| /** |
| * 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.camel.util.concurrent; |
| |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.TimeUnit; |
| |
| import junit.framework.TestCase; |
| |
| /** |
| * @version |
| */ |
| public class SubmitOrderedCompletionServiceTest extends TestCase { |
| |
| private ExecutorService executor; |
| private SubmitOrderedCompletionService<Object> service; |
| |
| @Override |
| protected void setUp() throws Exception { |
| executor = Executors.newFixedThreadPool(5); |
| service = new SubmitOrderedCompletionService<Object>(executor); |
| } |
| |
| @Override |
| protected void tearDown() throws Exception { |
| executor.shutdownNow(); |
| } |
| |
| public void testSubmitOrdered() throws Exception { |
| |
| service.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| return "A"; |
| } |
| }); |
| |
| service.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| return "B"; |
| } |
| }); |
| |
| Object a = service.take().get(); |
| Object b = service.take().get(); |
| |
| assertEquals("A", a); |
| assertEquals("B", b); |
| } |
| |
| public void testSubmitOrderedFirstTaskIsSlow() throws Exception { |
| |
| service.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| // this task should be slower than B but we should still get it first |
| Thread.sleep(200); |
| return "A"; |
| } |
| }); |
| |
| service.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| return "B"; |
| } |
| }); |
| |
| Object a = service.take().get(); |
| Object b = service.take().get(); |
| |
| assertEquals("A", a); |
| assertEquals("B", b); |
| } |
| |
| public void testSubmitOrderedFirstTaskIsSlowUsingPollTimeout() throws Exception { |
| |
| service.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| // this task should be slower than B but we should still get it first |
| Thread.sleep(200); |
| return "A"; |
| } |
| }); |
| |
| service.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| return "B"; |
| } |
| }); |
| |
| Object a = service.poll(5, TimeUnit.SECONDS).get(); |
| Object b = service.poll(5, TimeUnit.SECONDS).get(); |
| |
| assertEquals("A", a); |
| assertEquals("B", b); |
| } |
| |
| public void testSubmitOrderedFirstTaskIsSlowUsingPoll() throws Exception { |
| |
| service.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| // this task should be slower than B but we should still get it first |
| Thread.sleep(1000); |
| return "A"; |
| } |
| }); |
| |
| service.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| return "B"; |
| } |
| }); |
| |
| // poll should not get it the first time |
| Object a = service.poll(); |
| assertNull(a); |
| |
| Thread.sleep(100); |
| |
| // and neither the 2nd time |
| a = service.poll(); |
| assertNull(a); |
| |
| // okay take them |
| a = service.take().get(); |
| Object b = service.take().get(); |
| |
| assertEquals("A", a); |
| assertEquals("B", b); |
| } |
| |
| public void testSubmitOrderedSecondTaskIsSlow() throws Exception { |
| |
| service.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| return "A"; |
| } |
| }); |
| |
| service.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| Thread.sleep(200); |
| return "B"; |
| } |
| }); |
| |
| Object a = service.take().get(); |
| Object b = service.take().get(); |
| |
| assertEquals("A", a); |
| assertEquals("B", b); |
| } |
| |
| public void testSubmitOrderedSecondTaskIsSlowUsingPollTimeout() throws Exception { |
| |
| service.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| return "A"; |
| } |
| }); |
| |
| service.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| Thread.sleep(200); |
| return "B"; |
| } |
| }); |
| |
| Object a = service.poll(5, TimeUnit.SECONDS).get(); |
| Object b = service.poll(5, TimeUnit.SECONDS).get(); |
| |
| assertEquals("A", a); |
| assertEquals("B", b); |
| } |
| |
| public void testSubmitOrderedLastTaskIsSlowUsingPoll() throws Exception { |
| |
| service.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| return "A"; |
| } |
| }); |
| |
| service.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| Thread.sleep(1000); |
| return "B"; |
| } |
| }); |
| |
| // take a |
| Object a = service.take().get(); |
| assertNotNull(a); |
| |
| // poll should not get it the first time |
| Object b = service.poll(); |
| assertNull(b); |
| |
| Thread.sleep(100); |
| |
| // and neither the 2nd time |
| b = service.poll(); |
| assertNull(b); |
| |
| // okay take it |
| b = service.take().get(); |
| |
| assertEquals("A", a); |
| assertEquals("B", b); |
| } |
| |
| } |