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210 lines
6.4 KiB
210 lines
6.4 KiB
# ==== Purpose ====
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#
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# Sync all servers in an arbitrary replication topology. This works
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# only if the servers have been configured with rpl_init.inc (and
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# possibly rpl_change_topology.inc).
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#
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#
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# ==== Usage ====
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#
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# [--let $rpl_only_running_threads= 1]
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# [--let $use_gtids= 1]
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# [--let $rpl_debug= 1]
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# [--let $slave_timeout= NUMBER]
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# --source include/rpl_sync.inc
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#
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# Parameters:
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# $rpl_only_running_threads
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# By default, this script assumes that both the IO thread and the
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# SQL thread are running and fails if one of them is stopped. If
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# $rpl_only_running_threads is set, this script first checks
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# which slave threads are running:
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# - If both threads are running, sync both threads with master.
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# - If only IO thread is running, sync IO thread with master.
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# - If only SQL thread is running, sync SQL thread with IO thread.
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# - If no thread is running, don't sync.
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#
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# $use_gtids
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# If set, uses GTIDs instead of filename and offset for positions.
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#
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# $slave_timeout
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# Set the timeout when waiting for threads to sync. See
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# include/wait_for_slave_param.inc
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#
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# $rpl_debug
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# See include/rpl_init.inc
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#
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#
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# ==== Side effects ====
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#
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# Does not change the current connection (note that this is different
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# from mysqltest's built-in sync_slave_with_master command).
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--let $include_filename= rpl_sync.inc
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--source include/begin_include_file.inc
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#
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#@TODO: Ideally, just being in slave connection, we should have a way to sync
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# all the masters in one command, like below
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# --connection slave
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# --source include/rpl_sync.inc
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# For now, we disable rpl_sync.inc when multisource is used.
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#
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if ($rpl_multi_source)
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{
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--die ERROR IN TEST: rpl_sync.inc cannot be used when $rpl_multi_source=1. If you use multi-source, you must manually sync all servers using sync_slave_sql_with_master.inc or equivalent.
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}
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# Compute $rpl_sync_chain if needed. We could have done this in
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# rpl_change_topology.inc, but instead we do it here because that
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# means we only compute $rpl_sync_chain when it is needed.
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if ($rpl_sync_chain_dirty)
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{
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--source include/rpl_generate_sync_chain.inc
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--let $rpl_sync_chain_dirty= 0
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}
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if ($rpl_debug)
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{
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--echo \$rpl_sync_chain = '$rpl_sync_chain' \$rpl_only_running_threads= $rpl_only_running_threads
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}
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if (!$rpl_group_replication)
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{
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if (!$rpl_server_count_length)
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{
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--die \$rpl_server_count_length is not set. Did you call rpl_init.inc?
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}
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}
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--let $_rpl_i= 1
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--let $_rpl_connect= 0
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if(!$rpl_group_replication)
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{
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while ($_rpl_i) {
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# $rpl_sync_chain consists of a sequence of sync chains. Each sync
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# chain has the form:
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#
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# <space><server1_1><server1_2>...<server1_N>
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#
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# So the space character indicates that a new sync chain starts.
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--let $_rpl_server= `SELECT TRIM(SUBSTR('$rpl_sync_chain', 1 + ($_rpl_i - 1) * $rpl_server_count_length, $rpl_server_count_length))`
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if ($_rpl_server)
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{
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if ($rpl_debug)
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{
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--echo [sync server_$_rpl_prev_server -> server_$_rpl_server]
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}
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if ($rpl_only_running_threads)
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{
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--connection server_$_rpl_server
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--let $_rpl_slave_io_running= query_get_value(SHOW SLAVE STATUS, Slave_IO_Running, 1)
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--let $_rpl_slave_sql_running= query_get_value(SHOW SLAVE STATUS, Slave_SQL_Running, 1)
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if ($rpl_debug)
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{
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--echo Sync IO: $_rpl_slave_io_running; Sync SQL: $_rpl_slave_sql_running
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}
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if ($_rpl_slave_io_running != No)
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{
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--connection server_$_rpl_prev_server
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--let $sync_slave_connection= server_$_rpl_server
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if ($_rpl_slave_sql_running != No)
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{
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--source include/sync_slave_sql_with_master.inc
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}
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if ($_rpl_slave_sql_running == No)
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{
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--source include/sync_slave_io_with_master.inc
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}
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}
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if ($_rpl_slave_io_running == No)
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{
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if ($_rpl_slave_sql_running != No)
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{
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--source include/sync_slave_sql_with_io.inc
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}
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}
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}
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if (!$rpl_only_running_threads)
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{
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--connection server_$_rpl_prev_server
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--let $saved_value= $sync_slave_connection
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--let $sync_slave_connection= server_$_rpl_server
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--source include/sync_slave_sql_with_master.inc
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--let $sync_slave_connection= $saved_value
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}
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}
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# This happens at the beginning of a new sync subchain and at the
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# end of the full sync chain.
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if (!$_rpl_server)
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{
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--inc $_rpl_i
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--let $_rpl_server= `SELECT TRIM(SUBSTR('$rpl_sync_chain', 1 + ($_rpl_i - 1) * $rpl_server_count_length, $rpl_server_count_length))`
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if (!$_rpl_server)
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{
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# terminate loop
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--let $_rpl_i= -1
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}
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}
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--let $_rpl_prev_server= $_rpl_server
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--inc $_rpl_i
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}
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}
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if ($rpl_group_replication)
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{
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--let $_rpl_old_con= $CURRENT_CONNECTION
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--let $_rpl_server= $rpl_server_count
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while ($_rpl_server)
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{
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--let $rpl_connection_name= server_$_rpl_server
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--source include/rpl_connection.inc
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if ($biggest_gtid_executed == '')
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{
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--let $biggest_gtid_executed= `SELECT @@GLOBAL.GTID_EXECUTED`
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--let $biggest_gtid_executed_server= server_$_rpl_server
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}
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--let $gtid_executed= `SELECT @@GLOBAL.GTID_EXECUTED`
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--let $diff_between_gtid= `SELECT GTID_SUBTRACT('$gtid_executed', '$biggest_gtid_executed')`
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if ($diff_between_gtid != '')
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{
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--let $biggest_gtid_executed= $gtid_executed
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--let $biggest_gtid_executed_server= server_$_rpl_server
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}
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--dec $_rpl_server
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}
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--let $_rpl_server= $rpl_server_count
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while ($_rpl_server)
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{
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--let $rpl_connection_name=server_$_rpl_server
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--source include/rpl_connection.inc
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--let $_member_id= query_get_value(SELECT @@SERVER_UUID, @@SERVER_UUID, 1)
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--let $_member_state= `SELECT member_state FROM performance_schema.replication_group_members group_members WHERE group_members.channel_name="group_replication_applier" AND group_members.member_id="$_member_id"`
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if ($_member_state == "ONLINE")
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{
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--let $rpl_connection_name= $biggest_gtid_executed_server
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--source include/rpl_connection.inc
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--let $sync_slave_connection= server_$_rpl_server
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if ($sync_slave_connection != $biggest_gtid_executed_server)
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{
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--source include/sync_slave_sql_with_master.inc
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}
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}
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--dec $_rpl_server
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}
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--connection $_rpl_old_con
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}
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--let $include_filename= rpl_sync.inc
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--source include/end_include_file.inc
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