benchmarkio.benchmark.ProducerNoConsumerThenConsumer.java Source code

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Here is the source code for benchmarkio.benchmark.ProducerNoConsumerThenConsumer.java

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/*
 * Copyright 2015 eHarmony, 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 benchmarkio.benchmark;

import java.util.concurrent.CompletionService;

import org.HdrHistogram.Histogram;

import benchmarkio.benchmark.report.CoordinatorType;
import benchmarkio.benchmark.report.Report;
import benchmarkio.consumer.MessageConsumerCoordinator;
import benchmarkio.producer.MessageProducerCoordinator;

import com.google.common.base.Stopwatch;

/**
 * Represents a case when we have producer started without consumer,
 * then we start the consumer, while the producer is still running.
 * This helps test cases where we want to see how well we can drain
 * the messages, while there is some ongoing load on it.
 */
public class ProducerNoConsumerThenConsumer implements Benchmark {

    @Override
    public void run(final MessageConsumerCoordinator messageConsumerCoordinator,
            final MessageProducerCoordinator messageProducerCoordinator, final int numConsumers,
            final int numProducers, final long totalNumberOfMessages, final Report report) {
        CompletionService<Histogram> producerCompletionService = messageProducerCoordinator.startProducers();

        // Producer / No Consumer
        Stopwatch producerStartTime = Stopwatch.createStarted();
        report.aggregateAndPrintResults(CoordinatorType.PRODUCER, producerCompletionService, numProducers,
                totalNumberOfMessages, producerStartTime);

        // Now, let's start some consumers with producers
        final CompletionService<Histogram> consumerCompletionService = messageConsumerCoordinator.startConsumers();
        producerCompletionService = messageProducerCoordinator.startProducers();

        producerStartTime = Stopwatch.createStarted();
        final Stopwatch consumerStartTime = Stopwatch.createStarted();

        report.aggregateAndPrintResults(CoordinatorType.PRODUCER, producerCompletionService, numProducers,
                totalNumberOfMessages, producerStartTime);
        report.aggregateAndPrintResults(CoordinatorType.CONSUMER, consumerCompletionService, numConsumers,
                totalNumberOfMessages, consumerStartTime);
    }
}