| /** |
| * 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.exceptionpolicy; |
| |
| import java.util.Map; |
| |
| import org.apache.camel.CamelException; |
| import org.apache.camel.CamelExchangeException; |
| 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; |
| import org.apache.camel.model.OnExceptionDefinition; |
| |
| /** |
| * Unit test with a user plugged in exception policy to use instead of default. |
| */ |
| public class CustomExceptionPolicyStrategyTest extends ContextTestSupport { |
| |
| private static final String MESSAGE_INFO = "messageInfo"; |
| private static final String ERROR_QUEUE = "mock:error"; |
| |
| public static class MyPolicyException extends Exception { |
| } |
| |
| // START SNIPPET e2 |
| public static class MyPolicy implements ExceptionPolicyStrategy { |
| |
| public OnExceptionDefinition getExceptionPolicy(Map<ExceptionPolicyKey, OnExceptionDefinition> exceptionPolicices, |
| Exchange exchange, |
| Throwable exception) { |
| // This is just an example that always forces the exception type configured |
| // with MyPolicyException to win. |
| return exceptionPolicices.get(new ExceptionPolicyKey(null, MyPolicyException.class, null)); |
| } |
| } |
| // END SNIPPET e2 |
| |
| public void testCustomPolicy() throws Exception { |
| MockEndpoint mock = getMockEndpoint(ERROR_QUEUE); |
| mock.expectedMessageCount(1); |
| mock.expectedHeaderReceived(MESSAGE_INFO, "Damm my policy exception"); |
| |
| try { |
| template.sendBody("direct:a", "Hello Camel"); |
| } catch (Exception e) { |
| // expected |
| } |
| |
| mock.assertIsSatisfied(); |
| } |
| |
| protected RouteBuilder createRouteBuilder() throws Exception { |
| return new RouteBuilder() { |
| // START SNIPPET e1 |
| public void configure() throws Exception { |
| // configure the error handler to use my policy instead of the default from Camel |
| errorHandler(deadLetterChannel("mock:error").exceptionPolicyStrategy(new MyPolicy())); |
| |
| onException(MyPolicyException.class) |
| .maximumRedeliveries(1) |
| .setHeader(MESSAGE_INFO, constant("Damm my policy exception")) |
| .to(ERROR_QUEUE); |
| |
| onException(CamelException.class) |
| .maximumRedeliveries(3) |
| .setHeader(MESSAGE_INFO, constant("Damm a Camel exception")) |
| .to(ERROR_QUEUE); |
| // END SNIPPET e1 |
| |
| from("direct:a").process(new Processor() { |
| public void process(Exchange exchange) throws Exception { |
| String s = exchange.getIn().getBody(String.class); |
| if ("Hello Camel".equals(s)) { |
| throw new CamelExchangeException("Forced for testing", exchange); |
| } |
| exchange.getOut().setBody("Hello World"); |
| } |
| }).to("mock:result"); |
| } |
| }; |
| } |
| |
| } |