Merge pull request #24 from optimizely/aliabbasrizvi/curl_http_client

Adding cURL based event dispatcher

Author: aliabbasrizvi

src/Optimizely/Event/Dispatcher/CurlEventDispatcher.php

@@ -0,0 +1,45 @@
+<?php
+/**
+ * Copyright 2016, Optimizely
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+namespace Optimizely\Event\Dispatcher;
+
+use Exception;
+use Optimizely\Event\LogEvent;
+
+/**
+ * Class CurlEventDispatcher
+ *
+ * @package Optimizely\Event\Dispatcher
+ */
+class CurlEventDispatcher implements EventDispatcherInterface
+{
+    public function dispatchEvent(LogEvent $event)
+    {
+        $cmd = "curl";
+        $cmd.= " -X ".$event->getHttpVerb();
+        foreach($event->getHeaders() as $type => $value) {
+            $cmd.= " -H '".$type.": ".$value."'";
+        }
+        $cmd.= " -d '".json_encode($event->getParams())."'";
+        $cmd.= " '".$event->getUrl()."' > /dev/null 2>&1 &";
+        exec($cmd, $output, $exit_code);
+
+        if ($exit_code !== 0) {
+            throw new Exception('Curl command failed.');
+        }
+    }
+}