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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Replication helpers
*
* @package PhpMyAdmin
*/
if (! defined('PHPMYADMIN')) {
exit;
}
/**
* get master replication from server
*/
$server_master_replication = $GLOBALS['dbi']->fetchResult('SHOW MASTER STATUS');
/**
* set selected master server
*/
if (! empty($_REQUEST['master_connection'])) {
/**
* check for multi-master replication functionality
*/
$server_slave_multi_replication = $GLOBALS['dbi']->fetchResult(
'SHOW ALL SLAVES STATUS'
);
if ($server_slave_multi_replication) {
$GLOBALS['dbi']->query(
"SET @@default_master_connection = '" . PMA_Util::sqlAddSlashes(
$_REQUEST['master_connection']
) . "'"
);
$GLOBALS['url_params']['master_connection'] = $_REQUEST['master_connection'];
}
}
/**
* get slave replication from server
*/
$server_slave_replication = $GLOBALS['dbi']->fetchResult('SHOW SLAVE STATUS');
/**
* replication types
*/
$replication_types = array('master', 'slave');
/**
* define variables for master status
*/
$master_variables = array(
'File',
'Position',
'Binlog_Do_DB',
'Binlog_Ignore_DB',
);
/**
* Define variables for slave status
*/
$slave_variables = array(
'Slave_IO_State',
'Master_Host',
'Master_User',
'Master_Port',
'Connect_Retry',
'Master_Log_File',
'Read_Master_Log_Pos',
'Relay_Log_File',
'Relay_Log_Pos',
'Relay_Master_Log_File',
'Slave_IO_Running',
'Slave_SQL_Running',
'Replicate_Do_DB',
'Replicate_Ignore_DB',
'Replicate_Do_Table',
'Replicate_Ignore_Table',
'Replicate_Wild_Do_Table',
'Replicate_Wild_Ignore_Table',
'Last_Errno',
'Last_Error',
'Skip_Counter',
'Exec_Master_Log_Pos',
'Relay_Log_Space',
'Until_Condition',
'Until_Log_File',
'Until_Log_Pos',
'Master_SSL_Allowed',
'Master_SSL_CA_File',
'Master_SSL_CA_Path',
'Master_SSL_Cert',
'Master_SSL_Cipher',
'Master_SSL_Key',
'Seconds_Behind_Master',
);
/**
* define important variables, which need to be watched for
* correct running of replication in slave mode
*
* @usedby PMA_getHtmlForReplicationStatusTable()
*/
// TODO change to regexp or something, to allow for negative match.
// To e.g. highlight 'Last_Error'
//
$slave_variables_alerts = array(
'Slave_IO_Running' => 'No',
'Slave_SQL_Running' => 'No',
);
$slave_variables_oks = array(
'Slave_IO_Running' => 'Yes',
'Slave_SQL_Running' => 'Yes',
);
// check which replication is available and
// set $server_{master/slave}_status and assign values
// replication info is more easily passed to functions
$GLOBALS['replication_info'] = array();
foreach ($replication_types as $type) {
if (count(${"server_{$type}_replication"}) > 0) {
$GLOBALS['replication_info'][$type]['status'] = true;
} else {
$GLOBALS['replication_info'][$type]['status'] = false;
}
if ($GLOBALS['replication_info'][$type]['status']) {
if ($type == "master") {
PMA_fillReplicationInfo(
$type, 'Do_DB', $server_master_replication[0],
'Binlog_Do_DB'
);
PMA_fillReplicationInfo(
$type, 'Ignore_DB', $server_master_replication[0],
'Binlog_Ignore_DB'
);
} elseif ($type == "slave") {
PMA_fillReplicationInfo(
$type, 'Do_DB', $server_slave_replication[0],
'Replicate_Do_DB'
);
PMA_fillReplicationInfo(
$type, 'Ignore_DB', $server_slave_replication[0],
'Replicate_Ignore_DB'
);
PMA_fillReplicationInfo(
$type, 'Do_Table', $server_slave_replication[0],
'Replicate_Do_Table'
);
PMA_fillReplicationInfo(
$type, 'Ignore_Table', $server_slave_replication[0],
'Replicate_Ignore_Table'
);
PMA_fillReplicationInfo(
$type, 'Wild_Do_Table', $server_slave_replication[0],
'Replicate_Wild_Do_Table'
);
PMA_fillReplicationInfo(
$type, 'Wild_Ignore_Table', $server_slave_replication[0],
'Replicate_Wild_Ignore_Table'
);
}
}
}
/**
* Fill global replication_info variable.
*
* @param string $type Type: master, slave
* @param string $replicationInfoKey Key in replication_info variable
* @param array $mysqlInfo MySQL data about replication
* @param string $mysqlKey MySQL key
*
* @return array
*/
function PMA_fillReplicationInfo(
$type, $replicationInfoKey, $mysqlInfo, $mysqlKey
) {
$GLOBALS['replication_info'][$type][$replicationInfoKey]
= empty($mysqlInfo[$mysqlKey])
? array()
: explode(
",",
$mysqlInfo[$mysqlKey]
);
return $GLOBALS['replication_info'][$type][$replicationInfoKey];
}
/**
* Extracts database or table name from string
*
* @param string $string contains "dbname.tablename"
* @param string $what what to extract (db|table)
*
* @return string the extracted part
*/
function PMA_extractDbOrTable($string, $what = 'db')
{
$list = explode(".", $string);
if ('db' == $what) {
return $list[0];
} else {
return $list[1];
}
}
/**
* Configures replication slave
*
* @param string $action possible values: START or STOP
* @param string $control default: null,
* possible values: SQL_THREAD or IO_THREAD or null.
* If it is set to null, it controls both
* SQL_THREAD and IO_THREAD
* @param mixed $link mysql link
*
* @return mixed output of DatabaseInterface::tryQuery
*/
function PMA_Replication_Slave_control($action, $control = null, $link = null)
{
$action = /*overload*/mb_strtoupper($action);
$control = /*overload*/mb_strtoupper($control);
if ($action != "START" && $action != "STOP") {
return -1;
}
if ($control != "SQL_THREAD" && $control != "IO_THREAD" && $control != null) {
return -1;
}
return $GLOBALS['dbi']->tryQuery($action . " SLAVE " . $control . ";", $link);
}
/**
* Changes master for replication slave
*
* @param string $user replication user on master
* @param string $password password for the user
* @param string $host master's hostname or IP
* @param int $port port, where mysql is running
* @param array $pos position of mysql replication,
* array should contain fields File and Position
* @param bool $stop shall we stop slave?
* @param bool $start shall we start slave?
* @param mixed $link mysql link
*
* @return string output of CHANGE MASTER mysql command
*/
function PMA_Replication_Slave_changeMaster($user, $password, $host, $port,
$pos, $stop = true, $start = true, $link = null
) {
if ($stop) {
PMA_Replication_Slave_control("STOP", null, $link);
}
$out = $GLOBALS['dbi']->tryQuery(
'CHANGE MASTER TO ' .
'MASTER_HOST=\'' . $host . '\',' .
'MASTER_PORT=' . ($port * 1) . ',' .
'MASTER_USER=\'' . $user . '\',' .
'MASTER_PASSWORD=\'' . $password . '\',' .
'MASTER_LOG_FILE=\'' . $pos["File"] . '\',' .
'MASTER_LOG_POS=' . $pos["Position"] . ';', $link
);
if ($start) {
PMA_Replication_Slave_control("START", null, $link);
}
return $out;
}
/**
* This function provides connection to remote mysql server
*
* @param string $user mysql username
* @param string $password password for the user
* @param string $host mysql server's hostname or IP
* @param int $port mysql remote port
* @param string $socket path to unix socket
*
* @return mixed $link mysql link on success
*/
function PMA_Replication_connectToMaster(
$user, $password, $host = null, $port = null, $socket = null
) {
$server = array();
$server["host"] = $host;
$server["port"] = $port;
$server["socket"] = $socket;
// 5th parameter set to true means that it's an auxiliary connection
// and we must not go back to login page if it fails
return $GLOBALS['dbi']->connect($user, $password, false, $server, true);
}
/**
* Fetches position and file of current binary log on master
*
* @param mixed $link mysql link
*
* @return array an array containing File and Position in MySQL replication
* on master server, useful for PMA_Replication_Slave_changeMaster
*/
function PMA_Replication_Slave_binLogMaster($link = null)
{
$data = $GLOBALS['dbi']->fetchResult('SHOW MASTER STATUS', null, null, $link);
$output = array();
if (! empty($data)) {
$output["File"] = $data[0]["File"];
$output["Position"] = $data[0]["Position"];
}
return $output;
}
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