| /** |
| * 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 org.apache.camel.ContextTestSupport; |
| import org.apache.camel.Endpoint; |
| import org.apache.camel.Exchange; |
| import org.apache.camel.ExchangePattern; |
| import org.apache.camel.LoggingLevel; |
| import org.apache.camel.Processor; |
| import org.apache.camel.builder.RouteBuilder; |
| import org.apache.camel.component.mock.MockEndpoint; |
| |
| /** |
| * @version |
| */ |
| public class DeadLetterChannelTest extends ContextTestSupport { |
| protected Endpoint startEndpoint; |
| protected MockEndpoint deadEndpoint; |
| protected MockEndpoint successEndpoint; |
| protected int failUntilAttempt = 2; |
| protected String body = "<hello>world!</hello>"; |
| |
| public void testFirstFewAttemptsFail() throws Exception { |
| successEndpoint.expectedBodiesReceived(body); |
| successEndpoint.message(0).header(Exchange.REDELIVERED).isEqualTo(true); |
| successEndpoint.message(0).header(Exchange.REDELIVERY_COUNTER).isEqualTo(1); |
| successEndpoint.message(0).header(Exchange.REDELIVERY_MAX_COUNTER).isEqualTo(2); |
| |
| deadEndpoint.expectedMessageCount(0); |
| |
| sendBody("direct:start", body); |
| |
| assertMockEndpointsSatisfied(); |
| } |
| |
| public void testLotsOfAttemptsFail() throws Exception { |
| failUntilAttempt = 5; |
| |
| deadEndpoint.expectedBodiesReceived(body); |
| // no traces of redelivery as the dead letter channel will handle the exception when moving the DLQ |
| deadEndpoint.message(0).header(Exchange.REDELIVERED).isNull(); |
| deadEndpoint.message(0).header(Exchange.REDELIVERY_COUNTER).isNull(); |
| deadEndpoint.message(0).header(Exchange.REDELIVERY_MAX_COUNTER).isNull(); |
| successEndpoint.expectedMessageCount(0); |
| |
| sendBody("direct:start", body); |
| |
| assertMockEndpointsSatisfied(); |
| |
| Throwable t = deadEndpoint.getExchanges().get(0).getProperty(Exchange.EXCEPTION_CAUGHT, Throwable.class); |
| assertNotNull("Should have been a cause property", t); |
| assertTrue(t instanceof RuntimeException); |
| assertEquals("Failed to process due to attempt: 3 being less than: 5", t.getMessage()); |
| |
| // must be InOnly |
| Exchange dead = deadEndpoint.getReceivedExchanges().get(0); |
| assertEquals(ExchangePattern.InOnly, dead.getPattern()); |
| } |
| |
| public void testLotsOfAttemptsFailInOut() throws Exception { |
| failUntilAttempt = 5; |
| |
| deadEndpoint.expectedBodiesReceived(body); |
| // no traces of redelivery as the dead letter channel will handle the exception when moving the DLQ |
| deadEndpoint.message(0).header(Exchange.REDELIVERED).isNull(); |
| deadEndpoint.message(0).header(Exchange.REDELIVERY_COUNTER).isNull(); |
| deadEndpoint.message(0).header(Exchange.REDELIVERY_MAX_COUNTER).isNull(); |
| successEndpoint.expectedMessageCount(0); |
| |
| template.requestBody("direct:start", body); |
| |
| assertMockEndpointsSatisfied(); |
| |
| Throwable t = deadEndpoint.getExchanges().get(0).getProperty(Exchange.EXCEPTION_CAUGHT, Throwable.class); |
| assertNotNull("Should have been a cause property", t); |
| assertTrue(t instanceof RuntimeException); |
| assertEquals("Failed to process due to attempt: 3 being less than: 5", t.getMessage()); |
| |
| // must be InOnly |
| Exchange dead = deadEndpoint.getReceivedExchanges().get(0); |
| assertEquals(ExchangePattern.InOnly, dead.getPattern()); |
| } |
| |
| @Override |
| protected void setUp() throws Exception { |
| super.setUp(); |
| |
| deadEndpoint = getMockEndpoint("mock:failed"); |
| successEndpoint = getMockEndpoint("mock:success"); |
| } |
| |
| protected RouteBuilder createRouteBuilder() { |
| final Processor processor = new Processor() { |
| public void process(Exchange exchange) { |
| Integer counter = exchange.getIn().getHeader(Exchange.REDELIVERY_COUNTER, Integer.class); |
| int attempt = (counter == null) ? 1 : counter + 1; |
| if (attempt < failUntilAttempt) { |
| throw new RuntimeException("Failed to process due to attempt: " + attempt |
| + " being less than: " + failUntilAttempt); |
| } |
| } |
| }; |
| |
| return new RouteBuilder() { |
| public void configure() { |
| from("direct:start").errorHandler( |
| deadLetterChannel("mock:failed").maximumRedeliveries(2) |
| .redeliveryDelay(50) |
| .loggingLevel(LoggingLevel.DEBUG) |
| |
| ).process(processor).to("mock:success"); |
| } |
| }; |
| } |
| |
| } |