| /** |
| * 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.itest.tx; |
| |
| import org.apache.camel.Exchange; |
| import org.apache.camel.Predicate; |
| import org.apache.camel.Processor; |
| import org.apache.camel.component.http.HttpOperationFailedException; |
| |
| /** |
| * Route that listen on a JMS queue and send a request/reply over http |
| * before returning a response. Is transacted. |
| * <p/> |
| * Notice we use the SpringRouteBuilder that supports transacted |
| * error handler. |
| * |
| * @version |
| */ |
| public class JmsToHttpWithOnExceptionAndNoTransactionErrorHandlerConfiguredRoute extends JmsToHttpRoute { |
| |
| private String noAccess = "<?xml version=\"1.0\"?><reply><status>Access denied</status></reply>"; |
| |
| public void configure() throws Exception { |
| // if its a 404 then regard it as handled |
| onException(HttpOperationFailedException.class).onWhen(new Predicate() { |
| public boolean matches(Exchange exchange) { |
| HttpOperationFailedException e = exchange.getException(HttpOperationFailedException.class); |
| return e != null && e.getStatusCode() == 404; |
| } |
| }).handled(true).to("mock:404").transform(constant(noAccess)); |
| |
| from("activemq:queue:data") |
| // must setup policy to indicate transacted route |
| .policy(required) |
| // send a request to http and get the response |
| .to("http://localhost:8080/sender") |
| // convert the response to String so we can work with it and avoid streams only be readable once |
| // as the http component will return data as a stream |
| .convertBodyTo(String.class) |
| // do a choice if the response is okay or not |
| .choice() |
| // do a xpath to compare if the status is NOT okay |
| .when().xpath("/reply/status != 'ok'") |
| // as this is based on an unit test we use mocks to verify how many times we did rollback |
| .to("mock:rollback") |
| // response is not okay so force a rollback |
| .rollback() |
| .otherwise() |
| // otherwise since its okay, the route ends and the response is sent back |
| // to the original caller |
| .end(); |
| |
| // this is our http router |
| from("jetty:http://localhost:8080/sender").process(new Processor() { |
| public void process(Exchange exchange) throws Exception { |
| // first hit is always a error code 500 to force the caller to retry |
| if (counter++ < 1) { |
| // simulate http error 500 |
| exchange.getOut().setHeader(Exchange.HTTP_RESPONSE_CODE, 500); |
| exchange.getOut().setBody("Damn some internal server error"); |
| return; |
| } |
| |
| String user = exchange.getIn().getHeader("user", String.class); |
| if ("unknown".equals(user)) { |
| // no page for a unknown user |
| exchange.getOut().setHeader(Exchange.HTTP_RESPONSE_CODE, 404); |
| exchange.getOut().setBody("Page does not exists"); |
| return; |
| } else if ("guest".equals(user)) { |
| // not okay for guest user |
| exchange.getOut().setBody(nok); |
| return; |
| } |
| |
| exchange.getOut().setBody(ok); |
| } |
| }); |
| } |
| |
| } |