align interface

Author: ikwattro

src/Client.php

@@ -132,7 +132,7 @@ public function stack($tag = null, $connectionAlias = null)
      */
     public function runStack(StackInterface $stack)
     {
-        $connectionAlias = $stack instanceof Stack && $stack->hasWrites()
+        $connectionAlias = $stack->hasWrites()
             ? $this->connectionManager->getMasterConnection()->getAlias()
             : $stack->getConnectionAlias();
         $pipeline = $this->pipeline(null, null, $stack->getTag(), $connectionAlias);

src/StackInterface.php

@@ -33,6 +33,13 @@ public static function create($tag = null, $connectionAlias = null);
      */
     public function push($query, $parameters = null, $tag = null);
 
+    /**
+     * @param string     $query
+     * @param null|array $parameters
+     * @param null|array $tag
+     */
+    public function pushWrite($query, $parameters = null, $tag = null);
+
     /**
      * @param $query
      * @param array|null $parameters
@@ -69,4 +76,9 @@ public function getTag();
      * @return null|string
      */
     public function getConnectionAlias();
+
+    /**
+     * @return bool
+     */
+    public function hasWrites();
 }