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608 lines
21 KiB
608 lines
21 KiB
2 years ago
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<?php
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/**
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* Functions for the replication GUI
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*/
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declare(strict_types=1);
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namespace PhpMyAdmin;
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use PhpMyAdmin\Query\Utilities;
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use function __;
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use function htmlspecialchars;
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use function in_array;
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use function mb_strrpos;
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use function mb_strtolower;
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use function mb_substr;
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use function sprintf;
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use function str_replace;
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use function strlen;
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use function strtok;
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use function time;
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/**
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* Functions for the replication GUI
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*/
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class ReplicationGui
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{
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/** @var Replication */
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private $replication;
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/** @var Template */
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private $template;
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/**
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* @param Replication $replication Replication instance
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* @param Template $template Template instance
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*/
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public function __construct(Replication $replication, Template $template)
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{
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$this->replication = $replication;
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$this->template = $template;
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}
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/**
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* returns HTML for error message
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*
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* @return string HTML code
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*/
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public function getHtmlForErrorMessage(): string
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{
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$html = '';
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if (isset($_SESSION['replication']['sr_action_status'], $_SESSION['replication']['sr_action_info'])) {
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if ($_SESSION['replication']['sr_action_status'] === 'error') {
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$errorMessage = $_SESSION['replication']['sr_action_info'];
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$html .= Message::error($errorMessage)->getDisplay();
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$_SESSION['replication']['sr_action_status'] = 'unknown';
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} elseif ($_SESSION['replication']['sr_action_status'] === 'success') {
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$successMessage = $_SESSION['replication']['sr_action_info'];
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$html .= Message::success($successMessage)->getDisplay();
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$_SESSION['replication']['sr_action_status'] = 'unknown';
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}
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}
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return $html;
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}
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/**
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* returns HTML for primary replication
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*
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* @return string HTML code
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*/
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public function getHtmlForPrimaryReplication(): string
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{
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global $dbi;
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if (! isset($_POST['repl_clear_scr'])) {
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$primaryStatusTable = $this->getHtmlForReplicationStatusTable('primary', true, false);
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$replicas = $dbi->fetchResult('SHOW SLAVE HOSTS', null, null);
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$urlParams = $GLOBALS['urlParams'];
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$urlParams['primary_add_user'] = true;
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$urlParams['repl_clear_scr'] = true;
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}
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if (isset($_POST['primary_add_user'])) {
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$primaryAddReplicaUser = $this->getHtmlForReplicationPrimaryAddReplicaUser();
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}
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return $this->template->render('server/replication/primary_replication', [
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'clear_screen' => isset($_POST['repl_clear_scr']),
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'primary_status_table' => $primaryStatusTable ?? '',
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'replicas' => $replicas ?? [],
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'url_params' => $urlParams ?? [],
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'primary_add_user' => isset($_POST['primary_add_user']),
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'primary_add_replica_user' => $primaryAddReplicaUser ?? '',
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]);
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}
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/**
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* returns HTML for primary replication configuration
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*
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* @return string HTML code
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*/
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public function getHtmlForPrimaryConfiguration(): string
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{
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$databaseMultibox = $this->getHtmlForReplicationDbMultibox();
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return $this->template->render(
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'server/replication/primary_configuration',
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['database_multibox' => $databaseMultibox]
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);
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}
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/**
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* returns HTML for replica replication configuration
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*
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* @param bool $serverReplicaStatus Whether it is Primary or Replica
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* @param array $serverReplicaReplication Replica replication
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*
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* @return string HTML code
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*/
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public function getHtmlForReplicaConfiguration(
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$serverReplicaStatus,
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array $serverReplicaReplication
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): string {
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global $dbi;
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$serverReplicaMultiReplication = $dbi->fetchResult('SHOW ALL SLAVES STATUS');
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if ($serverReplicaStatus) {
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$urlParams = $GLOBALS['urlParams'];
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$urlParams['sr_take_action'] = true;
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$urlParams['sr_replica_server_control'] = true;
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if ($serverReplicaReplication[0]['Slave_IO_Running'] === 'No') {
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$urlParams['sr_replica_action'] = 'start';
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} else {
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$urlParams['sr_replica_action'] = 'stop';
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}
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$urlParams['sr_replica_control_param'] = 'IO_THREAD';
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$replicaControlIoLink = Url::getCommon($urlParams, '', false);
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if ($serverReplicaReplication[0]['Slave_SQL_Running'] === 'No') {
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$urlParams['sr_replica_action'] = 'start';
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} else {
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$urlParams['sr_replica_action'] = 'stop';
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}
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$urlParams['sr_replica_control_param'] = 'SQL_THREAD';
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$replicaControlSqlLink = Url::getCommon($urlParams, '', false);
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if (
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$serverReplicaReplication[0]['Slave_IO_Running'] === 'No'
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|| $serverReplicaReplication[0]['Slave_SQL_Running'] === 'No'
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) {
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$urlParams['sr_replica_action'] = 'start';
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} else {
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$urlParams['sr_replica_action'] = 'stop';
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}
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$urlParams['sr_replica_control_param'] = null;
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$replicaControlFullLink = Url::getCommon($urlParams, '', false);
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$urlParams['sr_replica_action'] = 'reset';
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$replicaControlResetLink = Url::getCommon($urlParams, '', false);
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$urlParams = $GLOBALS['urlParams'];
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$urlParams['sr_take_action'] = true;
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$urlParams['sr_replica_skip_error'] = true;
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$replicaSkipErrorLink = Url::getCommon($urlParams, '', false);
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$urlParams = $GLOBALS['urlParams'];
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$urlParams['replica_configure'] = true;
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$urlParams['repl_clear_scr'] = true;
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$reconfigurePrimaryLink = Url::getCommon($urlParams, '', false);
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$replicaStatusTable = $this->getHtmlForReplicationStatusTable('replica', true, false);
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$replicaIoRunning = $serverReplicaReplication[0]['Slave_IO_Running'] !== 'No';
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$replicaSqlRunning = $serverReplicaReplication[0]['Slave_SQL_Running'] !== 'No';
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}
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return $this->template->render('server/replication/replica_configuration', [
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'server_replica_multi_replication' => $serverReplicaMultiReplication,
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'url_params' => $GLOBALS['urlParams'],
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'primary_connection' => $_POST['primary_connection'] ?? '',
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'server_replica_status' => $serverReplicaStatus,
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'replica_status_table' => $replicaStatusTable ?? '',
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'replica_sql_running' => $replicaSqlRunning ?? false,
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'replica_io_running' => $replicaIoRunning ?? false,
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'replica_control_full_link' => $replicaControlFullLink ?? '',
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'replica_control_reset_link' => $replicaControlResetLink ?? '',
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'replica_control_sql_link' => $replicaControlSqlLink ?? '',
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'replica_control_io_link' => $replicaControlIoLink ?? '',
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'replica_skip_error_link' => $replicaSkipErrorLink ?? '',
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'reconfigure_primary_link' => $reconfigurePrimaryLink ?? '',
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'has_replica_configure' => isset($_POST['replica_configure']),
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]);
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}
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/**
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* returns HTML code for selecting databases
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*
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* @return string HTML code
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*/
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public function getHtmlForReplicationDbMultibox(): string
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{
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$databases = [];
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foreach ($GLOBALS['dblist']->databases as $database) {
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if (Utilities::isSystemSchema($database)) {
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continue;
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}
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$databases[] = $database;
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}
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return $this->template->render('server/replication/database_multibox', ['databases' => $databases]);
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}
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/**
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* returns HTML for changing primary
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*
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* @param string $submitName submit button name
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*
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* @return string HTML code
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*/
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public function getHtmlForReplicationChangePrimary($submitName): string
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{
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[
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$usernameLength,
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$hostnameLength,
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] = $this->getUsernameHostnameLength();
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return $this->template->render('server/replication/change_primary', [
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'server_id' => time(),
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'username_length' => $usernameLength,
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'hostname_length' => $hostnameLength,
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'submit_name' => $submitName,
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]);
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}
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/**
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* This function returns html code for table with replication status.
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*
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* @param string $type either primary or replica
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* @param bool $isHidden if true, then default style is set to hidden, default value false
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* @param bool $hasTitle if true, then title is displayed, default true
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*
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* @return string HTML code
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*/
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public function getHtmlForReplicationStatusTable(
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$type,
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$isHidden = false,
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$hasTitle = true
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): string {
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global $dbi;
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$replicationInfo = new ReplicationInfo($dbi);
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$replicationInfo->load($_POST['primary_connection'] ?? null);
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$replicationVariables = $replicationInfo->primaryVariables;
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$variablesAlerts = null;
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$variablesOks = null;
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$serverReplication = $replicationInfo->getPrimaryStatus();
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if ($type === 'replica') {
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$replicationVariables = $replicationInfo->replicaVariables;
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$variablesAlerts = [
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'Slave_IO_Running' => 'No',
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'Slave_SQL_Running' => 'No',
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];
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$variablesOks = [
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'Slave_IO_Running' => 'Yes',
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'Slave_SQL_Running' => 'Yes',
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];
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$serverReplication = $replicationInfo->getReplicaStatus();
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}
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$variables = [];
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foreach ($replicationVariables as $variable) {
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$serverReplicationVariable = isset($serverReplication[0])
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? $serverReplication[0][$variable]
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: '';
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$variables[$variable] = [
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'name' => $variable,
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'status' => '',
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'value' => $serverReplicationVariable,
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];
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if (isset($variablesAlerts[$variable]) && $variablesAlerts[$variable] === $serverReplicationVariable) {
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$variables[$variable]['status'] = 'text-danger';
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} elseif (isset($variablesOks[$variable]) && $variablesOks[$variable] === $serverReplicationVariable) {
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$variables[$variable]['status'] = 'text-success';
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}
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$variablesWrap = [
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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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];
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if (! in_array($variable, $variablesWrap)) {
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continue;
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}
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$variables[$variable]['value'] = str_replace(',', ', ', $serverReplicationVariable);
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}
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return $this->template->render('server/replication/status_table', [
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'type' => $type,
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'is_hidden' => $isHidden,
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'has_title' => $hasTitle,
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'variables' => $variables,
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]);
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}
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/**
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* get the correct username and hostname lengths for this MySQL server
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*
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* @return array<int,int> username length, hostname length
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*/
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public function getUsernameHostnameLength(): array
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{
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global $dbi;
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$fieldsInfo = $dbi->getColumns('mysql', 'user');
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$usernameLength = 16;
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$hostnameLength = 41;
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foreach ($fieldsInfo as $val) {
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if ($val['Field'] === 'User') {
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strtok($val['Type'], '()');
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$v = strtok('()');
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if (Util::isInteger($v)) {
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$usernameLength = (int) $v;
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}
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} elseif ($val['Field'] === 'Host') {
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strtok($val['Type'], '()');
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$v = strtok('()');
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if (Util::isInteger($v)) {
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$hostnameLength = (int) $v;
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}
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}
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}
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return [
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$usernameLength,
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$hostnameLength,
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];
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}
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/**
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* returns html code to add a replication replica user to the primary
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*
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* @return string HTML code
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*/
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public function getHtmlForReplicationPrimaryAddReplicaUser(): string
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{
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global $dbi;
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[
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$usernameLength,
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$hostnameLength,
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] = $this->getUsernameHostnameLength();
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if (isset($_POST['username']) && strlen($_POST['username']) === 0) {
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$GLOBALS['pred_username'] = 'any';
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}
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$username = '';
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if (! empty($_POST['username'])) {
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$username = $GLOBALS['new_username'] ?? $_POST['username'];
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}
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$currentUser = $dbi->fetchValue('SELECT USER();');
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if (! empty($currentUser)) {
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$userHost = str_replace(
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|
"'",
|
||
|
|
'',
|
||
|
|
mb_substr(
|
||
|
|
$currentUser,
|
||
|
|
mb_strrpos($currentUser, '@') + 1
|
||
|
|
)
|
||
|
|
);
|
||
|
|
if ($userHost !== 'localhost' && $userHost !== '127.0.0.1') {
|
||
|
|
$thisHost = $userHost;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// when we start editing a user, $GLOBALS['pred_hostname'] is not defined
|
||
|
|
if (! isset($GLOBALS['pred_hostname']) && isset($_POST['hostname'])) {
|
||
|
|
switch (mb_strtolower($_POST['hostname'])) {
|
||
|
|
case 'localhost':
|
||
|
|
case '127.0.0.1':
|
||
|
|
$GLOBALS['pred_hostname'] = 'localhost';
|
||
|
|
break;
|
||
|
|
case '%':
|
||
|
|
$GLOBALS['pred_hostname'] = 'any';
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
$GLOBALS['pred_hostname'] = 'userdefined';
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $this->template->render('server/replication/primary_add_replica_user', [
|
||
|
|
'username_length' => $usernameLength,
|
||
|
|
'hostname_length' => $hostnameLength,
|
||
|
|
'has_username' => isset($_POST['username']),
|
||
|
|
'username' => $username,
|
||
|
|
'hostname' => $_POST['hostname'] ?? '',
|
||
|
|
'predefined_username' => $GLOBALS['pred_username'] ?? '',
|
||
|
|
'predefined_hostname' => $GLOBALS['pred_hostname'] ?? '',
|
||
|
|
'this_host' => $thisHost ?? null,
|
||
|
|
]);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* handle control requests
|
||
|
|
*/
|
||
|
|
public function handleControlRequest(): void
|
||
|
|
{
|
||
|
|
if (! isset($_POST['sr_take_action'])) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
$refresh = false;
|
||
|
|
$result = false;
|
||
|
|
$messageSuccess = '';
|
||
|
|
$messageError = '';
|
||
|
|
|
||
|
|
if (isset($_POST['replica_changeprimary']) && ! $GLOBALS['cfg']['AllowArbitraryServer']) {
|
||
|
|
$_SESSION['replication']['sr_action_status'] = 'error';
|
||
|
|
$_SESSION['replication']['sr_action_info'] = __(
|
||
|
|
'Connection to server is disabled, please enable'
|
||
|
|
. ' $cfg[\'AllowArbitraryServer\'] in phpMyAdmin configuration.'
|
||
|
|
);
|
||
|
|
} elseif (isset($_POST['replica_changeprimary'])) {
|
||
|
|
$result = $this->handleRequestForReplicaChangePrimary();
|
||
|
|
} elseif (isset($_POST['sr_replica_server_control'])) {
|
||
|
|
$result = $this->handleRequestForReplicaServerControl();
|
||
|
|
$refresh = true;
|
||
|
|
|
||
|
|
switch ($_POST['sr_replica_action']) {
|
||
|
|
case 'start':
|
||
|
|
$messageSuccess = __('Replication started successfully.');
|
||
|
|
$messageError = __('Error starting replication.');
|
||
|
|
break;
|
||
|
|
case 'stop':
|
||
|
|
$messageSuccess = __('Replication stopped successfully.');
|
||
|
|
$messageError = __('Error stopping replication.');
|
||
|
|
break;
|
||
|
|
case 'reset':
|
||
|
|
$messageSuccess = __('Replication resetting successfully.');
|
||
|
|
$messageError = __('Error resetting replication.');
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
$messageSuccess = __('Success.');
|
||
|
|
$messageError = __('Error.');
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
} elseif (isset($_POST['sr_replica_skip_error'])) {
|
||
|
|
$result = $this->handleRequestForReplicaSkipError();
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($refresh) {
|
||
|
|
$response = ResponseRenderer::getInstance();
|
||
|
|
if ($response->isAjax()) {
|
||
|
|
$response->setRequestStatus($result);
|
||
|
|
$response->addJSON(
|
||
|
|
'message',
|
||
|
|
$result
|
||
|
|
? Message::success($messageSuccess)
|
||
|
|
: Message::error($messageError)
|
||
|
|
);
|
||
|
|
} else {
|
||
|
|
Core::sendHeaderLocation(
|
||
|
|
'./index.php?route=/server/replication'
|
||
|
|
. Url::getCommonRaw($GLOBALS['urlParams'], '&')
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
unset($refresh);
|
||
|
|
}
|
||
|
|
|
||
|
|
public function handleRequestForReplicaChangePrimary(): bool
|
||
|
|
{
|
||
|
|
global $dbi;
|
||
|
|
|
||
|
|
$sr = [
|
||
|
|
'username' => $dbi->escapeString($_POST['username']),
|
||
|
|
'pma_pw' => $dbi->escapeString($_POST['pma_pw']),
|
||
|
|
'hostname' => $dbi->escapeString($_POST['hostname']),
|
||
|
|
'port' => (int) $dbi->escapeString($_POST['text_port']),
|
||
|
|
];
|
||
|
|
|
||
|
|
$_SESSION['replication']['m_username'] = $sr['username'];
|
||
|
|
$_SESSION['replication']['m_password'] = $sr['pma_pw'];
|
||
|
|
$_SESSION['replication']['m_hostname'] = $sr['hostname'];
|
||
|
|
$_SESSION['replication']['m_port'] = $sr['port'];
|
||
|
|
$_SESSION['replication']['m_correct'] = '';
|
||
|
|
$_SESSION['replication']['sr_action_status'] = 'error';
|
||
|
|
$_SESSION['replication']['sr_action_info'] = __('Unknown error');
|
||
|
|
|
||
|
|
// Attempt to connect to the new primary server
|
||
|
|
$linkToPrimary = $this->replication->connectToPrimary(
|
||
|
|
$sr['username'],
|
||
|
|
$sr['pma_pw'],
|
||
|
|
$sr['hostname'],
|
||
|
|
$sr['port']
|
||
|
|
);
|
||
|
|
|
||
|
|
if (! $linkToPrimary) {
|
||
|
|
$_SESSION['replication']['sr_action_status'] = 'error';
|
||
|
|
$_SESSION['replication']['sr_action_info'] = sprintf(
|
||
|
|
__('Unable to connect to primary %s.'),
|
||
|
|
htmlspecialchars($sr['hostname'])
|
||
|
|
);
|
||
|
|
} else {
|
||
|
|
// Read the current primary position
|
||
|
|
$position = $this->replication->replicaBinLogPrimary(DatabaseInterface::CONNECT_AUXILIARY);
|
||
|
|
|
||
|
|
if (empty($position)) {
|
||
|
|
$_SESSION['replication']['sr_action_status'] = 'error';
|
||
|
|
$_SESSION['replication']['sr_action_info'] = __(
|
||
|
|
'Unable to read primary log position. Possible privilege problem on primary.'
|
||
|
|
);
|
||
|
|
} else {
|
||
|
|
$_SESSION['replication']['m_correct'] = true;
|
||
|
|
|
||
|
|
if (
|
||
|
|
! $this->replication->replicaChangePrimary(
|
||
|
|
$sr['username'],
|
||
|
|
$sr['pma_pw'],
|
||
|
|
$sr['hostname'],
|
||
|
|
$sr['port'],
|
||
|
|
$position,
|
||
|
|
true,
|
||
|
|
false,
|
||
|
|
DatabaseInterface::CONNECT_USER
|
||
|
|
)
|
||
|
|
) {
|
||
|
|
$_SESSION['replication']['sr_action_status'] = 'error';
|
||
|
|
$_SESSION['replication']['sr_action_info'] = __('Unable to change primary!');
|
||
|
|
} else {
|
||
|
|
$_SESSION['replication']['sr_action_status'] = 'success';
|
||
|
|
$_SESSION['replication']['sr_action_info'] = sprintf(
|
||
|
|
__('Primary server changed successfully to %s.'),
|
||
|
|
htmlspecialchars($sr['hostname'])
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return $_SESSION['replication']['sr_action_status'] === 'success';
|
||
|
|
}
|
||
|
|
|
||
|
|
public function handleRequestForReplicaServerControl(): bool
|
||
|
|
{
|
||
|
|
global $dbi;
|
||
|
|
|
||
|
|
/** @var string|null $control */
|
||
|
|
$control = $_POST['sr_replica_control_param'] ?? null;
|
||
|
|
|
||
|
|
if ($_POST['sr_replica_action'] === 'reset') {
|
||
|
|
$qStop = $this->replication->replicaControl('STOP', null, DatabaseInterface::CONNECT_USER);
|
||
|
|
$qReset = $dbi->tryQuery('RESET SLAVE;');
|
||
|
|
$qStart = $this->replication->replicaControl('START', null, DatabaseInterface::CONNECT_USER);
|
||
|
|
|
||
|
|
$result = $qStop !== false && $qStop !== -1 &&
|
||
|
|
$qReset !== false &&
|
||
|
|
$qStart !== false && $qStart !== -1;
|
||
|
|
} else {
|
||
|
|
$qControl = $this->replication->replicaControl(
|
||
|
|
$_POST['sr_replica_action'],
|
||
|
|
$control,
|
||
|
|
DatabaseInterface::CONNECT_USER
|
||
|
|
);
|
||
|
|
|
||
|
|
$result = $qControl !== false && $qControl !== -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
public function handleRequestForReplicaSkipError(): bool
|
||
|
|
{
|
||
|
|
global $dbi;
|
||
|
|
|
||
|
|
$count = 1;
|
||
|
|
if (isset($_POST['sr_skip_errors_count'])) {
|
||
|
|
$count = $_POST['sr_skip_errors_count'] * 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
$qStop = $this->replication->replicaControl('STOP', null, DatabaseInterface::CONNECT_USER);
|
||
|
|
$qSkip = $dbi->tryQuery('SET GLOBAL SQL_SLAVE_SKIP_COUNTER = ' . $count . ';');
|
||
|
|
$qStart = $this->replication->replicaControl('START', null, DatabaseInterface::CONNECT_USER);
|
||
|
|
|
||
|
|
return $qStop !== false && $qStop !== -1 &&
|
||
|
|
$qSkip !== false &&
|
||
|
|
$qStart !== false && $qStart !== -1;
|
||
|
|
}
|
||
|
|
}
|