001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.camel.component.seda; 018 019 import java.util.HashMap; 020 import java.util.Map; 021 import java.util.concurrent.BlockingQueue; 022 import java.util.concurrent.LinkedBlockingQueue; 023 024 import org.apache.camel.Endpoint; 025 import org.apache.camel.Exchange; 026 import org.apache.camel.impl.DefaultComponent; 027 028 /** 029 * An implementation of the <a href="http://camel.apache.org/seda.html">SEDA components</a> 030 * for asynchronous SEDA exchanges on a {@link BlockingQueue} within a CamelContext 031 * 032 * @version $Revision: 795369 $ 033 */ 034 public class SedaComponent extends DefaultComponent { 035 036 private final Map<String, BlockingQueue<Exchange>> queues = new HashMap<String, BlockingQueue<Exchange>>(); 037 038 public synchronized BlockingQueue<Exchange> createQueue(String uri, Map parameters) { 039 String key = getQueueKey(uri); 040 041 if (queues.containsKey(key)) { 042 return queues.get(key); 043 } 044 045 // create queue 046 int size = getAndRemoveParameter(parameters, "size", Integer.class, 1000); 047 BlockingQueue<Exchange> queue = new LinkedBlockingQueue<Exchange>(size); 048 queues.put(key, queue); 049 return queue; 050 } 051 052 @Override 053 protected Endpoint createEndpoint(String uri, String remaining, Map parameters) throws Exception { 054 int consumers = getAndRemoveParameter(parameters, "concurrentConsumers", Integer.class, 1); 055 SedaEndpoint answer = new SedaEndpoint(uri, this, createQueue(uri, parameters), consumers); 056 answer.configureProperties(parameters); 057 return answer; 058 } 059 060 protected String getQueueKey(String uri) { 061 if (uri.contains("?")) { 062 // strip parameters 063 uri = uri.substring(0, uri.indexOf('?')); 064 } 065 return uri; 066 } 067 068 @Override 069 protected void doStop() throws Exception { 070 queues.clear(); 071 super.doStop(); 072 } 073 074 }