Update SniffingConnectionPool to use 1.0 endpoints

Also adds an integration test

src/Elasticsearch/ConnectionPool/SniffingConnectionPool.php

@@ -113,7 +113,9 @@ private function sniffConnection(AbstractConnection $connection)
             return false;
         }
 
-        $nodes = $this->parseClusterState($connection->getTransportSchema(), $response);
+        // TODO wire in the serializer?
+        $nodeInfo = json_decode($response['text'], true);
+        $nodes = $this->parseClusterState($connection->getTransportSchema(), $nodeInfo);
 
         if (count($nodes) === 0) {
             return false;

src/Elasticsearch/Connections/AbstractConnection.php

@@ -226,7 +226,7 @@ public function ping()
     public function sniff()
     {
         $options = array('timeout' => $this->pingTimeout);
-        return $this->performRequest('GET', '/_cluster/nodes', null, null, $options);
+        return $this->performRequest('GET', '/_nodes/_all/clear', null, null, $options);
 
     }
 

tests/Elasticsearch/Tests/ConnectionPool/SniffingConnectionPoolIntegrationTest.php

@@ -0,0 +1,25 @@
+<?php
+use Elasticsearch\Common\Exceptions\NoNodesAvailableException;
+use Elasticsearch\ConnectionPool\SniffingConnectionPool;
+
+/**
+ * Class SniffingConnectionPoolIntegrationTest
+ *
+ * @category   Tests
+ * @package    Elasticsearch
+ * @subpackage Tests/SniffingConnectionPoolTest
+ * @author     Zachary Tong <[email protected]>
+ * @license    http://www.apache.org/licenses/LICENSE-2.0 Apache2
+ * @link       http://elasticsearch.org
+ */
+class SniffingConnectionPoolIntegrationTest extends \PHPUnit_Framework_TestCase
+{
+    public function testSniff() {
+        $params['connectionPoolClass'] = '\Elasticsearch\ConnectionPool\SniffingConnectionPool';
+        $params['connectionPoolParams']['sniffingInterval'] = -10;
+        $client = new \Elasticsearch\Client($params);
+
+        $client->ping();
+
+    }
+}