feat: service map convention improvements

packages/Ecotone/src/Modelling/Api/Distribution/DistributedServiceMap.php

@@ -25,7 +25,7 @@ final class DistributedServiceMap implements DefinedObject
 {
     /**
      * @param array<string, string> $commandMapping - service name -> channel name (for command routing)
-     * @param array<string, array{keys: ?array<string>, exclude: array<string>}> $eventSubscriptions - channel name -> ['keys' => [...] or null, 'exclude' => [...]]
+     * @param array<string, array{keys: ?array<string>, exclude: array<string>, include: array<string>}> $eventSubscriptions - channel name -> ['keys' => [...] or null, 'exclude' => [...], 'include' => [...]]
      * @param array<object> $distributedBusAnnotations
      * @param bool|null $legacyMode - null = not set, true = legacy (withServiceMapping), false = new API (withCommandMapping/withEventMapping)
      */
@@ -58,6 +58,7 @@ public function withServiceMapping(string $serviceName, string $channelName, ?ar
         $self->eventSubscriptions[$channelName] = [
             'keys' => $subscriptionRoutingKeys,
             'exclude' => [],
+            'include' => [],
         ];
 
         return $self;
@@ -83,17 +84,26 @@ public function withCommandMapping(string $targetServiceName, string $channelNam
      *
      * @param string $channelName Target channel to send events to
      * @param array<string> $subscriptionKeys Routing key patterns to match
-     * @param array<string> $excludeEventsFromServices Service names whose events should NOT be sent to this channel
+     * @param array<string> $excludePublishingServices Service names whose events should NOT be sent to this channel
+     * @param array<string> $includePublishingServices Service names whose events should ONLY be sent to this channel (whitelist)
      */
-    public function withEventMapping(string $channelName, array $subscriptionKeys, array $excludeEventsFromServices = []): self
+    public function withEventMapping(string $channelName, array $subscriptionKeys, array $excludePublishingServices = [], array $includePublishingServices = []): self
     {
+        if ($excludePublishingServices !== [] && $includePublishingServices !== []) {
+            throw ConfigurationException::create(
+                "Cannot use both 'excludePublishingServices' and 'includePublishingServices' in the same event mapping for channel '{$channelName}'. " .
+                'These parameters are mutually exclusive - use either exclude (blacklist) or include (whitelist), not both.'
+            );
+        }
+
         $self = clone $this;
         $self->assertNotInLegacyMode('withEventMapping');
         $self->legacyMode = false;
 
         $self->eventSubscriptions[$channelName] = [
             'keys' => $subscriptionKeys,
-            'exclude' => $excludeEventsFromServices,
+            'exclude' => $excludePublishingServices,
+            'include' => $includePublishingServices,
         ];
 
         return $self;
@@ -153,7 +163,7 @@ public function getAllChannelNamesBesides(string $serviceName, string $routingKe
 
     /**
      * NEW MODE ONLY - Get all subscription channels for an event.
-     * Uses explicit exclude list from eventSubscriptions config.
+     * Uses explicit exclude/include list from eventSubscriptions config.
      *
      * @param string $sourceServiceName The service publishing the event
      * @param string $routingKey The event routing key
@@ -166,11 +176,16 @@ public function getAllSubscriptionChannels(string $sourceServiceName, string $ro
         foreach ($this->eventSubscriptions as $channel => $config) {
             $keys = $config['keys'];
             $exclude = $config['exclude'];
+            $include = $config['include'];
 
             if (in_array($sourceServiceName, $exclude, true)) {
                 continue;
             }
 
+            if ($include !== [] && ! \in_array($sourceServiceName, $include, true)) {
+                continue;
+            }
+
             foreach ($keys as $subscriptionEventFilter) {
                 if (BusRoutingMap::globMatch($subscriptionEventFilter, $routingKey)) {
                     $filteredChannels[] = $channel;

packages/Ecotone/tests/Messaging/Unit/Distributed/DistributedBusWithExplicitServiceMapTest.php

@@ -290,7 +290,7 @@ public function test_it_does_not_publish_event_to_publishing_service_when_exclud
                 ->withCommandMapping(targetServiceName: TestServiceName::TICKET_SERVICE, channelName: $ticketChannelName)
                 ->withCommandMapping(targetServiceName: TestServiceName::USER_SERVICE, channelName: $userChannelName)
                 ->withEventMapping(channelName: $ticketChannelName, subscriptionKeys: ['*'])
-                ->withEventMapping(channelName: $userChannelName, subscriptionKeys: ['*'], excludeEventsFromServices: [TestServiceName::USER_SERVICE])
+                ->withEventMapping(channelName: $userChannelName, subscriptionKeys: ['*'], excludePublishingServices: [TestServiceName::USER_SERVICE])
         );
         $ticketService = $this->bootstrapEcotone(TestServiceName::TICKET_SERVICE, ['Test\Ecotone\Messaging\Fixture\Distributed\DistributedEventBus\ReceiverTicket'], [new \Test\Ecotone\Messaging\Fixture\Distributed\DistributedEventBus\ReceiverTicket\TicketServiceReceiver()], $distributedTicketQueue);
 
@@ -851,4 +851,40 @@ public function test_cannot_use_with_event_mapping_after_legacy_with_service_map
             ->withServiceMapping('service1', 'channel1')
             ->withEventMapping('channel2', ['*']);
     }
+
+    public function test_it_publishes_event_only_to_channel_when_source_service_is_in_include_list(): void
+    {
+        $distributedTicketQueue = SimpleMessageChannelBuilder::createQueueChannel($ticketChannelName = 'distributed_ticket_channel');
+        $distributedUserQueue = SimpleMessageChannelBuilder::createQueueChannel($userChannelName = 'distributed_user_channel');
+        $userService = $this->bootstrapEcotone(
+            TestServiceName::USER_SERVICE,
+            [],
+            [],
+            [$distributedTicketQueue, $distributedUserQueue],
+            DistributedServiceMap::initialize()
+                ->withCommandMapping(targetServiceName: TestServiceName::TICKET_SERVICE, channelName: $ticketChannelName)
+                ->withCommandMapping(targetServiceName: TestServiceName::USER_SERVICE, channelName: $userChannelName)
+                ->withEventMapping(channelName: $ticketChannelName, subscriptionKeys: ['*'], includePublishingServices: [TestServiceName::TICKET_SERVICE])
+                ->withEventMapping(channelName: $userChannelName, subscriptionKeys: ['*'])
+        );
+        $ticketService = $this->bootstrapEcotone(TestServiceName::TICKET_SERVICE, ['Test\Ecotone\Messaging\Fixture\Distributed\DistributedEventBus\ReceiverTicket'], [new \Test\Ecotone\Messaging\Fixture\Distributed\DistributedEventBus\ReceiverTicket\TicketServiceReceiver()], $distributedTicketQueue);
+
+        $userService->getDistributedBus()->publishEvent(
+            'userService.billing.DetailsWereChanged',
+            'User changed billing address',
+            metadata: ['token' => '123']
+        );
+
+        self::assertNull($ticketService->getMessageChannel($ticketChannelName)->receive());
+        self::assertNotNull($userService->getMessageChannel($userChannelName)->receive());
+    }
+
+    public function test_cannot_use_both_exclude_and_include_publishing_services(): void
+    {
+        $this->expectException(ConfigurationException::class);
+        $this->expectExceptionMessage("Cannot use both 'excludePublishingServices' and 'includePublishingServices' in the same event mapping for channel 'channel1'. These parameters are mutually exclusive - use either exclude (blacklist) or include (whitelist), not both.");
+
+        DistributedServiceMap::initialize()
+            ->withEventMapping('channel1', ['*'], excludePublishingServices: ['service1'], includePublishingServices: ['service2']);
+    }
 }