Made connecting to multiple hosts easier with new DSN generation

Author: jenssegers

README.md

@@ -36,7 +36,9 @@ This package will automatically check the database configuration in `app/config/
     'mongodb' => array(
         'host'     => 'localhost',
         'port'     => 27017,
-        'database' => 'database',
+        'username' => 'username',
+        'password' => 'password',
+        'database' => 'database'
     ),
 
 You can also specify the connection name in the model if you have multiple connections:
@@ -47,6 +49,17 @@ You can also specify the connection name in the model if you have multiple conne
 
     }
 
+You can connect to multiple servers or replica sets with the following configuration:
+
+    'mongodb' => array(
+        'host'     => array('server1', 'server2),
+        'port'     => 27017,
+        'username' => 'username',
+        'password' => 'password',
+        'database' => 'database',
+        'options'  => array('replicaSet' => 'replicaSetName')
+    ),
+
 Eloquent
 --------
 

src/Jenssegers/Mongodb/Connection.php

@@ -80,11 +80,21 @@ public function getCollection($name)
      *
      * @return  MongoDB
      */
-    public function getDb()
+    public function getMongoDB()
     {
         return $this->db;
     }
 
+    /**
+     * return MongoClient object
+     *
+     * @return MongoClient
+     */
+    public function getMongoClient()
+    {
+        return $this->connection;
+    }
+
     /**
      * Create a DSN string from a configuration.
      *
@@ -98,23 +108,23 @@ protected function getDsn(array $config)
         // need to establish the MongoClient and return them back for use.
         extract($config);
 
-        $dsn = "mongodb://";
+        // Treat host option as array of hosts
+        $hosts = is_array($config['host']) ? $config['host'] : array($config['host']);
 
-        if (isset($config['username']) and isset($config['password']))
+        foreach ($hosts as &$host)
         {
-            $dsn .= "{$username}:{$password}@";
+            if (isset($config['username']) and isset($config['password']))
+            {
+                $host = "{$username}:{$password}@{$host}";
+            }
+
+            if (isset($config['port']))
+            {
+                $host = "{$host}:{$port}";
+            }
         }
 
-        $dsn .= "{$host}";
-
-        if (isset($config['port']))
-        {
-            $dsn .= ":{$port}";
-        }
-
-        $dsn .= "/{$database}";
-
-        return $dsn;
+        return "mongodb://" . implode(',', $hosts) . "/{$database}";
     }
 
     /**

tests/ConnectionTest.php

@@ -28,7 +28,7 @@ public function testConnection()
 	public function testDb()
 	{
 		$connection = DB::connection('mongodb');
-		$this->assertInstanceOf('MongoDB', $connection->getDb());
+		$this->assertInstanceOf('MongoDB', $connection->getMongoDB());
 	}
 
 	public function testCollection()
@@ -49,4 +49,19 @@ public function testDynamic()
 		$this->assertTrue(is_array($dbs));
 	}
 
+	public function testMultipleConnections()
+	{
+		global $app;
+
+		# Add fake host
+		$db = $app['config']['database.connections']['mongodb'];
+		$db['host'] = array($db['host'], '1.2.3.4');
+
+		$connection = new Connection($db);
+		$mongoclient = $connection->getMongoClient();
+
+		$hosts = $mongoclient->getHosts();
+		$this->assertEquals(1, count($hosts));
+	}
+
 }