Configurable retry send e-mails.

DependencyInjection/Configuration.php

@@ -0,0 +1,22 @@
+<?php
+namespace Vanio\MailingBundle\DependencyInjection;
+
+use Symfony\Component\Config\Definition\Builder\TreeBuilder;
+use Symfony\Component\Config\Definition\ConfigurationInterface;
+
+class Configuration implements ConfigurationInterface
+{
+    public function getConfigTreeBuilder(): TreeBuilder
+    {
+        $treeBuilder = new TreeBuilder;
+        $treeBuilder->root('vanio_mailing')
+            ->children()
+                ->arrayNode('send_retry')
+                    ->prototype('scalar')->end()
+                    ->treatNullLike([])
+                ->end()
+            ->end();
+
+        return $treeBuilder;
+    }
+}

DependencyInjection/VanioMailingExtension.php

@@ -16,6 +16,13 @@ class VanioMailingExtension extends Extension
      */
     public function load(array $configs, ContainerBuilder $container)
     {
-        (new XmlFileLoader($container, new FileLocator(__DIR__ . '/../Resources/config')))->load('services.xml');
+        $config = $this->processConfiguration(new Configuration, $configs);
+        $loader = new XmlFileLoader($container, new FileLocator(sprintf('%s/../Resources/config', __DIR__)));
+        $loader->load('services.xml');
+        $container->setParameter('vanio_mailing', $config);
+
+        foreach ($config as $key => $value) {
+            $container->setParameter("vanio_mailing.$key", $value);
+        }
     }
 }

Resources/config/services.xml

@@ -27,6 +27,7 @@
         <service id="vanio_mailing.mailer" class="%vanio_mailing.mailer.class%" public="true">
             <argument type="service" id="vanio_mailing.templating.engine_adapter" />
             <argument type="service" id="vanio_mailing.mailer_adapter" />
+            <argument>%vanio_mailing.send_retry%</argument>
         </service>
 
         <service id="%vanio_mailing.mailer.class%" alias="vanio_mailing.mailer"/>