| /** |
| * 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.impl; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.Future; |
| |
| import org.apache.camel.ContextTestSupport; |
| import org.apache.camel.Endpoint; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Producer; |
| import org.apache.camel.ServicePoolAware; |
| |
| /** |
| * @version |
| */ |
| public class ServicePoolTest extends ContextTestSupport { |
| |
| private static boolean cleanup; |
| private DefaultProducerServicePool pool; |
| |
| private class MyProducer extends DefaultProducer implements ServicePoolAware { |
| |
| private boolean start; |
| private boolean stop; |
| |
| public MyProducer(Endpoint endpoint) throws Exception { |
| super(endpoint); |
| start(); |
| } |
| |
| public void process(Exchange exchange) throws Exception { |
| // noop |
| } |
| |
| @Override |
| protected void doStart() throws Exception { |
| super.doStart(); |
| assertEquals("Should not be started twice", false, start); |
| start = true; |
| } |
| |
| @Override |
| protected void doStop() throws Exception { |
| super.doStop(); |
| assertEquals("Should not be stopped twice", false, stop); |
| stop = true; |
| cleanup = true; |
| } |
| } |
| |
| @Override |
| protected void setUp() throws Exception { |
| super.setUp(); |
| pool = new DefaultProducerServicePool(5); |
| pool.start(); |
| } |
| |
| @Override |
| protected void tearDown() throws Exception { |
| pool.stop(); |
| super.tearDown(); |
| assertEquals("Should have stopped the produers", true, cleanup); |
| } |
| |
| public void testSingleEntry() throws Exception { |
| Endpoint endpoint = context.getEndpoint("mock:foo"); |
| |
| assertNull(pool.acquire(endpoint)); |
| assertEquals(0, pool.size()); |
| |
| Producer producer = new MyProducer(endpoint); |
| producer = pool.addAndAcquire(endpoint, producer); |
| assertEquals(0, pool.size()); |
| |
| pool.release(endpoint, producer); |
| assertEquals(1, pool.size()); |
| |
| producer = pool.acquire(endpoint); |
| assertNotNull(producer); |
| assertEquals(0, pool.size()); |
| |
| pool.release(endpoint, producer); |
| assertEquals(1, pool.size()); |
| } |
| |
| public void testTwoEntries() throws Exception { |
| Endpoint endpoint = context.getEndpoint("mock:foo"); |
| |
| Producer producer1 = new MyProducer(endpoint); |
| Producer producer2 = new MyProducer(endpoint); |
| |
| producer1 = pool.addAndAcquire(endpoint, producer1); |
| producer2 = pool.addAndAcquire(endpoint, producer2); |
| |
| assertEquals(0, pool.size()); |
| pool.release(endpoint, producer1); |
| assertEquals(1, pool.size()); |
| pool.release(endpoint, producer2); |
| assertEquals(2, pool.size()); |
| } |
| |
| public void testThreeEntries() throws Exception { |
| Endpoint endpoint = context.getEndpoint("mock:foo"); |
| |
| Producer producer1 = new MyProducer(endpoint); |
| Producer producer2 = new MyProducer(endpoint); |
| Producer producer3 = new MyProducer(endpoint); |
| |
| producer1 = pool.addAndAcquire(endpoint, producer1); |
| producer2 = pool.addAndAcquire(endpoint, producer2); |
| producer3 = pool.addAndAcquire(endpoint, producer3); |
| |
| assertEquals(0, pool.size()); |
| pool.release(endpoint, producer1); |
| assertEquals(1, pool.size()); |
| pool.release(endpoint, producer2); |
| assertEquals(2, pool.size()); |
| pool.release(endpoint, producer3); |
| assertEquals(3, pool.size()); |
| } |
| |
| public void testAcquireAddRelease() throws Exception { |
| Endpoint endpoint = context.getEndpoint("mock:foo"); |
| for (int i = 0; i < 10; i++) { |
| Producer producer = pool.acquire(endpoint); |
| if (producer == null) { |
| producer = pool.addAndAcquire(endpoint, new MyProducer(endpoint)); |
| } |
| assertNotNull(producer); |
| pool.release(endpoint, producer); |
| } |
| } |
| |
| public void testAcquireAdd() throws Exception { |
| Endpoint endpoint = context.getEndpoint("mock:foo"); |
| List<Producer> producers = new ArrayList<Producer>(); |
| |
| for (int i = 0; i < 5; i++) { |
| Producer producer = pool.acquire(endpoint); |
| if (producer == null) { |
| producer = pool.addAndAcquire(endpoint, new MyProducer(endpoint)); |
| } |
| assertNotNull(producer); |
| producers.add(producer); |
| } |
| |
| // release afterwards |
| for (Producer producer : producers) { |
| pool.release(endpoint, producer); |
| } |
| } |
| |
| public void testAcquireAddQueueFull() throws Exception { |
| Endpoint endpoint = context.getEndpoint("mock:foo"); |
| |
| for (int i = 0; i < 5; i++) { |
| Producer producer = pool.addAndAcquire(endpoint, new MyProducer(endpoint)); |
| pool.release(endpoint, producer); |
| } |
| |
| // when adding a 6 we get a queue full |
| try { |
| pool.addAndAcquire(endpoint, new MyProducer(endpoint)); |
| fail("Should have thrown an exception"); |
| } catch (IllegalStateException e) { |
| assertEquals("Queue full", e.getMessage()); |
| } |
| |
| assertEquals(5, pool.size()); |
| } |
| |
| public void testConcurrent() throws Exception { |
| final Endpoint endpoint = context.getEndpoint("mock:foo"); |
| |
| ExecutorService executor = Executors.newFixedThreadPool(5); |
| List<Future> response = new ArrayList<Future>(); |
| for (int i = 0; i < 5; i++) { |
| final int index = i; |
| Future out = executor.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| Producer producer = pool.acquire(endpoint); |
| if (producer == null) { |
| producer = pool.addAndAcquire(endpoint, new MyProducer(endpoint)); |
| } |
| assertNotNull(producer); |
| pool.release(endpoint, producer); |
| return index; |
| } |
| }); |
| |
| response.add(out); |
| } |
| |
| for (int i = 0; i < 5; i++) { |
| assertEquals(i, response.get(i).get()); |
| } |
| } |
| |
| public void testConcurrentStress() throws Exception { |
| final Endpoint endpoint = context.getEndpoint("mock:foo"); |
| |
| ExecutorService executor = Executors.newFixedThreadPool(5); |
| List<Future> response = new ArrayList<Future>(); |
| for (int i = 0; i < 5; i++) { |
| final int index = i; |
| Future out = executor.submit(new Callable<Object>() { |
| public Object call() throws Exception { |
| for (int j = 0; j < 100; j++) { |
| Producer producer = pool.acquire(endpoint); |
| if (producer == null) { |
| producer = pool.addAndAcquire(endpoint, new MyProducer(endpoint)); |
| } |
| assertNotNull(producer); |
| pool.release(endpoint, producer); |
| } |
| return index; |
| } |
| }); |
| |
| response.add(out); |
| } |
| |
| for (int i = 0; i < 5; i++) { |
| assertEquals(i, response.get(i).get()); |
| } |
| } |
| |
| } |