io.zeebe.perftest.helper.FixedRateLatencyTest Maven / Gradle / Ivy

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/*
 * Copyright © 2017 camunda services GmbH ([email protected])
 *
 * 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 io.zeebe.perftest.helper;

import static io.zeebe.client.ClientProperties.CLIENT_MAXREQUESTS;
import static io.zeebe.perftest.helper.TestHelper.printProperties;

import java.util.Properties;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.function.Consumer;
import java.util.function.Supplier;

import org.HdrHistogram.Histogram;

import io.zeebe.client.ClientProperties;
import io.zeebe.client.ZeebeClient;
import io.zeebe.perftest.CommonProperties;

public abstract class FixedRateLatencyTest
{
    public static final String TEST_WARMUP_TIMEMS = "test.warmup.timems";
    public static final String TEST_WARMUP_REQUESTRATE = "test.warmup.requestRate";
    public static final String TEST_REQUESTRATE = "test.requestRate";

    public void run()
    {
        final Properties properties = System.getProperties();

        setDefaultProperties(properties);
        ClientProperties.setDefaults(properties);

        printProperties(properties);

        ZeebeClient client = null;

        try
        {
            client = ZeebeClient.create(properties);
            client.connect();

            executeSetup(properties, client);
            executeWarmup(properties, client);
            executeTest(properties, client);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        finally
        {
            client.close();
        }

    }

    protected void setDefaultProperties(final Properties properties)
    {
        properties.putIfAbsent(TEST_WARMUP_TIMEMS, "30000");
        properties.putIfAbsent(TEST_WARMUP_REQUESTRATE, "1000");
        properties.putIfAbsent(CommonProperties.TEST_TIMEMS, "30000");
        properties.putIfAbsent(TEST_REQUESTRATE, "5000");
        properties.putIfAbsent(CommonProperties.TEST_OUTPUT_FILE_NAME, "data/output.txt");
        properties.putIfAbsent(CLIENT_MAXREQUESTS, "2048");
    }

    protected void executeSetup(Properties properties, ZeebeClient client)
    {
        // noop
    }

    @SuppressWarnings("rawtypes")
    protected void executeWarmup(Properties properties, ZeebeClient client)
    {
        System.out.format("Executing warmup\n");

        final int warmupRequestRate = Integer.parseInt(properties.getProperty(TEST_WARMUP_REQUESTRATE));
        final int warmupTimeMs = Integer.parseInt(properties.getProperty(TEST_WARMUP_TIMEMS));

        final Consumer noopLatencyConsumer = (latency) ->
        {
            // ignore
        };

        final Supplier requestFn = requestFn(client);

        TestHelper.executeAtFixedRate(requestFn, noopLatencyConsumer, warmupRequestRate, warmupTimeMs);

        System.out.println("Finished warmup.");

        TestHelper.gc();
    }

    @SuppressWarnings("rawtypes")
    protected void executeTest(Properties properties, ZeebeClient client)
    {
        System.out.format("Executing test\n");

        final int requestRate = Integer.parseInt(properties.getProperty(TEST_REQUESTRATE));
        final int timeMs = Integer.parseInt(properties.getProperty(CommonProperties.TEST_TIMEMS));

        final Histogram histogram = new Histogram(TimeUnit.SECONDS.toNanos(10), 3);

        final Consumer noopLatencyConsumer = (latency) ->
        {
            histogram.recordValue(latency);
        };

        final Supplier requestFn = requestFn(client);

        final int errors = TestHelper.executeAtFixedRate(requestFn, noopLatencyConsumer, requestRate, timeMs);

        System.out.format("Finished test. Errors (failed to send request due to backpressure): %d\n", errors);

        final String outputFileName = properties.getProperty(CommonProperties.TEST_OUTPUT_FILE_NAME);
        TestHelper.recordHistogram(histogram, outputFileName);

        TestHelper.gc();
    }

    protected abstract Supplier requestFn(ZeebeClient client);
}