fix(migration): purge global db binary logs

migrations/container/20260708120000_service-command_disable_global_db_binlogs.php

@@ -0,0 +1,240 @@
+<?php
+
+namespace EE\Migration;
+
+use EE;
+use EE\Migration\Base;
+
+class DisableGlobalDbBinlogs extends Base {
+
+	public function __construct() {
+
+		parent::__construct();
+		if ( $this->is_first_execution || ! $this->fs->exists( EE_SERVICE_DIR . '/docker-compose.yml' ) ) {
+			$this->skip_this_migration = true;
+		}
+	}
+
+	/**
+	 * Disable global DB binary logs and clean up existing binlog files.
+	 *
+	 * @throws EE\ExitException
+	 * @throws \Exception
+	 */
+	public function up() {
+
+		if ( $this->skip_this_migration ) {
+			EE::debug( 'Skipping disable-global-db-binlogs migration as it is not needed.' );
+
+			return;
+		}
+
+		EE::debug( 'Starting disable-global-db-binlogs migration.' );
+
+		$global_db_status   = \EE_DOCKER::container_status( GLOBAL_DB_CONTAINER );
+		$global_db_running  = 'running' === $global_db_status;
+		$use_default_binlog = $this->uses_default_binlog_path( $global_db_running );
+		$restart_global_db  = $global_db_running || $this->global_db_restart_pending();
+
+		if ( $global_db_running && $use_default_binlog ) {
+			$this->reset_master();
+			$this->mark_global_db_restart_pending();
+		}
+
+		if ( $use_default_binlog ) {
+			$this->disable_binlog_config();
+
+			if ( false !== $global_db_status ) {
+				$this->copy_config_to_container();
+			}
+
+		}
+
+		if ( $restart_global_db ) {
+			$this->restart_global_db();
+			$this->clear_global_db_restart_pending();
+		}
+
+		if ( $use_default_binlog || $this->has_default_binlog_files() ) {
+			$this->delete_binlog_files();
+		}
+	}
+
+	public function down() {
+	}
+
+	private function reset_master() {
+
+		$command = sprintf(
+			'docker exec %s sh -c %s',
+			GLOBAL_DB_CONTAINER,
+			escapeshellarg( 'mysql -uroot -p"$MYSQL_ROOT_PASSWORD" -e "RESET MASTER"' )
+		);
+
+		if ( ! EE::exec( $command ) ) {
+			EE::warning( 'Unable to reset MariaDB binary logs before disabling them. Continuing with config update and file cleanup.' );
+		}
+	}
+
+	private function disable_binlog_config() {
+
+		$ee_conf_path = EE_SERVICE_DIR . '/mariadb/conf/conf.d/ee.cnf';
+		$contents     = "[mysqld]\n";
+
+		$this->fs->mkdir( dirname( $ee_conf_path ) );
+
+		if ( $this->fs->exists( $ee_conf_path ) ) {
+			$contents = file_get_contents( $ee_conf_path );
+		}
+		if ( false === $contents ) {
+			$contents = "[mysqld]\n";
+		}
+
+		if ( 1 === preg_match( '/^\s*log[_-]bin\s*=\s*\/var\/log\/mysql\/mariadb-bin\s*$/mi', $contents ) ) {
+			$contents = preg_replace(
+				'/^\s*log[_-]bin\s*=\s*\/var\/log\/mysql\/mariadb-bin\s*\R?/mi',
+				'',
+				$contents
+			);
+			$contents = preg_replace(
+				'/^\s*log[_-]bin[_-]index\s*=\s*\/var\/log\/mysql\/mariadb-bin\.index\s*\R?/mi',
+				'',
+				$contents
+			);
+			$contents = preg_replace( '/^\s*binlog[_-]format\s*=\s*statement\s*\R?/mi', '', $contents );
+			$contents = preg_replace( '/^\s*#\s*not fab for performance, but safer\R?/mi', '', $contents );
+			$contents = preg_replace( '/^\s*#?\s*sync[_-]binlog\s*=\s*1\s*\R?/mi', '', $contents );
+			$contents = preg_replace( '/^\s*expire[_-]logs[_-]days\s*=\s*10\s*\R?/mi', '', $contents );
+			$contents = preg_replace( '/^\s*max[_-]binlog[_-]size\s*=\s*100M\s*\R?/mi', '', $contents );
+		}
+
+		if ( false === strpos( $contents, '[mysqld]' ) ) {
+			$contents = "[mysqld]\n" . $contents;
+		}
+
+		$this->fs->dumpFile( $ee_conf_path, rtrim( $contents ) . "\n" );
+	}
+
+	private function uses_default_binlog_path( $global_db_running ) {
+
+		if ( $global_db_running ) {
+			$command = sprintf(
+				'docker exec %s sh -c %s',
+				GLOBAL_DB_CONTAINER,
+				escapeshellarg( 'mysql -N -B -uroot -p"$MYSQL_ROOT_PASSWORD" -e "SHOW VARIABLES LIKE \'log_bin_basename\'"' )
+			);
+			$launch  = EE::launch( $command );
+
+			if ( 0 === $launch->return_code ) {
+				$binlog_variable = preg_split( '/\s+/', trim( $launch->stdout ) );
+				$binlog_basename = end( $binlog_variable );
+
+				return '/var/log/mysql/mariadb-bin' === $binlog_basename;
+			}
+		}
+
+		$ee_conf_path = EE_SERVICE_DIR . '/mariadb/conf/conf.d/ee.cnf';
+
+		if ( ! $this->fs->exists( $ee_conf_path ) ) {
+			// No persisted override means the existing container/image likely has EE's stock binlog config.
+			return true;
+		}
+
+		$contents = file_get_contents( $ee_conf_path );
+
+		return false !== $contents && 1 === preg_match( '/^\s*log[_-]bin\s*=\s*\/var\/log\/mysql\/mariadb-bin\s*$/mi', $contents );
+	}
+
+	private function has_default_binlog_files() {
+
+		return ! empty( $this->get_default_binlog_files() );
+	}
+
+	private function global_db_restart_pending() {
+
+		return $this->fs->exists( $this->get_restart_marker_path() );
+	}
+
+	private function mark_global_db_restart_pending() {
+
+		$restart_marker = $this->get_restart_marker_path();
+
+		$this->fs->mkdir( dirname( $restart_marker ) );
+		$this->fs->dumpFile( $restart_marker, '1' );
+	}
+
+	private function clear_global_db_restart_pending() {
+
+		$restart_marker = $this->get_restart_marker_path();
+
+		if ( $this->fs->exists( $restart_marker ) ) {
+			$this->fs->remove( $restart_marker );
+		}
+	}
+
+	private function get_restart_marker_path() {
+
+		return EE_BACKUP_DIR . '/mariadb/disable-binlogs-global-db-restart-pending';
+	}
+
+	private function restart_global_db() {
+
+		chdir( EE_SERVICE_DIR );
+		$global_db_status = \EE_DOCKER::container_status( GLOBAL_DB_CONTAINER );
+		$command          = 'running' === $global_db_status ? ' restart ' : ' up -d ';
+
+		if ( ! EE::exec( \EE_DOCKER::docker_compose_with_custom() . $command . GLOBAL_DB ) ) {
+			throw new \Exception( 'Unable to restart global-db after disabling MariaDB binary logs.' );
+		}
+	}
+
+	private function copy_config_to_container() {
+
+		$ee_conf_path = EE_SERVICE_DIR . '/mariadb/conf/conf.d/ee.cnf';
+		$command      = sprintf(
+			'docker cp %s %s:/etc/mysql/conf.d/ee.cnf',
+			escapeshellarg( $ee_conf_path ),
+			GLOBAL_DB_CONTAINER
+		);
+
+		if ( EE::exec( $command ) ) {
+			return;
+		}
+
+		if ( IS_DARWIN ) {
+			throw new \Exception( 'Unable to copy updated MariaDB config into global-db container.' );
+		} else {
+			EE::warning( 'Unable to copy updated MariaDB config into global-db container. Continuing with host config update.' );
+		}
+	}
+
+	private function delete_binlog_files() {
+
+		$binlog_files = $this->get_default_binlog_files();
+
+		if ( empty( $binlog_files ) ) {
+			return;
+		}
+
+		$this->fs->remove( array_filter( $binlog_files, 'is_file' ) );
+	}
+
+	private function get_default_binlog_files() {
+
+		$log_dir = EE_SERVICE_DIR . '/mariadb/logs';
+
+		if ( ! $this->fs->exists( $log_dir ) ) {
+			return [];
+		}
+
+		$binlog_files = glob( $log_dir . '/mariadb-bin.*' );
+
+		if ( false === $binlog_files ) {
+			return [];
+		}
+
+		return array_filter( $binlog_files, function ( $path ) {
+			return 1 === preg_match( '/^mariadb-bin\.(index|[0-9]+)$/', basename( $path ) );
+		} );
+	}
+}