From 06eaf7232e9a920468c0f8d74dcf2fe8b555501c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 13 Apr 2024 14:24:36 +0200 Subject: Adding upstream version 1:10.11.6. Signed-off-by: Daniel Baumann --- sql/semisync_slave.h | 116 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 sql/semisync_slave.h (limited to 'sql/semisync_slave.h') diff --git a/sql/semisync_slave.h b/sql/semisync_slave.h new file mode 100644 index 00000000..a8229245 --- /dev/null +++ b/sql/semisync_slave.h @@ -0,0 +1,116 @@ +/* Copyright (c) 2006 MySQL AB, 2009 Sun Microsystems, Inc. + Use is subject to license terms. + + 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ + + +#ifndef SEMISYNC_SLAVE_H +#define SEMISYNC_SLAVE_H + +#include "semisync.h" +#include "my_global.h" +#include "sql_priv.h" +#include "rpl_mi.h" +#include "mysql.h" +#include + +class Master_info; + +/** + The extension class for the slave of semi-synchronous replication +*/ +class Repl_semi_sync_slave + :public Repl_semi_sync_base { +public: + Repl_semi_sync_slave() :m_slave_enabled(false) {} + ~Repl_semi_sync_slave() = default; + + void set_trace_level(unsigned long trace_level) { + m_trace_level = trace_level; + } + + /* Initialize this class after MySQL parameters are initialized. this + * function should be called once at bootstrap time. + */ + int init_object(); + + bool get_slave_enabled() { + return m_slave_enabled; + } + + void set_slave_enabled(bool enabled) { + m_slave_enabled = enabled; + } + + bool is_delay_master(){ + return m_delay_master; + } + + void set_delay_master(bool enabled) { + m_delay_master = enabled; + } + + void set_kill_conn_timeout(unsigned int timeout) { + m_kill_conn_timeout = timeout; + } + + /* A slave reads the semi-sync packet header and separate the metadata + * from the payload data. + * + * Input: + * header - (IN) packet header pointer + * total_len - (IN) total packet length: metadata + payload + * semi_flags - (IN) store flags: SEMI_SYNC_SLAVE_DELAY_SYNC and + SEMI_SYNC_NEED_ACK + * payload - (IN) payload: the replication event + * payload_len - (IN) payload length + * + * Return: + * 0: success; non-zero: error + */ + int slave_read_sync_header(const uchar *header, unsigned long total_len, + int *semi_flags, + const uchar **payload, unsigned long *payload_len); + + /* A slave replies to the master indicating its replication process. It + * indicates that the slave has received all events before the specified + * binlog position. + */ + int slave_reply(Master_info* mi); + int slave_start(Master_info *mi); + int slave_stop(Master_info *mi); + int request_transmit(Master_info*); + void kill_connection(MYSQL *mysql); + int reset_slave(Master_info *mi); + +private: + /* True when init_object has been called */ + bool m_init_done; + bool m_slave_enabled; /* semi-sycn is enabled on the slave */ + bool m_delay_master; + unsigned int m_kill_conn_timeout; +}; + + +/* System and status variables for the slave component */ +extern my_bool rpl_semi_sync_slave_enabled; +extern my_bool rpl_semi_sync_slave_status; +extern ulong rpl_semi_sync_slave_trace_level; +extern Repl_semi_sync_slave repl_semisync_slave; + +extern char rpl_semi_sync_slave_delay_master; +extern unsigned int rpl_semi_sync_slave_kill_conn_timeout; +extern unsigned long long rpl_semi_sync_slave_send_ack; + +#endif /* SEMISYNC_SLAVE_H */ -- cgit v1.2.3