Viewing file:  replication.inc.php (13.28 KB) -rw-r--r--
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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
*
* @package phpMyAdmin
*/
if (! defined('PHPMYADMIN')) {
exit;
}
/**
* get master replication from server
*/
$server_master_replication = PMA_DBI_fetch_result('SHOW MASTER STATUS');
/**
* get slave replication from server
*/
$server_slave_replication = PMA_DBI_fetch_result('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_replication_print_status_table()
*/
// 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
/*
* @todo use $replication_info everywhere instead of the generated variable names
*/
$replication_info = array();
foreach ($replication_types as $type) {
if (count(${"server_{$type}_replication"}) > 0) {
${"server_{$type}_status"} = true;
$replication_info[$type]['status'] = true;
} else {
${"server_{$type}_status"} = false;
$replication_info[$type]['status'] = false;
}
if (${"server_{$type}_status"}) {
if ($type == "master") {
${"server_{$type}_Do_DB"} = explode(",", $server_master_replication[0]["Binlog_Do_DB"]);
$replication_info[$type]['Do_DB'] = ${"server_{$type}_Do_DB"};
${"server_{$type}_Ignore_DB"} = explode(",", $server_master_replication[0]["Binlog_Ignore_DB"]);
$replication_info[$type]['Ignore_DB'] = ${"server_{$type}_Ignore_DB"};
} elseif ($type == "slave") {
${"server_{$type}_Do_DB"} = explode(",", $server_slave_replication[0]["Replicate_Do_DB"]);
$replication_info[$type]['Do_DB'] = ${"server_{$type}_Do_DB"};
${"server_{$type}_Ignore_DB"} = explode(",", $server_slave_replication[0]["Replicate_Ignore_DB"]);
$replication_info[$type]['Ignore_DB'] = ${"server_{$type}_Ignore_DB"};
${"server_{$type}_Do_Table"} = explode(",", $server_slave_replication[0]["Replicate_Do_Table"]);
$replication_info[$type]['Do_Table'] = ${"server_{$type}_Do_Table"};
${"server_{$type}_Ignore_Table"} = explode(",", $server_slave_replication[0]["Replicate_Ignore_Table"]);
$replication_info[$type]['Ignore_Table'] = ${"server_{$type}_Ignore_Table"};
${"server_{$type}_Wild_Do_Table"} = explode(",", $server_slave_replication[0]["Replicate_Wild_Do_Table"]);
$replication_info[$type]['Wild_Do_Table'] = ${"server_{$type}_Wild_Do_Table"};
${"server_{$type}_Wild_Ignore_Table"} = explode(",", $server_slave_replication[0]["Replicate_Wild_Ignore_Table"]);
$replication_info[$type]['Wild_Ignore_Table'] = ${"server_{$type}_Wild_Ignore_Table"};
}
}
}
/**
* @param $string contains "dbname.tablename"
* @param $what what to extract (db|table)
* @return $string the extracted part
*/
function PMA_extract_db_or_table($string, $what = 'db') {
$list = explode(".", $string);
if ('db' == $what) {
return $list[0];
} else {
return $list[1];
}
}
/**
* @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 $link - mysql link
*
* @return mixed output of PMA_DBI_try_query
*/
function PMA_replication_slave_control($action, $control = null, $link = null) {
$action = strtoupper($action);
$control = strtoupper($control);
if ($action != "START" && $action != "STOP") {
return -1;
}
if ($control != "SQL_THREAD" && $control != "IO_THREAD" && $control != null) {
return -1;
}
return PMA_DBI_try_query($action . " SLAVE " . $control . ";", $link);
}
/**
* @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 boolean $stop - shall we stop slave?
* @param boolean $start - shall we start slave?
* @param mixed $link - mysql link
*
* @return output of CHANGE MASTER mysql command
*/
function PMA_replication_slave_change_master($user, $password, $host, $port, $pos, $stop = true, $start = true, $link = null) {
if ($stop) {
PMA_replication_slave_control("STOP", null, $link);
}
$out = PMA_DBI_try_query('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 $link mysql link on success
*/
function PMA_replication_connect_to_master($user, $password, $host = null, $port = null, $socket = null) {
$server = array();
$server["host"] = $host;
$server["port"] = $port;
$server["socket"] = $socket;
// 5th parameter set to true means that it's an auxiliary connection
// and we must not go back to login page if it fails
return PMA_DBI_connect($user, $password, false, $server, true);
}
/**
* @param $link - mysql link
*
* @return array - containing File and Position in MySQL replication on master server, useful for PMA_replication_slave_change_master
*/
function PMA_replication_slave_bin_log_master($link = null) {
$data = PMA_DBI_fetch_result('SHOW MASTER STATUS', null, null, $link);
$output = array();
if (! empty($data)) {
$output["File"] = $data[0]["File"];
$output["Position"] = $data[0]["Position"];
}
return $output;
}
/**
* Get list of replicated databases on master server
*
* @param mixed mysql link
*
* @return array array of replicated databases
*/
function PMA_replication_master_replicated_dbs($link = null) {
$data = PMA_DBI_fetch_result('SHOW MASTER STATUS', null, null, $link); // let's find out, which databases are replicated
$do_db = array();
$ignore_db = array();
if (! empty($data[0]['Binlog_Do_DB'])) {
$do_db = explode(',', $data[0]['Binlog_Do_DB']);
}
if (! empty($data[0]['Binlog_Ignore_DB'])) {
$ignore_db = explode(',', $data[0]['Binlog_Ignore_DB']);
}
$tmp_alldbs = PMA_DBI_query('SHOW DATABASES;', $link);
while ($tmp_row = PMA_DBI_fetch_row($tmp_alldbs)) {
if ($tmp_row[0] == 'information_schema')
continue;
if (count($do_db) == 0) {
if (array_search($tmp_row[0], $ignore_db) !== false) {
continue;
}
$dblist[] = $tmp_row[0];
} else {
if (array_search($tmp_row[0], $do_db) !== false) {
$dblist[] = $tmp_row[0];
}
}
} // end while
return $link;
}
/**
* This function provides synchronization of structure and data between two mysql servers.
* TODO: improve code sharing between the function and synchronization
*
* @param String $db - name of database, which should be synchronized
* @param mixed $src_link - link of source server, note: if the server is current PMA server, use null
* @param mixed $trg_link - link of target server, note: if the server is current PMA server, use null
* @param boolean $data - if true, then data will be copied as well
*/
function PMA_replication_synchronize_db($db, $src_link, $trg_link, $data = true) {
$src_db = $trg_db = $db;
$src_connection = PMA_DBI_select_db($src_db, $src_link);
$trg_connection = PMA_DBI_select_db($trg_db, $trg_link);
$src_tables = PMA_DBI_get_tables($src_db, $src_link);
$source_tables_num = sizeof($src_tables);
$trg_tables = PMA_DBI_get_tables($trg_db, $trg_link);
$target_tables_num = sizeof($trg_tables);
/**
* initializing arrays to save table names
*/
$unmatched_num_src = 0;
$source_tables_uncommon = array();
$unmatched_num_trg = 0;
$target_tables_uncommon = array();
$matching_tables = array();
$matching_tables_num = 0;
/**
* Criterion for matching tables is just their names.
* Finding the uncommon tables for the source database
* BY comparing the matching tables with all the tables in the source database
*/
PMA_getMatchingTables($trg_tables, $src_tables, $matching_tables, $source_tables_uncommon);
/**
* Finding the uncommon tables for the target database
* BY comparing the matching tables with all the tables in the target database
*/
PMA_getNonMatchingTargetTables($trg_tables, $matching_tables, $target_tables_uncommon);
/**
*
* Comparing Data In the Matching Tables
* It is assumed that the matching tables are structurally
* and typely exactly the same
*/
$fields_num = array();
$matching_tables_fields = array();
$matching_tables_keys = array();
$insert_array = array(array(array()));
$update_array = array(array(array()));
$delete_array = array();
$row_count = array();
$uncommon_tables_fields = array();
$matching_tables_num = sizeof($matching_tables);
for ($i = 0; $i < sizeof($matching_tables); $i++) {
PMA_dataDiffInTables($src_db, $trg_db, $src_link, $trg_link, $matching_tables, $matching_tables_fields, $update_array, $insert_array,
$delete_array, $fields_num, $i, $matching_tables_keys);
}
for ($j = 0; $j < sizeof($source_tables_uncommon); $j++) {
PMA_dataDiffInUncommonTables($source_tables_uncommon, $src_db, $src_link, $j, $row_count);
}
/**
* INTEGRATION OF STRUCTURE DIFFERENCE CODE
*
*/
$source_columns = array();
$target_columns = array();
$alter_str_array = array(array());
$add_column_array = array(array());
$uncommon_columns = array();
$target_tables_keys = array();
$source_indexes = array();
$target_indexes = array();
$add_indexes_array = array();
$remove_indexes_array = array();
$criteria = array('Field', 'Type', 'Null', 'Collation', 'Key', 'Default', 'Comment');
for ($counter = 0; $counter < $matching_tables_num; $counter++) {
PMA_structureDiffInTables($src_db, $trg_db, $src_link, $trg_link, $matching_tables, $source_columns,
$target_columns, $alter_str_array, $add_column_array, $uncommon_columns, $criteria, $target_tables_keys, $counter);
PMA_indexesDiffInTables($src_db, $trg_db, $src_link, $trg_link, $matching_tables, $source_indexes, $target_indexes,
$add_indexes_array, $alter_indexes_array,$remove_indexes_array, $counter);
}
$matching_table_data_diff = array();
$matching_table_structure_diff = array();
$uncommon_table_structure_diff = array();
$uncommon_table_data_diff = array();
$uncommon_tables = $source_tables_uncommon;
/**
* Generating Create Table query for all the non-matching tables present in Source but not in Target and populating tables.
*/
for($q = 0; $q < sizeof($source_tables_uncommon); $q++) {
if (isset($uncommon_tables[$q])) {
PMA_createTargetTables($src_db, $trg_db, $src_link, $trg_link, $source_tables_uncommon, $q, $uncommon_tables_fields, false);
}
if (isset($row_count[$q]) && $data) {
PMA_populateTargetTables($src_db, $trg_db, $src_link, $trg_link, $source_tables_uncommon, $q, $uncommon_tables_fields, false);
}
}
}
?>
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