Add three helper abstract Rules matching the control messages for Scheduler start, shutdown and heartbeat

Author: lucasnetau

src/Rule/OnHeartbeat.php

@@ -0,0 +1,23 @@
+<?php declare(strict_types=1);
+
+/*
+ * This file is part of the PHP Event Correlation package.
+ *
+ * (c) James Lucas <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace EdgeTelemetrics\EventCorrelation\Rule;
+
+use EdgeTelemetrics\EventCorrelation\Scheduler;
+
+/**
+ * Class OnStartup
+ * @package EdgeTelemetrics\EventCorrelation\Rule
+ */
+abstract class OnHeartbeat extends MatchSingle
+{
+    const EVENTS = [[Scheduler::CONTROL_MSG_HEARTBEAT]];
+}

src/Rule/OnShutdown.php

@@ -0,0 +1,21 @@
+<?php declare(strict_types=1);
+
+/*
+ * This file is part of the PHP Event Correlation package.
+ *
+ * (c) James Lucas <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace EdgeTelemetrics\EventCorrelation\Rule;
+
+/**
+ * Class OnShutdown
+ * @package EdgeTelemetrics\EventCorrelation\Rule
+ */
+abstract class OnShutdown extends Cron
+{
+    const CRON_SCHEDULE = self::ON_SHUTDOWN;
+}

src/Rule/OnStartup.php

@@ -0,0 +1,21 @@
+<?php declare(strict_types=1);
+
+/*
+ * This file is part of the PHP Event Correlation package.
+ *
+ * (c) James Lucas <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace EdgeTelemetrics\EventCorrelation\Rule;
+
+/**
+ * Class OnStartup
+ * @package EdgeTelemetrics\EventCorrelation\Rule
+ */
+abstract class OnStartup extends Cron
+{
+    const CRON_SCHEDULE = self::ON_INITIALISATION;
+}