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[Fix apache/incubator-kie-issues#1457] Allow grouping of events
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.../runtime/src/main/java/org/kie/kogito/events/process/AbstractMessagingEventPublisher.java
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| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
| package org.kie.kogito.events.process; | ||
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| import java.util.Collection; | ||
| import java.util.Optional; | ||
| import java.util.concurrent.CompletableFuture; | ||
| import java.util.concurrent.CompletionStage; | ||
| import java.util.function.Consumer; | ||
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| import org.eclipse.microprofile.reactive.messaging.Channel; | ||
| import org.eclipse.microprofile.reactive.messaging.Message; | ||
| import org.eclipse.microprofile.reactive.messaging.OnOverflow; | ||
| import org.eclipse.microprofile.reactive.messaging.OnOverflow.Strategy; | ||
| import org.kie.kogito.addon.quarkus.common.reactive.messaging.MessageDecoratorProvider; | ||
| import org.kie.kogito.event.DataEvent; | ||
| import org.kie.kogito.event.EventPublisher; | ||
| import org.kie.kogito.events.config.EventsRuntimeConfig; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import com.fasterxml.jackson.databind.ObjectMapper; | ||
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| import io.smallrye.reactive.messaging.MutinyEmitter; | ||
| import io.smallrye.reactive.messaging.providers.locals.ContextAwareMessage; | ||
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| import jakarta.annotation.PostConstruct; | ||
| import jakarta.enterprise.inject.Instance; | ||
| import jakarta.inject.Inject; | ||
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| public abstract class AbstractMessagingEventPublisher implements EventPublisher { | ||
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| private static final Logger logger = LoggerFactory.getLogger(AbstractMessagingEventPublisher.class); | ||
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| @Inject | ||
| ObjectMapper json; | ||
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| @Inject | ||
| @Channel(PROCESS_INSTANCES_TOPIC_NAME) | ||
| @OnOverflow(Strategy.UNBOUNDED_BUFFER) | ||
| MutinyEmitter<String> processInstancesEventsEmitter; | ||
| private AbstractMessageEmitter processInstanceConsumer; | ||
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| @Inject | ||
| @Channel(PROCESS_DEFINITIONS_TOPIC_NAME) | ||
| MutinyEmitter<String> processDefinitionEventsEmitter; | ||
| private AbstractMessageEmitter processDefinitionConsumer; | ||
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| @Inject | ||
| @Channel(USER_TASK_INSTANCES_TOPIC_NAME) | ||
| MutinyEmitter<String> userTasksEventsEmitter; | ||
| private AbstractMessageEmitter userTaskConsumer; | ||
| @Inject | ||
| EventsRuntimeConfig eventsRuntimeConfig; | ||
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| @Inject | ||
| Instance<MessageDecoratorProvider> decoratorProviderInstance; | ||
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| private MessageDecoratorProvider decoratorProvider; | ||
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| @PostConstruct | ||
| public void init() { | ||
| decoratorProvider = decoratorProviderInstance.isResolvable() ? decoratorProviderInstance.get() : null; | ||
| processDefinitionConsumer = eventsRuntimeConfig.isProcessInstancesPropagateError() ? new BlockingMessageEmitter(processDefinitionEventsEmitter, PROCESS_DEFINITIONS_TOPIC_NAME) | ||
| : new ReactiveMessageEmitter(processDefinitionEventsEmitter, PROCESS_DEFINITIONS_TOPIC_NAME); | ||
| processInstanceConsumer = eventsRuntimeConfig.isProcessDefinitionPropagateError() ? new BlockingMessageEmitter(processInstancesEventsEmitter, PROCESS_INSTANCES_TOPIC_NAME) | ||
| : new ReactiveMessageEmitter(processInstancesEventsEmitter, PROCESS_INSTANCES_TOPIC_NAME); | ||
| userTaskConsumer = eventsRuntimeConfig.isUserTasksPropagateError() ? new BlockingMessageEmitter(userTasksEventsEmitter, USER_TASK_INSTANCES_TOPIC_NAME) | ||
| : new ReactiveMessageEmitter(userTasksEventsEmitter, USER_TASK_INSTANCES_TOPIC_NAME); | ||
| } | ||
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| protected Optional<AbstractMessageEmitter> getConsumer(DataEvent<?> event) { | ||
| switch (event.getType()) { | ||
| case "ProcessDefinitionEvent": | ||
| return eventsRuntimeConfig.isProcessDefinitionEventsEnabled() ? Optional.of(processDefinitionConsumer) : Optional.empty(); | ||
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| case "ProcessInstanceErrorDataEvent": | ||
| case "ProcessInstanceNodeDataEvent": | ||
| case "ProcessInstanceSLADataEvent": | ||
| case "ProcessInstanceStateDataEvent": | ||
| case "ProcessInstanceVariableDataEvent": | ||
| return eventsRuntimeConfig.isProcessInstancesEventsEnabled() ? Optional.of(processInstanceConsumer) : Optional.empty(); | ||
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| case "UserTaskInstanceAssignmentDataEvent": | ||
| case "UserTaskInstanceAttachmentDataEvent": | ||
| case "UserTaskInstanceCommentDataEvent": | ||
| case "UserTaskInstanceDeadlineDataEvent": | ||
| case "UserTaskInstanceStateDataEvent": | ||
| case "UserTaskInstanceVariableDataEvent": | ||
| return eventsRuntimeConfig.isUserTasksEventsEnabled() ? Optional.of(userTaskConsumer) : Optional.empty(); | ||
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| default: | ||
| return Optional.empty(); | ||
| } | ||
| } | ||
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| @Override | ||
| public void publish(Collection<DataEvent<?>> events) { | ||
| for (DataEvent<?> event : events) { | ||
| publish(event); | ||
| } | ||
| } | ||
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| protected void publishToTopic(AbstractMessageEmitter emitter, Object event) { | ||
| logger.debug("About to publish event {} to topic {}", event, emitter.topic); | ||
| Message<String> message = null; | ||
| try { | ||
| String eventString = json.writeValueAsString(event); | ||
| logger.debug("Event payload '{}'", eventString); | ||
| message = decorateMessage(ContextAwareMessage.of(eventString)); | ||
| } catch (Exception e) { | ||
| logger.error("Error while creating event to topic {} for event {}", emitter.topic, event); | ||
| } | ||
| if (message != null) { | ||
| emitter.accept(message); | ||
| } | ||
| } | ||
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| protected Message<String> decorateMessage(Message<String> message) { | ||
| return decoratorProvider != null ? decoratorProvider.decorate(message) : message; | ||
| } | ||
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| protected static abstract class AbstractMessageEmitter implements Consumer<Message<String>> { | ||
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| protected final String topic; | ||
| protected final MutinyEmitter<String> emitter; | ||
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| protected AbstractMessageEmitter(MutinyEmitter<String> emitter, String topic) { | ||
| this.emitter = emitter; | ||
| this.topic = topic; | ||
| } | ||
| } | ||
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| private static class BlockingMessageEmitter extends AbstractMessageEmitter { | ||
| protected BlockingMessageEmitter(MutinyEmitter<String> emitter, String topic) { | ||
| super(emitter, topic); | ||
| } | ||
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| @Override | ||
| public void accept(Message<String> message) { | ||
| emitter.sendMessageAndAwait(message); | ||
| logger.debug("Successfully published message {}", message.getPayload()); | ||
| } | ||
| } | ||
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| private static class ReactiveMessageEmitter extends AbstractMessageEmitter { | ||
| protected ReactiveMessageEmitter(MutinyEmitter<String> emitter, String topic) { | ||
| super(emitter, topic); | ||
| } | ||
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| @Override | ||
| public void accept(Message<String> message) { | ||
| emitter.sendMessageAndForget(message | ||
| .withAck(() -> onAck(message)) | ||
| .withNack(reason -> onNack(reason, message))); | ||
| } | ||
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| private CompletionStage<Void> onAck(Message<String> message) { | ||
| logger.debug("Successfully published message {}", message.getPayload()); | ||
| return CompletableFuture.completedFuture(null); | ||
| } | ||
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| private CompletionStage<Void> onNack(Throwable reason, Message<String> message) { | ||
| logger.error("Error while publishing message {}", message, reason); | ||
| return CompletableFuture.completedFuture(null); | ||
| } | ||
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| } | ||
| } |
54 changes: 54 additions & 0 deletions
54
.../runtime/src/main/java/org/kie/kogito/events/process/GroupingMessagingEventPublisher.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,54 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
| package org.kie.kogito.events.process; | ||
|
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| import java.util.ArrayList; | ||
| import java.util.Collection; | ||
| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.Map.Entry; | ||
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| import org.kie.kogito.event.DataEvent; | ||
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| import io.quarkus.arc.properties.IfBuildProperty; | ||
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| import jakarta.inject.Singleton; | ||
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| @Singleton | ||
| @IfBuildProperty(name = "kogito.events.grouping", stringValue = "true") | ||
| public class GroupingMessagingEventPublisher extends AbstractMessagingEventPublisher { | ||
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| @Override | ||
| public void publish(DataEvent<?> event) { | ||
| publish(Collections.singletonList(event)); | ||
| } | ||
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| @Override | ||
| public void publish(Collection<DataEvent<?>> events) { | ||
| Map<AbstractMessageEmitter, Collection<DataEvent<?>>> eventsByChannel = new HashMap<>(); | ||
| for (DataEvent<?> event : events) { | ||
| getConsumer(event).ifPresent(c -> eventsByChannel.computeIfAbsent(c, k -> new ArrayList<>()).add(event)); | ||
| } | ||
| for (Entry<AbstractMessageEmitter, Collection<DataEvent<?>>> item : eventsByChannel.entrySet()) { | ||
| publishToTopic(item.getKey(), item.getValue()); | ||
| } | ||
| } | ||
|
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| } |
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