com.google.pubsub.clients.vtk.CPSPublisherTask.java Source code

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Here is the source code for com.google.pubsub.clients.vtk.CPSPublisherTask.java

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// Copyright 2016 Google Inc.
//
// 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.google.pubsub.clients.vtk;

import com.beust.jcommander.JCommander;
import com.google.api.gax.core.RpcFutureCallback;
import com.google.cloud.pubsub.spi.v1.PublisherClient;
import com.google.cloud.pubsub.spi.v1.PublisherSettings;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.SettableFuture;
import com.google.protobuf.ByteString;
import com.google.protobuf.util.Durations;
import com.google.pubsub.clients.common.LoadTestRunner;
import com.google.pubsub.clients.common.MetricsHandler;
import com.google.pubsub.clients.common.Task;
import com.google.pubsub.flic.common.LoadtestProto.StartRequest;
import com.google.pubsub.v1.PublishRequest;
import com.google.pubsub.v1.PublishResponse;
import com.google.pubsub.v1.PubsubMessage;
import com.google.pubsub.v1.TopicName;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import java.util.concurrent.atomic.AtomicInteger;
import org.joda.time.Duration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/** Runs a task that publishes messages to a Cloud Pub/Sub topic. */
class CPSPublisherTask extends Task {
    private static final Logger log = LoggerFactory.getLogger(CPSPublisherTask.class);
    private final String topic;
    private final PublisherClient publisherApi;
    private final ByteString payload;
    private final int batchSize;
    private final Integer id;
    private final AtomicInteger sequenceNumber = new AtomicInteger(0);

    private CPSPublisherTask(StartRequest request) {
        super(request, "vtk", MetricsHandler.MetricName.PUBLISH_ACK_LATENCY);
        PublisherSettings.Builder publisherSettingsBuilder = PublisherSettings.defaultBuilder();
        publisherSettingsBuilder.publishSettings().getBundlingSettingsBuilder()
                .setDelayThreshold(Duration.millis(Durations.toMillis(request.getPublishBatchDuration())))
                .setElementCountThreshold(950L).setRequestByteThreshold(9500000L);
        try {
            this.publisherApi = PublisherClient.create(publisherSettingsBuilder.build());
        } catch (Exception e) {
            throw new RuntimeException("Error creating publisher API.", e);
        }
        this.topic = TopicName.create(request.getProject(), request.getTopic()).toString();
        this.payload = ByteString.copyFromUtf8(LoadTestRunner.createMessage(request.getMessageSize()));
        this.batchSize = request.getPublishBatchSize();
        this.id = (new Random()).nextInt();
    }

    public static void main(String[] args) throws Exception {
        LoadTestRunner.Options options = new LoadTestRunner.Options();
        new JCommander(options, args);
        LoadTestRunner.run(options, CPSPublisherTask::new);
    }

    @Override
    public ListenableFuture<RunResult> doRun() {
        List<PubsubMessage> messages = new ArrayList<>(batchSize);
        String sendTime = String.valueOf(System.currentTimeMillis());
        for (int i = 0; i < batchSize; i++) {
            messages.add(PubsubMessage.newBuilder().setData(payload).putAttributes("sendTime", sendTime)
                    .putAttributes("clientId", id.toString())
                    .putAttributes("sequenceNumber", Integer.toString(sequenceNumber.getAndIncrement())).build());
        }
        PublishRequest request = PublishRequest.newBuilder().setTopic(topic).addAllMessages(messages).build();
        SettableFuture<RunResult> result = SettableFuture.create();
        publisherApi.publishCallable().futureCall(request).addCallback(new RpcFutureCallback<PublishResponse>() {
            @Override
            public void onSuccess(PublishResponse s) {
                result.set(RunResult.fromBatchSize(batchSize));
            }

            @Override
            public void onFailure(Throwable t) {
                result.setException(t);
            }
        });
        return result;
    }
}