feature #39342 [Notifier] Add mercure bridge (mtarld)

This PR was merged into the 5.3-dev branch.

Discussion
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[Notifier] Add mercure bridge

| Q             | A
| ------------- | ---
| Branch?       | 5.x
| Bug fix?      | no
| New feature?  | yes
| Deprecations? | no
| Tickets       | Fix #36481
| License       | MIT
| Doc PR        | symfony/symfony-docs#14840

Add a Notifier bridge for Mercure.
In this PR, Mercure is considered as a chatter (I'm still wondering if it's the most appropriate type).

The first approach for the DSN is `mercure://jwtToken@host:port/hubPath?topic=/foo/1&secure=false` with:
- `topic` optional (defaults to `null`)
- `secure` optional (defaults to `true`)

I'm not sure about the current way to deal with http/https. Maybe we can just replace the `mercure` scheme by `http|https`?

The notification representation is following [Activity Streams](https://www.w3.org/TR/activitystreams-core/#jsonld)

#SymfonyHackday

Commits
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19c6544f42 [Notifier] Add mercure bridge

Author: OskarStark

DependencyInjection/FrameworkExtension.php

@@ -25,6 +25,7 @@
 use Symfony\Bundle\FrameworkBundle\Routing\AnnotatedRouteControllerLoader;
 use Symfony\Bundle\FrameworkBundle\Routing\RouteLoaderInterface;
 use Symfony\Bundle\FullStack;
+use Symfony\Bundle\MercureBundle\MercureBundle;
 use Symfony\Component\Asset\PackageInterface;
 use Symfony\Component\BrowserKit\AbstractBrowser;
 use Symfony\Component\Cache\Adapter\AdapterInterface;
@@ -43,6 +44,8 @@
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\DependencyInjection\Alias;
 use Symfony\Component\DependencyInjection\Argument\ServiceClosureArgument;
+use Symfony\Component\DependencyInjection\Argument\ServiceLocatorArgument;
+use Symfony\Component\DependencyInjection\Argument\TaggedIteratorArgument;
 use Symfony\Component\DependencyInjection\ChildDefinition;
 use Symfony\Component\DependencyInjection\Compiler\ServiceLocatorTagPass;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
@@ -112,6 +115,7 @@
 use Symfony\Component\Notifier\Bridge\Iqsms\IqsmsTransportFactory;
 use Symfony\Component\Notifier\Bridge\LinkedIn\LinkedInTransportFactory;
 use Symfony\Component\Notifier\Bridge\Mattermost\MattermostTransportFactory;
+use Symfony\Component\Notifier\Bridge\Mercure\MercureTransportFactory;
 use Symfony\Component\Notifier\Bridge\Mobyt\MobytTransportFactory;
 use Symfony\Component\Notifier\Bridge\Nexmo\NexmoTransportFactory;
 use Symfony\Component\Notifier\Bridge\Octopush\OctopushTransportFactory;
@@ -2242,6 +2246,7 @@ private function registerNotifierConfiguration(array $config, ContainerBuilder $
             LinkedInTransportFactory::class => 'notifier.transport_factory.linkedin',
             GatewayApiTransportFactory::class => 'notifier.transport_factory.gatewayapi',
             OctopushTransportFactory::class => 'notifier.transport_factory.octopush',
+            MercureTransportFactory::class => 'notifier.transport_factory.mercure',
         ];
 
         foreach ($classToServices as $class => $service) {
@@ -2250,6 +2255,15 @@ private function registerNotifierConfiguration(array $config, ContainerBuilder $
             }
         }
 
+        if (class_exists(MercureTransportFactory::class)) {
+            if (!class_exists(MercureBundle::class)) {
+                throw new \LogicException('The MercureBundle is not registered in your application. Try running "composer require symfony/mercure-bundle".');
+            }
+
+            $container->getDefinition($classToServices[MercureTransportFactory::class])
+                ->replaceArgument('$publisherLocator', new ServiceLocatorArgument(new TaggedIteratorArgument('mercure.publisher', null, null, true)));
+        }
+
         if (isset($config['admin_recipients'])) {
             $notifier = $container->getDefinition('notifier');
             foreach ($config['admin_recipients'] as $i => $recipient) {

Resources/config/notifier_transports.php

@@ -22,6 +22,7 @@
 use Symfony\Component\Notifier\Bridge\Iqsms\IqsmsTransportFactory;
 use Symfony\Component\Notifier\Bridge\LinkedIn\LinkedInTransportFactory;
 use Symfony\Component\Notifier\Bridge\Mattermost\MattermostTransportFactory;
+use Symfony\Component\Notifier\Bridge\Mercure\MercureTransportFactory;
 use Symfony\Component\Notifier\Bridge\Mobyt\MobytTransportFactory;
 use Symfony\Component\Notifier\Bridge\Nexmo\NexmoTransportFactory;
 use Symfony\Component\Notifier\Bridge\Octopush\OctopushTransportFactory;
@@ -135,6 +136,10 @@
             ->parent('notifier.transport_factory.abstract')
             ->tag('texter.transport_factory')
 
+        ->set('notifier.transport_factory.mercure', MercureTransportFactory::class)
+            ->parent('notifier.transport_factory.abstract')
+            ->tag('chatter.transport_factory')
+
         ->set('notifier.transport_factory.null', NullTransportFactory::class)
             ->parent('notifier.transport_factory.abstract')
             ->tag('chatter.transport_factory')