print_event_info->delimiter); DBUG_VOID_RETURN; } #endif /* MYSQL_CLIENT */ #ifndef MYSQL_CLIENT /** Load_log_event::set_fields() @note 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. */ void Load_log_event::set_fields(const char* affected_db, List<Item> &field_list, Name_resolution_context *context) { uint i; const char* field = fields; for (i= 0; i < num_fields; i++) { field_list.push_back(new Item_field(context, affected_db, table_name, field)); field+= field_lens[i] + 1; } } #endif /* !MYSQL_CLIENT */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) /** Does the data loading job when executing a LOAD DATA on the slave. @param net @param rli @param use_rli_only_for_errors If set to 1, rli is provided to Load_log_event::exec_event 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 Execute_load_log_event::exec_event). If set to 0, rli is provided for full use, i.e. for error reports and position advancing. @todo fix this; this can be done by testing rules in Create_file_log_event::exec_event() and then discarding Append_block and al. @todo this is a bug - this needs to be moved to the I/O thread @retval 0 Success @retval 1 Failure */ int Load_log_event::do_apply_event(NET* net, Relay_log_info const *rli, bool use_rli_only_for_errors) { 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); DBUG_ASSERT(thd->query == 0); thd->query_length= 0; // Should not be needed thd->is_slave_error= 0; clear_all_errors(thd, const_cast<Relay_log_info*>(rli)); /* see Query_log_event::do_apply_event() and BUG#13360 */ DBUG_ASSERT(!rli->m_table_map.count()); /* Usually lex_start() is called by mysql_parse(), but we need it here as the present method does not call mysql_parse(). */ lex_start(thd); mysql_reset_thd_for_next_command(thd); if (!use_rli_only_for_errors) { /* Saved for InnoDB, see comment in Query_log_event::do_apply_event() */ const_cast<Relay_log_info*>(rli)->future_group_master_log_pos= log_pos; DBUG_PRINT("info", ("log_pos: %lu", (ulong) log_pos)); } /* 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 done by testing rules in Create_file_log_event::do_apply_event() 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). 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 ::do_apply_event(), then the companion SET also have so we don't need to reset_one_shot_variables(). */ if (rpl_filter->db_ok(thd->db)) { thd->set_time((time_t)when); VOID(pthread_mutex_lock(&LOCK_thread_count)); thd->query_id = next_query_id(); VOID(pthread_mutex_unlock(&LOCK_thread_count)); /* 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. */ mysql_reset_errors(thd, 0); TABLE_LIST tables; bzero((char*) &tables,sizeof(tables)); tables.db= thd->strmake(thd->db, thd->db_length); tables.alias = tables.table_name = (char*) table_name; tables.lock_type = TL_WRITE; tables.updating= 1; // the table will be opened in mysql_load if (rpl_filter->is_on() && !rpl_filter->tables_ok(thd->db, &tables)) { // 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]; char *end; enum enum_duplicates handle_dup; bool ignore= 0; char *load_data_query; /* Forge LOAD DATA INFILE query which will be used in SHOW PROCESS LIST and written to slave's binlog if binlogging is on. */ if (!(load_data_query= (char *)thd->alloc(get_query_buffer_length() + 1))) { /* This will set thd->fatal_error in case of OOM. So we surely will notice that something is wrong. */ goto error; } 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; if (sql_ex.opt_flags & REPLACE_FLAG) { handle_dup= DUP_REPLACE; } else if (sql_ex.opt_flags & IGNORE_FLAG) { ignore= 1; handle_dup= DUP_ERROR; } else { /* When replication is running fine, if it was DUP_ERROR on the master then we could choose IGNORE here, because if DUP_ERROR suceeded on master, and data is identical on the master and slave, then there should be no uniqueness errors on slave, so IGNORE is the same as DUP_ERROR. But in the unlikely case of uniqueness errors (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. If reading from net (a 3.23 master), mysql_load() will change this to IGNORE. */ handle_dup= DUP_ERROR; } /* 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; sql_exchange ex((char*)fname, sql_ex.opt_flags & DUMPFILE_FLAG); 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); ex.field_term= &field_term; ex.enclosed= &enclosed; ex.line_term= &line_term; ex.line_start= &line_start; ex.escaped= &escaped; 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; List<Item> field_list; thd->lex->select_lex.context.resolve_in_table_list_only(&tables); set_fields(tables.db, field_list, &thd->lex->select_lex.context); thd->variables.pseudo_thread_id= thread_id; 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; } /* It is safe to use tmp_list twice because we are not going to update it inside mysql_load(). */ List<Item> tmp_list; if (mysql_load(thd, &ex, &tables, field_list, tmp_list, tmp_list, handle_dup, ignore, net != 0)) thd->is_slave_error= 1; if (thd->cuted_fields) { /* log_pos is the position of the LOAD event in the master log */ 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)); } if (net) net->pkt_nr= thd->net.pkt_nr; } } else { /* 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); } error: thd->net.vio = 0; const char *remember_db= thd->db; VOID(pthread_mutex_lock(&LOCK_thread_count)); thd->catalog= 0; thd->set_db(NULL, 0); /* will free the current database */ thd->query= 0; thd->query_length= 0; VOID(pthread_mutex_unlock(&LOCK_thread_count)); close_thread_tables(thd); DBUG_EXECUTE_IF("LOAD_DATA_INFILE_has_fatal_error", thd->is_slave_error= 0; thd->is_fatal_error= 1;); if (thd->is_slave_error) { /* this err/sql_errno code is copy-paste from net_send_error() */ const char *err; int sql_errno; if (thd->is_error()) { err= thd->main_da.message(); sql_errno= thd->main_da.sql_errno(); } else { sql_errno=ER_UNKNOWN_ERROR; err=ER(sql_errno); } rli->report(ERROR_LEVEL, sql_errno,"\ Error '%s' running LOAD DATA INFILE on table '%s'. Default database: '%s'", err, (char*)table_name, print_slave_db_safe(remember_db)); free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC)); return 1; } free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC)); if (thd->is_fatal_error) { 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); return 1; } return ( use_rli_only_for_errors ? 0 : Log_event::do_apply_event(rli) ); } #endif /************************************************************************** Rotate_log_event methods **************************************************************************/ /* Rotate_log_event::pack_info() */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) void Rotate_log_event::pack_info(Protocol *protocol) { char buf1[256], buf[22]; String tmp(buf1, sizeof(buf1), log_cs); tmp.length(0); tmp.append(new_log_ident, ident_len); tmp.append(STRING_WITH_LEN(";pos=")); tmp.append(llstr(pos,buf)); protocol->store(tmp.ptr(), tmp.length(), &my_charset_bin); } #endif /* Rotate_log_event::print() */ #ifdef MYSQL_CLIENT void Rotate_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { char buf[22]; Write_on_release_cache cache(&print_event_info->head_cache, file, Write_on_release_cache::FLUSH_F); if (print_event_info->short_form) return; print_header(&cache, print_event_info, FALSE); my_b_printf(&cache, "\tRotate to "); if (new_log_ident) my_b_write(&cache, (uchar*) new_log_ident, (uint)ident_len); my_b_printf(&cache, " pos: %s\n", llstr(pos, buf)); } #endif /* MYSQL_CLIENT */ /* Rotate_log_event::Rotate_log_event() (2 constructors) */ #ifndef MYSQL_CLIENT Rotate_log_event::Rotate_log_event(const char* new_log_ident_arg, 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]; DBUG_ENTER("Rotate_log_event::Rotate_log_event(...,flags)"); DBUG_PRINT("enter",("new_log_ident: %s pos: %s flags: %lu", new_log_ident_arg, llstr(pos_arg, buff), (ulong) flags)); #endif if (flags & DUP_NAME) new_log_ident= my_strndup(new_log_ident_arg, ident_len, MYF(MY_WME)); DBUG_VOID_RETURN; } #endif Rotate_log_event::Rotate_log_event(const char* buf, uint event_len, const Format_description_log_event* description_event) :Log_event(buf, description_event) ,new_log_ident(0), flags(DUP_NAME) { DBUG_ENTER("Rotate_log_event::Rotate_log_event(char*,...)"); // The caller will ensure that event_len is what we have at EVENT_LEN_OFFSET uint8 header_size= description_event->common_header_len; uint8 post_header_len= description_event->post_header_len[ROTATE_EVENT-1]; uint ident_offset; if (event_len < header_size) DBUG_VOID_RETURN; buf += header_size; 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; set_if_smaller(ident_len,FN_REFLEN-1); new_log_ident= my_strndup(buf + ident_offset, (uint) ident_len, MYF(MY_WME)); DBUG_PRINT("debug", ("new_log_ident: '%s'", new_log_ident)); DBUG_VOID_RETURN; } /* Rotate_log_event::write() */ #ifndef MYSQL_CLIENT bool Rotate_log_event::write(IO_CACHE* file) { char buf[ROTATE_HEADER_LEN]; int8store(buf + R_POS_OFFSET, pos); return (write_header(file, ROTATE_HEADER_LEN + ident_len) || my_b_safe_write(file, (uchar*)buf, ROTATE_HEADER_LEN) || my_b_safe_write(file, (uchar*)new_log_ident, (uint) ident_len)); } #endif #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) /* Got a rotate log event from the master. This is mainly used so that we can later figure out the logname and position for the master. We can't rotate the slave's BINlog as this will cause infinitive rotations in a A -> B -> A setup. The NOTES below is a wrong comment which will disappear when 4.1 is merged. @retval 0 ok */ int Rotate_log_event::do_update_pos(Relay_log_info *rli) { DBUG_ENTER("Rotate_log_event::do_update_pos"); #ifndef DBUG_OFF char buf[32]; #endif DBUG_PRINT("info", ("server_id=%lu; ::server_id=%lu", (ulong) this->server_id, (ulong) ::server_id)); DBUG_PRINT("info", ("new_log_ident: %s", this->new_log_ident)); DBUG_PRINT("info", ("pos: %s", llstr(this->pos, buf))); pthread_mutex_lock(&rli->data_lock); rli->event_relay_log_pos= my_b_tell(rli->cur_log); /* 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: BEGIN ... ROTATE (a fake one) ... COMMIT or ROLLBACK 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 relay log, which shall not change the group positions. */ if ((server_id != ::server_id || rli->replicate_same_server_id) && !rli->is_in_group()) { 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)); memcpy(rli->group_master_log_name, new_log_ident, ident_len+1); rli->notify_group_master_log_name_update(); rli->group_master_log_pos= pos; 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(); rli->group_relay_log_pos= rli->event_relay_log_pos; DBUG_PRINT("info", ("new group_master_log_name: '%s' " "new group_master_log_pos: %lu", rli->group_master_log_name, (ulong) rli->group_master_log_pos)); /* Reset thd->options and sql_mode etc, because this could be the signal of a master's downgrade from 5.0 to 4.0. 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); set_slave_thread_default_charset(thd, rli); thd->variables.sql_mode= global_system_variables.sql_mode; thd->variables.auto_increment_increment= thd->variables.auto_increment_offset= 1; } pthread_mutex_unlock(&rli->data_lock); pthread_cond_broadcast(&rli->data_cond); flush_relay_log_info(rli); DBUG_RETURN(0); } Log_event::enum_skip_reason Rotate_log_event::do_shall_skip(Relay_log_info *rli) { enum_skip_reason reason= Log_event::do_shall_skip(rli); switch (reason) { case Log_event::EVENT_SKIP_NOT: case Log_event::EVENT_SKIP_COUNT: return Log_event::EVENT_SKIP_NOT; case Log_event::EVENT_SKIP_IGNORE: return Log_event::EVENT_SKIP_IGNORE; } DBUG_ASSERT(0); return Log_event::EVENT_SKIP_NOT; // To keep compiler happy } #endif /************************************************************************** Intvar_log_event methods **************************************************************************/ /* Intvar_log_event::pack_info() */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) void Intvar_log_event::pack_info(Protocol *protocol) { char buf[256], *pos; pos= strmake(buf, get_var_type_name(), sizeof(buf)-23); *pos++= '='; pos= longlong10_to_str(val, pos, -10); protocol->store(buf, (uint) (pos-buf), &my_charset_bin); } #endif /* Intvar_log_event::Intvar_log_event() */ Intvar_log_event::Intvar_log_event(const char* buf, const Format_description_log_event* description_event) :Log_event(buf, description_event) { buf+= description_event->common_header_len; type= buf[I_TYPE_OFFSET]; val= uint8korr(buf+I_VAL_OFFSET); } /* Intvar_log_event::get_var_type_name() */ const char* Intvar_log_event::get_var_type_name() { switch(type) { case LAST_INSERT_ID_EVENT: return "LAST_INSERT_ID"; case INSERT_ID_EVENT: return "INSERT_ID"; default: /* impossible */ return "UNKNOWN"; } } /* Intvar_log_event::write() */ #ifndef MYSQL_CLIENT bool Intvar_log_event::write(IO_CACHE* file) { uchar buf[9]; buf[I_TYPE_OFFSET]= (uchar) type; int8store(buf + I_VAL_OFFSET, val); return (write_header(file, sizeof(buf)) || my_b_safe_write(file, buf, sizeof(buf))); } #endif /* Intvar_log_event::print() */ #ifdef MYSQL_CLIENT void Intvar_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { char llbuff[22]; const char *msg; LINT_INIT(msg); Write_on_release_cache cache(&print_event_info->head_cache, file, Write_on_release_cache::FLUSH_F); if (!print_event_info->short_form) { print_header(&cache, print_event_info, FALSE); my_b_printf(&cache, "\tIntvar\n"); } my_b_printf(&cache, "SET "); switch (type) { case LAST_INSERT_ID_EVENT: msg="LAST_INSERT_ID"; break; case INSERT_ID_EVENT: msg="INSERT_ID"; break; case INVALID_INT_EVENT: default: // cannot happen msg="INVALID_INT"; break; } my_b_printf(&cache, "%s=%s%s\n", msg, llstr(val,llbuff), print_event_info->delimiter); } #endif /* Intvar_log_event::do_apply_event() */ #if defined(HAVE_REPLICATION)&& !defined(MYSQL_CLIENT) int Intvar_log_event::do_apply_event(Relay_log_info const *rli) { /* We are now in a statement until the associated query log event has been processed. */ const_cast<Relay_log_info*>(rli)->set_flag(Relay_log_info::IN_STMT); switch (type) { case LAST_INSERT_ID_EVENT: thd->stmt_depends_on_first_successful_insert_id_in_prev_stmt= 1; thd->first_successful_insert_id_in_prev_stmt= val; break; case INSERT_ID_EVENT: thd->force_one_auto_inc_interval(val); break; } return 0; } int Intvar_log_event::do_update_pos(Relay_log_info *rli) { rli->inc_event_relay_log_pos(); return 0; } Log_event::enum_skip_reason Intvar_log_event::do_shall_skip(Relay_log_info *rli) { /* 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. */ return continue_group(rli); } #endif /************************************************************************** Rand_log_event methods **************************************************************************/ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) void Rand_log_event::pack_info(Protocol *protocol) { 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); protocol->store(buf1, (uint) (pos-buf1), &my_charset_bin); } #endif Rand_log_event::Rand_log_event(const char* buf, const Format_description_log_event* description_event) :Log_event(buf, description_event) { buf+= description_event->common_header_len; seed1= uint8korr(buf+RAND_SEED1_OFFSET); seed2= uint8korr(buf+RAND_SEED2_OFFSET); } #ifndef MYSQL_CLIENT bool Rand_log_event::write(IO_CACHE* file) { uchar buf[16]; int8store(buf + RAND_SEED1_OFFSET, seed1); int8store(buf + RAND_SEED2_OFFSET, seed2); return (write_header(file, sizeof(buf)) || my_b_safe_write(file, buf, sizeof(buf))); } #endif #ifdef MYSQL_CLIENT void Rand_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { Write_on_release_cache cache(&print_event_info->head_cache, file, Write_on_release_cache::FLUSH_F); char llbuff[22],llbuff2[22]; if (!print_event_info->short_form) { print_header(&cache, print_event_info, FALSE); my_b_printf(&cache, "\tRand\n"); } my_b_printf(&cache, "SET @@RAND_SEED1=%s, @@RAND_SEED2=%s%s\n", llstr(seed1, llbuff),llstr(seed2, llbuff2), print_event_info->delimiter); } #endif /* MYSQL_CLIENT */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) int Rand_log_event::do_apply_event(Relay_log_info const *rli) { /* We are now in a statement until the associated query log event has been processed. */ const_cast<Relay_log_info*>(rli)->set_flag(Relay_log_info::IN_STMT); thd->rand.seed1= (ulong) seed1; thd->rand.seed2= (ulong) seed2; return 0; } int Rand_log_event::do_update_pos(Relay_log_info *rli) { rli->inc_event_relay_log_pos(); return 0; } Log_event::enum_skip_reason Rand_log_event::do_shall_skip(Relay_log_info *rli) { /* 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. */ return continue_group(rli); } #endif /* !MYSQL_CLIENT */ /************************************************************************** Xid_log_event methods **************************************************************************/ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) void Xid_log_event::pack_info(Protocol *protocol) { char buf[128], *pos; pos= strmov(buf, "COMMIT /* xid="); pos= longlong10_to_str(xid, pos, 10); pos= strmov(pos, " */"); protocol->store(buf, (uint) (pos-buf), &my_charset_bin); } #endif /** @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 */ Xid_log_event:: Xid_log_event(const char* buf, const Format_description_log_event *description_event) :Log_event(buf, description_event) { buf+= description_event->common_header_len; memcpy((char*) &xid, buf, sizeof(xid)); } #ifndef MYSQL_CLIENT bool Xid_log_event::write(IO_CACHE* file) { DBUG_EXECUTE_IF("do_not_write_xid", return 0;); return write_header(file, sizeof(xid)) || my_b_safe_write(file, (uchar*) &xid, sizeof(xid)); } #endif #ifdef MYSQL_CLIENT void Xid_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { Write_on_release_cache cache(&print_event_info->head_cache, file, Write_on_release_cache::FLUSH_F); if (!print_event_info->short_form) { char buf[64]; longlong10_to_str(xid, buf, 10); print_header(&cache, print_event_info, FALSE); my_b_printf(&cache, "\tXid = %s\n", buf); } my_b_printf(&cache, "COMMIT%s\n", print_event_info->delimiter); } #endif /* MYSQL_CLIENT */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) int Xid_log_event::do_apply_event(Relay_log_info const *rli) { /* For a slave Xid_log_event is COMMIT */ general_log_print(thd, COM_QUERY, "COMMIT /* implicit, from Xid_log_event */"); return end_trans(thd, COMMIT); } 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)); } #endif /* !MYSQL_CLIENT */ /************************************************************************** User_var_log_event methods **************************************************************************/ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) void User_var_log_event::pack_info(Protocol* protocol) { char *buf= 0; uint val_offset= 4 + name_len; uint event_len= val_offset; if (is_null) { if (!(buf= (char*) my_malloc(val_offset + 5, MYF(MY_WME)))) return; strmov(buf + val_offset, "NULL"); event_len= val_offset + 4; } else { switch (type) { case REAL_RESULT: double real_val; float8get(real_val, val); if (!(buf= (char*) my_malloc(val_offset + FLOATING_POINT_BUFFER, MYF(MY_WME)))) return; event_len+= my_sprintf(buf + val_offset, (buf + val_offset, "%.14g", real_val)); break; case INT_RESULT: if (!(buf= (char*) my_malloc(val_offset + 22, MYF(MY_WME)))) return; event_len= longlong10_to_str(uint8korr(val), buf + val_offset,-10)-buf; break; case DECIMAL_RESULT: { if (!(buf= (char*) my_malloc(val_offset + DECIMAL_MAX_STR_LENGTH, MYF(MY_WME)))) return; String str(buf+val_offset, DECIMAL_MAX_STR_LENGTH, &my_charset_bin); my_decimal dec; binary2my_decimal(E_DEC_FATAL_ERROR, (uchar*) (val+2), &dec, val[0], val[1]); my_decimal2string(E_DEC_FATAL_ERROR, &dec, 0, 0, 0, &str); event_len= str.length() + val_offset; break; } case STRING_RESULT: /* 15 is for 'COLLATE' and other chars */ buf= (char*) my_malloc(event_len+val_len*2+1+2*MY_CS_NAME_SIZE+15, MYF(MY_WME)); CHARSET_INFO *cs; if (!buf) return; if (!(cs= get_charset(charset_number, MYF(0)))) { strmov(buf+val_offset, "???"); event_len+= 3; } else { char *p= strxmov(buf + val_offset, "_", cs->csname, " ", NullS); p= str_to_hex(p, val, val_len); p= strxmov(p, " COLLATE ", cs->name, NullS); event_len= p-buf; } break; case ROW_RESULT: default: DBUG_ASSERT(1); return; } } buf[0]= '@'; buf[1]= '`'; memcpy(buf+2, name, name_len); buf[2+name_len]= '`'; buf[3+name_len]= '='; protocol->store(buf, event_len, &my_charset_bin); my_free(buf, MYF(0)); } #endif /* !MYSQL_CLIENT */ User_var_log_event:: User_var_log_event(const char* buf, const Format_description_log_event* description_event) :Log_event(buf, description_event) { buf+= description_event->common_header_len; name_len= uint4korr(buf); name= (char *) buf + UV_NAME_LEN_SIZE; buf+= UV_NAME_LEN_SIZE + name_len; is_null= (bool) *buf; if (is_null) { type= STRING_RESULT; charset_number= my_charset_bin.number; val_len= 0; val= 0; } else { 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 + UV_CHARSET_NUMBER_SIZE); val= (char *) (buf + UV_VAL_IS_NULL + UV_VAL_TYPE_SIZE + UV_CHARSET_NUMBER_SIZE + UV_VAL_LEN_SIZE); } } #ifndef MYSQL_CLIENT bool User_var_log_event::write(IO_CACHE* file) { char buf[UV_NAME_LEN_SIZE]; char buf1[UV_VAL_IS_NULL + UV_VAL_TYPE_SIZE + UV_CHARSET_NUMBER_SIZE + UV_VAL_LEN_SIZE]; uchar buf2[max(8, DECIMAL_MAX_FIELD_SIZE + 2)], *pos= buf2; uint buf1_length; ulong event_length; int4store(buf, name_len); if ((buf1[0]= is_null)) { buf1_length= 1; val_len= 0; // Length of 'pos' } else { 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; 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; decimal2bin((decimal_t*)val, buf2+2, buf2[0], buf2[1]); val_len= decimal_bin_size(buf2[0], buf2[1]) + 2; break; } case STRING_RESULT: pos= (uchar*) val; break; case ROW_RESULT: default: DBUG_ASSERT(1); return 0; } int4store(buf1 + 2 + UV_CHARSET_NUMBER_SIZE, val_len); buf1_length= 10; } /* Length of the whole event */ event_length= sizeof(buf)+ name_len + buf1_length + val_len; return (write_header(file, event_length) || 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)); } #endif /* User_var_log_event::print() */ #ifdef MYSQL_CLIENT void User_var_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { Write_on_release_cache cache(&print_event_info->head_cache, file, Write_on_release_cache::FLUSH_F); if (!print_event_info->short_form) { print_header(&cache, print_event_info, FALSE); my_b_printf(&cache, "\tUser_var\n"); } my_b_printf(&cache, "SET @`"); my_b_write(&cache, (uchar*) name, (uint) (name_len)); my_b_printf(&cache, "`"); if (is_null) { my_b_printf(&cache, ":=NULL%s\n", print_event_info->delimiter); } else { switch (type) { case REAL_RESULT: double real_val; char real_buf[FMT_G_BUFSIZE(14)]; float8get(real_val, val); my_sprintf(real_buf, (real_buf, "%.14g", real_val)); my_b_printf(&cache, ":=%s%s\n", real_buf, print_event_info->delimiter); break; case INT_RESULT: char int_buf[22]; longlong10_to_str(uint8korr(val), int_buf, -10); my_b_printf(&cache, ":=%s%s\n", int_buf, print_event_info->delimiter); break; case DECIMAL_RESULT: { char str_buf[200]; int str_len= sizeof(str_buf) - 1; int precision= (int)val[0]; int scale= (int)val[1]; decimal_digit_t dec_buf[10]; decimal_t dec; dec.len= 10; dec.buf= dec_buf; bin2decimal((uchar*) val+2, &dec, precision, scale); decimal2string(&dec, str_buf, &str_len, 0, 0, 0); str_buf[str_len]= 0; my_b_printf(&cache, ":=%s%s\n", str_buf, print_event_info->delimiter); break; } case STRING_RESULT: { /* 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. */ char *hex_str; CHARSET_INFO *cs; if (!(hex_str= (char *)my_alloca(2*val_len+1+2))) // 2 hex digits / byte break; // no error, as we are 'void' str_to_hex(hex_str, val, val_len); /* 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. */ my_b_printf(&cache, ":=???%s\n", print_event_info->delimiter); else my_b_printf(&cache, ":=_%s %s COLLATE `%s`%s\n", cs->csname, hex_str, cs->name, print_event_info->delimiter); my_afree(hex_str); } break; case ROW_RESULT: default: DBUG_ASSERT(1); return; } } } #endif /* User_var_log_event::do_apply_event() */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) int User_var_log_event::do_apply_event(Relay_log_info const *rli) { Item *it= 0; CHARSET_INFO *charset; if (!(charset= get_charset(charset_number, MYF(MY_WME)))) return 1; LEX_STRING user_var_name; user_var_name.str= name; user_var_name.length= name_len; double real_val; longlong int_val; /* We are now in a statement until the associated query log event has been processed. */ const_cast<Relay_log_info*>(rli)->set_flag(Relay_log_info::IN_STMT); if (is_null) { it= new Item_null(); } else { switch (type) { case REAL_RESULT: float8get(real_val, val); it= new Item_float(real_val, 0); val= (char*) &real_val; // Pointer to value in native format val_len= 8; break; case INT_RESULT: int_val= (longlong) uint8korr(val); it= new Item_int(int_val); val= (char*) &int_val; // Pointer to value in native format val_len= 8; break; case DECIMAL_RESULT: { Item_decimal *dec= new Item_decimal((uchar*) val+2, val[0], val[1]); it= dec; val= (char *)dec->val_decimal(NULL); val_len= sizeof(my_decimal); break; } case STRING_RESULT: it= new Item_string(val, val_len, charset); break; case ROW_RESULT: default: DBUG_ASSERT(1); return 0; } } Item_func_set_user_var e(user_var_name, it); /* Item_func_set_user_var can't substitute something else on its place => 0 can be passed as last argument (reference on item) Fix_fields() can fail, in which case a call of update_hash() might crash the server, so if fix fields fails, we just return with an error. */ if (e.fix_fields(thd, 0)) return 1; /* 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. */ e.update_hash(val, val_len, type, charset, DERIVATION_IMPLICIT, 0); free_root(thd->mem_root,0); return 0; } int User_var_log_event::do_update_pos(Relay_log_info *rli) { rli->inc_event_relay_log_pos(); return 0; } Log_event::enum_skip_reason User_var_log_event::do_shall_skip(Relay_log_info *rli) { /* 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. */ return continue_group(rli); } #endif /* !MYSQL_CLIENT */ /************************************************************************** Slave_log_event methods **************************************************************************/ #ifdef HAVE_REPLICATION #ifdef MYSQL_CLIENT void Unknown_log_event::print(FILE* file_arg, PRINT_EVENT_INFO* print_event_info) { Write_on_release_cache cache(&print_event_info->head_cache, file_arg); if (print_event_info->short_form) return; print_header(&cache, print_event_info, FALSE); my_b_printf(&cache, "\n# %s", "Unknown event\n"); } #endif #ifndef MYSQL_CLIENT void Slave_log_event::pack_info(Protocol *protocol) { char buf[256+HOSTNAME_LENGTH], *pos; 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="); pos= longlong10_to_str(master_pos, pos, 10); protocol->store(buf, pos-buf, &my_charset_bin); } #endif /* !MYSQL_CLIENT */ #ifndef MYSQL_CLIENT /** @todo re-write this better without holding both locks at the same time */ Slave_log_event::Slave_log_event(THD* thd_arg, Relay_log_info* rli) :Log_event(thd_arg, 0, 0) , mem_pool(0), master_host(0) { DBUG_ENTER("Slave_log_event"); if (!rli->inited) // QQ When can this happen ? DBUG_VOID_RETURN; Master_info* mi = rli->mi; // 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); master_log_len = strlen(rli->group_master_log_name); // 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)))) { 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; memcpy(master_log, rli->group_master_log_name, master_log_len + 1); master_port = mi->port; master_pos = rli->group_master_log_pos; DBUG_PRINT("info", ("master_log: %s pos: %lu", master_log, (ulong) master_pos)); } 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; } #endif /* !MYSQL_CLIENT */ Slave_log_event::~Slave_log_event() { my_free(mem_pool, MYF(MY_ALLOW_ZERO_PTR)); } #ifdef MYSQL_CLIENT void Slave_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { Write_on_release_cache cache(&print_event_info->head_cache, file); char llbuff[22]; if (print_event_info->short_form) return; print_header(&cache, print_event_info, FALSE); my_b_printf(&cache, "\n\ Slave: master_host: '%s' master_port: %d master_log: '%s' master_pos: %s\n", master_host, master_port, master_log, llstr(master_pos, llbuff)); } #endif /* MYSQL_CLIENT */ int Slave_log_event::get_data_size() { return master_host_len + master_log_len + 1 + SL_MASTER_HOST_OFFSET; } #ifndef MYSQL_CLIENT bool Slave_log_event::write(IO_CACHE* file) { ulong event_length= get_data_size(); int8store(mem_pool + SL_MASTER_POS_OFFSET, master_pos); int2store(mem_pool + SL_MASTER_PORT_OFFSET, master_port); // log and host are already there return (write_header(file, event_length) || my_b_safe_write(file, (uchar*) mem_pool, event_length)); } #endif 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) { master_host = 0; return; } master_log_len = strlen(master_log); } /** 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) { if (event_len < LOG_EVENT_HEADER_LEN) return; event_len -= LOG_EVENT_HEADER_LEN; 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); } #ifndef MYSQL_CLIENT int Slave_log_event::do_apply_event(Relay_log_info const *rli) { if (mysql_bin_log.is_open()) mysql_bin_log.write(this); return 0; } #endif /* !MYSQL_CLIENT */ /************************************************************************** Stop_log_event methods **************************************************************************/ /* Stop_log_event::print() */ #ifdef MYSQL_CLIENT void Stop_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { Write_on_release_cache cache(&print_event_info->head_cache, file, Write_on_release_cache::FLUSH_F); if (print_event_info->short_form) return; print_header(&cache, print_event_info, FALSE); my_b_printf(&cache, "\tStop\n"); } #endif /* MYSQL_CLIENT */ #ifndef MYSQL_CLIENT /* 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 Start_log_event_v3::do_apply_event(), not here. Because if we come here, the master was sane. */ int Stop_log_event::do_update_pos(Relay_log_info *rli) { /* We do not want to update master_log pos because we get a rotate event before stop, so by now group_master_log_name is set to the next log. If we updated it, we will have incorrect master coordinates and this could give false triggers in MASTER_POS_WAIT() that we have reached the target position when in fact we have not. */ if (thd->options & OPTION_BEGIN) rli->inc_event_relay_log_pos(); else { rli->inc_group_relay_log_pos(0); flush_relay_log_info(rli); } return 0; } #endif /* !MYSQL_CLIENT */ #endif /* HAVE_REPLICATION */ /************************************************************************** Create_file_log_event methods **************************************************************************/ /* Create_file_log_event ctor */ #ifndef MYSQL_CLIENT 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, bool ignore, uchar* block_arg, uint block_len_arg, bool using_trans) :Load_log_event(thd_arg,ex,db_arg,table_name_arg,fields_arg,handle_dup, ignore, using_trans), fake_base(0), block(block_arg), event_buf(0), block_len(block_len_arg), file_id(thd_arg->file_id = mysql_bin_log.next_file_id()) { DBUG_ENTER("Create_file_log_event"); sql_ex.force_new_format(); DBUG_VOID_RETURN; } /* Create_file_log_event::write_data_body() */ bool Create_file_log_event::write_data_body(IO_CACHE* file) { bool res; if ((res= Load_log_event::write_data_body(file)) || fake_base) return res; return (my_b_safe_write(file, (uchar*) "", 1) || my_b_safe_write(file, (uchar*) block, block_len)); } /* Create_file_log_event::write_data_header() */ bool Create_file_log_event::write_data_header(IO_CACHE* file) { bool res; uchar buf[CREATE_FILE_HEADER_LEN]; if ((res= Load_log_event::write_data_header(file)) || fake_base) return res; int4store(buf + CF_FILE_ID_OFFSET, file_id); return my_b_safe_write(file, buf, CREATE_FILE_HEADER_LEN) != 0; } /* Create_file_log_event::write_base() */ bool Create_file_log_event::write_base(IO_CACHE* file) { bool res; fake_base= 1; // pretend we are Load event res= write(file); fake_base= 0; return res; } #endif /* !MYSQL_CLIENT */ /* Create_file_log_event ctor */ 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) { 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]; if (!(event_buf= (char*) my_memdup(buf, len, MYF(MY_WME))) || 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)) DBUG_VOID_RETURN; if (description_event->binlog_version!=1) { 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); if (len < block_offset) DBUG_VOID_RETURN; block = (uchar*)buf + block_offset; block_len = len - block_offset; } else { sql_ex.force_new_format(); inited_from_old = 1; } DBUG_VOID_RETURN; } /* Create_file_log_event::print() */ #ifdef MYSQL_CLIENT void Create_file_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info, bool enable_local) { Write_on_release_cache cache(&print_event_info->head_cache, file); if (print_event_info->short_form) { if (enable_local && check_fname_outside_temp_buf()) Load_log_event::print(file, print_event_info); return; } if (enable_local) { Load_log_event::print(file, print_event_info, !check_fname_outside_temp_buf()); /* That one is for "file_id: etc" below: in mysqlbinlog we want the #, in SHOW BINLOG EVENTS we don't. */ my_b_printf(&cache, "#"); } my_b_printf(&cache, " file_id: %d block_len: %d\n", file_id, block_len); } void Create_file_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { print(file, print_event_info, 0); } #endif /* MYSQL_CLIENT */ /* Create_file_log_event::pack_info() */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) void Create_file_log_event::pack_info(Protocol *protocol) { char buf[NAME_LEN*2 + 30 + 21*2], *pos; pos= strmov(buf, "db="); memcpy(pos, db, db_len); pos= strmov(pos + db_len, ";table="); memcpy(pos, table_name, table_name_len); pos= strmov(pos + table_name_len, ";file_id="); pos= int10_to_str((long) file_id, pos, 10); pos= strmov(pos, ";block_len="); pos= int10_to_str((long) block_len, pos, 10); protocol->store(buf, (uint) (pos-buf), &my_charset_bin); } #endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */ /* Create_file_log_event::do_apply_event() */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) int Create_file_log_event::do_apply_event(Relay_log_info const *rli) { char proc_info[17+FN_REFLEN+10], *fname_buf; char *ext; int fd = -1; IO_CACHE file; int error = 1; bzero((char*)&file, sizeof(file)); fname_buf= strmov(proc_info, "Making temp file "); ext= slave_load_file_stem(fname_buf, file_id, server_id, ".info"); thd_proc_info(thd, proc_info); 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 || init_io_cache(&file, fd, IO_SIZE, WRITE_CACHE, (my_off_t)0, 0, MYF(MY_WME|MY_NABP))) { rli->report(ERROR_LEVEL, my_errno, "Error in Create_file event: could not open file '%s'", fname_buf); goto err; } // a trick to avoid allocating another buffer fname= fname_buf; fname_len= (uint) (strmov(ext, ".data") - fname); if (write_base(&file)) { strmov(ext, ".info"); // to have it right in the error message rli->report(ERROR_LEVEL, my_errno, "Error in Create_file event: could not write to file '%s'", fname_buf); goto err; } end_io_cache(&file); my_close(fd, MYF(0)); // fname_buf now already has .data, not .info, because we did our trick 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) { rli->report(ERROR_LEVEL, my_errno, "Error in Create_file event: could not open file '%s'", fname_buf); goto err; } if (my_write(fd, (uchar*) block, block_len, MYF(MY_WME+MY_NABP))) { rli->report(ERROR_LEVEL, my_errno, "Error in Create_file event: write to '%s' failed", fname_buf); goto err; } error=0; // Everything is ok err: if (error) end_io_cache(&file); if (fd >= 0) my_close(fd, MYF(0)); thd_proc_info(thd, 0); return error == 0; } #endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */ /************************************************************************** Append_block_log_event methods **************************************************************************/ /* Append_block_log_event ctor */ #ifndef MYSQL_CLIENT Append_block_log_event::Append_block_log_event(THD *thd_arg, const char *db_arg, uchar *block_arg, uint block_len_arg, bool using_trans) :Log_event(thd_arg,0, using_trans), block(block_arg), block_len(block_len_arg), file_id(thd_arg->file_id), db(db_arg) { } #endif /* Append_block_log_event ctor */ 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) { 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) DBUG_VOID_RETURN; file_id= uint4korr(buf + common_header_len + AB_FILE_ID_OFFSET); block= (uchar*)buf + total_header_len; block_len= len - total_header_len; DBUG_VOID_RETURN; } /* Append_block_log_event::write() */ #ifndef MYSQL_CLIENT bool Append_block_log_event::write(IO_CACHE* file) { uchar buf[APPEND_BLOCK_HEADER_LEN]; int4store(buf + AB_FILE_ID_OFFSET, file_id); return (write_header(file, APPEND_BLOCK_HEADER_LEN + block_len) || my_b_safe_write(file, buf, APPEND_BLOCK_HEADER_LEN) || my_b_safe_write(file, (uchar*) block, block_len)); } #endif /* Append_block_log_event::print() */ #ifdef MYSQL_CLIENT void Append_block_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { Write_on_release_cache cache(&print_event_info->head_cache, file); if (print_event_info->short_form) return; 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); } #endif /* MYSQL_CLIENT */ /* Append_block_log_event::pack_info() */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) void Append_block_log_event::pack_info(Protocol *protocol) { char buf[256]; uint length; length= (uint) my_sprintf(buf, (buf, ";file_id=%u;block_len=%u", file_id, block_len)); protocol->store(buf, length, &my_charset_bin); } /* Append_block_log_event::get_create_or_append() */ int Append_block_log_event::get_create_or_append() const { return 0; /* append to the file, fail if not exists */ } /* Append_block_log_event::do_apply_event() */ int Append_block_log_event::do_apply_event(Relay_log_info const *rli) { char proc_info[17+FN_REFLEN+10], *fname= proc_info+17; int fd; int error = 1; DBUG_ENTER("Append_block_log_event::do_apply_event"); fname= strmov(proc_info, "Making temp file "); slave_load_file_stem(fname, file_id, server_id, ".data"); thd_proc_info(thd, proc_info); 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) { rli->report(ERROR_LEVEL, my_errno, "Error in %s event: could not create file '%s'", get_type_str(), fname); goto err; } } else if ((fd = my_open(fname, O_WRONLY | O_APPEND | O_BINARY | O_NOFOLLOW, MYF(MY_WME))) < 0) { rli->report(ERROR_LEVEL, my_errno, "Error in %s event: could not open file '%s'", get_type_str(), fname); goto err; } if (my_write(fd, (uchar*) block, block_len, MYF(MY_WME+MY_NABP))) { rli->report(ERROR_LEVEL, my_errno, "Error in %s event: write to '%s' failed", get_type_str(), fname); goto err; } error=0; err: if (fd >= 0) my_close(fd, MYF(0)); thd_proc_info(thd, 0); DBUG_RETURN(error); } #endif /************************************************************************** Delete_file_log_event methods **************************************************************************/ /* Delete_file_log_event ctor */ #ifndef MYSQL_CLIENT 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) { } #endif /* Delete_file_log_event ctor */ 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) { 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)) return; file_id= uint4korr(buf + common_header_len + DF_FILE_ID_OFFSET); } /* Delete_file_log_event::write() */ #ifndef MYSQL_CLIENT bool Delete_file_log_event::write(IO_CACHE* file) { uchar buf[DELETE_FILE_HEADER_LEN]; int4store(buf + DF_FILE_ID_OFFSET, file_id); return (write_header(file, sizeof(buf)) || my_b_safe_write(file, buf, sizeof(buf))); } #endif /* Delete_file_log_event::print() */ #ifdef MYSQL_CLIENT void Delete_file_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { Write_on_release_cache cache(&print_event_info->head_cache, file); if (print_event_info->short_form) return; print_header(&cache, print_event_info, FALSE); my_b_printf(&cache, "\n#Delete_file: file_id=%u\n", file_id); } #endif /* MYSQL_CLIENT */ /* Delete_file_log_event::pack_info() */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) void Delete_file_log_event::pack_info(Protocol *protocol) { char buf[64]; uint length; length= (uint) my_sprintf(buf, (buf, ";file_id=%u", (uint) file_id)); protocol->store(buf, (int32) length, &my_charset_bin); } #endif /* Delete_file_log_event::do_apply_event() */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) int Delete_file_log_event::do_apply_event(Relay_log_info const *rli) { char fname[FN_REFLEN+10]; char *ext= slave_load_file_stem(fname, file_id, server_id, ".data"); (void) my_delete(fname, MYF(MY_WME)); strmov(ext, ".info"); (void) my_delete(fname, MYF(MY_WME)); return 0; } #endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */ /************************************************************************** Execute_load_log_event methods **************************************************************************/ /* Execute_load_log_event ctor */ #ifndef MYSQL_CLIENT Execute_load_log_event::Execute_load_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) { } #endif /* Execute_load_log_event ctor */ 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) { 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)) return; file_id= uint4korr(buf + common_header_len + EL_FILE_ID_OFFSET); } /* Execute_load_log_event::write() */ #ifndef MYSQL_CLIENT bool Execute_load_log_event::write(IO_CACHE* file) { uchar buf[EXEC_LOAD_HEADER_LEN]; int4store(buf + EL_FILE_ID_OFFSET, file_id); return (write_header(file, sizeof(buf)) || my_b_safe_write(file, buf, sizeof(buf))); } #endif /* Execute_load_log_event::print() */ #ifdef MYSQL_CLIENT void Execute_load_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { Write_on_release_cache cache(&print_event_info->head_cache, file); if (print_event_info->short_form) return; print_header(&cache, print_event_info, FALSE); my_b_printf(&cache, "\n#Exec_load: file_id=%d\n", file_id); } #endif /* Execute_load_log_event::pack_info() */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) void Execute_load_log_event::pack_info(Protocol *protocol) { char buf[64]; uint length; length= (uint) my_sprintf(buf, (buf, ";file_id=%u", (uint) file_id)); protocol->store(buf, (int32) length, &my_charset_bin); } /* Execute_load_log_event::do_apply_event() */ int Execute_load_log_event::do_apply_event(Relay_log_info const *rli) { char fname[FN_REFLEN+10]; char *ext; int fd; int error= 1; IO_CACHE file; Load_log_event *lev= 0; ext= slave_load_file_stem(fname, file_id, server_id, ".info"); if ((fd = my_open(fname, O_RDONLY | O_BINARY | O_NOFOLLOW, MYF(MY_WME))) < 0 || init_io_cache(&file, fd, IO_SIZE, READ_CACHE, (my_off_t)0, 0, MYF(MY_WME|MY_NABP))) { rli->report(ERROR_LEVEL, my_errno, "Error in Exec_load event: could not open file '%s'", fname); goto err; } if (!(lev = (Load_log_event*)Log_event::read_log_event(&file, (pthread_mutex_t*)0, rli->relay_log.description_event_for_exec)) || lev->get_type_code() != NEW_LOAD_EVENT) { rli->report(ERROR_LEVEL, 0, "Error in Exec_load event: " "file '%s' appears corrupted", fname); goto err; } lev->thd = thd; /* lev->do_apply_event should use rli only for errors i.e. should not advance rli's position. lev->do_apply_event is the place where the table is loaded (it calls mysql_load()). */ const_cast<Relay_log_info*>(rli)->future_group_master_log_pos= log_pos; if (lev->do_apply_event(0,rli,1)) { /* 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. */ char *tmp= my_strdup(rli->last_error().message, MYF(MY_WME)); if (tmp) { rli->report(ERROR_LEVEL, rli->last_error().number, "%s. Failed executing load from '%s'", tmp, fname); my_free(tmp,MYF(0)); } goto err; } /* 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; } (void) my_delete(fname, MYF(MY_WME)); memcpy(ext, ".data", 6); (void) my_delete(fname, MYF(MY_WME)); error = 0; err: delete lev; if (fd >= 0) { my_close(fd, MYF(0)); end_io_cache(&file); } return error; } #endif /* defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */ /************************************************************************** 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, uchar* 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) int Begin_load_query_log_event::get_create_or_append() const { return 1; /* create the file */ } #endif /* defined( HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */ #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 /************************************************************************** Execute_load_query_log_event methods **************************************************************************/ #ifndef MYSQL_CLIENT Execute_load_query_log_event:: Execute_load_query_log_event(THD *thd_arg, const char* query_arg, 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): Query_log_event(thd_arg, query_arg, query_length_arg, using_trans, suppress_use, killed_err_arg), 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; } #ifndef MYSQL_CLIENT bool Execute_load_query_log_event::write_post_header_for_derived(IO_CACHE* file) { uchar buf[EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN]; int4store(buf, file_id); int4store(buf + 4, fn_pos_start); int4store(buf + 4 + 4, fn_pos_end); *(buf + 4 + 4 + 4)= (uchar) dup_handling; return my_b_safe_write(file, buf, EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN); } #endif #ifdef MYSQL_CLIENT void Execute_load_query_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info) { print(file, print_event_info, 0); } /** Prints the query as LOAD DATA LOCAL and with rewritten filename. */ void Execute_load_query_log_event::print(FILE* file, PRINT_EVENT_INFO* print_event_info, const char *local_fname) { Write_on_release_cache cache(&print_event_info->head_cache, file); print_query_header(&cache, print_event_info); if (local_fname) { my_b_write(&cache, (uchar*) query, fn_pos_start); my_b_printf(&cache, " LOCAL INFILE \'"); my_b_printf(&cache, local_fname); my_b_printf(&cache, "\'"); if (dup_handling == LOAD_DUP_REPLACE) my_b_printf(&cache, " REPLACE"); my_b_printf(&cache, " INTO"); my_b_write(&cache, (uchar*) query + fn_pos_end, q_len-fn_pos_end); my_b_printf(&cache, "\n%s\n", print_event_info->delimiter); } else { my_b_write(&cache, (uchar*) query, q_len); my_b_printf(&cache, "\n%s\n", print_event_info->delimiter); } if (!print_event_info->short_form) my_b_printf(&cache, "# file_id: %d \n", file_id); } #endif #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) void Execute_load_query_log_event::pack_info(Protocol *protocol) { char *buf, *pos; if (!(buf= (char*) my_malloc(9 + db_len + q_len + 10 + 21, MYF(MY_WME)))) 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 Execute_load_query_log_event::do_apply_event(Relay_log_info const *rli) { char *p; char *buf; char *fname; char *fname_end; int error; buf= (char*) my_malloc(q_len + 1 - (fn_pos_end - fn_pos_start) + (FN_REFLEN + 10) + 10 + 8 + 5, MYF(MY_WME)); DBUG_EXECUTE_IF("LOAD_DATA_INFILE_has_fatal_error", my_free(buf, MYF(0)); buf= NULL;); /* Replace filename and LOCAL keyword in query before executing it */ if (buf == NULL) { rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR, ER(ER_SLAVE_FATAL_ERROR), "Not enough memory"); return 1; } p= buf; memcpy(p, query, fn_pos_start); p+= fn_pos_start; fname= (p= strmake(p, STRING_WITH_LEN(" INFILE \'"))); p= slave_load_file_stem(p, file_id, server_id, ".data"); fname_end= p= strend(p); // Safer than p=p+5 *(p++)='\''; switch (dup_handling) { case LOAD_DUP_IGNORE: p= strmake(p, STRING_WITH_LEN(" IGNORE")); break; case LOAD_DUP_REPLACE: p= strmake(p, STRING_WITH_LEN(" REPLACE")); break; default: /* Ordinary load data */ break; } p= strmake(p, STRING_WITH_LEN(" INTO")); p= strmake(p, query+fn_pos_end, q_len-fn_pos_end); error= Query_log_event::do_apply_event(rli, buf, p-buf); /* Forging file name for deletion in same buffer */ *fname_end= 0; /* 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)); my_free(buf, MYF(MY_ALLOW_ZERO_PTR)); return error; } #endif /************************************************************************** sql_ex_info methods **************************************************************************/ /* sql_ex_info::write_data() */ bool sql_ex_info::write_data(IO_CACHE* file) { if (new_format()) { 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) || my_b_safe_write(file,(uchar*) &opt_flags,1)); } else { /** @todo This is sensitive to field padding. We should write a char[7], not an old_sql_ex. /sven */ 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; return my_b_safe_write(file, (uchar*) &old_ex, sizeof(old_ex)) != 0; } } /* sql_ex_info::init() */ const char *sql_ex_info::init(const char *buf, const char *buf_end, bool use_new_format) { 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. */ if (read_str(&buf, buf_end, &field_term, &field_term_len) || read_str(&buf, buf_end, &enclosed, &enclosed_len) || read_str(&buf, buf_end, &line_term, &line_term_len) || read_str(&buf, buf_end, &line_start, &line_start_len) || read_str(&buf, buf_end, &escaped, &escaped_len)) 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; } /************************************************************************** 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), m_row_count(0), m_table(tbl_arg), m_table_id(tid), m_width(tbl_arg ? tbl_arg->s->fields : 1), m_rows_buf(0), m_rows_cur(0), m_rows_end(0), m_flags(0) #ifdef HAVE_REPLICATION , m_curr_row(NULL), m_curr_row_end(NULL), m_key(NULL) #endif { /* We allow a special form of dummy event when the table, and cols are null and the table id is ~0UL. This is a temporary solution, to be able to terminate a started statement in the binary log: the extraneous events will be removed in the future. */ DBUG_ASSERT(tbl_arg && tbl_arg->s && tid != ~0UL || !tbl_arg && !cols && tid == ~0UL); 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); /* if bitmap_init fails, caught in is_valid() */ if (likely(!bitmap_init(&m_cols, m_width <= sizeof(m_bitbuf)*8 ? m_bitbuf : NULL, m_width, false))) { /* Cols can be zero if this is a dummy binrows event */ if (likely(cols != NULL)) { memcpy(m_cols.bitmap, cols->bitmap, no_bytes_in_map(cols)); create_last_word_mask(&m_cols); } } else { // Needed because bitmap_init() does not set it to null on failure m_cols.bitmap= 0; } } #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), m_row_count(0), #ifndef MYSQL_CLIENT m_table(NULL), #endif m_table_id(0), m_rows_buf(0), m_rows_cur(0), m_rows_end(0) #if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) , m_curr_row(NULL), m_curr_row_end(NULL), m_key(NULL) #endif { 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]; DBUG_PRINT("enter",("event_len: %u common_header_len: %d " "post_header_len: %d", 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 { m_table_id= (ulong) uint6korr(post_start); post_start+= RW_FLAGS_OFFSET; } m_flags= uint2korr(post_start); uchar const *const var_start= (const uchar *)buf + common_header_len + post_header_len; uchar const *const ptr_width= var_start; uchar *ptr_after_width= (uchar*) ptr_width; DBUG_PRINT("debug", ("Reading from %p", ptr_after_width)); m_width = net_field_length(&ptr_after_width); 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, m_width, false))) { DBUG_PRINT("debug", ("Reading from %p", ptr_after_width)); memcpy(m_cols.bitmap, ptr_after_width, (m_width + 7) / 8); create_last_word_mask(&m_cols); ptr_after_width+= (m_width + 7) / 8; DBUG_DUMP("m_cols", (uchar*) m_cols.bitmap, no_bytes_in_map(&m_cols)); } else { // Needed because bitmap_init() does not set it to null on failure m_cols.bitmap= NULL; DBUG_VOID_RETURN; } 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)); /* if bitmap_init fails, caught in is_valid() */ if (likely(!bitmap_init(&m_cols_ai, m_width <= sizeof(m_bitbuf_ai)*8 ? m_bitbuf_ai : NULL, m_width, false))) { DBUG_PRINT("debug", ("Reading from %p", ptr_after_width)); memcpy(m_cols_ai.bitmap, ptr_after_width, (m_width + 7) / 8); create_last_word_mask(&m_cols_ai); ptr_after_width+= (m_width + 7) / 8; DBUG_DUMP("m_cols_ai", (uchar*) m_cols_ai.bitmap, no_bytes_in_map(&m_cols_ai)); } else { // Needed because bitmap_init() does not set it to null on failure m_cols_ai.bitmap= 0; DBUG_VOID_RETURN; } } const uchar* const ptr_rows_data= (const uchar*) ptr_after_width; size_t const data_size= event_len - (ptr_rows_data - (const uchar *) buf); DBUG_PRINT("info",("m_table_id: %lu m_flags: %d m_width: %lu data_size: %lu", m_table_id, m_flags, m_width, (ulong) data_size)); m_rows_buf= (uchar*) my_malloc(data_size, MYF(MY_WME)); if (likely((bool)m_rows_buf)) { #if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) m_curr_row= m_rows_buf; #endif 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(). my_free((uchar*)m_rows_buf, MYF(MY_ALLOW_ZERO_PTR)); } int Rows_log_event::get_data_size() { int const type_code= get_type_code(); uchar buf[sizeof(m_width)+1]; uchar *end= net_store_length(buf, (m_width + 7) / 8); 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; } #ifndef MYSQL_CLIENT int Rows_log_event::do_add_row_data(uchar *row_data, size_t length) { /* 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 */ DBUG_ENTER("Rows_log_event::do_add_row_data"); DBUG_PRINT("enter", ("row_data: 0x%lx length: %lu", (ulong) row_data, (ulong) length)); /* Don't print debug messages when running valgrind since they can trigger false warnings. */ #ifndef HAVE_purify DBUG_DUMP("row_data", row_data, min(length, 32)); #endif DBUG_ASSERT(m_rows_buf <= m_rows_cur); DBUG_ASSERT(!m_rows_buf || m_rows_end && m_rows_buf < m_rows_end); DBUG_ASSERT(m_rows_cur <= m_rows_end); /* The cast will always work since m_rows_cur <= m_rows_end */ if (static_cast<size_t>(m_rows_end - m_rows_cur) <= length) { size_t const block_size= 1024; my_ptrdiff_t const cur_size= m_rows_cur - m_rows_buf; my_ptrdiff_t const new_alloc= block_size * ((cur_size + length + block_size - 1) / block_size); uchar* const new_buf= (uchar*)my_realloc((uchar*)m_rows_buf, (uint) new_alloc, MYF(MY_ALLOW_ZERO_PTR|MY_WME)); 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; } DBUG_ASSERT(m_rows_cur + length <= m_rows_end); memcpy(m_rows_cur, row_data, length); m_rows_cur+= length; m_row_count++; DBUG_RETURN(0); } #endif #if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) int Rows_log_event::do_apply_event(Relay_log_info const *rli) { DBUG_ENTER("Rows_log_event::do_apply_event(Relay_log_info*)"); int error= 0; /* 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 success. */ if (m_table_id == ~0UL) { /* This one is supposed to be set: just an extra check so that nothing strange has happened. */ DBUG_ASSERT(get_flags(STMT_END_F)); const_cast<Relay_log_info*>(rli)->clear_tables_to_lock(); close_thread_tables(thd); thd->clear_error(); DBUG_RETURN(0); } /* 'thd' has been set by exec_relay_log_event(), just before calling do_apply_event(). We still check here to prevent future coding errors. */ DBUG_ASSERT(rli->sql_thd == thd); /* 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. */ if (!thd->lock) { /* Lock_tables() reads the contents of thd->lex, so they must be initialized. We also call the mysql_reset_thd_for_next_command(), since this is the logical start of the next "statement". Note that this call might reset the value of current_stmt_binlog_row_based, so we need to do any changes to that value after this function. */ lex_start(thd); mysql_reset_thd_for_next_command(thd); /* 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. */ if (!thd->current_stmt_binlog_row_based && mysql_bin_log.is_open() && (thd->options & OPTION_BIN_LOG)) { thd->set_current_stmt_binlog_row_based(); } /* 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)); if (simple_open_n_lock_tables(thd, rli->tables_to_lock)) { uint actual_error= thd->main_da.sql_errno(); if (thd->is_slave_error || thd->is_fatal_error) { /* Error reporting borrowed from Query_log_event with many excessive simplifications (we don't honour --slave-skip-errors) */ rli->report(ERROR_LEVEL, actual_error, "Error '%s' on opening tables", (actual_error ? thd->main_da.message() : "unexpected success or fatal error")); thd->is_slave_error= 1; } const_cast<Relay_log_info*>(rli)->clear_tables_to_lock(); DBUG_RETURN(actual_error); } /* 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. */ { RPL_TABLE_LIST *ptr= rli->tables_to_lock; 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; thd->is_slave_error= 1; const_cast<Relay_log_info*>(rli)->clear_tables_to_lock(); DBUG_RETURN(ERR_BAD_TABLE_DEF); } } } /* ... and then we add all the tables to the table map and remove them from tables to lock. We also invalidate the query cache for all the tables, since they will now be changed. 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. */ for (TABLE_LIST *ptr= rli->tables_to_lock ; ptr ; ptr= ptr->next_global) { const_cast<Relay_log_info*>(rli)->m_table_map.set_table(ptr->table_id, ptr->table); } #ifdef HAVE_QUERY_CACHE query_cache.invalidate_locked_for_write(rli->tables_to_lock); #endif } TABLE* table= m_table= const_cast<Relay_log_info*>(rli)->m_table_map.get_table(m_table_id); DBUG_PRINT("debug", ("m_table: 0x%lx, m_table_id: %lu", (ulong) m_table, m_table_id)); if (table) { /* table == NULL means that this table should not be replicated (this was set up by Table_map_log_event::do_apply_event() which tested replicate-* rules). */ /* 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); /* 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. */ const_cast<Relay_log_info*>(rli)->set_flag(Relay_log_info::IN_STMT); if ( m_width == table->s->fields && bitmap_is_set_all(&m_cols)) set_flags(COMPLETE_ROWS_F); /* 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); this->slave_exec_mode= slave_exec_mode_options; // fix the mode // Do event specific preparations error= do_before_row_operations(rli); // row processing loop while (error == 0 && m_curr_row < m_rows_end) { /* 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; error= do_exec_row(rli); table->in_use = old_thd; switch (error) { case 0: break; /* 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. */ case HA_ERR_RECORD_CHANGED: case HA_ERR_RECORD_DELETED: case HA_ERR_KEY_NOT_FOUND: case HA_ERR_END_OF_FILE: 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: DBUG_PRINT("info", ("error: %s", HA_ERR(error))); 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; } break; default: thd->is_slave_error= 1; break; } /* 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. */ 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)); 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 DBUG_EXECUTE_IF("STOP_SLAVE_after_first_Rows_event", const_cast<Relay_log_info*>(rli)->abort_slave= 1;); error= do_after_row_operations(rli, error); if (!cache_stmt) { DBUG_PRINT("info", ("Marked that we need to keep log")); thd->options|= OPTION_KEEP_LOG; } } // if (table) /* We need to delay this clear until here bacause unpack_current_row() uses master-side table definitions stored in rli. */ if (rli->tables_to_lock && get_flags(STMT_END_F)) const_cast<Relay_log_info*>(rli)->clear_tables_to_lock(); if (error) { /* error has occured during the transaction */ slave_rows_error_report(ERROR_LEVEL, error, rli, thd, table, get_type_str(), RPL_LOG_NAME, (ulong) log_pos); } if (error) { /* 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. rollback at the caller along with sbr. */ thd->reset_current_stmt_binlog_row_based(); const_cast<Relay_log_info*>(rli)->cleanup_context(thd, error); thd->is_slave_error= 1; DBUG_RETURN(error); } /* 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 Relay_log_info::last_event_start_time and all its occurrences. */ const_cast<Relay_log_info*>(rli)->last_event_start_time= my_time(0); } DBUG_RETURN(0); } Log_event::enum_skip_reason Rows_log_event::do_shall_skip(Relay_log_info *rli) { /* 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); } int Rows_log_event::do_update_pos(Relay_log_info *rli) { DBUG_ENTER("Rows_log_event::do_update_pos"); int error= 0; DBUG_PRINT("info", ("flags: %s", get_flags(STMT_END_F) ? "STMT_END_F " : "")); 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); /* 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); /* 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. */ thd->reset_current_stmt_binlog_row_based(); rli->cleanup_context(thd, 0); if (error == 0) { /* 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); /* 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 rli->report(ERROR_LEVEL, error, "Error in %s event: commit of row events failed, " "table `%s`.`%s`", get_type_str(), m_table->s->db.str, m_table->s->table_name.str); } else { rli->inc_event_relay_log_pos(); } DBUG_RETURN(error); } #endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */ #ifndef MYSQL_CLIENT bool Rows_log_event::write_data_header(IO_CACHE *file) { uchar buf[ROWS_HEADER_LEN]; // No need to init the buffer DBUG_ASSERT(m_table_id != ~0UL); 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. */ uchar sbuf[sizeof(m_width)]; my_ptrdiff_t const data_size= m_rows_cur - m_rows_buf; bool res= false; uchar *const sbuf_end= net_store_length(sbuf, (size_t) m_width); DBUG_ASSERT(static_cast<size_t>(sbuf_end - sbuf) <= sizeof(sbuf)); DBUG_DUMP("m_width", sbuf, (size_t) (sbuf_end - sbuf)); res= res || my_b_safe_write(file, sbuf, (size_t) (sbuf_end - sbuf)); 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, no_bytes_in_map(&m_cols)); /* TODO[refactor write]: Remove the "down cast" here (and elsewhere). */ if (get_type_code() == UPDATE_ROWS_EVENT) { 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, no_bytes_in_map(&m_cols_ai)); } DBUG_DUMP("rows", m_rows_buf, data_size); res= res || my_b_safe_write(file, m_rows_buf, (size_t) data_size); return res; } #endif #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) void Rows_log_event::pack_info(Protocol *protocol) { char buf[256]; char const *const flagstr= get_flags(STMT_END_F) ? " flags: STMT_END_F" : ""; size_t bytes= my_snprintf(buf, sizeof(buf), "table_id: %lu%s", m_table_id, flagstr); protocol->store(buf, bytes, &my_charset_bin); } #endif #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); my_b_printf(head, "\t%s: table id %lu%s\n", name, m_table_id, last_stmt_event ? " flags: STMT_END_F" : ""); print_base64(body, print_event_info, !last_stmt_event); } if (get_flags(STMT_END_F)) { copy_event_cache_to_file_and_reinit(head, file); copy_event_cache_to_file_and_reinit(body, file); } } #endif /************************************************************************** Table_map_log_event member functions and support functions **************************************************************************/ /** @page How replication of field metadata works. When a table map is created, the master first calls Table_map_log_event::save_field_metadata() which calculates how many values will be in the field metadata. Only those fields that require the 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. 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. 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. */ #if !defined(MYSQL_CLIENT) /** 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. */ 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++) index+= m_table->s->field[i]->save_field_metadata(&m_field_metadata[index]); DBUG_RETURN(index); } #endif /* !defined(MYSQL_CLIENT) */ /* 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, true), 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), 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) { DBUG_ASSERT(m_table_id != ~0UL); /* 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; DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master", m_data_size= 6;); 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 /* If malloc fails, caught in is_valid() */ if ((m_memory= (uchar*) my_malloc(m_colcnt, MYF(MY_WME)))) { m_coltype= reinterpret_cast<uchar*>(m_memory); for (unsigned int i= 0 ; i < m_table->s->fields ; ++i) m_coltype[i]= m_table->field[i]->type(); } /* 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, &m_field_metadata, (m_colcnt * 2), NULL); 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; 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); } #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 m_table(NULL), #endif 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) { unsigned int bytes_read= 0; 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]; DBUG_PRINT("info",("event_len: %u common_header_len: %d post_header_len: %d", event_len, common_header_len, post_header_len)); /* Don't print debug messages when running valgrind since they can trigger false warnings. */ #ifndef HAVE_purify DBUG_DUMP("event buffer", (uchar*) buf, event_len); #endif /* 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); m_table_id= (ulong) uint6korr(post_start); post_start+= TM_FLAGS_OFFSET; } DBUG_ASSERT(m_table_id != ~0UL); 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 */ uchar const *const ptr_dblen= (uchar const*)vpart + 0; m_dblen= *(uchar*) ptr_dblen; /* Length of database name + counter + terminating null */ uchar const *const ptr_tbllen= ptr_dblen + m_dblen + 2; m_tbllen= *(uchar*) ptr_tbllen; /* Length of table name + counter + terminating null */ uchar const *const ptr_colcnt= ptr_tbllen + m_tbllen + 2; uchar *ptr_after_colcnt= (uchar*) ptr_colcnt; m_colcnt= net_field_length(&ptr_after_colcnt); DBUG_PRINT("info",("m_dblen: %lu off: %ld m_tbllen: %lu off: %ld m_colcnt: %lu off: %ld", (ulong) m_dblen, (long) (ptr_dblen-(const uchar*)vpart), (ulong) m_tbllen, (long) (ptr_tbllen-(const uchar*)vpart), m_colcnt, (long) (ptr_colcnt-(const uchar*)vpart))); /* Allocate mem for all fields in one go. If fails, caught in is_valid() */ 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); if (m_memory) { /* Copy the different parts into their memory */ 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); memcpy(m_coltype, ptr_after_colcnt, m_colcnt); 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); DBUG_ASSERT(m_field_metadata_size <= (m_colcnt * 2)); 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); } } DBUG_VOID_RETURN; } #endif Table_map_log_event::~Table_map_log_event() { my_free(m_meta_memory, MYF(MY_ALLOW_ZERO_PTR)); 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) int Table_map_log_event::do_apply_event(Relay_log_info const *rli) { RPL_TABLE_LIST *table_list; char *db_mem, *tname_mem; size_t dummy_len; void *memory; DBUG_ENTER("Table_map_log_event::do_apply_event(Relay_log_info*)"); 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); 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))) DBUG_RETURN(HA_ERR_OUT_OF_MEM); 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); int error= 0; if (rli->sql_thd->slave_thread /* filtering is for slave only */ && (!rpl_filter->db_ok(table_list->db) || (rpl_filter->is_on() && !rpl_filter->tables_ok("", table_list)))) { my_free(memory, MYF(MY_WME)); } else { DBUG_ASSERT(thd->lex->query_tables != table_list); /* Use placement new to construct the table_def instance in the memory allocated for it inside table_list. The memory allocated by the table_def structure (i.e., not the memory allocated *for* the table_def structure) is released inside Relay_log_info::clear_tables_to_lock() by calling the table_def destructor explicitly. */ new (&table_list->m_tabledef) table_def(m_coltype, m_colcnt, m_field_metadata, m_field_metadata_size, m_null_bits); table_list->m_tabledef_valid= TRUE; /* We record in the slave's information that the table should be locked by linking the table into the list of tables to lock. */ table_list->next_global= table_list->next_local= rli->tables_to_lock; const_cast<Relay_log_info*>(rli)->tables_to_lock= table_list; const_cast<Relay_log_info*>(rli)->tables_to_lock_count++; /* 'memory' is freed in clear_tables_to_lock */ } DBUG_RETURN(error); } Log_event::enum_skip_reason Table_map_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); } int Table_map_log_event::do_update_pos(Relay_log_info *rli) { rli->inc_event_relay_log_pos(); return 0; } #endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */ #ifndef MYSQL_CLIENT bool Table_map_log_event::write_data_header(IO_CACHE *file) { DBUG_ASSERT(m_table_id != ~0UL); uchar buf[TABLE_MAP_HEADER_LEN]; 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); uchar const dbuf[]= { (uchar) m_dblen }; uchar const tbuf[]= { (uchar) m_tbllen }; 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)); /* Store the size of the field metadata. */ uchar mbuf[sizeof(m_field_metadata_size)]; uchar *const mbuf_end= net_store_length(mbuf, m_field_metadata_size); return (my_b_safe_write(file, dbuf, sizeof(dbuf)) || my_b_safe_write(file, (const uchar*)m_dbnam, m_dblen+1) || my_b_safe_write(file, tbuf, sizeof(tbuf)) || my_b_safe_write(file, (const uchar*)m_tblnam, m_tbllen+1) || my_b_safe_write(file, cbuf, (size_t) (cbuf_end - cbuf)) || 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)); } #endif #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) /* Print some useful information for the SHOW BINARY LOG information field. */ #if defined(HAVE_REPLICATION) && !defined(MYSQL_CLIENT) void Table_map_log_event::pack_info(Protocol *protocol) { char buf[256]; size_t bytes= my_snprintf(buf, sizeof(buf), "table_id: %lu (%s.%s)", m_table_id, m_dbnam, m_tblnam); protocol->store(buf, bytes, &my_charset_bin); } #endif #endif #ifdef MYSQL_CLIENT void Table_map_log_event::print(FILE *file, PRINT_EVENT_INFO *print_event_info) { if (!print_event_info->short_form) { 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); } } #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) int Write_rows_log_event::do_before_row_operations(const Slave_reporting_capability *const) { int error= 0; /** todo: to introduce a property for the event (handler?) which forces applying the event in the replace (idempotent) fashion. */ 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. */ } m_table->file->ha_start_bulk_insert(0); /* 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). */ m_table->timestamp_field_type= TIMESTAMP_NO_AUTO_SET; return error; } int Write_rows_log_event::do_after_row_operations(const Slave_reporting_capability *const, int error) { int local_error= 0; 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 */ } if ((local_error= m_table->file->ha_end_bulk_insert())) { m_table->file->print_error(local_error, MYF(0)); } return error? error : local_error; } #if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) /* 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; } /** 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; } /** Write the current row into event's table. 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. 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. 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. @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 Rows_log_event::write_row(const Relay_log_info *const rli, const bool overwrite) { DBUG_ENTER("write_row"); DBUG_ASSERT(m_table != NULL && thd != NULL); TABLE *table= m_table; // pointer to event's table int error; int keynum; auto_afree_ptr<char> key(NULL); /* fill table->record[0] with default values */ if ((error= prepare_record(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? #ifndef DBUG_OFF DBUG_DUMP("record[0]", table->record[0], table->s->reclength); DBUG_PRINT_BITSET("debug", "write_set = %s", table->write_set); DBUG_PRINT_BITSET("debug", "read_set = %s", table->read_set); #endif /* 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. */ while ((error= table->file->ha_write_row(table->record[0]))) { if (error == HA_ERR_LOCK_DEADLOCK || error == HA_ERR_LOCK_WAIT_TIMEOUT || (keynum= table->file->get_dup_key(error)) < 0 || !overwrite) { DBUG_PRINT("info",("get_dup_key returns %d)", keynum)); /* 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 - either because the error was not "duplicate key" error - or because the information which key is not available */ table->file->print_error(error, MYF(0)); DBUG_RETURN(error); } /* 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. */ if (table->file->ha_table_flags() & HA_DUPLICATE_POS) { DBUG_PRINT("info",("Locating offending record using rnd_pos()")); error= table->file->rnd_pos(table->record[1], table->file->dup_ref); if (error) { DBUG_PRINT("info",("rnd_pos() returns error %d",error)); table->file->print_error(error, MYF(0)); DBUG_RETURN(error); } } else { DBUG_PRINT("info",("Locating offending record using index_read_idx()")); if (table->file->extra(HA_EXTRA_FLUSH_CACHE)) { DBUG_PRINT("info",("Error when setting HA_EXTRA_FLUSH_CACHE")); DBUG_RETURN(my_errno); } if (key.get() == NULL) { key.assign(static_cast<char*>(my_alloca(table->s->max_unique_length))); if (key.get() == NULL) { DBUG_PRINT("info",("Can't allocate key buffer")); DBUG_RETURN(ENOMEM); } } key_copy((uchar*)key.get(), table->record[0], table->key_info + keynum, 0); error= table->file->index_read_idx_map(table->record[1], keynum, (const uchar*)key.get(), HA_WHOLE_KEY, HA_READ_KEY_EXACT); if (error) { DBUG_PRINT("info",("index_read_idx() returns error %d",error)); table->file->print_error(error, MYF(0)); DBUG_RETURN(error); } } /* Now, record[1] should contain the offending row. That will enable us to update it or, alternatively, delete it (so that we can insert the new row afterwards). */ /* If row is incomplete we will use the record found to fill missing columns. */ 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 /* 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()) { DBUG_PRINT("info",("Updating row using ha_update_row()")); error=table->file->ha_update_row(table->record[1], table->record[0]); switch (error) { case HA_ERR_RECORD_IS_THE_SAME: DBUG_PRINT("info",("ignoring HA_ERR_RECORD_IS_THE_SAME error from" " ha_update_row()")); error= 0; case 0: break; default: DBUG_PRINT("info",("ha_update_row() returns error %d",error)); table->file->print_error(error, MYF(0)); } DBUG_RETURN(error); } else { DBUG_PRINT("info",("Deleting offending row and trying to write new one again")); if ((error= table->file->ha_delete_row(table->record[1]))) { DBUG_PRINT("info",("ha_delete_row() returns error %d",error)); table->file->print_error(error, MYF(0)); DBUG_RETURN(error); } /* Will retry ha_write_row() with the offending row removed. */ } } DBUG_RETURN(error); } #endif int Write_rows_log_event::do_exec_row(const Relay_log_info *const rli) { DBUG_ASSERT(m_table != NULL); int error= write_row(rli, /* if 1 then overwrite */ bit_is_set(slave_exec_mode, SLAVE_EXEC_MODE_IDEMPOTENT) == 1); if (error && !thd->is_error()) { DBUG_ASSERT(0); my_error(ER_UNKNOWN_ERROR, MYF(0)); } return error; } #endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */ #ifdef MYSQL_CLIENT void Write_rows_log_event::print(FILE *file, PRINT_EVENT_INFO* print_event_info) { Rows_log_event::print_helper(file, print_event_info, "Write_rows"); } #endif /************************************************************************** Delete_rows_log_event member functions **************************************************************************/ #if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) /* Compares table->record[0] and table->record[1] Returns TRUE if different. */ static bool record_compare(TABLE *table) { /* 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. */ DBUG_DUMP("record[0]", table->record[0], table->s->reclength); DBUG_DUMP("record[1]", table->record[1], table->s->reclength); bool result= FALSE; uchar saved_x[2], saved_filler[2]; 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); } } if (table->s->blob_fields + table->s->varchar_fields == 0) { result= cmp_record(table,record[1]); goto record_compare_exit; } /* Compare null bits */ if (memcmp(table->null_flags, table->null_flags+table->s->rec_buff_length, table->s->null_bytes)) { result= TRUE; // Diff in NULL value goto record_compare_exit; } /* Compare updated fields */ for (Field **ptr=table->field ; *ptr ; ptr++) { if ((*ptr)->cmp_binary_offset(table->s->rec_buff_length)) { result= TRUE; goto record_compare_exit; } } 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]; } } return result; } /** Locate the current row in event's table. 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. 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. 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. @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. @note If the engine allows random access of the records, a combination of @c position() and @c rnd_pos() will be used. */ int Rows_log_event::find_row(const Relay_log_info *rli) { DBUG_ENTER("Rows_log_event::find_row"); DBUG_ASSERT(m_table && m_table->in_use != NULL); TABLE *table= m_table; int error= 0; /* rpl_row_tabledefs.test specifies that if the extra field on the slave does not have a default value and this is okay with Delete or Update events. Todo: fix wl3228 hld that requires defauls for all types of events */ prepare_record(table, m_width, FALSE); error= unpack_current_row(rli); #ifndef DBUG_OFF DBUG_PRINT("info",("looking for the following record")); DBUG_DUMP("record[0]", table->record[0], table->s->reclength); #endif if ((table->file->ha_table_flags() & HA_PRIMARY_KEY_REQUIRED_FOR_POSITION) && table->s->primary_key < MAX_KEY) { /* 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 the "cursor" (i.e., record[0] in this case) at the correct row. 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); */ DBUG_PRINT("info",("locating record using primary key (position)")); int error= table->file->rnd_pos_by_record(table->record[0]); if (error) { DBUG_PRINT("info",("rnd_pos returns error %d",error)); table->file->print_error(error, MYF(0)); } DBUG_RETURN(error); } // We can't use position() - try other methods. /* We need to retrieve all fields TODO: Move this out from this function to main loop */ table->use_all_columns(); /* 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]); if (table->s->keys > 0) { DBUG_PRINT("info",("locating record using primary key (index_read)")); /* We have a key: search the table using the index */ if (!table->file->inited && (error= table->file->ha_index_init(0, FALSE))) { DBUG_PRINT("info",("ha_index_init returns error %d",error)); table->file->print_error(error, MYF(0)); goto err; } /* 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. */ #ifndef HAVE_purify DBUG_DUMP("key data", m_key, table->key_info->key_length); #endif /* 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. */ if (table->s->null_bytes > 0) table->record[0][table->s->null_bytes - 1]|= 256U - (1U << table->s->last_null_bit_pos); if ((error= table->file->index_read_map(table->record[0], m_key, HA_WHOLE_KEY, HA_READ_KEY_EXACT))) { DBUG_PRINT("info",("no record matching the key found in the table")); table->file->print_error(error, MYF(0)); table->file->ha_index_end(); goto err; } /* Don't print debug messages when running valgrind since they can trigger false warnings. */ #ifndef HAVE_purify DBUG_PRINT("info",("found first matching record")); DBUG_DUMP("record[0]", table->record[0], table->s->reclength); #endif /* 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. */ if (table->key_info->flags & HA_NOSAME) { table->file->ha_index_end(); goto ok; } /* In case key is not unique, we still have to iterate over records found 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]. */ DBUG_PRINT("info",("non-unique index, scanning it to find matching record")); while (record_compare(table)) { /* 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. TODO[record format ndb]: Remove this code once NDB returns the correct record format. */ if (table->s->null_bytes > 0) { table->record[0][table->s->null_bytes - 1]|= 256U - (1U << table->s->last_null_bit_pos); } if ((error= table->file->index_next(table->record[0]))) { DBUG_PRINT("info",("no record matching the given row found")); table->file->print_error(error, MYF(0)); table->file->ha_index_end(); goto err; } } /* Have to restart the scan to be able to fetch the next row. */ table->file->ha_index_end(); } else { DBUG_PRINT("info",("locating record using table scan (rnd_next)")); int restart_count= 0; // Number of times scanning has restarted from top /* We don't have a key: search the table using rnd_next() */ if ((error= table->file->ha_rnd_init(1))) { DBUG_PRINT("info",("error initializing table scan" " (ha_rnd_init returns %d)",error)); table->file->print_error(error, MYF(0)); goto err; } /* Continue until we find the right record or have made a full loop */ do { error= table->file->rnd_next(table->record[0]); switch (error) { case 0: case HA_ERR_RECORD_DELETED: break; case HA_ERR_END_OF_FILE: if (++restart_count < 2) table->file->ha_rnd_init(1); break; default: DBUG_PRINT("info", ("Failed to get next record" " (rnd_next returns %d)",error)); table->file->print_error(error, MYF(0)); table->file->ha_rnd_end(); goto err; } } while (restart_count < 2 && record_compare(table)); /* 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 */ /* Have to restart the scan to be able to fetch the next row. */ if (restart_count == 2) DBUG_PRINT("info", ("Record not found")); else DBUG_DUMP("record found", table->record[0], table->s->reclength); table->file->ha_rnd_end(); DBUG_ASSERT(error == HA_ERR_END_OF_FILE || error == HA_ERR_RECORD_DELETED || error == 0); goto err; } ok: table->default_column_bitmaps(); DBUG_RETURN(0); err: table->default_column_bitmaps(); DBUG_RETURN(error); } #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) 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) { /* We don't need to allocate any memory for m_key since it is not used. */ return 0; } if (m_table->s->keys > 0) { // 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; } return 0; } int Delete_rows_log_event::do_after_row_operations(const Slave_reporting_capability *const, int error) { /*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)); m_key= NULL; return error; } int Delete_rows_log_event::do_exec_row(const Relay_log_info *const rli) { int error; DBUG_ASSERT(m_table != NULL); if (!(error= find_row(rli))) { /* Delete the record found, located in record[0] */ error= m_table->file->ha_delete_row(m_table->record[0]); } 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) { Rows_log_event::print_helper(file, print_event_info, "Delete_rows"); } #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, 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, bool is_transactional) : Rows_log_event(thd_arg, tbl_arg, tid, cols, is_transactional) { init(cols); } void Update_rows_log_event::init(MY_BITMAP const *cols) { /* if bitmap_init fails, caught in is_valid() */ if (likely(!bitmap_init(&m_cols_ai, m_width <= sizeof(m_bitbuf_ai)*8 ? m_bitbuf_ai : NULL, m_width, false))) { /* Cols can be zero if this is a dummy binrows event */ if (likely(cols != NULL)) { memcpy(m_cols_ai.bitmap, cols->bitmap, no_bytes_in_map(cols)); create_last_word_mask(&m_cols_ai); } } } #endif /* !defined(MYSQL_CLIENT) */ 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(). } /* 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) int Update_rows_log_event::do_before_row_operations(const Slave_reporting_capability *const) { if (m_table->s->keys > 0) { // 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; } m_table->timestamp_field_type= TIMESTAMP_NO_AUTO_SET; return 0; } int Update_rows_log_event::do_after_row_operations(const Slave_reporting_capability *const, int error) { /*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 m_key= NULL; return error; } int Update_rows_log_event::do_exec_row(const Relay_log_info *const rli) { DBUG_ASSERT(m_table != NULL); int error= find_row(rli); if (error) { /* 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); return error; } /* This is the situation after locating BI: ===|=== before image ====|=== after image ===|=== ^ ^ m_curr_row m_curr_row_end BI found in the table is stored in record[0]. We copy it to record[1] and unpack AI to record[0]. */ store_record(m_table,record[1]); m_curr_row= m_curr_row_end; error= unpack_current_row(rli); // this also updates m_curr_row_end /* Now we have the right row to update. The old row (the one we're looking for) is in record[1] and the new row is in record[0]. */ #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]); if (error == HA_ERR_RECORD_IS_THE_SAME) error= 0; return error; } #endif /* !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION) */ #ifdef MYSQL_CLIENT void Update_rows_log_event::print(FILE *file, PRINT_EVENT_INFO* print_event_info) { Rows_log_event::print_helper(file, print_event_info, "Update_rows"); } #endif 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; uint8 len= 0; // Assignment to keep compiler happy const char *str= NULL; // Assignment to keep compiler happy 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); DBUG_ASSERT((size_t) m_incident <= sizeof(description)/sizeof(*description)); return description[m_incident]; } #ifndef MYSQL_CLIENT void Incident_log_event::pack_info(Protocol *protocol) { char buf[256]; size_t bytes; 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 Incident_log_event::do_apply_event(Relay_log_info const *rli) { DBUG_ENTER("Incident_log_event::do_apply_event"); rli->report(ERROR_LEVEL, ER_SLAVE_INCIDENT, ER(ER_SLAVE_INCIDENT), description(), m_message.length > 0 ? m_message.str : "<none>"); 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)); uchar buf[sizeof(int16)]; 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)); } #ifdef MYSQL_CLIENT /** The default values for these variables should be values that are *incorrect*, i.e., values that cannot occur in an event. This way, they will always be printed for the first event. */ st_print_event_info::st_print_event_info() :flags2_inited(0), sql_mode_inited(0), auto_increment_increment(0),auto_increment_offset(0), charset_inited(0), lc_time_names_number(~0), charset_database_number(ILLEGAL_CHARSET_INFO_NUMBER), thread_id(0), thread_id_printed(false), base64_output_mode(BASE64_OUTPUT_UNSPEC), printed_fd_event(FALSE) { /* Currently we only use static PRINT_EVENT_INFO objects, so zeroed at program's startup, but these explicit bzero() is for the day someone creates dynamic instances. */ bzero(db, sizeof(db)); bzero(charset, sizeof(charset)); bzero(time_zone_str, sizeof(time_zone_str)); delimiter[0]= ';'; delimiter[1]= 0; myf const flags = MYF(MY_WME | MY_NABP); open_cached_file(&head_cache, NULL, NULL, 0, flags); open_cached_file(&body_cache, NULL, NULL, 0, flags); } #endif