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.timer; 018 019 import java.util.Timer; 020 import java.util.TimerTask; 021 022 import org.apache.camel.Exchange; 023 import org.apache.camel.Processor; 024 import org.apache.camel.impl.DefaultConsumer; 025 import org.apache.commons.logging.Log; 026 import org.apache.commons.logging.LogFactory; 027 028 /** 029 * The timer consumer. 030 * 031 * @version $Revision: 659782 $ 032 */ 033 public class TimerConsumer extends DefaultConsumer<Exchange> { 034 private static final transient Log LOG = LogFactory.getLog(TimerConsumer.class); 035 private final TimerEndpoint endpoint; 036 private TimerTask task; 037 038 public TimerConsumer(TimerEndpoint endpoint, Processor processor) { 039 super(endpoint, processor); 040 this.endpoint = endpoint; 041 } 042 043 @Override 044 protected void doStart() throws Exception { 045 task = new TimerTask() { 046 @Override 047 public void run() { 048 sendTimerExchange(); 049 } 050 }; 051 052 Timer timer = endpoint.getTimer(); 053 configureTask(task, timer); 054 } 055 056 @Override 057 protected void doStop() throws Exception { 058 task.cancel(); 059 } 060 061 protected void configureTask(TimerTask task, Timer timer) { 062 if (endpoint.isFixedRate()) { 063 if (endpoint.getTime() != null) { 064 timer.scheduleAtFixedRate(task, endpoint.getTime(), endpoint.getPeriod()); 065 } else { 066 timer.scheduleAtFixedRate(task, endpoint.getDelay(), endpoint.getPeriod()); 067 } 068 } else { 069 if (endpoint.getTime() != null) { 070 if (endpoint.getPeriod() >= 0) { 071 timer.schedule(task, endpoint.getTime(), endpoint.getPeriod()); 072 } else { 073 timer.schedule(task, endpoint.getTime()); 074 } 075 } else { 076 if (endpoint.getPeriod() >= 0) { 077 timer.schedule(task, endpoint.getDelay(), endpoint.getPeriod()); 078 } else { 079 timer.schedule(task, endpoint.getDelay()); 080 } 081 } 082 } 083 } 084 085 protected void sendTimerExchange() { 086 Exchange exchange = endpoint.createExchange(); 087 exchange.setProperty("org.apache.camel.timer.name", endpoint.getTimerName()); 088 exchange.setProperty("org.apache.camel.timer.time", endpoint.getTime()); 089 exchange.setProperty("org.apache.camel.timer.period", endpoint.getPeriod()); 090 try { 091 getProcessor().process(exchange); 092 } catch (Exception e) { 093 LOG.error("Caught: " + e, e); 094 } 095 } 096 }