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.Date; 020 import java.util.Timer; 021 import java.util.TimerTask; 022 023 import org.apache.camel.Exchange; 024 import org.apache.camel.Processor; 025 import org.apache.camel.impl.DefaultConsumer; 026 import org.apache.commons.logging.Log; 027 import org.apache.commons.logging.LogFactory; 028 029 /** 030 * The timer consumer. 031 * 032 * @version $Revision: 747062 $ 033 */ 034 public class TimerConsumer extends DefaultConsumer { 035 private static final transient Log LOG = LogFactory.getLog(TimerConsumer.class); 036 private final TimerEndpoint endpoint; 037 private TimerTask task; 038 039 public TimerConsumer(TimerEndpoint endpoint, Processor processor) { 040 super(endpoint, processor); 041 this.endpoint = endpoint; 042 } 043 044 @Override 045 protected void doStart() throws Exception { 046 task = new TimerTask() { 047 @Override 048 public void run() { 049 sendTimerExchange(); 050 } 051 }; 052 053 Timer timer = endpoint.getTimer(); 054 configureTask(task, timer); 055 } 056 057 @Override 058 protected void doStop() throws Exception { 059 task.cancel(); 060 task = null; 061 } 062 063 protected void configureTask(TimerTask task, Timer timer) { 064 if (endpoint.isFixedRate()) { 065 if (endpoint.getTime() != null) { 066 timer.scheduleAtFixedRate(task, endpoint.getTime(), endpoint.getPeriod()); 067 } else { 068 timer.scheduleAtFixedRate(task, endpoint.getDelay(), endpoint.getPeriod()); 069 } 070 } else { 071 if (endpoint.getTime() != null) { 072 if (endpoint.getPeriod() >= 0) { 073 timer.schedule(task, endpoint.getTime(), endpoint.getPeriod()); 074 } else { 075 timer.schedule(task, endpoint.getTime()); 076 } 077 } else { 078 if (endpoint.getPeriod() >= 0) { 079 timer.schedule(task, endpoint.getDelay(), endpoint.getPeriod()); 080 } else { 081 timer.schedule(task, endpoint.getDelay()); 082 } 083 } 084 } 085 } 086 087 protected void sendTimerExchange() { 088 Exchange exchange = endpoint.createExchange(); 089 exchange.setProperty(Exchange.TIMER_NAME, endpoint.getTimerName()); 090 exchange.setProperty(Exchange.TIMER_TIME, endpoint.getTime()); 091 exchange.setProperty(Exchange.TIMER_PERIOD, endpoint.getPeriod()); 092 093 Date now = new Date(); 094 exchange.setProperty(Exchange.TIMER_FIRED_TIME, now); 095 // also set now on in header with same key as quaartz to be consistent 096 exchange.getIn().setHeader("firedTime", now); 097 098 if (LOG.isTraceEnabled()) { 099 LOG.trace("Timer " + endpoint.getTimerName() + " is firing"); 100 } 101 try { 102 getProcessor().process(exchange); 103 } catch (Exception e) { 104 handleException(e); 105 } 106 } 107 }