com.pinterest.rocksplicator.controller.WorkerPoolTest.java Source code

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Here is the source code for com.pinterest.rocksplicator.controller.WorkerPoolTest.java

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/*
 * Copyright 2017 Pinterest, 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.pinterest.rocksplicator.controller;

import com.pinterest.rocksplicator.controller.tasks.SleepIncrementTask;

import com.fasterxml.jackson.core.JsonProcessingException;
import org.testng.Assert;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;

import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.Semaphore;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

public class WorkerPoolTest {
    static Integer nameCounter = 0;

    private Task getSleepIncrementTask() throws JsonProcessingException {
        Task task = new Task(new SleepIncrementTask(1000).getEntity());
        task.clusterName = nameCounter.toString();
        nameCounter += 1;
        return task;
    }

    @BeforeMethod
    public void setup() {
        SleepIncrementTask.executionCounter = 0;
    }

    @Test
    public void testAssignSingleTask() throws Exception {
        Semaphore idleWorkersSemaphore = new Semaphore(0);
        ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(1, 1, 0, TimeUnit.SECONDS,
                new ArrayBlockingQueue<Runnable>(1));
        WorkerPool workerPool = new WorkerPool(threadPoolExecutor, idleWorkersSemaphore, new TaskQueue() {
        });
        workerPool.assignTask(getSleepIncrementTask());
        Thread.sleep(2000);
        Assert.assertEquals(1, SleepIncrementTask.executionCounter.intValue());
        workerPool.assignTask(getSleepIncrementTask());
        Thread.sleep(2000);
        Assert.assertEquals(2, SleepIncrementTask.executionCounter.intValue());
        Assert.assertEquals(2, idleWorkersSemaphore.availablePermits());
    }

    @Test
    public void testAssignSameCluster() throws Exception {
        Semaphore idleWorkersSemaphore = new Semaphore(0);
        ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(1, 1, 0, TimeUnit.SECONDS,
                new ArrayBlockingQueue<Runnable>(1));
        WorkerPool workerPool = new WorkerPool(threadPoolExecutor, idleWorkersSemaphore, new TaskQueue() {
        });
        Task task = getSleepIncrementTask();
        workerPool.assignTask(task);
        Thread.sleep(2000);
        Assert.assertEquals(1, SleepIncrementTask.executionCounter.intValue());
        workerPool.assignTask(task);
        Thread.sleep(2000);
        Assert.assertEquals(2, (int) SleepIncrementTask.executionCounter);
        Assert.assertEquals(2, idleWorkersSemaphore.availablePermits());
    }

    @Test
    public void testAssignSameClusterConflict() throws Exception {
        Semaphore idleWorkersSemaphore = new Semaphore(0);
        ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(1, 1, 0, TimeUnit.SECONDS,
                new ArrayBlockingQueue<Runnable>(1));
        WorkerPool workerPool = new WorkerPool(threadPoolExecutor, idleWorkersSemaphore, new TaskQueue() {
        });
        Task task = getSleepIncrementTask();
        workerPool.assignTask(task);
        Thread.sleep(2000);
        Assert.assertEquals(1, SleepIncrementTask.executionCounter.intValue());
        workerPool.assignTask(task);
        Assert.assertEquals(1, idleWorkersSemaphore.availablePermits());
        Thread.sleep(100);
        Assert.assertEquals(1, SleepIncrementTask.executionCounter.intValue());
        Thread.sleep(1000);
    }

    @Test
    public void testCancelSingleTask() throws Exception {
        Semaphore idleWorkersSemaphore = new Semaphore(0);
        ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(1, 1, 0, TimeUnit.SECONDS,
                new ArrayBlockingQueue<Runnable>(1));
        WorkerPool workerPool = new WorkerPool(threadPoolExecutor, idleWorkersSemaphore, new TaskQueue() {
        });
        Task task = getSleepIncrementTask();
        workerPool.assignTask(task);
        Thread.sleep(10);
        workerPool.abortTask(task.clusterName);
        Thread.sleep(100);
        Assert.assertEquals(1, idleWorkersSemaphore.availablePermits());
    }

    @Test
    public void testAssignMultiTask() throws Exception {
        Semaphore idleWorkersSemaphore = new Semaphore(0);
        ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(2, 2, 0, TimeUnit.SECONDS,
                new ArrayBlockingQueue<Runnable>(1));
        WorkerPool workerPool = new WorkerPool(threadPoolExecutor, idleWorkersSemaphore, new TaskQueue() {
        });
        workerPool.assignTask(getSleepIncrementTask());
        workerPool.assignTask(getSleepIncrementTask());
        workerPool.assignTask(getSleepIncrementTask());
        Thread.sleep(1500);
        // Only expect 2 to finish because the pool size is 2
        Assert.assertEquals(2, SleepIncrementTask.executionCounter.intValue());
        Assert.assertEquals(2, idleWorkersSemaphore.availablePermits());
        Thread.sleep(1000);
    }

}