Allow to use multiply DD clients with DSN config

README.md

@@ -39,8 +39,35 @@ return [
 
 ```
 okvpn_datadog:
-    profiling: true
-    namespace: app # You app namespace for custome metric app.*, see https://docs.datadoghq.com/developers/metrics/#naming-metrics
+    clients:
+        default: 'datadog://127.0.0.1/namespase'
+
+        ## More clients
+        i2pd_client: 'datadog://10.10.1.1:8125/app?tags=tg1,tg2'
+        'null': null://null
+        mock: mock://mock
+        dns: '%env(DD_CLIENT)%'
+```
+
+Where env var looks like:
+```
+DD_CLIENT=datadog://127.0.0.1:8125/app1?tags=tg1,tg2
+```
+
+Access to client via DIC:
+
+```php
+class FeedController extends Controller
+{
+    // Inject via arg for Symfony 4+
+    #[Route(path: '/', name: 'feeds')]
+    public function feedsAction(DogStatsInterface $dogStats, DogStatsInterface $i2pdClient): Response
+    {
+        $dogStats->decrement('feed');
+
+        return $this->render('feed/feeds.html.twig');
+    }
+}
 ```
 
 ## Custom metrics that provided by OkvpnDatadogBundle
@@ -59,15 +86,7 @@ Where `app` metrics namespace.
 
 ## Configuration
 
-And create config `config/packages/datadog.yml` with 
-
-```
-okvpn_datadog:
-    namespace: app
-    port: 8125  
-```
-
-A more complex setup look like this `config.yml`:
+A more complex setup look like this  `config/packages/ddog.yml`:
 
 ```
 

src/Client/DatadogDns.php

@@ -4,10 +4,106 @@
 
 namespace Okvpn\Bundle\DatadogBundle\Client;
 
-class DatadogDns
+final class DatadogDns
 {
-    public static function parser(string $dsn): array
+    private string $originalDsn;
+    private string $scheme;
+    private string $host;
+    private int $port;
+    private string $namespace;
+    private array $tags = [];
+
+    public function __construct(string $dsn)
+    {
+        $this->parser($dsn);
+    }
+
+    public static function fromString(string $dsn): self
+    {
+        return new DatadogDns($dsn);
+    }
+
+    private function parser(string $dsn): void
+    {
+        $this->originalDsn = $dsn;
+
+        if (false === $dsn = parse_url($dsn)) {
+            throw new \InvalidArgumentException('The datadog DSN is invalid.');
+        }
+
+        if (!isset($dsn['scheme'])) {
+            throw new \InvalidArgumentException('The datadog DSN must contain a scheme.');
+        }
+
+        $this->scheme = $dsn['scheme'];
+        $this->host = $dsn['host'] ?? '127.0.0.1';
+        $this->port = $dsn['port'] ?? 8125;
+        $this->namespace = str_replace('/', '', $dsn['path'] ?? 'app');
+
+        if (isset($dsn['query'])) {
+            parse_str($dsn['query'], $query);
+            if (isset($query['tags'])) {
+                $this->tags = explode(',', $query['tags']);
+            }
+        }
+    }
+
+    /**
+     * @return string
+     */
+    public function getOriginalDsn(): string
     {
+        return $this->originalDsn;
+    }
 
+    /**
+     * @return string
+     */
+    public function getScheme(): string
+    {
+        return $this->scheme;
+    }
+
+    /**
+     * @return string
+     */
+    public function getHost(): string
+    {
+        return $this->host;
+    }
+
+    /**
+     * @return int
+     */
+    public function getPort(): int
+    {
+        return $this->port;
+    }
+
+    /**
+     * @return string
+     */
+    public function getNamespace(): string
+    {
+        return $this->namespace;
+    }
+
+    /**
+     * @return array
+     */
+    public function getTags(): array
+    {
+        return $this->tags;
+    }
+
+    public function toArray(): array
+    {
+        return [
+            'scheme' => $this->getScheme(),
+            'namespace' => $this->getNamespace(),
+            'tags' => $this->getTags(),
+            'host' => $this->getHost(),
+            'port' => $this->getPort(),
+        ];
     }
 }

src/Client/DatadogFactory.php

@@ -6,10 +6,32 @@
 
 class DatadogFactory implements DatadogFactoryInterface
 {
+    protected static $clientFactories = [
+        'null' => NullDatadogClient::class,
+        'mock' => MockClient::class,
+        'datadog' => DatadogClient::class,
+    ];
+
     /**
      * {@inheritdoc}
      */
     public function createClient(array $options): DogStatsInterface
     {
+        if (isset($options['dsn'])) {
+            $dsn = DatadogDns::fromString($options['dsn']);
+            $options = $dsn->toArray() + $options;
+        }
+
+        $scheme = $options['scheme'] ?? 'datadog';
+        if (!static::$clientFactories[$scheme]) {
+            throw new \InvalidArgumentException('The datadog DSN scheme "%s" does not exists. Allowed "%s"', $scheme, implode(",", static::$clientFactories));
+        }
+
+        return new static::$clientFactories[$scheme]($options);
+    }
+
+    public static function setClientFactory(string $alias, string $className): void
+    {
+        static::$clientFactories[$alias] = $className;
     }
 }

src/DependencyInjection/CompilerPass/SqlLoggerPass.php

@@ -7,7 +7,6 @@
 use Symfony\Component\DependencyInjection\ChildDefinition;
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
-use Symfony\Component\DependencyInjection\DefinitionDecorator;
 use Symfony\Component\DependencyInjection\Reference;
 
 class SqlLoggerPass implements CompilerPassInterface
@@ -34,7 +33,7 @@ public function process(ContainerBuilder $container): void
                 continue;
             }
             $loggerId = 'okvpn_datadog.sql_logger.' . $name;
-            $container->setDefinition($loggerId, class_exists(ChildDefinition::class) ? new ChildDefinition('okvpn_datadog.logger.sql') : new DefinitionDecorator('okvpn_datadog.logger.sql'));
+            $container->setDefinition($loggerId, new ChildDefinition('okvpn_datadog.logger.sql'));
             $configuration = $container->getDefinition($configuration);
             if ($configuration->hasMethodCall('setSQLLogger')) {
                 $chainLoggerId = 'doctrine.dbal.logger.chain.' . $name;

src/DependencyInjection/Configuration.php

@@ -4,6 +4,7 @@
 
 namespace Okvpn\Bundle\DatadogBundle\DependencyInjection;
 
+use Symfony\Component\Config\Definition\Builder\ArrayNodeDefinition;
 use Symfony\Component\Config\Definition\Builder\TreeBuilder;
 use Symfony\Component\Config\Definition\ConfigurationInterface;
 
@@ -74,6 +75,37 @@ public function getConfigTreeBuilder(): TreeBuilder
                 ->defaultFalse()
             ->end();
 
+        $this->addClientsSection($rootNode);
+
         return $treeBuilder;
     }
+
+    private function addClientsSection(ArrayNodeDefinition $rootNode): void
+    {
+        $rootNode->children()
+            ->arrayNode('clients')
+            ->useAttributeAsKey('alias', false)
+            ->beforeNormalization()
+                ->always()
+                ->then(static function ($v) {
+                    if (is_iterable($v)) {
+                        foreach ($v as $name => $client) {
+                            if (is_string($client)) {
+                                $client = ['dsn' => $client];
+                            }
+                            $client['alias'] = $name;
+                            $v[$name] = $client;
+                        }
+                    }
+                    return $v;
+                })
+            ->end()
+            ->arrayPrototype()
+                ->children()
+                    ->scalarNode('alias')->isRequired()->end()
+                    ->scalarNode('dsn')->isRequired()->end()
+                ->end()
+            ->end()
+            ->end();
+    }
 }

src/DependencyInjection/OkvpnDatadogExtension.php

@@ -4,8 +4,12 @@
 
 namespace Okvpn\Bundle\DatadogBundle\DependencyInjection;
 
+use Okvpn\Bundle\DatadogBundle\Client\DatadogFactoryInterface;
+use Okvpn\Bundle\DatadogBundle\Client\DogStatsInterface;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\Config\FileLocator;
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Reference;
 use Symfony\Component\HttpKernel\DependencyInjection\Extension;
 use Symfony\Component\DependencyInjection\Loader;
 
@@ -28,9 +32,22 @@ public function load(array $configs, ContainerBuilder $container): void
             ->replaceArgument(6, $config['dedup_keep_time']);
         $container->getDefinition('okvpn_datadog.logger.artifact_storage')
             ->replaceArgument(0, $config['artifacts_path'] ?: $container->getParameter('kernel.logs_dir'));
+
         $container->getDefinition('okvpn_datadog.client')
             ->replaceArgument(0, $config);
 
+        if (isset($config['clients'])) {
+            foreach ($config['clients'] as $client) {
+                $this->loadClient($container, $client);
+            }
+
+            if (isset($config['clients']['default'])) {
+                $container->removeDefinition('okvpn_datadog.client');
+                $container->setAlias('okvpn_datadog.client', 'okvpn_datadog.client.default')->setPublic(true);
+                $container->setAlias(DogStatsInterface::class, 'okvpn_datadog.client.default')->setPublic(true);
+            }
+        }
+
         if (true === $config['profiling']) {
             if (true === $config['doctrine']) {
                 $loader->load('sqllogger.yml');
@@ -42,6 +59,15 @@ public function load(array $configs, ContainerBuilder $container): void
         $container->setParameter('okvpn_datadog.profiling', $config['profiling']);
     }
 
+    protected function loadClient(ContainerBuilder $container, array $client)
+    {
+        $ddDef = new Definition(DogStatsInterface::class, [$client]);
+        $ddDef->setFactory([new Reference(DatadogFactoryInterface::class), 'createClient']);
+
+        $container->setDefinition($id = sprintf('okvpn_datadog.client.%s', $client['alias']), $ddDef);
+        $container->registerAliasForArgument($id, DogStatsInterface::class, $client['alias']);
+    }
+
     protected function defaultHandlerExceptions(array $config): array
     {
         $config = $config['handle_exceptions'] ?? [];

src/Resources/config/services.yml

@@ -17,9 +17,15 @@ services:
             - null
             - null
 
+    Okvpn\Bundle\DatadogBundle\Client\DatadogFactory: ~
+
+    Okvpn\Bundle\DatadogBundle\Client\DatadogFactoryInterface:
+        alias: Okvpn\Bundle\DatadogBundle\Client\DatadogFactory
+
     okvpn_datadog.client:
         class: Okvpn\Bundle\DatadogBundle\Client\DatadogClient
-        arguments: [~]
+        factory: ['@Okvpn\Bundle\DatadogBundle\Client\DatadogFactoryInterface', 'createClient']
+        arguments: [[]]
         public: true
 
     Okvpn\Bundle\DatadogBundle\Client\DogStatsInterface: