OrderRouter.java

/**
 * 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 camelinaction;

import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.camel.builder.RouteBuilder;

/**
 * A set of routes that watches a directory for new orders, reads them, converts the order 
 * file into a JMS Message and then sends it to the JMS incomingOrders queue hosted 
 * on an embedded ActiveMQ broker instance.
 * 
 * From there a content-based router is used to send the order to either the
 * xmlOrders or csvOrders queue.
 *
 * @author janstey
 *
 */
public class OrderRouter extends RouteBuilder {

    @Override
    public void configure() {
        // load file orders from src/data into the JMS queue
        from("file:src/data?noop=true").to("jms:incomingOrders");

        // content-based router
        from("jms:incomingOrders")
        .choice()
            .when(header("CamelFileName").endsWith(".xml"))
                .to("jms:topic:xmlOrders")  
            .when(header("CamelFileName").endsWith(".csv"))
                .to("jms:topic:csvOrders");

        from("jms:topic:xmlOrders").to("jms:accounting");  
        from("jms:topic:xmlOrders").to("jms:production");  
        
        // test that our route is working
        from("jms:accounting").process(new Processor() {
            public void process(Exchange exchange) throws Exception {
                System.out.println("Accounting received order: "
                        + exchange.getIn().getHeader("CamelFileName"));  
            }
        });
        from("jms:production").process(new Processor() {
            public void process(Exchange exchange) throws Exception {
                System.out.println("Production received order: "
                        + exchange.getIn().getHeader("CamelFileName"));  
            }
        });
    }    
}