2 files changed, 131 insertions, 0 deletions
diff --git a/includes/libs/eventrelayer/EventRelayer.php b/includes/libs/eventrelayer/EventRelayer.php
new file mode 100644
index 00000000..f95ba3f0
--- /dev/null
+++ b/includes/libs/eventrelayer/EventRelayer.php
@@ -0,0 +1,65 @@
+<?php
+/**
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @author Aaron Schulz
+ */
+
+/**
+ * Base class for reliable event relays
+ */
+abstract class EventRelayer {
+	/**
+	 * @param array $params
+	 */
+	public function __construct( array $params ) {
+	}
+
+	/**
+	 * @param string $channel
+	 * @param array $event Event data map
+	 * @return bool Success
+	 */
+	final public function notify( $channel, $event ) {
+		return $this->doNotify( $channel, array( $event ) );
+	}
+
+	/**
+	 * @param string $channel
+	 * @param array $events List of event data maps
+	 * @return bool Success
+	 */
+	final public function notifyMulti( $channel, $events ) {
+		return $this->doNotify( $channel, $events );
+	}
+
+	/**
+	 * @param string $channel
+	 * @param array $events List of event data maps
+	 * @return bool Success
+	 */
+	abstract protected function doNotify( $channel, array $events );
+}
+
+/**
+ * No-op class for publishing messages into a PubSub system
+ */
+class EventRelayerNull extends EventRelayer {
+	public function doNotify( $channel, array $events ) {
+		return true;
+	}
+}
diff --git a/includes/libs/eventrelayer/EventRelayerMCRD.php b/includes/libs/eventrelayer/EventRelayerMCRD.php
new file mode 100644
index 00000000..1e8b2a40
--- /dev/null
+++ b/includes/libs/eventrelayer/EventRelayerMCRD.php
@@ -0,0 +1,66 @@
+<?php
+/**
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @author Aaron Schulz
+ */
+
+/**
+ * Relayed that uses the mcrelaypushd server
+ */
+class EventRelayerMCRD extends EventRelayer {
+	/** @var MultiHttpClient */
+	protected $http;
+	/** @var string */
+	protected $baseUrl;
+
+	/**
+	 * Additional params include 'mcrdConfig', which is a map of:
+	 *   - url : The base URL of the service (without paths)
+	 * @param array $params
+	 */
+	public function __construct( array $params ) {
+		parent::__construct( $params );
+
+		$this->baseUrl = $params['mcrdConfig']['url'];
+
+		$httpConfig = isset( $params['httpConfig'] ) ? $params['httpConfig'] : array();
+		if ( !isset( $httpConfig['connTimeout'] ) ) {
+			$httpConfig['connTimeout'] = 1;
+		}
+		if ( !isset( $httpConfig['reqTimeout'] ) ) {
+			$httpConfig['reqTimeout'] = .25;
+		}
+
+		$this->http = new MultiHttpClient( $httpConfig );
+	}
+
+	protected function doNotify( $channel, array $events ) {
+		if ( !count( $events ) ) {
+			return true;
+		}
+
+		$response = $this->http->run( array(
+			'url'     => "{$this->baseUrl}/relayer/api/v1.0/" . rawurlencode( $channel ),
+			'method'  => 'POST',
+			'body'    => json_encode( array( 'events' => $events ) ),
+			'headers' => array( 'content-type' => 'application/json' )
+		) );
+
+		return $response['code'] == 201;
+	}
+}