Initiate Jetpack listening.

includes/listeners/class-jetpacklistener.php

@@ -0,0 +1,71 @@
+<?php
+/**
+ * Jetpack listener for DecaLog.
+ *
+ * Defines class for Jetpack listener.
+ *
+ * @package Listeners
+ * @author  Pierre Lannoy <https://pierre.lannoy.fr/>.
+ * @since   1.4.0
+ */
+
+namespace Decalog\Listener;
+
+/**
+ * Jetpack listener for DecaLog.
+ *
+ * Defines methods and properties for User Switching listener class.
+ *
+ * @package Listeners
+ * @author  Pierre Lannoy <https://pierre.lannoy.fr/>.
+ * @since   1.4.0
+ */
+class JetpackListener extends AbstractListener {
+
+	/**
+	 * Sets the listener properties.
+	 *
+	 * @since    1.0.0
+	 */
+	protected function init() {
+		$this->id      = 'jetpack';
+		$this->class   = 'plugin';
+		$this->product = 'Jetpack';
+		$this->name    = 'Jetpack';
+		if ( defined( 'JETPACK__VERSION' ) ) {
+			$this->version = JETPACK__VERSION;
+		} else {
+			$this->version = 'x';
+		}
+	}
+
+	/**
+	 * Verify if this listener is needed, mainly by verifying if the listen plugin/theme is loaded.
+	 *
+	 * @return  boolean     True if listener is needed, false otherwise.
+	 * @since    1.4.0
+	 */
+	protected function is_available() {
+		return class_exists( 'Jetpack' );
+	}
+
+	/**
+	 * "Launch" the listener.
+	 *
+	 * @return  boolean     True if listener was launched, false otherwise.
+	 * @since    1.4.0
+	 */
+	protected function launch() {
+		add_action( 'jetpack_log_entry', [ $this, 'jetpack_log_entry' ], 10, 1 );
+		return true;
+	}
+
+	/**
+	 * "jetpack_log_entry" event.
+	 *
+	 * @since    1.4.0
+	 */
+	public function jetpack_log_entry( $log_entry)  {
+		$this->logger->emergency( print_r($log_entry, true) );
+	}
+}

includes/listeners/class-listenerfactory.php

@@ -44,6 +44,7 @@ class ListenerFactory {
 		'.',
 		'index.php',
 		'class-abstractlistener.php',
+		'class-jetpacklistener.php',
 		'class-listenerfactory.php',
 	];