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WL#342 heartbeat

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backporting from 6.0 code base to 5.1.
This commit is contained in:
Andrei Elkin
2009-09-29 14:16:23 +03:00
parent 14cf09c12a
commit c03549bf05
57 changed files with 1809 additions and 1209 deletions
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39
sql/rpl_mi.cc
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@ -26,12 +26,13 @@
int init_intvar_from_file(int* var, IO_CACHE* f, int default_val);
int init_strvar_from_file(char *var, int max_size, IO_CACHE *f,
const char *default_val);
int init_floatvar_from_file(float* var, IO_CACHE* f, float default_val);
Master_info::Master_info()
:Slave_reporting_capability("I/O"),
ssl(0), ssl_verify_server_cert(0), fd(-1), io_thd(0), inited(0),
abort_slave(0),slave_running(0),
slave_run_id(0)
abort_slave(0),slave_running(0), slave_run_id(0),
heartbeat_period(0), received_heartbeats(0)
{
host[0] = 0; user[0] = 0; password[0] = 0;
ssl_ca[0]= 0; ssl_capath[0]= 0; ssl_cert[0]= 0;
@ -84,6 +85,17 @@ void init_master_info_with_options(Master_info* mi)
strmake(mi->ssl_key, master_ssl_key, sizeof(mi->ssl_key)-1);
/* Intentionally init ssl_verify_server_cert to 0, no option available */
mi->ssl_verify_server_cert= 0;
/*
always request heartbeat unless master_heartbeat_period is set
explicitly zero. Here is the default value for heartbeat period
if CHANGE MASTER did not specify it. (no data loss in conversion
as hb period has a max)
*/
mi->heartbeat_period= (float) min(SLAVE_MAX_HEARTBEAT_PERIOD,
(slave_net_timeout/2.0));
DBUG_ASSERT(mi->heartbeat_period > (float) 0.001
|| mi->heartbeat_period == 0);
DBUG_VOID_RETURN;
}
@ -94,8 +106,11 @@ enum {
/* 5.1.16 added value of master_ssl_verify_server_cert */
LINE_FOR_MASTER_SSL_VERIFY_SERVER_CERT= 15,
/* 6.0 added value of master_heartbeat_period */
LINE_FOR_MASTER_HEARTBEAT_PERIOD= 16,
/* Number of lines currently used when saving master info file */
LINES_IN_MASTER_INFO= LINE_FOR_MASTER_SSL_VERIFY_SERVER_CERT
LINES_IN_MASTER_INFO= LINE_FOR_MASTER_HEARTBEAT_PERIOD
};
int init_master_info(Master_info* mi, const char* master_info_fname,
@ -197,6 +212,7 @@ file '%s')", fname);
mi->fd = fd;
int port, connect_retry, master_log_pos, lines;
int ssl= 0, ssl_verify_server_cert= 0;
float master_heartbeat_period= 0.0;
char *first_non_digit;
/*
@ -281,7 +297,13 @@ file '%s')", fname);
if (lines >= LINE_FOR_MASTER_SSL_VERIFY_SERVER_CERT &&
init_intvar_from_file(&ssl_verify_server_cert, &mi->file, 0))
goto errwithmsg;
/*
Starting from 6.0 master_heartbeat_period might be
in the file
*/
if (lines >= LINE_FOR_MASTER_HEARTBEAT_PERIOD &&
init_floatvar_from_file(&master_heartbeat_period, &mi->file, 0.0))
goto errwithmsg;
}
#ifndef HAVE_OPENSSL
@ -300,6 +322,7 @@ file '%s')", fname);
mi->connect_retry= (uint) connect_retry;
mi->ssl= (my_bool) ssl;
mi->ssl_verify_server_cert= ssl_verify_server_cert;
mi->heartbeat_period= master_heartbeat_period;
}
DBUG_PRINT("master_info",("log_file_name: %s position: %ld",
mi->master_log_name,
@ -378,16 +401,18 @@ int flush_master_info(Master_info* mi, bool flush_relay_log_cache)
contents of file). But because of number of lines in the first line
of file we don't care about this garbage.
*/
char heartbeat_buf[sizeof(mi->heartbeat_period) * 4]; // buffer to suffice always
my_sprintf(heartbeat_buf, (heartbeat_buf, "%.3f", mi->heartbeat_period));
my_b_seek(file, 0L);
my_b_printf(file,
"%u\n%s\n%s\n%s\n%s\n%s\n%d\n%d\n%d\n%s\n%s\n%s\n%s\n%s\n%d\n",
"%u\n%s\n%s\n%s\n%s\n%s\n%d\n%d\n%d\n%s\n%s\n%s\n%s\n%s\n%d\n%s\n",
LINES_IN_MASTER_INFO,
mi->master_log_name, llstr(mi->master_log_pos, lbuf),
mi->host, mi->user,
mi->password, mi->port, mi->connect_retry,
(int)(mi->ssl), mi->ssl_ca, mi->ssl_capath, mi->ssl_cert,
mi->ssl_cipher, mi->ssl_key, mi->ssl_verify_server_cert);
mi->ssl_cipher, mi->ssl_key, mi->ssl_verify_server_cert,
heartbeat_buf);
DBUG_RETURN(-flush_io_cache(file));
}