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: 688957 $
033 */
034 public class TimerConsumer extends DefaultConsumer<Exchange> {
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 }
061
062 protected void configureTask(TimerTask task, Timer timer) {
063 if (endpoint.isFixedRate()) {
064 if (endpoint.getTime() != null) {
065 timer.scheduleAtFixedRate(task, endpoint.getTime(), endpoint.getPeriod());
066 } else {
067 timer.scheduleAtFixedRate(task, endpoint.getDelay(), endpoint.getPeriod());
068 }
069 } else {
070 if (endpoint.getTime() != null) {
071 if (endpoint.getPeriod() >= 0) {
072 timer.schedule(task, endpoint.getTime(), endpoint.getPeriod());
073 } else {
074 timer.schedule(task, endpoint.getTime());
075 }
076 } else {
077 if (endpoint.getPeriod() >= 0) {
078 timer.schedule(task, endpoint.getDelay(), endpoint.getPeriod());
079 } else {
080 timer.schedule(task, endpoint.getDelay());
081 }
082 }
083 }
084 }
085
086 protected void sendTimerExchange() {
087 Exchange exchange = endpoint.createExchange();
088 exchange.setProperty("org.apache.camel.timer.name", endpoint.getTimerName());
089 exchange.setProperty("org.apache.camel.timer.time", endpoint.getTime());
090 exchange.setProperty("org.apache.camel.timer.period", endpoint.getPeriod());
091
092 Date now = new Date();
093 exchange.setProperty("org.apache.camel.timer.firedTime", now);
094 // also set now on in header with same key as quaartz to be consistent
095 exchange.getIn().setHeader("firedTime", now);
096
097 try {
098 getProcessor().process(exchange);
099 } catch (Exception e) {
100 LOG.error("Caught: " + e, e);
101 }
102 }
103 }