mirror of
https://github.com/cytopia/devilbox.git
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308 lines
9.0 KiB
PHP
308 lines
9.0 KiB
PHP
<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* Replication helpers
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*
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* @package PhpMyAdmin
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*/
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if (! defined('PHPMYADMIN')) {
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exit;
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}
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/**
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* get master replication from server
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*/
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$server_master_replication = PMA_DBI_fetch_result('SHOW MASTER STATUS');
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/**
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* get slave replication from server
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*/
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$server_slave_replication = PMA_DBI_fetch_result('SHOW SLAVE STATUS');
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/**
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* replication types
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*/
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$replication_types = array('master', 'slave');
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/**
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* define variables for master status
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*/
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$master_variables = array(
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'File',
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'Position',
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'Binlog_Do_DB',
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'Binlog_Ignore_DB',
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);
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/**
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* Define variables for slave status
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*/
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$slave_variables = array(
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'Slave_IO_State',
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'Master_Host',
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'Master_User',
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'Master_Port',
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'Connect_Retry',
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'Master_Log_File',
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'Read_Master_Log_Pos',
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'Relay_Log_File',
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'Relay_Log_Pos',
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'Relay_Master_Log_File',
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'Slave_IO_Running',
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'Slave_SQL_Running',
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'Replicate_Do_DB',
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'Replicate_Ignore_DB',
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'Replicate_Do_Table',
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'Replicate_Ignore_Table',
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'Replicate_Wild_Do_Table',
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'Replicate_Wild_Ignore_Table',
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'Last_Errno',
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'Last_Error',
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'Skip_Counter',
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'Exec_Master_Log_Pos',
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'Relay_Log_Space',
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'Until_Condition',
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'Until_Log_File',
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'Until_Log_Pos',
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'Master_SSL_Allowed',
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'Master_SSL_CA_File',
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'Master_SSL_CA_Path',
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'Master_SSL_Cert',
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'Master_SSL_Cipher',
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'Master_SSL_Key',
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'Seconds_Behind_Master',
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);
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/**
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* define important variables, which need to be watched for correct running of replication in slave mode
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*
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* @usedby PMA_replication_print_status_table()
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*/
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// TODO change to regexp or something, to allow for negative match.
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// To e.g. highlight 'Last_Error'
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//
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$slave_variables_alerts = array(
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'Slave_IO_Running' => 'No',
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'Slave_SQL_Running' => 'No',
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);
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$slave_variables_oks = array(
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'Slave_IO_Running' => 'Yes',
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'Slave_SQL_Running' => 'Yes',
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);
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// check which replication is available and
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// set $server_{master/slave}_status and assign values
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// replication info is more easily passed to functions
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/*
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* @todo use $replication_info everywhere instead of the generated variable names
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*/
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$replication_info = array();
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foreach ($replication_types as $type) {
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if (count(${"server_{$type}_replication"}) > 0) {
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${"server_{$type}_status"} = true;
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$replication_info[$type]['status'] = true;
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} else {
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${"server_{$type}_status"} = false;
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$replication_info[$type]['status'] = false;
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}
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if (${"server_{$type}_status"}) {
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if ($type == "master") {
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${"server_{$type}_Do_DB"} = explode(",", $server_master_replication[0]["Binlog_Do_DB"]);
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$replication_info[$type]['Do_DB'] = ${"server_{$type}_Do_DB"};
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${"server_{$type}_Ignore_DB"} = explode(",", $server_master_replication[0]["Binlog_Ignore_DB"]);
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$replication_info[$type]['Ignore_DB'] = ${"server_{$type}_Ignore_DB"};
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} elseif ($type == "slave") {
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${"server_{$type}_Do_DB"} = explode(",", $server_slave_replication[0]["Replicate_Do_DB"]);
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$replication_info[$type]['Do_DB'] = ${"server_{$type}_Do_DB"};
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${"server_{$type}_Ignore_DB"} = explode(",", $server_slave_replication[0]["Replicate_Ignore_DB"]);
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$replication_info[$type]['Ignore_DB'] = ${"server_{$type}_Ignore_DB"};
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${"server_{$type}_Do_Table"} = explode(",", $server_slave_replication[0]["Replicate_Do_Table"]);
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$replication_info[$type]['Do_Table'] = ${"server_{$type}_Do_Table"};
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${"server_{$type}_Ignore_Table"} = explode(",", $server_slave_replication[0]["Replicate_Ignore_Table"]);
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$replication_info[$type]['Ignore_Table'] = ${"server_{$type}_Ignore_Table"};
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${"server_{$type}_Wild_Do_Table"} = explode(",", $server_slave_replication[0]["Replicate_Wild_Do_Table"]);
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$replication_info[$type]['Wild_Do_Table'] = ${"server_{$type}_Wild_Do_Table"};
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${"server_{$type}_Wild_Ignore_Table"} = explode(",", $server_slave_replication[0]["Replicate_Wild_Ignore_Table"]);
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$replication_info[$type]['Wild_Ignore_Table'] = ${"server_{$type}_Wild_Ignore_Table"};
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}
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}
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}
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/**
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* Extracts database or table name from string
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*
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* @param string $string contains "dbname.tablename"
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* @param string $what what to extract (db|table)
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*
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* @return $string the extracted part
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*/
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function PMA_extract_db_or_table($string, $what = 'db')
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{
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$list = explode(".", $string);
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if ('db' == $what) {
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return $list[0];
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} else {
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return $list[1];
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}
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}
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/**
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* Configures replication slave
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*
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* @param string $action possible values: START or STOP
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* @param string $control default: null, possible values: SQL_THREAD or IO_THREAD or null.
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* If it is set to null, it controls both SQL_THREAD and IO_THREAD
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* @param mixed $link mysql link
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*
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* @return mixed output of PMA_DBI_try_query
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*/
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function PMA_replication_slave_control($action, $control = null, $link = null)
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{
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$action = strtoupper($action);
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$control = strtoupper($control);
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if ($action != "START" && $action != "STOP") {
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return -1;
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}
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if ($control != "SQL_THREAD" && $control != "IO_THREAD" && $control != null) {
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return -1;
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}
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return PMA_DBI_try_query($action . " SLAVE " . $control . ";", $link);
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}
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/**
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* Changes master for replication slave
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*
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* @param string $user replication user on master
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* @param string $password password for the user
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* @param string $host master's hostname or IP
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* @param int $port port, where mysql is running
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* @param array $pos position of mysql replication,
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* array should contain fields File and Position
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* @param bool $stop shall we stop slave?
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* @param bool $start shall we start slave?
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* @param mixed $link mysql link
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*
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* @return output of CHANGE MASTER mysql command
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*/
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function PMA_replication_slave_change_master($user, $password, $host, $port,
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$pos, $stop = true, $start = true, $link = null
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) {
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if ($stop) {
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PMA_replication_slave_control("STOP", null, $link);
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}
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$out = PMA_DBI_try_query(
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'CHANGE MASTER TO ' .
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'MASTER_HOST=\'' . $host . '\',' .
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'MASTER_PORT=' . ($port * 1) . ',' .
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'MASTER_USER=\'' . $user . '\',' .
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'MASTER_PASSWORD=\'' . $password . '\',' .
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'MASTER_LOG_FILE=\'' . $pos["File"] . '\',' .
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'MASTER_LOG_POS=' . $pos["Position"] . ';', $link
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);
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if ($start) {
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PMA_replication_slave_control("START", null, $link);
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}
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return $out;
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}
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/**
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* This function provides connection to remote mysql server
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*
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* @param string $user mysql username
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* @param string $password password for the user
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* @param string $host mysql server's hostname or IP
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* @param int $port mysql remote port
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* @param string $socket path to unix socket
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*
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* @return mixed $link mysql link on success
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*/
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function PMA_replication_connect_to_master($user, $password, $host = null, $port = null, $socket = null)
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{
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$server = array();
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$server["host"] = PMA_sanitizeMySQLHost($host);
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$server["port"] = $port;
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$server["socket"] = $socket;
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// 5th parameter set to true means that it's an auxiliary connection
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// and we must not go back to login page if it fails
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return PMA_DBI_connect($user, $password, false, $server, true);
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}
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/**
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* Fetches position and file of current binary log on master
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*
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* @param mixed $link mysql link
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*
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* @return array an array containing File and Position in MySQL replication
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* on master server, useful for PMA_replication_slave_change_master
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*/
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function PMA_replication_slave_bin_log_master($link = null)
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{
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$data = PMA_DBI_fetch_result('SHOW MASTER STATUS', null, null, $link);
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$output = array();
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if (! empty($data)) {
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$output["File"] = $data[0]["File"];
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$output["Position"] = $data[0]["Position"];
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}
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return $output;
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}
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/**
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* Get list of replicated databases on master server
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*
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* @param mixed $link mysql link
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*
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* @return array array of replicated databases
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*/
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function PMA_replication_master_replicated_dbs($link = null)
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{
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// let's find out, which databases are replicated
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$data = PMA_DBI_fetch_result('SHOW MASTER STATUS', null, null, $link);
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$do_db = array();
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$ignore_db = array();
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if (! empty($data[0]['Binlog_Do_DB'])) {
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$do_db = explode(',', $data[0]['Binlog_Do_DB']);
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}
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if (! empty($data[0]['Binlog_Ignore_DB'])) {
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$ignore_db = explode(',', $data[0]['Binlog_Ignore_DB']);
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}
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$tmp_alldbs = PMA_DBI_query('SHOW DATABASES;', $link);
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while ($tmp_row = PMA_DBI_fetch_row($tmp_alldbs)) {
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if (PMA_is_system_schema($tmp_row[0])) {
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continue;
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}
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if (count($do_db) == 0) {
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if (array_search($tmp_row[0], $ignore_db) !== false) {
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continue;
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}
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$dblist[] = $tmp_row[0];
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} else {
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if (array_search($tmp_row[0], $do_db) !== false) {
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$dblist[] = $tmp_row[0];
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}
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}
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} // end while
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return $link;
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}
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?>
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