Added config for cache plugin

Author: Nyholm

DependencyInjection/Configuration.php

@@ -27,6 +27,7 @@ public function getConfigTreeBuilder()
         $rootNode = $treeBuilder->root('httplug');
 
         $this->configureClients($rootNode);
+        $this->configurePlugins($rootNode);
 
         $rootNode
             ->validate()
@@ -108,4 +109,32 @@ protected function configureClients(ArrayNodeDefinition $root)
                 ->end()
             ->end();
     }
+
+    /**
+     * @param ArrayNodeDefinition $root
+     */
+    protected function configurePlugins(ArrayNodeDefinition $root)
+    {
+        $root->children()
+            ->arrayNode('plugins')
+                ->addDefaultsIfNotSet()
+                ->children()
+                    ->arrayNode('cache')
+                    ->canBeEnabled()
+                    ->addDefaultsIfNotSet()
+                        ->children()
+                            ->scalarNode('cache_pool')->isRequired()->cannotBeEmpty()->end()
+                            ->scalarNode('stream_factory')->cannotBeEmpty()->defaultValue('httplug.stream_factory')->end()
+                            ->arrayNode('config')
+                                ->children()
+                                    ->scalarNode('default_ttl')->defaultNull()->end()
+                                    ->scalarNode('respect_cache_headers')->defaultTrue()->end()
+                                ->end()
+                            ->end()
+                        ->end()
+                    ->end() // End cache plugin
+                ->end()
+            ->end()
+        ->end();
+    }
 }

DependencyInjection/HttplugExtension.php

@@ -49,6 +49,7 @@ public function load(array $configs, ContainerBuilder $container)
         foreach ($config['main_alias'] as $type => $id) {
             $container->setAlias(sprintf('httplug.%s', $type), $id);
         }
+        $this->configurePlugins($container, $config['plugins']);
         $this->configureClients($container, $config);
     }
 
@@ -90,4 +91,16 @@ protected function configureClients(ContainerBuilder $container, array $config)
             $container->setAlias('httplug.client.default', 'httplug.client.'.$first);
         }
     }
+
+    protected function configurePlugins(ContainerBuilder $container, array $config)
+    {
+        if ($config['cache']['enabled']) {
+            $container->getDefinition('httplug.plugin.cache')
+                ->replaceArgument(0, new Reference($config['cache']['cache_pool']))
+                ->replaceArgument(1, new Reference($config['cache']['stream_factory']))
+                ->replaceArgument(2, $config['cache']['config']);
+        } else {
+            $container->removeDefinition('httplug.plugin.cache');
+        }
+    }
 }

Resources/config/plugins.xml

@@ -4,6 +4,11 @@
            xsi:schemaLocation="http://symfony.com/schema/dic/services http://symfony.com/schema/dic/services/services-1.0.xsd">
 
     <services>
+        <service id="httplug.plugin.cache" class="Http\Client\Plugin\CachePlugin" public="false">
+            <argument />
+            <argument />
+            <argument />
+        </service>
         <service id="httplug.plugin.content_length" class="Http\Client\Plugin\ContentLengthPlugin" public="false" />
         <service id="httplug.plugin.decoder" class="Http\Client\Plugin\DecoderPlugin" public="false" />
         <service id="httplug.plugin.error" class="Http\Client\Plugin\ErrorPlugin" public="false" />