| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.curator.utils; |
| |
| import static org.junit.jupiter.api.Assertions.assertEquals; |
| import static org.junit.jupiter.api.Assertions.assertTrue; |
| import com.google.common.collect.Lists; |
| import org.awaitility.Awaitility; |
| import org.junit.jupiter.api.AfterEach; |
| import org.junit.jupiter.api.BeforeEach; |
| import org.junit.jupiter.api.Test; |
| |
| import java.util.List; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.TimeUnit; |
| |
| public class TestCloseableExecutorService |
| { |
| private static final int QTY = 10; |
| |
| private volatile ExecutorService executorService; |
| |
| @BeforeEach |
| public void setup() |
| { |
| executorService = Executors.newFixedThreadPool(QTY * 2); |
| } |
| |
| @AfterEach |
| public void tearDown() |
| { |
| executorService.shutdownNow(); |
| } |
| |
| @Test |
| public void testBasicRunnable() throws InterruptedException |
| { |
| try |
| { |
| CloseableExecutorService service = new CloseableExecutorService(executorService); |
| CountDownLatch startLatch = new CountDownLatch(QTY); |
| CountDownLatch latch = new CountDownLatch(QTY); |
| for ( int i = 0; i < QTY; ++i ) |
| { |
| submitRunnable(service, startLatch, latch); |
| } |
| |
| assertTrue(startLatch.await(3, TimeUnit.SECONDS)); |
| service.close(); |
| assertTrue(latch.await(3, TimeUnit.SECONDS)); |
| } |
| catch ( AssertionError e ) |
| { |
| throw e; |
| } |
| catch ( Throwable e ) |
| { |
| e.printStackTrace(); |
| } |
| } |
| |
| @Test |
| public void testBasicCallable() throws InterruptedException |
| { |
| CloseableExecutorService service = new CloseableExecutorService(executorService); |
| final CountDownLatch startLatch = new CountDownLatch(QTY); |
| final CountDownLatch latch = new CountDownLatch(QTY); |
| for ( int i = 0; i < QTY; ++i ) |
| { |
| service.submit |
| ( |
| (Callable<Void>) () -> { |
| try |
| { |
| startLatch.countDown(); |
| Thread.currentThread().join(); |
| } |
| catch ( InterruptedException e ) |
| { |
| Thread.currentThread().interrupt(); |
| } |
| finally |
| { |
| latch.countDown(); |
| } |
| return null; |
| } |
| ); |
| } |
| |
| assertTrue(startLatch.await(3, TimeUnit.SECONDS)); |
| service.close(); |
| assertTrue(latch.await(3, TimeUnit.SECONDS)); |
| } |
| |
| @Test |
| public void testListeningRunnable() throws InterruptedException |
| { |
| CloseableExecutorService service = new CloseableExecutorService(executorService); |
| List<Future<?>> futures = Lists.newArrayList(); |
| final CountDownLatch startLatch = new CountDownLatch(QTY); |
| for ( int i = 0; i < QTY; ++i ) |
| { |
| Future<?> future = service.submit |
| ( |
| () -> { |
| try |
| { |
| startLatch.countDown(); |
| Thread.currentThread().join(); |
| } |
| catch ( InterruptedException e ) |
| { |
| Thread.currentThread().interrupt(); |
| } |
| } |
| ); |
| futures.add(future); |
| } |
| |
| assertTrue(startLatch.await(3, TimeUnit.SECONDS)); |
| |
| for ( Future<?> future : futures ) |
| { |
| future.cancel(true); |
| } |
| |
| assertEquals(service.size(), 0); |
| } |
| |
| @Test |
| public void testListeningCallable() throws InterruptedException |
| { |
| CloseableExecutorService service = new CloseableExecutorService(executorService); |
| final CountDownLatch startLatch = new CountDownLatch(QTY); |
| List<Future<?>> futures = Lists.newArrayList(); |
| for ( int i = 0; i < QTY; ++i ) |
| { |
| Future<?> future = service.submit |
| ( |
| (Callable<Void>) () -> { |
| try |
| { |
| startLatch.countDown(); |
| Thread.currentThread().join(); |
| } |
| catch ( InterruptedException e ) |
| { |
| Thread.currentThread().interrupt(); |
| } |
| return null; |
| } |
| ); |
| futures.add(future); |
| } |
| |
| assertTrue(startLatch.await(3, TimeUnit.SECONDS)); |
| for ( Future<?> future : futures ) |
| { |
| future.cancel(true); |
| } |
| |
| assertEquals(service.size(), 0); |
| } |
| |
| @Test |
| public void testPartialRunnable() throws InterruptedException |
| { |
| final CountDownLatch outsideLatch = new CountDownLatch(1); |
| executorService.submit |
| ( |
| () -> { |
| try |
| { |
| Thread.currentThread().join(); |
| } |
| catch ( InterruptedException e ) |
| { |
| Thread.currentThread().interrupt(); |
| } |
| finally |
| { |
| outsideLatch.countDown(); |
| } |
| } |
| ); |
| |
| CloseableExecutorService service = new CloseableExecutorService(executorService); |
| CountDownLatch startLatch = new CountDownLatch(QTY); |
| CountDownLatch latch = new CountDownLatch(QTY); |
| for ( int i = 0; i < QTY; ++i ) |
| { |
| submitRunnable(service, startLatch, latch); |
| } |
| |
| Awaitility.await().until(()-> service.size() >= QTY); |
| |
| assertTrue(startLatch.await(3, TimeUnit.SECONDS)); |
| service.close(); |
| assertTrue(latch.await(3, TimeUnit.SECONDS)); |
| assertEquals(outsideLatch.getCount(), 1); |
| } |
| |
| private void submitRunnable(CloseableExecutorService service, final CountDownLatch startLatch, final CountDownLatch latch) |
| { |
| service.submit |
| ( |
| () -> { |
| try |
| { |
| startLatch.countDown(); |
| Thread.sleep(100000); |
| } |
| catch ( InterruptedException e ) |
| { |
| Thread.currentThread().interrupt(); |
| } |
| finally |
| { |
| latch.countDown(); |
| } |
| } |
| ); |
| } |
| } |