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85d6278fed
This change is to get rid of randomly failing tests, especially those that reads random position of the binary log. From looking at the logs it's clear that some failures is because of a read char (with value >= 128) is converted to a big long value. Using uchar everywhere makes this much less likely to happen. Another benefit is that a lot of cast of char to uchar could be removed. Other things: - Removed some extra space before '=' and '+=' in assignments - Fixed indentations and lines > 80 characters - Replace '16' with 'element_size' (from class definition) in Gtid_list_log_event()
115 lines
3.4 KiB
C++
115 lines
3.4 KiB
C++
/* Copyright (c) 2006 MySQL AB, 2009 Sun Microsystems, Inc.
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Use is subject to license terms.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef SEMISYNC_SLAVE_H
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#define SEMISYNC_SLAVE_H
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#include "semisync.h"
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#include "my_global.h"
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#include "sql_priv.h"
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#include "rpl_mi.h"
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#include "mysql.h"
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class Master_info;
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/**
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The extension class for the slave of semi-synchronous replication
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*/
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class Repl_semi_sync_slave
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:public Repl_semi_sync_base {
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public:
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Repl_semi_sync_slave() :m_slave_enabled(false) {}
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~Repl_semi_sync_slave() {}
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void set_trace_level(unsigned long trace_level) {
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m_trace_level = trace_level;
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}
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/* Initialize this class after MySQL parameters are initialized. this
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* function should be called once at bootstrap time.
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*/
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int init_object();
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bool get_slave_enabled() {
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return m_slave_enabled;
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}
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void set_slave_enabled(bool enabled) {
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m_slave_enabled = enabled;
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}
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bool is_delay_master(){
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return m_delay_master;
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}
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void set_delay_master(bool enabled) {
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m_delay_master = enabled;
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}
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void set_kill_conn_timeout(unsigned int timeout) {
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m_kill_conn_timeout = timeout;
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}
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/* A slave reads the semi-sync packet header and separate the metadata
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* from the payload data.
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*
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* Input:
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* header - (IN) packet header pointer
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* total_len - (IN) total packet length: metadata + payload
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* semi_flags - (IN) store flags: SEMI_SYNC_SLAVE_DELAY_SYNC and
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SEMI_SYNC_NEED_ACK
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* payload - (IN) payload: the replication event
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* payload_len - (IN) payload length
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*
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* Return:
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* 0: success; non-zero: error
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*/
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int slave_read_sync_header(const uchar *header, unsigned long total_len,
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int *semi_flags,
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const uchar **payload, unsigned long *payload_len);
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/* A slave replies to the master indicating its replication process. It
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* indicates that the slave has received all events before the specified
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* binlog position.
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*/
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int slave_reply(Master_info* mi);
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int slave_start(Master_info *mi);
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int slave_stop(Master_info *mi);
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int request_transmit(Master_info*);
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void kill_connection(MYSQL *mysql);
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int reset_slave(Master_info *mi);
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private:
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/* True when init_object has been called */
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bool m_init_done;
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bool m_slave_enabled; /* semi-sycn is enabled on the slave */
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bool m_delay_master;
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unsigned int m_kill_conn_timeout;
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};
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/* System and status variables for the slave component */
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extern my_bool rpl_semi_sync_slave_enabled;
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extern my_bool rpl_semi_sync_slave_status;
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extern ulong rpl_semi_sync_slave_trace_level;
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extern Repl_semi_sync_slave repl_semisync_slave;
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extern char rpl_semi_sync_slave_delay_master;
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extern unsigned int rpl_semi_sync_slave_kill_conn_timeout;
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extern unsigned long long rpl_semi_sync_slave_send_ack;
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#endif /* SEMISYNC_SLAVE_H */
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