| /** |
| * 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.processor; |
| |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.Executors; |
| |
| import org.apache.camel.ContextTestSupport; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Processor; |
| import org.apache.camel.builder.RouteBuilder; |
| import org.apache.camel.component.mock.MockEndpoint; |
| |
| /** |
| * Unit test to verify that using DLC with redelivery and delays with blocking threads. |
| * As threads comes cheap these days in the modern JVM its no biggie. And for transactions |
| * you should use the same thread anyway. |
| * |
| * @version |
| */ |
| public class DeadLetterChannelRedeliverWithDelayBlockingTest extends ContextTestSupport { |
| |
| private static int counter; |
| |
| @SuppressWarnings("unchecked") |
| public void testRedeliverWithDelay() throws Exception { |
| MockEndpoint mock = getMockEndpoint("mock:result"); |
| |
| // we expect message 2 to arrive before 1 as message 1 is in trouble |
| // and must be redelivered 2 times before succeed |
| mock.expectedBodiesReceived("Message 2", "Message 1"); |
| mock.expectedHeaderReceived("foo", "bar"); |
| // the first is not redelivered |
| mock.message(0).header(Exchange.REDELIVERED).isNull(); |
| // but the 2nd is |
| mock.message(1).header(Exchange.REDELIVERED).isEqualTo(true); |
| |
| // use executors to simulate two different clients sending |
| // a request to Camel |
| Callable task1 = Executors.callable(new Runnable() { |
| public void run() { |
| template.sendBody("direct:start", "Message 1"); |
| } |
| }); |
| |
| Callable task2 = Executors.callable(new Runnable() { |
| public void run() { |
| template.sendBody("direct:start", "Message 2"); |
| } |
| }); |
| |
| Executors.newCachedThreadPool().submit(task1); |
| // give task 1 a head start, even though it comes last |
| Thread.sleep(100); |
| Executors.newCachedThreadPool().submit(task2); |
| |
| assertMockEndpointsSatisfied(); |
| } |
| |
| @Override |
| protected RouteBuilder createRouteBuilder() throws Exception { |
| return new RouteBuilder() { |
| @Override |
| public void configure() throws Exception { |
| errorHandler(deadLetterChannel("mock:dead").redeliveryDelay(250).maximumRedeliveries(3).logStackTrace(false)); |
| |
| from("direct:start") |
| .process(new Processor() { |
| public void process(Exchange exchange) throws Exception { |
| String body = exchange.getIn().getBody(String.class); |
| if ("Message 1".equals(body) && counter++ < 2) { |
| throw new IllegalArgumentException("Damn"); |
| } |
| exchange.getIn().setHeader("foo", "bar"); |
| } |
| }).to("mock:result"); |
| } |
| }; |
| } |
| } |