| // Copyright (C) 2021 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.kinesis; |
| |
| import com.amazonaws.services.kinesis.producer.KinesisProducer; |
| import com.amazonaws.services.kinesis.producer.UserRecordResult; |
| import com.google.common.flogger.FluentLogger; |
| import com.google.common.util.concurrent.FutureCallback; |
| import com.google.common.util.concurrent.Futures; |
| import com.google.common.util.concurrent.ListenableFuture; |
| import com.google.common.util.concurrent.SettableFuture; |
| import com.google.gerrit.server.events.Event; |
| import com.google.gerrit.server.events.EventGson; |
| import com.google.gerrit.server.events.EventListener; |
| import com.google.gson.Gson; |
| import com.google.inject.Inject; |
| import com.google.inject.Singleton; |
| import java.nio.ByteBuffer; |
| import java.util.concurrent.CancellationException; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| @Singleton |
| class KinesisPublisher implements EventListener { |
| private static final FluentLogger logger = FluentLogger.forEnclosingClass(); |
| |
| private final KinesisProducer kinesisProducer; |
| private final Configuration configuration; |
| private final ExecutorService callBackExecutor; |
| |
| private final Gson gson; |
| |
| @Inject |
| public KinesisPublisher( |
| @EventGson Gson gson, |
| KinesisProducer kinesisProducer, |
| Configuration configuration, |
| @ProducerCallbackExecutor ExecutorService callBackExecutor) { |
| this.gson = gson; |
| this.kinesisProducer = kinesisProducer; |
| this.configuration = configuration; |
| this.callBackExecutor = callBackExecutor; |
| } |
| |
| @Override |
| public void onEvent(Event event) { |
| publish(configuration.getStreamEventsTopic(), event); |
| } |
| |
| ListenableFuture<Boolean> publish(String streamName, Event event) { |
| if (configuration.isSendAsync()) { |
| return publishAsync(streamName, gson.toJson(event), event.getType()); |
| } |
| return publishSync(streamName, gson.toJson(event), event.getType()); |
| } |
| |
| private ListenableFuture<Boolean> publishSync( |
| String streamName, String stringEvent, String partitionKey) { |
| SettableFuture<Boolean> resultFuture = SettableFuture.create(); |
| try { |
| resultFuture.set( |
| publishAsync(streamName, stringEvent, partitionKey) |
| .get(configuration.getPublishTimeoutMs(), TimeUnit.MILLISECONDS)); |
| } catch (CancellationException |
| | ExecutionException |
| | InterruptedException |
| | TimeoutException futureException) { |
| logger.atSevere().withCause(futureException).log( |
| "KINESIS PRODUCER - Failed publishing event %s [PK: %s]", stringEvent, partitionKey); |
| resultFuture.set(false); |
| } |
| |
| return resultFuture; |
| } |
| |
| private ListenableFuture<Boolean> publishAsync( |
| String streamName, String stringEvent, String partitionKey) { |
| try { |
| ListenableFuture<UserRecordResult> publishF = |
| kinesisProducer.addUserRecord( |
| streamName, partitionKey, ByteBuffer.wrap(stringEvent.getBytes())); |
| |
| Futures.addCallback( |
| publishF, |
| new FutureCallback<UserRecordResult>() { |
| @Override |
| public void onSuccess(UserRecordResult result) { |
| logger.atFine().log( |
| "KINESIS PRODUCER - Successfully published event '%s' to shardId '%s' [PK: %s] [Sequence: %s] after %s attempt(s)", |
| stringEvent, |
| result.getShardId(), |
| partitionKey, |
| result.getSequenceNumber(), |
| result.getAttempts().size()); |
| } |
| |
| @Override |
| public void onFailure(Throwable e) { |
| logger.atSevere().withCause(e).log( |
| "KINESIS PRODUCER - Failed publishing event %s [PK: %s]", |
| stringEvent, partitionKey); |
| } |
| }, |
| callBackExecutor); |
| |
| return Futures.transform( |
| publishF, res -> res != null && res.isSuccessful(), callBackExecutor); |
| } catch (Exception e) { |
| logger.atSevere().withCause(e).log( |
| "KINESIS PRODUCER - Error when publishing event %s [PK: %s]", stringEvent, partitionKey); |
| return Futures.immediateFailedFuture(e); |
| } |
| } |
| } |