diff options
Diffstat (limited to 'mysql-test/include/rpl_sync.inc')
| -rw-r--r-- | mysql-test/include/rpl_sync.inc | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/mysql-test/include/rpl_sync.inc b/mysql-test/include/rpl_sync.inc new file mode 100644 index 00000000..83d4a2e4 --- /dev/null +++ b/mysql-test/include/rpl_sync.inc @@ -0,0 +1,161 @@ +# ==== Purpose ==== +# +# Sync all servers in an arbitrary replication topology. This works +# only if the servers have been configured with rpl_init.inc (and +# possibly rpl_change_topology.inc). +# +# +# ==== Usage ==== +# +# [--let $rpl_only_running_threads= 1] +# [--let $rpl_debug= 1] +# [--let $slave_timeout= NUMBER] +# --source include/rpl_sync.inc +# +# Parameters: +# $rpl_only_running_threads +# By default, this script assumes that both the IO thread and the +# SQL thread are running and fails if one of them is stopped. If +# $rpl_only_running_threads is set, this script first checks +# which slave threads are running: +# - If both threads are running, sync both threads with master. +# - If only IO thread is running, sync IO thread with master. +# - If only SQL thread is running, sync SQL thread with IO thread. +# - If no thread is running, don't sync. +# +# $slave_timeout +# Set the timeout when waiting for threads to sync. See +# include/wait_for_slave_param.inc +# +# $rpl_debug +# See include/rpl_init.inc +# +# +# ==== Side effects ==== +# +# Does not change the current connection (note that this is different +# from mysqltest's built-in sync_slave_with_master command). + + +--let $include_filename= rpl_sync.inc +--source include/begin_include_file.inc + + +# Compute $rpl_sync_chain if needed. We could have done this in +# rpl_change_topology.inc, but instead we do it here because that +# means we only compute $rpl_sync_chain when it is needed. +if ($rpl_sync_chain_dirty) +{ + --source include/rpl_generate_sync_chain.inc + --let $rpl_sync_chain_dirty= 0 +} + + +if ($rpl_debug) +{ + --echo \$rpl_sync_chain = '$rpl_sync_chain' \$rpl_only_running_threads= $rpl_only_running_threads +} + +if (!$rpl_server_count_length) +{ + --die \$rpl_server_count_length is not set. Did you call rpl_init.inc? +} + + +--let $_rpl_i= 1 +--let $_rpl_connect= 0 +while ($_rpl_i) { + # $rpl_sync_chain consists of a sequence of sync chains. Each sync + # chain has the form: + # + # <space><server1_1><server1_2>...<server1_N> + # + # So the space character indicates that a new sync chain starts. + --let $_rpl_server= `SELECT TRIM(SUBSTR('$rpl_sync_chain', 1 + ($_rpl_i - 1) * $rpl_server_count_length, $rpl_server_count_length))` + + if ($_rpl_server) + { + if ($rpl_debug) + { + --echo [sync server_$_rpl_prev_server -> server_$_rpl_server] + } + if ($rpl_only_running_threads) + { + disable_connect_log; + --connection server_$_rpl_server + enable_connect_log; + --let $_rpl_slave_io_running= query_get_value(SHOW SLAVE STATUS, Slave_IO_Running, 1) + --let $_rpl_slave_sql_running= query_get_value(SHOW SLAVE STATUS, Slave_SQL_Running, 1) + if ($rpl_debug) + { + --echo Sync IO: $_rpl_slave_io_running; Sync SQL: $_rpl_slave_sql_running + } + --let $_rpl_slave_io_running= `SELECT IF('$_rpl_slave_io_running' != 'No', 1, '')` + --let $_rpl_slave_sql_running= `SELECT IF('$_rpl_slave_sql_running' = 'Yes', 1, '')` + if ($_rpl_slave_io_running) + { + disable_query_log; + --connection server_$_rpl_prev_server + enable_query_log; + if ($_rpl_slave_sql_running) + { + if ($rpl_debug) + { + --let $_rpl_master_file= query_get_value("SHOW MASTER STATUS", File, 1) + --let $_rpl_master_pos= query_get_value("SHOW MASTER STATUS", Position, 1) + --echo syncing master_file='$_rpl_master_file' master_pos='$_rpl_master_pos' + } + disable_connect_log; + --sync_slave_with_master server_$_rpl_server + enable_connect_log; + } + if (!$_rpl_slave_sql_running) + { + --let $sync_slave_connection= server_$_rpl_server + --source include/sync_slave_io_with_master.inc + } + } + if (!$_rpl_slave_io_running) + { + if ($_rpl_slave_sql_running) + { + --source include/sync_slave_sql_with_io.inc + } + } + } + if (!$rpl_only_running_threads) + { + disable_connect_log; + --connection server_$_rpl_prev_server + if ($rpl_debug) + { + --let $_rpl_master_file= query_get_value("SHOW MASTER STATUS", File, 1) + --let $_rpl_master_pos= query_get_value("SHOW MASTER STATUS", Position, 1) + --echo syncing master_file='$_rpl_master_file' master_pos='$_rpl_master_pos' + } + --sync_slave_with_master server_$_rpl_server + enable_connect_log; + } + } + + # This happens at the beginning of a new sync subchain and at the + # end of the full sync chain. + if (!$_rpl_server) + { + --inc $_rpl_i + --let $_rpl_server= `SELECT TRIM(SUBSTR('$rpl_sync_chain', 1 + ($_rpl_i - 1) * $rpl_server_count_length, $rpl_server_count_length))` + + if (!$_rpl_server) + { + # terminate loop + --let $_rpl_i= -1 + } + } + + --let $_rpl_prev_server= $_rpl_server + --inc $_rpl_i +} + + +--let $include_filename= rpl_sync.inc +--source include/end_include_file.inc |