Add Serialization option (#411)

* Add Serialization option

Serialization option is necessary for setting the type of serialization
to use for redis.

This is simply a new commit with all the code taken from PR#199 using
the latest code of SncRedisBundle on branch 2.1

* Minor code style update. Remove HHVM support

* Switch to using Redis Class Constants instead of hard-coded values

* Fix IGBINARY Dependency

* Remove ?? to support php5

DependencyInjection/Configuration/Configuration.php

@@ -114,6 +114,7 @@ private function addClientsSection(ArrayNodeDefinition $rootNode)
                                     ->scalarNode('read_write_timeout')->defaultNull()->end()
                                     ->booleanNode('iterable_multibulk')->defaultFalse()->end()
                                     ->booleanNode('throw_errors')->defaultTrue()->end()
+                                    ->scalarNode('serialization')->defaultValue('default')->end()
                                     ->scalarNode('profile')->defaultValue('default')
                                     ->end()
                                     ->scalarNode('cluster')->defaultNull()->end()

DependencyInjection/SncRedisExtension.php

@@ -297,6 +297,12 @@ protected function loadPhpredisClient(array $client, ContainerBuilder $container
         if (null !== $dsn->getDatabase()) {
             $phpredisDef->addMethodCall('select', array($dsn->getDatabase()));
         }
+        if ($client['options']['serialization']) {
+            $phpredisDef->addMethodCall(
+                'setOption',
+                array(\Redis::OPT_SERIALIZER, $this->loadSerializationType($client['options']['serialization']))
+            );
+        }
         $container->setDefinition($phpredisId, $phpredisDef);
 
         $container->setAlias(sprintf('snc_redis.%s', $client['alias']), $phpredisId);
@@ -427,7 +433,41 @@ protected function loadSwiftMailer(array $config, ContainerBuilder $container)
     }
 
     /**
-     * Loads the profiler storage configuration.
+     * Load the correct serializer for Redis
+     *
+     * @param string $type
+     *
+     * @return string
+     * @throws InvalidConfigurationException
+     */
+    public function loadSerializationType($type)
+    {
+        $types = array(
+            'none' => \Redis::SERIALIZER_NONE,
+            'php' => \Redis::SERIALIZER_PHP
+        );
+
+        if (defined('Redis::SERIALIZER_IGBINARY')) {
+            $types['igbinary'] = \Redis::SERIALIZER_IGBINARY;
+        }
+
+        // allow user to pass in default serialization in which case we should automatically decide for them
+        if ('default' == $type) {
+            return isset($types['igbinary']) ? $types['igbinary'] : $types['php'];
+        } elseif (array_key_exists($type, $types)) {
+            return $types[$type];
+        }
+
+        throw new InvalidConfigurationException(
+            sprintf(
+                '%s in not a valid serializer. Valid serializers: %s',
+                $type,
+                implode(", ", array_keys($types))
+            )
+        );
+    }
+
+     /* Loads the profiler storage configuration.
      *
      * @param array            $config    A configuration array
      * @param ContainerBuilder $container A ContainerBuilder instance

Resources/config/schema/redis-1.0.xsd

@@ -56,12 +56,22 @@
         <xsd:attribute name="read-write-timeout" type="xsd:int" />
         <xsd:attribute name="iterable-multibulk" type="xsd:boolean" />
         <xsd:attribute name="throw-errors" type="xsd:boolean" />
+        <xsd:attribute name="serialization" type="phpredis-serialization-type" />
         <xsd:attribute name="profile" type="client-profile" />
         <xsd:attribute name="cluster" type="xsd:string" />
         <xsd:attribute name="prefix" type="xsd:string" />
         <xsd:attribute name="replication" type="xsd:boolean" />
     </xsd:complexType>
 
+    <xsd:simpleType name="phpredis-serialization-type">
+        <xsd:restriction base="xsd:string">
+            <xsd:enumeration value="default" />
+            <xsd:enumeration value="none" />
+            <xsd:enumeration value="php" />
+            <xsd:enumeration value="igbinary" />
+        </xsd:restriction>
+    </xsd:simpleType>
+
     <xsd:simpleType name="client-profile">
         <xsd:restriction base="xsd:string">
             <xsd:enumeration value="1.2" />

Tests/DependencyInjection/SncRedisExtensionTest.php

@@ -308,6 +308,37 @@ public function testClientReplicationOption()
         $this->assertEquals(array('snc_redis.default' => array(array('alias' => 'default'))), $container->findTaggedServiceIds('snc_redis.client'));
     }
 
+    /**
+     * Test valid config of the serialization option
+     */
+    public function testClientSerializationOption()
+    {
+         $extension = new SncRedisExtension();
+         $config = $this->parseYaml($this->getSerializationYamlConfig());
+         $extension->load(array($config), $container = $this->getContainer());
+         $options = $container->getDefinition('snc_redis.client.default_options')->getArgument(0);
+         $parameters = $container->getDefinition('snc_redis.default')->getArgument(0);
+         $masterParameters = $container->getDefinition((string) $parameters[0])->getArgument(0);
+         $this->assertSame($options['serialization'], $masterParameters['serialization']);
+    }
+
+    /**
+     * Test validity of serialization type
+     */
+    public function testLoadSerializationType()
+    {
+        $extension = new SncRedisExtension();
+        $config = $this->parseYaml($this->getSerializationYamlConfig());
+        $extension->load(array($config), $container = $this->getContainer());
+        $options = $container->getDefinition('snc_redis.client.default_options')->getArgument(0);
+        $serializationType = $extension->loadSerializationType($options['serialization']);
+        $this->assertTrue(is_integer($serializationType));
+
+        $defaultType = defined('Redis::SERIALIZER_IGBINARY') ? 2 : 1;
+
+        $this->assertEquals($defaultType, $serializationType);
+    }
+
     /**
      * Test valid config of the sentinel replication option
      */
@@ -361,6 +392,21 @@ private function parseYaml($yaml)
         return $parser->parse($yaml);
     }
 
+    private function getSerializationYamlConfig()
+     {
+         return <<<'EOF'
+clients:
+ default:
+     type: predis
+     alias: default
+     dsn:
+         - redis://localhost?alias=master
+         - redis://otherhost
+     options:
+         serialization: "default"
+EOF;
+    }
+
     private function getMinimalYamlConfig()
     {
         return <<<'EOF'