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 }