| // Copyright (C) 2023 The Android Open Source Project |
| // |
| // Licensed 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 com.googlesource.gerrit.plugins.replication.pull.event; |
| |
| import static com.googlesource.gerrit.plugins.replication.pull.event.EventsBrokerConsumerModule.STREAM_EVENTS_GROUP_ID; |
| import static com.googlesource.gerrit.plugins.replication.pull.event.EventsBrokerConsumerModule.STREAM_EVENTS_TOPIC_NAME; |
| |
| import com.gerritforge.gerrit.eventbroker.BrokerApi; |
| import com.gerritforge.gerrit.eventbroker.ExtendedBrokerApi; |
| import com.google.common.flogger.FluentLogger; |
| import com.google.gerrit.common.Nullable; |
| import com.google.gerrit.extensions.events.LifecycleListener; |
| import com.google.gerrit.extensions.registration.DynamicItem; |
| import com.google.gerrit.extensions.restapi.AuthException; |
| import com.google.gerrit.server.events.Event; |
| import com.google.gerrit.server.permissions.PermissionBackendException; |
| import com.google.inject.Inject; |
| import com.google.inject.name.Named; |
| import com.googlesource.gerrit.plugins.replication.pull.ShutdownState; |
| import java.util.function.Consumer; |
| |
| public class EventsBrokerMessageConsumer implements Consumer<Event>, LifecycleListener { |
| |
| private static final FluentLogger logger = FluentLogger.forEnclosingClass(); |
| private final DynamicItem<BrokerApi> eventsBroker; |
| private final StreamEventListener eventListener; |
| private final ShutdownState shutdownState; |
| private final String eventsTopicName; |
| private final String groupId; |
| |
| @Inject |
| public EventsBrokerMessageConsumer( |
| DynamicItem<BrokerApi> eventsBroker, |
| StreamEventListener eventListener, |
| ShutdownState shutdownState, |
| @Named(STREAM_EVENTS_TOPIC_NAME) String eventsTopicName, |
| @Nullable @Named(STREAM_EVENTS_GROUP_ID) String groupId) { |
| |
| this.eventsBroker = eventsBroker; |
| this.eventListener = eventListener; |
| this.shutdownState = shutdownState; |
| this.eventsTopicName = eventsTopicName; |
| this.groupId = groupId; |
| } |
| |
| @Override |
| public void accept(Event event) { |
| try { |
| eventListener.fetchRefsForEvent(event); |
| if (shutdownState.isShuttingDown()) stop(); |
| } catch (AuthException | PermissionBackendException e) { |
| throw new EventRejectedException(event, e); |
| } |
| } |
| |
| @Override |
| public void start() { |
| BrokerApi brokerApi = eventsBroker.get(); |
| if (groupId == null) { |
| brokerApi.receiveAsync(eventsTopicName, this); |
| return; |
| } |
| |
| if (!(eventsBroker instanceof ExtendedBrokerApi)) { |
| throw new IllegalArgumentException( |
| String.format( |
| "Failed to load the pull-replication plugin: %s does not support the custom group-id '%s'.\n" |
| + "Remove replication.eventBrokerGroupId from replication.config or install a different event-broker plugin.", |
| eventsBroker.getClass(), groupId)); |
| } |
| |
| ((ExtendedBrokerApi) brokerApi).receiveAsync(eventsTopicName, groupId, this); |
| } |
| |
| @Override |
| public void stop() { |
| shutdownState.setIsShuttingDown(true); |
| eventsBroker.get().disconnect(); |
| } |
| } |