MAGETWO-58594: Static Assets deployment throws errors when redis is used for cache after PR 389

cache disabling for setup:static-content:deploy command

Author: AVoskoboinikov

app/code/Magento/Deploy/Console/Command/DeployStaticContentCommand.php

@@ -96,6 +96,7 @@ public function __construct(
         $this->objectManagerFactory = $objectManagerFactory;
         $this->validator = $validator;
         $this->objectManager = $objectManager;
+
         parent::__construct();
     }
 
@@ -415,7 +416,13 @@ protected function execute(InputInterface $input, OutputInterface $output)
             }
         }
 
-        return $deployManager->deploy();
+        try {
+            $this->disableCache();
+            return $deployManager->deploy();
+
+        } finally {
+            $this->enableCache();
+        }
     }
 
     /**
@@ -476,4 +483,22 @@ private function prepareDeployableEntities($filesUtil)
 
         return [$deployableLanguages, $deployableAreaThemeMap, $requestedThemes];
     }
+
+    private function disableCache()
+    {
+        $this->objectManager->configure([
+            'preferences' => [
+                \Magento\Framework\App\Cache::class => \Magento\Framework\App\Cache\Type\Dummy::class
+            ]
+        ]);
+    }
+
+    private function enableCache()
+    {
+        $this->objectManager->configure([
+            'preferences' => [
+                \Magento\Framework\App\Cache::class => \Magento\Framework\App\Cache::class
+            ]
+        ]);
+    }
 }

lib/internal/Magento/Framework/App/Cache/Type/Dummy.php

@@ -0,0 +1,69 @@
+<?php
+/**
+ * Copyright © 2016 Magento. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\Framework\App\Cache\Type;
+
+use \Magento\Framework\App\CacheInterface;
+
+class Dummy implements CacheInterface
+{
+    /**
+     * Required by CacheInterface
+     *
+     * @return Null
+     */
+    public function getFrontend()
+    {
+        return null;
+    }
+
+    /**
+     * Pretend to load data from cache by id
+     *
+     * @param  string $identifier
+     * @return null
+     */
+    public function load($identifier)
+    {
+        return null;
+    }
+
+    /**
+     * Pretend to save data
+     *
+     * @param string $data
+     * @param string $identifier
+     * @param array $tags
+     * @param int $lifeTime
+     * @return bool
+     */
+    public function save($data, $identifier, $tags = [], $lifeTime = null)
+    {
+        return false;
+    }
+
+    /**
+     * Pretend to remove cached data by identifier
+     *
+     * @param string $identifier
+     * @return bool
+     */
+    public function remove($identifier)
+    {
+        return true;
+    }
+
+    /**
+     * Pretend to clean cached data by specific tag
+     *
+     * @param array $tags
+     * @return bool
+     */
+    public function clean($tags = [])
+    {
+        return true;
+    }
+}