Add cron as a global service

migrations/container/20190110064350_service-command_add_cron_global_service.php

@@ -0,0 +1,108 @@
+<?php
+
+namespace EE\Migration;
+
+use EE;
+use EE\Migration\Base;
+use http\Exception;
+
+class AddCronGlobalService extends Base {
+
+	/** @var RevertableStepProcessor $rsp Keeps track of migration state. Reverts on error */
+	private static $rsp;
+
+	public function __construct() {
+
+		parent::__construct();
+		if ( $this->is_first_execution ) {
+			$this->skip_this_migration = true;
+		}
+	}
+
+	/**
+	 * Execute global service container name update.
+	 *
+	 * @throws EE\ExitException
+	 */
+	public function up() {
+
+		if ( $this->skip_this_migration ) {
+			EE::debug( 'Skipping add-cron-global-service migration as it is not needed.' );
+
+			return;
+		}
+
+		EE::debug( 'Starting add-cron-global-service' );
+		self::$rsp = new EE\RevertableStepProcessor();
+
+		$global_compose_file_path        = EE_ROOT_DIR . '/services/docker-compose.yml';
+		$global_compose_file_backup_path = EE_BACKUP_DIR . '/services/docker-compose.yml.backup';
+
+		$old_container = 'running' === \EE_DOCKER::container_status( 'ee-cron-scheduler' );
+
+		/**
+		 * Backup old docker-compose file.
+		 */
+		self::$rsp->add_step(
+			'backup-global-docker-compose-file',
+			'EE\Migration\SiteContainers::backup_restore',
+			'EE\Migration\SiteContainers::backup_restore',
+			[ $global_compose_file_path, $global_compose_file_backup_path ],
+			[ $global_compose_file_backup_path, $global_compose_file_path ]
+		);
+
+		/**
+		 * Generate new docker-compose file.
+		 */
+		self::$rsp->add_step(
+			'generate-global-docker-compose-file',
+			'EE\Service\Utils\generate_global_docker_compose_yml',
+			null,
+			[ new \Symfony\Component\Filesystem\Filesystem() ],
+			null
+		);
+
+		if ( $old_container ) {
+			/**
+			 * Start global-cron service container.
+			 */
+			self::$rsp->add_step(
+				'enable-global-cron-service',
+				'EE\Migration\GlobalContainers::global_service_up',
+				null,
+				[ EE_CRON_SERVICE ],
+				[]
+			);
+
+			/**
+			 * Remove ee-cron-scheduler container.
+			 */
+			self::$rsp->add_step(
+				'remove-ee-cron-scheduler-container',
+				'EE\Migration\AddCronGlobalService::remove_old_cron_container',
+				null,
+				[],
+				[]
+			);
+		}
+
+		if ( ! self::$rsp->execute() ) {
+			throw new \Exception( 'Unable run add-cron-global-service migrations.' );
+		}
+	}
+
+	/**
+	 * No need for down.
+	 *
+	 * @throws EE\ExitException
+	 */
+	public function down() {
+	}
+
+	public static function remove_old_cron_container() {
+
+		if ( ! EE::exec( 'docker rm -f ee-cron-scheduler' ) ) {
+			throw new \Exception( 'Unable to remove ee-cron-scheduler container' );
+		}
+	}
+}

src/helper/service-utils.php

@@ -279,6 +279,15 @@ function generate_global_docker_compose_yml( Filesystem $fs ) {
 				'global-backend-network',
 			],
 		],
+		[
+			'name'    => EE_CRON_SERVICE,
+			'image'   => 'easyengine/cron:' . $img_versions['easyengine/cron'],
+			'restart' => 'always',
+			'volumes' => [
+				'/opt/easyengine/services/cron:/etc/ofelia:ro',
+				'/var/run/docker.sock:/var/run/docker.sock:ro',
+			],
+		],
 	];
 
 	Option::set( GLOBAL_DB, $password );