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.ArrayList; 020 import java.util.HashSet; 021 import java.util.List; 022 import java.util.Set; 023 import java.util.concurrent.BlockingQueue; 024 import java.util.concurrent.CopyOnWriteArraySet; 025 import java.util.concurrent.LinkedBlockingQueue; 026 027 import org.apache.camel.Component; 028 import org.apache.camel.Consumer; 029 import org.apache.camel.Exchange; 030 import org.apache.camel.Processor; 031 import org.apache.camel.Producer; 032 import org.apache.camel.impl.DefaultEndpoint; 033 import org.apache.camel.spi.BrowsableEndpoint; 034 035 /** 036 * An implementation of the <a 037 * href="http://camel.apache.org/queue.html">Queue components</a> for 038 * asynchronous SEDA exchanges on a {@link BlockingQueue} within a CamelContext 039 * 040 * @version $Revision: 748032 $ 041 */ 042 public class SedaEndpoint extends DefaultEndpoint implements BrowsableEndpoint { 043 private BlockingQueue<Exchange> queue; 044 private int size = 1000; 045 private int concurrentConsumers = 1; 046 private Set<SedaProducer> producers = new CopyOnWriteArraySet<SedaProducer>(); 047 private Set<SedaConsumer> consumers = new CopyOnWriteArraySet<SedaConsumer>(); 048 049 public SedaEndpoint() { 050 } 051 052 public SedaEndpoint(String endpointUri, Component component, BlockingQueue<Exchange> queue) { 053 this(endpointUri, component, queue, 1); 054 } 055 056 public SedaEndpoint(String endpointUri, Component component, BlockingQueue<Exchange> queue, int concurrentConsumers) { 057 super(endpointUri, component); 058 this.queue = queue; 059 this.concurrentConsumers = concurrentConsumers; 060 } 061 062 public SedaEndpoint(String endpointUri, BlockingQueue<Exchange> queue) { 063 this(endpointUri, queue, 1); 064 } 065 066 public SedaEndpoint(String endpointUri, BlockingQueue<Exchange> queue, int concurrentConsumers) { 067 super(endpointUri); 068 this.queue = queue; 069 this.concurrentConsumers = concurrentConsumers; 070 } 071 072 public Producer createProducer() throws Exception { 073 return new SedaProducer(this, getQueue()); 074 } 075 076 public Consumer createConsumer(Processor processor) throws Exception { 077 return new SedaConsumer(this, processor); 078 } 079 080 public synchronized BlockingQueue<Exchange> getQueue() { 081 if (queue == null) { 082 queue = new LinkedBlockingQueue<Exchange>(size); 083 } 084 return queue; 085 } 086 087 public void setQueue(BlockingQueue<Exchange> queue) { 088 this.queue = queue; 089 } 090 091 public int getSize() { 092 return size; 093 } 094 095 public void setSize(int size) { 096 this.size = size; 097 } 098 099 public void setConcurrentConsumers(int concurrentConsumers) { 100 this.concurrentConsumers = concurrentConsumers; 101 } 102 103 public int getConcurrentConsumers() { 104 return concurrentConsumers; 105 } 106 107 public boolean isSingleton() { 108 return true; 109 } 110 111 /** 112 * Returns the current pending exchanges 113 */ 114 public List<Exchange> getExchanges() { 115 return new ArrayList<Exchange>(getQueue()); 116 } 117 118 /** 119 * Returns the current active consumers on this endpoint 120 */ 121 public Set<SedaConsumer> getConsumers() { 122 return new HashSet<SedaConsumer>(consumers); 123 } 124 125 /** 126 * Returns the current active producers on this endpoint 127 */ 128 public Set<SedaProducer> getProducers() { 129 return new HashSet<SedaProducer>(producers); 130 } 131 132 void onStarted(SedaProducer producer) { 133 producers.add(producer); 134 } 135 136 void onStopped(SedaProducer producer) { 137 producers.remove(producer); 138 } 139 140 void onStarted(SedaConsumer consumer) { 141 consumers.add(consumer); 142 } 143 144 void onStopped(SedaConsumer consumer) { 145 consumers.remove(consumer); 146 } 147 }