Binlog_relay_IO_observer Struct Reference

#include <replication.h>

Public Attributes
uint32	len
int(*	thread_start )(Binlog_relay_IO_param *param)
int(*	thread_stop )(Binlog_relay_IO_param *param)
int(*	before_request_transmit )(Binlog_relay_IO_param *param, uint32 flags)
int(*	after_read_event )(Binlog_relay_IO_param *param, const char *packet, unsigned long len, const char **event_buf, unsigned long *event_len)
int(*	after_queue_event )(Binlog_relay_IO_param *param, const char *event_buf, unsigned long event_len, uint32 flags)
int(*	after_reset_slave )(Binlog_relay_IO_param *param)

Detailed Description

Observes and extends the service of slave IO thread.

Definition at line 276 of file replication.h.

Member Data Documentation

int(* Binlog_relay_IO_observer::after_queue_event)(Binlog_relay_IO_param *param, const char *event_buf, unsigned long event_len, uint32 flags)

This callback is called after written an event packet to relay log

Parameters

param	Observer common parameter
event_buf	Event packet written to relay log
event_len	Length of the event packet written to relay log
flags	flags for relay log

Return values

0	Sucess
1	Failure

Definition at line 340 of file replication.h.

int(* Binlog_relay_IO_observer::after_read_event)(Binlog_relay_IO_param *param, const char *packet, unsigned long len, const char **event_buf, unsigned long *event_len)

This callback is called after read an event packet from master

Parameters

param	Observer common parameter
packet	The event packet read from master
len	Length of the event packet read from master
event_buf	The event packet return after process
event_len	The length of event packet return after process

Return values

0	Sucess
1	Failure

Definition at line 325 of file replication.h.

int(* Binlog_relay_IO_observer::after_reset_slave)(Binlog_relay_IO_param *param)

This callback is called after reset slave relay log IO status

Parameters

param

Observer common parameter

Return values

0	Sucess
1	Failure

Definition at line 352 of file replication.h.

int(* Binlog_relay_IO_observer::before_request_transmit)(Binlog_relay_IO_param *param, uint32 flags)

This callback is called before slave requesting binlog transmission from master

This is called before slave issuing BINLOG_DUMP command to master to request binlog.

Parameters

param	Observer common parameter
flags	binlog dump flags

Return values

0	Sucess
1	Failure

Definition at line 311 of file replication.h.

int(* Binlog_relay_IO_observer::thread_start)(Binlog_relay_IO_param *param)

This callback is called when slave IO thread starts

Parameters

param

Observer common parameter

Return values

0	Sucess
1	Failure

Definition at line 287 of file replication.h.

int(* Binlog_relay_IO_observer::thread_stop)(Binlog_relay_IO_param *param)

This callback is called when slave IO thread stops

Parameters

param

Observer common parameter

Return values

0	Sucess
1	Failure

Definition at line 297 of file replication.h.

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The documentation for this struct was generated from the following file:

• sql/replication.h