PROD-29620: Replace all EDA Handlers with dummies if there is no Publ…

…isher

modules/social_features/social_core/src/EdaDummyHandler.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Drupal\social_core;
+
+/**
+ * A dummy handler that equals a no-op.
+ *
+ * This ensures people who do not use the EDA to publish events to an external
+ * event bus don't have any performance penalty from loading or formatting data.
+ */
+class EdaDummyHandler {
+
+  /**
+   * {@inheritDoc}
+   */
+  public function __call(string $name, array $arguments): void {}
+
+}

modules/social_features/social_core/src/SocialCoreServiceProvider.php

@@ -4,6 +4,7 @@
 
 use Drupal\Core\DependencyInjection\ServiceProviderBase;
 use Drupal\Core\DependencyInjection\ContainerBuilder;
+use Drupal\social_eda_dispatcher\Dispatcher as SocialEdaDispatcher;
 
 /**
  * Class SocialCoreServiceProvider.
@@ -15,7 +16,7 @@ class SocialCoreServiceProvider extends ServiceProviderBase {
   /**
    * {@inheritdoc}
    */
-  public function alter(ContainerBuilder $container) {
+  public function alter(ContainerBuilder $container): void {
     // Overrides language_manager class to test domain language negotiation.
     $definition = $container->getDefinition('entity.autocomplete_matcher');
     $definition->setClass('Drupal\social_core\Entity\EntityAutocompleteMatcher');
@@ -29,6 +30,14 @@ public function alter(ContainerBuilder $container) {
         $definition->setClass('Drupal\social_core\Entity\Select2EntityAutocompleteMatcher');
       }
     }
+
+    // Replaces all EDA Handlers with dummies if there is no Publisher.
+    if (!$container->hasDefinition(SocialEdaDispatcher::class)) {
+      foreach ($container->findTaggedServiceIds('social.eda.handler') as $id => $attributes) {
+        $definition = $container->getDefinition($id);
+        $definition->setClass(EdaDummyHandler::class);
+      }
+    }
   }
 
 }

modules/social_features/social_event/social_event.services.yml

@@ -22,3 +22,5 @@ services:
   social_event.eda_handler:
     autowire: true
     class: Drupal\social_event\EdaHandler
+    tags:
+      - { name: social.eda.handler }

phpstan-baseline.neon

@@ -4763,11 +4763,6 @@ parameters:
 			count: 1
 			path: modules/social_features/social_core/src/Routing/RouteSubscriber.php
 
-		-
-			message: "#^Method Drupal\\\\social_core\\\\SocialCoreServiceProvider\\:\\:alter\\(\\) has no return type specified\\.$#"
-			count: 1
-			path: modules/social_features/social_core/src/SocialCoreServiceProvider.php
-
 		-
 			message: "#^Method Drupal\\\\social_download_count\\\\SocialDownloadCountConfigOverride\\:\\:createConfigObject\\(\\) should return Drupal\\\\Core\\\\Config\\\\StorableConfigBase but returns null\\.$#"
 			count: 1
@@ -13400,3 +13395,8 @@ parameters:
 			message: "#^Property Drupal\\\\social_event\\\\Event\\\\EventCreateEventData::\\$href has unknown class Drupal\\\\social_eda\\\\Types\\\\Href as its type\\.$#"
 			count: 1
 			path: modules/social_features/social_event/src/Event/EventCreateEventData.php
+
+		-
+			message: "#^Class Drupal\\\\social_eda_dispatcher\\\\Dispatcher not found\\.$#"
+			count: 1
+			path: modules/social_features/social_core/src/SocialCoreServiceProvider.php