Coverage Report - org.apache.camel.processor.Delayer
 
Classes in this File Line Coverage Branch Coverage Complexity
Delayer
74% 
100% 
0
 
 1  
 /**
 2  
  * Licensed to the Apache Software Foundation (ASF) under one or more
 3  
  * contributor license agreements.  See the NOTICE file distributed with
 4  
  * this work for additional information regarding copyright ownership.
 5  
  * The ASF licenses this file to You under the Apache License, Version 2.0
 6  
  * (the "License"); you may not use this file except in compliance with
 7  
  * the License.  You may obtain a copy of the License at
 8  
  *
 9  
  *      http://www.apache.org/licenses/LICENSE-2.0
 10  
  *
 11  
  * Unless required by applicable law or agreed to in writing, software
 12  
  * distributed under the License is distributed on an "AS IS" BASIS,
 13  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 14  
  * See the License for the specific language governing permissions and
 15  
  * limitations under the License.
 16  
  */
 17  
 package org.apache.camel.processor;
 18  
 
 19  
 import org.apache.camel.Exchange;
 20  
 import org.apache.camel.Expression;
 21  
 import org.apache.camel.Processor;
 22  
 import org.apache.camel.util.ExpressionHelper;
 23  
 
 24  
 /**
 25  
  * A <a href="http://activemq.apache.org/camel/delayer.html">Delayer</a> which
 26  
  * delays processing the exchange until the correct amount of time has elapsed
 27  
  * using an expression to determine the delivery time. <p/> For example if you
 28  
  * wish to delay JMS messages by 25 seconds from their publish time you could
 29  
  * create an instance of this class with the expression
 30  
  * <code>header("JMSTimestamp")</code> and a delay value of 25000L.
 31  
  * 
 32  
  * @version $Revision: 1.1 $
 33  
  */
 34  
 public class Delayer extends DelayProcessorSupport {
 35  
     private Expression<Exchange> timeExpression;
 36  
     private long delay;
 37  
 
 38  
     public Delayer(Processor processor, Expression<Exchange> timeExpression, long delay) {
 39  3
         super(processor);
 40  3
         this.timeExpression = timeExpression;
 41  3
         this.delay = delay;
 42  3
     }
 43  
 
 44  
     @Override
 45  
     public String toString() {
 46  3
         return "Delayer[on: " + timeExpression + " delay: " + delay + " to: " + getProcessor() + "]";
 47  
     }
 48  
 
 49  
     // Properties
 50  
     // -------------------------------------------------------------------------
 51  
     public long getDelay() {
 52  0
         return delay;
 53  
     }
 54  
 
 55  
     /**
 56  
      * Sets the delay from the publish time; which is typically the time from
 57  
      * the expression or the current system time if none is available
 58  
      */
 59  
     public void setDelay(long delay) {
 60  0
         this.delay = delay;
 61  0
     }
 62  
 
 63  
     // Implementation methods
 64  
     // -------------------------------------------------------------------------
 65  
 
 66  
     /**
 67  
      * Waits for an optional time period before continuing to process the
 68  
      * exchange
 69  
      */
 70  
     protected void delay(Exchange exchange) throws Exception {
 71  3
         long time = 0;
 72  3
         if (timeExpression != null) {
 73  3
             Long longValue = ExpressionHelper.evaluateAsType(timeExpression, exchange, Long.class);
 74  3
             if (longValue != null) {
 75  3
                 time = longValue.longValue();
 76  
             }
 77  
         }
 78  3
         if (time <= 0) {
 79  0
             time = defaultProcessTime(exchange);
 80  
         }
 81  
 
 82  3
         time += delay;
 83  
 
 84  3
         waitUntil(time, exchange);
 85  3
     }
 86  
 
 87  
     /**
 88  
      * A Strategy Method to allow derived implementations to decide the current
 89  
      * system time or some other default exchange property
 90  
      * 
 91  
      * @param exchange
 92  
      */
 93  
     protected long defaultProcessTime(Exchange exchange) {
 94  0
         return currentSystemTime();
 95  
     }
 96  
 
 97  
 }