| /** |
| * 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.interceptor; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| 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.ProcessorDefinition; |
| |
| /** |
| * @version |
| */ |
| public class TraceFormatterTest extends ContextTestSupport { |
| |
| private List<String> tracedBodies = new ArrayList<String>(); |
| |
| public void testSendingSomeMessagesBeingTraced() throws Exception { |
| MockEndpoint result = getMockEndpoint("mock:result"); |
| result.expectedBodiesReceived("Bye World"); |
| |
| MockEndpoint mock = getMockEndpoint("mock:traced"); |
| mock.expectedMessageCount(4); |
| |
| template.sendBodyAndHeader("direct:start", "Hello London", "to", "James"); |
| |
| assertMockEndpointsSatisfied(); |
| |
| // assert we received the correct bodies at the given time of interception |
| // and that the bodies haven't changed during the routing of the original |
| // exchange that changes its body over time (Hello London -> Bye World) |
| assertEquals("Hello London", tracedBodies.get(0)); |
| assertEquals("Hello World", tracedBodies.get(1)); |
| assertEquals("Goodday World", tracedBodies.get(2)); |
| assertEquals("Bye World", tracedBodies.get(3)); |
| } |
| |
| protected RouteBuilder createRouteBuilder() throws Exception { |
| return new RouteBuilder() { |
| public void configure() throws Exception { |
| // START SNIPPET: e1 |
| // we create a tracer where we want to use our own formatter instead of the default one |
| Tracer tracer = new Tracer(); |
| |
| // use our own formatter instead of the default one |
| MyTraceFormatter formatter = new MyTraceFormatter(); |
| tracer.setFormatter(formatter); |
| |
| // and we must remeber to add the tracer to Camel |
| getContext().addInterceptStrategy(tracer); |
| // END SNIPPET: e1 |
| |
| // this is only for unit testing to use mock for assertion |
| tracer.setDestinationUri("direct:traced"); |
| |
| from("direct:start") |
| .process(new MyProcessor("Hello World")) |
| .process(new MyProcessor("Goodday World")) |
| .process(new MyProcessor("Bye World")) |
| .to("mock:result"); |
| |
| from("direct:traced") |
| .process(new MyTraveAssertProcessor()) |
| .to("mock:traced"); |
| } |
| }; |
| } |
| |
| class MyProcessor implements Processor { |
| |
| private String msg; |
| |
| MyProcessor(String msg) { |
| this.msg = msg; |
| } |
| |
| public void process(Exchange exchange) throws Exception { |
| exchange.getIn().setBody(msg); |
| } |
| } |
| |
| class MyTraveAssertProcessor implements Processor { |
| |
| public void process(Exchange exchange) throws Exception { |
| // take a snapshot at current time for assertion later |
| // after mock assertions in unit test method |
| TraceEventMessage event = exchange.getIn().getBody(DefaultTraceEventMessage.class); |
| tracedBodies.add(new String(event.getBody())); |
| } |
| } |
| |
| // START SNIPPET: e2 |
| // here we have out own formatter where we can create the output we want for trace logs |
| // as this is a test we just create a simple string with * around the body |
| class MyTraceFormatter implements TraceFormatter { |
| |
| public Object format(TraceInterceptor interceptor, ProcessorDefinition<?> node, Exchange exchange) { |
| return "***" + exchange.getIn().getBody(String.class) + "***"; |
| } |
| } |
| // END SNIPPET: e2 |
| } |