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Commit 46de2a9f authored by sasha@mysql.sashanet.com's avatar sasha@mysql.sashanet.com
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Added event sequence number and flags to binlog 

Documented/cleaned up log event code
Updated tests
parent 7cf284b7
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Showing with 212 additions and 327 deletions
mysql-test/r/rpl000014.result
View file @ 46de2a9f
File Position Binlog_do_db Binlog_ignore_db
master-bin.001 73
master-bin.001 79
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter
127.0.0.1 root 9999 1 master-bin.001 73 Yes 0 0
127.0.0.1 root 9999 1 master-bin.001 79 Yes 0 0
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter
127.0.0.1 root 9999 1 master-bin.001 73 No 0 0
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter
......@@ -9,7 +9,7 @@ Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Rep
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter
127.0.0.1 root 9999 1 master-bin.001 173 Yes 0 0
File Position Binlog_do_db Binlog_ignore_db
master-bin.001 73
master-bin.001 79
n
1
2
......
mysql-test/r/rpl000015.result
View file @ 46de2a9f
File Position Binlog_do_db Binlog_ignore_db
master-bin.001 73
master-bin.001 79
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter
0 0 0 No 0 0
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter
......@@ -7,7 +7,7 @@ Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Rep
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter
127.0.0.1 root 9999 60 4 No 0 0
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter
127.0.0.1 root 9999 60 master-bin.001 73 Yes 0 0
127.0.0.1 root 9999 60 master-bin.001 79 Yes 0 0
n
10
45
......
mysql-test/r/rpl000016.result
View file @ 46de2a9f
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter
127.0.0.1 root 9999 60 master-bin.001 216 Yes 0 0
127.0.0.1 root 9999 60 master-bin.001 234 Yes 0 0
s
Could not break slave
Tried hard
......@@ -10,7 +10,7 @@ master-bin.003
Log_name
master-bin.003
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter
127.0.0.1 root 9999 60 master-bin.003 184 Yes 0 0
127.0.0.1 root 9999 60 master-bin.003 202 Yes 0 0
m
34
65
......@@ -23,8 +23,8 @@ master-bin.004
master-bin.005
master-bin.006
File Position Binlog_do_db Binlog_ignore_db
master-bin.006 131
master-bin.006 720
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter
127.0.0.1 root 9999 60 master-bin.006 131 Yes 0 0
127.0.0.1 root 9999 60 master-bin.006 720 Yes 0 0
count(*)
100
mysql-test/t/rpl000014.test
View file @ 46de2a9f
......@@ -25,7 +25,7 @@ create table foo (n int);
insert into foo values (1),(2),(3);
save_master_pos;
connection slave;
change master to master_log_pos=73;
change master to master_log_pos=79;
sync_with_master;
select * from foo;
connection master;
......
sql/log.cc
View file @ 46de2a9f
......@@ -81,7 +81,7 @@ static int find_uniq_filename(char *name)
MYSQL_LOG::MYSQL_LOG(): last_time(0), query_start(0),index_file(-1),
name(0), log_type(LOG_CLOSED),write_error(0),
inited(0), no_rotate(0)
inited(0), log_seq(1), no_rotate(0)
{
/*
We don't want to intialize LOCK_Log here as the thread system may
......@@ -232,7 +232,20 @@ void MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
goto err;
Start_log_event s;
bool error;
s.set_log_seq(0, this);
s.write(&log_file);
// if we have a master, record current master info in a slave
// event
if (glob_mi.inited)
{
THD* thd = current_thd;
Slave_log_event s(thd, &glob_mi);
s.set_log_seq(thd, this);
if(s.master_host)
s.write(&log_file);
}
flush_io_cache(&log_file);
pthread_mutex_lock(&LOCK_index);
error=(my_write(index_file, (byte*) log_file_name, strlen(log_file_name),
......@@ -531,16 +544,8 @@ void MYSQL_LOG::new_file()
to change base names at some point.
*/
Rotate_log_event r(new_name+dirname_length(new_name));
r.set_log_seq(current_thd, this);
r.write(&log_file);
// if we have a master, record current master info in a slave
// event
if(glob_mi.inited)
{
Slave_log_event s(current_thd, &glob_mi);
if(s.master_host)
s.write(&log_file);
}
VOID(pthread_cond_broadcast(&COND_binlog_update));
}
name=0;
......@@ -548,6 +553,7 @@ void MYSQL_LOG::new_file()
open(old_name, log_type, new_name);
my_free(old_name,MYF(0));
last_time=query_start=0;
log_seq = 1;
write_error=0;
VOID(pthread_mutex_unlock(&LOCK_log));
}
......@@ -641,6 +647,7 @@ bool MYSQL_LOG::write(Slave_log_event* event_info)
if (!inited) // Can't use mutex if not init
return 0;
VOID(pthread_mutex_lock(&LOCK_log));
event_info->set_log_seq(current_thd, this);
error = event_info->write(&log_file);
VOID(pthread_mutex_unlock(&LOCK_log));
return error;
......
sql/log_event.cc
View file @ 46de2a9f
......@@ -53,7 +53,6 @@ int Log_event::write(IO_CACHE* file)
int Log_event::write_header(IO_CACHE* file)
{
// make sure to change this when the header gets bigger
char buf[LOG_EVENT_HEADER_LEN];
char* pos = buf;
int4store(pos, when); // timestamp
......@@ -64,6 +63,10 @@ int Log_event::write_header(IO_CACHE* file)
long tmp=get_data_size() + LOG_EVENT_HEADER_LEN;
int4store(pos, tmp);
pos += 4;
int4store(pos, log_seq);
pos += 4;
int2store(pos, flags);
pos += 2;
return (my_b_write(file, (byte*) buf, (uint) (pos - buf)));
}
......@@ -116,103 +119,51 @@ int Log_event::read_log_event(IO_CACHE* file, String* packet,
Log_event* Log_event::read_log_event(IO_CACHE* file, pthread_mutex_t* log_lock)
{
time_t timestamp;
uint32 server_id;
char buf[LOG_EVENT_HEADER_LEN-4];
char head[LOG_EVENT_HEADER_LEN];
if(log_lock) pthread_mutex_lock(log_lock);
if (my_b_read(file, (byte *) buf, sizeof(buf)))
if (my_b_read(file, (byte *) head, sizeof(head)))
{
if (log_lock) pthread_mutex_unlock(log_lock);
return NULL;
}
timestamp = uint4korr(buf);
server_id = uint4korr(buf + 5);
switch(buf[EVENT_TYPE_OFFSET])
{
case QUERY_EVENT:
{
Query_log_event* q = new Query_log_event(file, timestamp, server_id);
if(log_lock) pthread_mutex_unlock(log_lock);
if (!q->query)
{
delete q;
q=NULL;
}
return q;
}
case LOAD_EVENT:
{
Load_log_event* l = new Load_log_event(file, timestamp, server_id);
if(log_lock) pthread_mutex_unlock(log_lock);
if (!l->table_name)
{
delete l;
l=NULL;
}
return l;
}
case SLAVE_EVENT:
{
Slave_log_event* l = new Slave_log_event(file, timestamp, server_id);
if(log_lock) pthread_mutex_unlock(log_lock);
if (!l->master_host)
{
delete l;
l=NULL;
}
return l;
return 0;
}
uint data_len = uint4korr(head + EVENT_LEN_OFFSET);
char* buf = 0;
const char* error = 0;
Log_event* res = 0;
case ROTATE_EVENT:
if (data_len > max_allowed_packet)
{
Rotate_log_event* r = new Rotate_log_event(file, timestamp, server_id);
if(log_lock) pthread_mutex_unlock(log_lock);
if (!r->new_log_ident)
{
delete r;
r=NULL;
}
return r;
error = "Event too big";
goto err;
}
case INTVAR_EVENT:
if (data_len < LOG_EVENT_HEADER_LEN)
{
Intvar_log_event* e = new Intvar_log_event(file, timestamp, server_id);
if(log_lock) pthread_mutex_unlock(log_lock);
if (e->type == INVALID_INT_EVENT)
{
delete e;
e=NULL;
}
return e;
error = "Event too small";
goto err;
}
case START_EVENT:
{
Start_log_event* e = new Start_log_event(file, timestamp, server_id);
if(log_lock) pthread_mutex_unlock(log_lock);
return e;
}
case STOP_EVENT:
{
Stop_log_event* e = new Stop_log_event(file, timestamp, server_id);
if(log_lock) pthread_mutex_unlock(log_lock);
return e;
}
default:
break;
if (!(buf = my_malloc(data_len, MYF(MY_WME))))
{
error = "Out of memory";
goto err;
}
// default
memcpy(buf, head, LOG_EVENT_HEADER_LEN);
if(my_b_read(file, (byte*) buf + LOG_EVENT_HEADER_LEN,
data_len - LOG_EVENT_HEADER_LEN))
{
error = "read error";
goto err;
}
res = read_log_event(buf, data_len);
err:
if (log_lock) pthread_mutex_unlock(log_lock);
return NULL;
if(error)
sql_print_error(error);
my_free(buf, MYF(MY_ALLOW_ZERO_PTR));
return res;
}
Log_event* Log_event::read_log_event(const char* buf, int event_len)
......@@ -234,18 +185,6 @@ Log_event* Log_event::read_log_event(const char* buf, int event_len)
return q;
}
case SLAVE_EVENT:
{
Slave_log_event* s = new Slave_log_event(buf, event_len);
if (!s->master_host)
{
delete s;
return NULL;
}
return s;
}
case LOAD_EVENT:
{
......@@ -342,47 +281,21 @@ void Rotate_log_event::print(FILE* file, bool short_form, char* last_db)
fflush(file);
}
Rotate_log_event::Rotate_log_event(IO_CACHE* file, time_t when_arg,
uint32 server_id):
Log_event(when_arg, 0, 0, server_id),new_log_ident(NULL),alloced(0)
{
char *tmp_ident;
char buf[4];
if (my_b_read(file, (byte*) buf, sizeof(buf)))
return;
ulong event_len;
event_len = uint4korr(buf);
if (event_len < ROTATE_EVENT_OVERHEAD)
return;
ident_len = (uchar)(event_len - ROTATE_EVENT_OVERHEAD);
if (!(tmp_ident = (char*) my_malloc((uint)ident_len, MYF(MY_WME))))
return;
if (my_b_read( file, (byte*) tmp_ident, (uint) ident_len))
{
my_free((gptr) tmp_ident, MYF(0));
return;
}
new_log_ident = tmp_ident;
alloced = 1;
}
Start_log_event::Start_log_event(const char* buf) :Log_event(buf)
{
buf += EVENT_LEN_OFFSET + 4; // skip even length
binlog_version = uint2korr(buf);
memcpy(server_version, buf + 2, sizeof(server_version));
created = uint4korr(buf + 2 + sizeof(server_version));
binlog_version = uint2korr(buf + LOG_EVENT_HEADER_LEN +
ST_BINLOG_VER_OFFSET);
memcpy(server_version, buf + ST_SERVER_VER_OFFSET + LOG_EVENT_HEADER_LEN,
ST_SERVER_VER_LEN);
created = uint4korr(buf + ST_CREATED_OFFSET + LOG_EVENT_HEADER_LEN);
}
int Start_log_event::write_data(IO_CACHE* file)
{
char buff[sizeof(server_version)+2+4];
int2store(buff,binlog_version);
memcpy(buff+2,server_version,sizeof(server_version));
int4store(buff+2+sizeof(server_version),created);
char buff[START_HEADER_LEN];
int2store(buff + ST_BINLOG_VER_OFFSET,binlog_version);
memcpy(buff + ST_SERVER_VER_OFFSET,server_version,ST_SERVER_VER_LEN);
int4store(buff + ST_CREATED_OFFSET,created);
return (my_b_write(file, (byte*) buff, sizeof(buff)) ? -1 : 0);
}
......@@ -407,60 +320,25 @@ int Rotate_log_event::write_data(IO_CACHE* file)
return my_b_write(file, (byte*) new_log_ident, (uint) ident_len) ? -1 :0;
}
Query_log_event::Query_log_event(IO_CACHE* file, time_t when_arg,
uint32 server_id):
Log_event(when_arg,0,0,server_id),data_buf(0),query(NULL),db(NULL)
{
char buf[QUERY_HEADER_LEN + 4];
ulong data_len;
if (my_b_read(file, (byte*) buf, sizeof(buf)))
return; // query == NULL will tell the
// caller there was a problem
data_len = uint4korr(buf);
if (data_len < QUERY_EVENT_OVERHEAD)
return; // tear-drop attack protection :)
data_len -= QUERY_EVENT_OVERHEAD;
exec_time = uint4korr(buf + 8);
db_len = (uint)buf[12];
error_code = uint2korr(buf + 13);
/* Allocate one byte extra for end \0 */
if (!(data_buf = (char*) my_malloc(data_len+1, MYF(MY_WME))))
return;
if (my_b_read( file, (byte*) data_buf, data_len))
{
my_free((gptr) data_buf, MYF(0));
data_buf = 0;
return;
}
thread_id = uint4korr(buf + 4);
db = data_buf;
query=data_buf + db_len + 1;
q_len = data_len - 1 - db_len;
*((char*) query + q_len) = 0; // Safety
}
Query_log_event::Query_log_event(const char* buf, int event_len):
Log_event(buf),data_buf(0), query(NULL), db(NULL)
{
if ((uint)event_len < QUERY_EVENT_OVERHEAD)
return;
ulong data_len;
buf += EVENT_LEN_OFFSET;
data_len = event_len - QUERY_EVENT_OVERHEAD;
exec_time = uint4korr(buf + 8);
error_code = uint2korr(buf + 13);
exec_time = uint4korr(buf + LOG_EVENT_HEADER_LEN + Q_EXEC_TIME_OFFSET);
error_code = uint2korr(buf + LOG_EVENT_HEADER_LEN + Q_ERR_CODE_OFFSET);
if (!(data_buf = (char*) my_malloc(data_len + 1, MYF(MY_WME))))
return;
memcpy(data_buf, buf + QUERY_HEADER_LEN + 4, data_len);
thread_id = uint4korr(buf + 4);
memcpy(data_buf, buf + LOG_EVENT_HEADER_LEN + Q_DATA_OFFSET, data_len);
thread_id = uint4korr(buf + LOG_EVENT_HEADER_LEN + Q_THREAD_ID_OFFSET);
db = data_buf;
db_len = (uint)buf[12];
db_len = (uint)buf[LOG_EVENT_HEADER_LEN + Q_DB_LEN_OFFSET];
query=data_buf + db_len + 1;
q_len = data_len - 1 - db_len;
*((char*)query+q_len) = 0;
......@@ -499,44 +377,28 @@ int Query_log_event::write_data(IO_CACHE* file)
if (!query) return -1;
char buf[QUERY_HEADER_LEN];
char* pos = buf;
int4store(pos, thread_id);
pos += 4;
int4store(pos, exec_time);
pos += 4;
*pos++ = (char)db_len;
int2store(pos, error_code);
pos += 2;
int4store(buf + Q_THREAD_ID_OFFSET, thread_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);
return (my_b_write(file, (byte*) buf, (uint)(pos - buf)) ||
return (my_b_write(file, (byte*) buf, QUERY_HEADER_LEN) ||
my_b_write(file, (db) ? (byte*) db : (byte*)"", db_len + 1) ||
my_b_write(file, (byte*) query, q_len)) ? -1 : 0;
}
Intvar_log_event:: Intvar_log_event(IO_CACHE* file, time_t when_arg,
uint32 server_id)
:Log_event(when_arg,0,0,server_id), type(INVALID_INT_EVENT)
{
char buf[9+4];
if (!my_b_read(file, (byte*) buf, sizeof(buf)))
{
type = buf[4];
val = uint8korr(buf+1+4);
}
}
Intvar_log_event::Intvar_log_event(const char* buf):Log_event(buf)
{
buf += LOG_EVENT_HEADER_LEN;
type = buf[0];
val = uint8korr(buf+1);
type = buf[I_TYPE_OFFSET];
val = uint8korr(buf+I_VAL_OFFSET);
}
int Intvar_log_event::write_data(IO_CACHE* file)
{
char buf[9];
buf[0] = type;
int8store(buf + 1, val);
buf[I_TYPE_OFFSET] = type;
int8store(buf + I_VAL_OFFSET, val);
return my_b_write(file, (byte*) buf, sizeof(buf));
}
......@@ -567,12 +429,12 @@ void Intvar_log_event::print(FILE* file, bool short_form, char* last_db)
int Load_log_event::write_data(IO_CACHE* file)
{
char buf[LOAD_HEADER_LEN];
int4store(buf, thread_id);
int4store(buf + 4, exec_time);
int4store(buf + 8, skip_lines);
buf[12] = (char)table_name_len;
buf[13] = (char)db_len;
int4store(buf + 14, num_fields);
int4store(buf + L_THREAD_ID_OFFSET, thread_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);
if(my_b_write(file, (byte*)buf, sizeof(buf)) ||
my_b_write(file, (byte*)&sql_ex, sizeof(sql_ex)))
......@@ -591,52 +453,33 @@ int Load_log_event::write_data(IO_CACHE* file)
return 0;
}
Load_log_event::Load_log_event(IO_CACHE* file, time_t when, uint32 server_id):
Log_event(when,0,0,server_id),data_buf(0),num_fields(0),
fields(0),field_lens(0),field_block_len(0),
table_name(0),db(0),fname(0)
{
char buf[LOAD_HEADER_LEN + 4];
ulong data_len;
if (my_b_read(file, (byte*)buf, sizeof(buf)) ||
my_b_read(file, (byte*)&sql_ex, sizeof(sql_ex)))
return;
data_len = uint4korr(buf) - LOAD_EVENT_OVERHEAD;
if (!(data_buf = (char*)my_malloc(data_len + 1, MYF(MY_WME))))
return;
if (my_b_read(file, (byte*)data_buf, data_len))
return;
copy_log_event(buf,data_len);
}
Load_log_event::Load_log_event(const char* buf, int event_len):
Log_event(buf),data_buf(0),num_fields(0),fields(0),
field_lens(0),field_block_len(0),
table_name(0),db(0),fname(0)
{
ulong data_len;
uint data_len;
if((uint)event_len < (LOAD_EVENT_OVERHEAD + LOG_EVENT_HEADER_LEN))
return;
buf += EVENT_LEN_OFFSET;
memcpy(&sql_ex, buf + LOAD_HEADER_LEN + 4, sizeof(sql_ex));
data_len = event_len;
memcpy(&sql_ex, buf + LOAD_HEADER_LEN + LOG_EVENT_HEADER_LEN,
sizeof(sql_ex));
data_len = event_len - LOAD_HEADER_LEN - LOG_EVENT_HEADER_LEN -
sizeof(sql_ex);
if(!(data_buf = (char*)my_malloc(data_len + 1, MYF(MY_WME))))
return;
memcpy(data_buf, buf + 22 + sizeof(sql_ex), data_len);
memcpy(data_buf, buf +LOG_EVENT_HEADER_LEN + LOAD_HEADER_LEN
+ sizeof(sql_ex), data_len);
copy_log_event(buf, data_len);
}
void Load_log_event::copy_log_event(const char *buf, ulong data_len)
{
thread_id = uint4korr(buf+4);
exec_time = uint4korr(buf+8);
skip_lines = uint4korr(buf + 12);
table_name_len = (uint)buf[16];
db_len = (uint)buf[17];
num_fields = uint4korr(buf + 18);
thread_id = uint4korr(buf + L_THREAD_ID_OFFSET + LOG_EVENT_HEADER_LEN);
exec_time = uint4korr(buf + L_EXEC_TIME_OFFSET + LOG_EVENT_HEADER_LEN);
skip_lines = uint4korr(buf + L_SKIP_LINES_OFFSET + LOG_EVENT_HEADER_LEN);
table_name_len = (uint)buf[L_TBL_LEN_OFFSET + LOG_EVENT_HEADER_LEN];
db_len = (uint)buf[L_DB_LEN_OFFSET + LOG_EVENT_HEADER_LEN];
num_fields = uint4korr(buf + L_NUM_FIELDS_OFFSET + LOG_EVENT_HEADER_LEN);
if (num_fields > data_len) // simple sanity check against corruption
return;
......@@ -742,6 +585,12 @@ void Load_log_event::print(FILE* file, bool short_form, char* last_db)
#ifndef MYSQL_CLIENT
void Log_event::set_log_seq(THD* thd, MYSQL_LOG* log)
{
log_seq = (thd && thd->log_seq) ? thd->log_seq++ : log->log_seq++;
}
void Load_log_event::set_fields(List<Item> &fields)
{
uint i;
......@@ -804,48 +653,26 @@ void Slave_log_event::print(FILE* file, bool short_form = 0,
int Slave_log_event::get_data_size()
{
return master_host_len + master_log_len + 1 + sizeof(uint32) +
sizeof(ulonglong) +
sizeof(uint16);
return master_host_len + master_log_len + 1 + 4 /* data_size*/ +
8 /* master_pos */ +
2 /* master_port */;
}
int Slave_log_event::write_data(IO_CACHE* file)
{
int data_size = get_data_size();
int4store(mem_pool, data_size);
int8store(mem_pool + 4, master_pos);
int2store(mem_pool + 12, master_port);
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 my_b_write(file, (byte*)mem_pool, data_size);
}
Slave_log_event::Slave_log_event(IO_CACHE* file, time_t when,
uint32 server_id_arg):
Log_event(when,0,0,server_id),master_host(0)
{
char buf[4];
if(my_b_read(file, (byte*)buf, 4))
return;
uint32 data_size;
data_size = uint4korr(buf);
if(data_size > max_allowed_packet)
return; // safety
if(!(mem_pool = (char*)my_malloc(data_size + 1, MYF(MY_WME))))
return;
if(my_b_read(file, (byte*)mem_pool + 4, data_size - 4))
return;
mem_pool[data_size] = 0;
init_from_mem_pool(data_size);
}
void Slave_log_event::init_from_mem_pool(int data_size)
{
master_pos = uint8korr(mem_pool + 4);
master_port = uint2korr(mem_pool + 12);
master_host = mem_pool + 14;
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;
......@@ -872,5 +699,3 @@ Slave_log_event::Slave_log_event(const char* buf, int event_len):
sql/log_event.h
View file @ 46de2a9f
......@@ -34,21 +34,80 @@
#define LOG_READ_TOO_LARGE -7
#define LOG_EVENT_OFFSET 4
#define BINLOG_VERSION 1
#define BINLOG_VERSION 2
/* we could have used SERVER_VERSION_LENGTH, but this introduces an
obscure dependency - if somebody decided to change SERVER_VERSION_LENGTH
this would have broke the replication protocol
*/
#define ST_SERVER_VER_LEN 50
/* Binary log consists of events. Each event has a fixed length header,
followed by possibly variable ( depending on the type of event) length
data body. The data body consists of an optional fixed length segment
(post-header), and an optional variable length segment. See #defines and
comments below for the format specifics
*/
/* event-specific post-header sizes */
#define LOG_EVENT_HEADER_LEN 19
#define QUERY_HEADER_LEN (4 + 4 + 1 + 2)
#define LOAD_HEADER_LEN (4 + 4 + 4 + 1 +1 + 4)
#define START_HEADER_LEN (2 + ST_SERVER_VER_LEN + 4)
/* event header offsets */
#define LOG_EVENT_HEADER_LEN 13
#define QUERY_HEADER_LEN (sizeof(uint32) + sizeof(uint32) + \
sizeof(uchar) + sizeof(uint16))
#define LOAD_HEADER_LEN (sizeof(uint32) + sizeof(uint32) + \
+ sizeof(uint32) + 2 + sizeof(uint32))
#define EVENT_LEN_OFFSET 9
#define EVENT_TYPE_OFFSET 4
#define SERVER_ID_OFFSET 5
#define EVENT_LEN_OFFSET 9
#define LOG_SEQ_OFFSET 13
#define FLAGS_OFFSET 17
/* start event post-header */
#define ST_BINLOG_VER_OFFSET 0
#define ST_SERVER_VER_OFFSET 2
#define ST_CREATED_OFFSET (ST_SERVER_VER_OFFSET + ST_SERVER_VER_LEN)
/* slave event post-header */
#define SL_MASTER_PORT_OFFSET 12
#define SL_MASTER_POS_OFFSET 4
#define SL_MASTER_HOST_OFFSET 14
/* query event post-header */
#define Q_THREAD_ID_OFFSET 0
#define Q_EXEC_TIME_OFFSET 4
#define Q_DB_LEN_OFFSET 8
#define Q_ERR_CODE_OFFSET 9
#define Q_DATA_OFFSET QUERY_HEADER_LEN
/* Intvar event post-header */
#define I_TYPE_OFFSET 0
#define I_VAL_OFFSET 1
/* Load event post-header */
#define L_THREAD_ID_OFFSET 0
#define L_EXEC_TIME_OFFSET 4
#define L_SKIP_LINES_OFFSET 8
#define L_DB_LEN_OFFSET 12
#define L_TBL_LEN_OFFSET 13
#define L_NUM_FIELDS_OFFSET 14
#define L_DATA_OFFSET LOAD_HEADER_LEN
#define QUERY_EVENT_OVERHEAD (LOG_EVENT_HEADER_LEN+QUERY_HEADER_LEN)
#define QUERY_DATA_OFFSET (LOG_EVENT_HEADER_LEN+QUERY_HEADER_LEN)
#define ROTATE_EVENT_OVERHEAD LOG_EVENT_HEADER_LEN
#define LOAD_EVENT_OVERHEAD (LOG_EVENT_HEADER_LEN+LOAD_HEADER_LEN+sizeof(sql_ex_info))
#define BINLOG_MAGIC "\xfe\x62\x69\x6e"
#define LOG_EVENT_TIME_F 0x1
enum Log_event_type { START_EVENT = 1, QUERY_EVENT =2,
STOP_EVENT=3, ROTATE_EVENT = 4, INTVAR_EVENT=5,
LOAD_EVENT=6, SLAVE_EVENT=7};
......@@ -57,6 +116,8 @@ enum Int_event_type { INVALID_INT_EVENT = 0, LAST_INSERT_ID_EVENT = 1, INSERT_ID
#ifndef MYSQL_CLIENT
class String;
class MYSQL_LOG;
class THD;
#endif
extern uint32 server_id;
......@@ -68,8 +129,9 @@ class Log_event
public:
time_t when;
ulong exec_time;
int valid_exec_time; // if false, the exec time setting is bogus
uint32 server_id;
uint32 log_seq;
uint16 flags;
static void *operator new(size_t size)
{
......@@ -86,17 +148,22 @@ class Log_event
virtual int write_data(IO_CACHE* file __attribute__((unused))) { return 0; }
virtual Log_event_type get_type_code() = 0;
Log_event(time_t when_arg, ulong exec_time_arg = 0,
int valid_exec_time_arg = 0, uint32 server_id_arg = 0):
int valid_exec_time = 0, uint32 server_id_arg = 0,
uint32 log_seq_arg = 0, uint16 flags_arg = 0):
when(when_arg), exec_time(exec_time_arg),
valid_exec_time(valid_exec_time_arg)
log_seq(log_seq_arg),flags(0)
{
server_id = server_id_arg ? server_id_arg : (::server_id);
if(valid_exec_time)
flags |= LOG_EVENT_TIME_F;
}
Log_event(const char* buf): valid_exec_time(0)
Log_event(const char* buf)
{
when = uint4korr(buf);
server_id = uint4korr(buf + 5);
server_id = uint4korr(buf + SERVER_ID_OFFSET);
log_seq = uint4korr(buf + LOG_SEQ_OFFSET);
flags = uint2korr(buf + FLAGS_OFFSET);
}
virtual ~Log_event() {}
......@@ -114,6 +181,7 @@ class Log_event
#ifndef MYSQL_CLIENT
static int read_log_event(IO_CACHE* file, String* packet,
pthread_mutex_t* log_lock);
void set_log_seq(THD* thd, MYSQL_LOG* log);
#endif
};
......@@ -136,7 +204,8 @@ class Query_log_event: public Log_event
THD* thd;
bool cache_stmt;
Query_log_event(THD* thd_arg, const char* query_arg, bool using_trans=0):
Log_event(thd_arg->start_time,0,1,thd_arg->server_id), data_buf(0),
Log_event(thd_arg->start_time,0,1,thd_arg->server_id,thd_arg->log_seq),
data_buf(0),
query(query_arg), db(thd_arg->db), q_len(thd_arg->query_length),
error_code(thd_arg->killed ? ER_SERVER_SHUTDOWN: thd_arg->net.last_errno),
thread_id(thd_arg->thread_id), thd(thd_arg),
......@@ -150,7 +219,6 @@ class Query_log_event: public Log_event
}
#endif
Query_log_event(IO_CACHE* file, time_t when, uint32 server_id_arg);
Query_log_event(const char* buf, int event_len);
~Query_log_event()
{
......@@ -192,7 +260,6 @@ class Slave_log_event: public Log_event
#endif
Slave_log_event(const char* buf, int event_len);
Slave_log_event(IO_CACHE* file, time_t when, uint32 server_id_arg);
~Slave_log_event();
int get_data_size();
Log_event_type get_type_code() { return SLAVE_EVENT; }
......@@ -263,7 +330,6 @@ class Load_log_event: public Log_event
time_t end_time;
time(&end_time);
exec_time = (ulong) (end_time - thd->start_time);
valid_exec_time = 1;
db_len = (db) ? (uint32) strlen(db) : 0;
table_name_len = (table_name) ? (uint32) strlen(table_name) : 0;
fname_len = (fname) ? (uint) strlen(fname) : 0;
......@@ -319,7 +385,6 @@ class Load_log_event: public Log_event
void set_fields(List<Item> &fields_arg);
#endif
Load_log_event(IO_CACHE * file, time_t when, uint32 server_id_arg);
Load_log_event(const char* buf, int event_len);
~Load_log_event()
{
......@@ -351,23 +416,12 @@ class Start_log_event: public Log_event
public:
uint32 created;
uint16 binlog_version;
char server_version[50];
char server_version[ST_SERVER_VER_LEN];
Start_log_event() :Log_event(time(NULL)),binlog_version(BINLOG_VERSION)
{
created = (uint32) when;
memcpy(server_version, ::server_version, sizeof(server_version));
}
Start_log_event(IO_CACHE* file, time_t when_arg, uint32 server_id_arg) :
Log_event(when_arg, 0, 0, server_id_arg)
{
char buf[sizeof(server_version) + 2 + 4 + 4];
if (my_b_read(file, (byte*) buf, sizeof(buf)))
return;
binlog_version = uint2korr(buf+4);
memcpy(server_version, buf + 6, sizeof(server_version));
server_version[sizeof(server_version)-1]=0;
created = uint4korr(buf + 6 + sizeof(server_version));
memcpy(server_version, ::server_version, ST_SERVER_VER_LEN);
}
Start_log_event(const char* buf);
......@@ -376,8 +430,7 @@ class Start_log_event: public Log_event
int write_data(IO_CACHE* file);
int get_data_size()
{
// sizeof(binlog_version) + sizeof(server_version) sizeof(created)
return 2 + sizeof(server_version) + 4;
return START_HEADER_LEN;
}
void print(FILE* file, bool short_form = 0, char* last_db = 0);
};
......@@ -390,7 +443,6 @@ class Intvar_log_event: public Log_event
Intvar_log_event(uchar type_arg, ulonglong val_arg)
:Log_event(time(NULL)),val(val_arg),type(type_arg)
{}
Intvar_log_event(IO_CACHE* file, time_t when, uint32 server_id_arg);
Intvar_log_event(const char* buf);
~Intvar_log_event() {}
Log_event_type get_type_code() { return INTVAR_EVENT;}
......@@ -406,12 +458,6 @@ class Stop_log_event: public Log_event
public:
Stop_log_event() :Log_event(time(NULL))
{}
Stop_log_event(IO_CACHE* file, time_t when_arg, uint32 server_id_arg):
Log_event(when_arg,0,0,server_id_arg)
{
byte skip[4];
my_b_read(file, skip, sizeof(skip)); // skip the event length
}
Stop_log_event(const char* buf):Log_event(buf)
{
}
......@@ -434,7 +480,6 @@ class Rotate_log_event: public Log_event
alloced(0)
{}
Rotate_log_event(IO_CACHE* file, time_t when, uint32 server_id_arg) ;
Rotate_log_event(const char* buf, int event_len);
~Rotate_log_event()
{
......
sql/sql_class.cc
View file @ 46de2a9f
......@@ -96,6 +96,7 @@ THD::THD():user_time(0),fatal_error(0),last_insert_id_used(0),
current_linfo = 0;
slave_thread = 0;
slave_proxy_id = 0;
log_seq = 0;
cond_count=0;
convert_set=0;
mysys_var=0;
......
sql/sql_class.h
View file @ 46de2a9f
......@@ -63,11 +63,15 @@ class MYSQL_LOG {
char time_buff[20],db[NAME_LEN+1];
char log_file_name[FN_REFLEN],index_file_name[FN_REFLEN];
bool write_error,inited;
uint32 log_seq; // current event sequence number
// needed this for binlog
bool no_rotate; // for binlog - if log name can never change
// we should not try to rotate it or write any rotation events
// the user should use FLUSH MASTER instead of FLUSH LOGS for
// purging
friend class Log_event;
public:
MYSQL_LOG();
~MYSQL_LOG();
......@@ -243,6 +247,7 @@ class THD :public ilink {
struct st_my_thread_var *mysys_var;
enum enum_server_command command;
uint32 server_id;
uint32 log_seq;
const char *where;
time_t start_time,time_after_lock,user_time;
time_t connect_time,thr_create_time; // track down slow pthread_create
......
sql/sql_repl.cc
View file @ 46de2a9f
......@@ -74,8 +74,10 @@ static int fake_rotate_event(NET* net, String* packet, char* log_file_name,
uint ident_len = (uint) strlen(p);
ulong event_len = ident_len + sizeof(header);
int4store(header + EVENT_TYPE_OFFSET + 1, server_id);
int4store(header + SERVER_ID_OFFSET, server_id);
int4store(header + EVENT_LEN_OFFSET, event_len);
int2store(header + FLAGS_OFFSET, 0);
int4store(header + LOG_SEQ_OFFSET, 0);
packet->append(header, sizeof(header));
packet->append(p,ident_len);
if(my_net_write(net, (char*)packet->ptr(), packet->length()))
......
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