Clover coverage report - Code Coverage for hivemind-examples release 1.0-rc-1
Coverage timestamp: Wed Aug 25 2004 13:06:52 EDT
file stats: LOC: 150   Methods: 11
NCLOC: 93   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
TaskExecutor.java 100% 100% 100% 100%
coverage
 1   
 //  Copyright 2004 The Apache Software Foundation
 2   
 //
 3   
 // Licensed under the Apache License, Version 2.0 (the "License");
 4   
 // you may not use this file except in compliance with the License.
 5   
 // You may obtain a copy of the License at
 6   
 //
 7   
 //     http://www.apache.org/licenses/LICENSE-2.0
 8   
 //
 9   
 // Unless required by applicable law or agreed to in writing, software
 10   
 // distributed under the License is distributed on an "AS IS" BASIS,
 11   
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 12   
 // See the License for the specific language governing permissions and
 13   
 // limitations under the License.
 14   
 
 15   
 package com.panorama.startup.impl;
 16   
 
 17   
 import java.util.Iterator;
 18   
 import java.util.List;
 19   
 
 20   
 import org.apache.commons.logging.Log;
 21   
 import org.apache.hivemind.ErrorHandler;
 22   
 import org.apache.hivemind.Messages;
 23   
 import org.apache.hivemind.order.Orderer;
 24   
 
 25   
 /**
 26   
  * A service that executes a series of {@link com.panorama.startup.impl.Task}s. Tasks have
 27   
  * an ordering based on pre- and post-requisites.
 28   
  *
 29   
  * @author Howard Lewis Ship
 30   
  */
 31   
 public class TaskExecutor implements Runnable
 32   
 {
 33   
     private ErrorHandler _errorHandler;
 34   
     private Log _log;
 35   
     private List _tasks;
 36   
     private Messages _messages;
 37   
 
 38   
     /**
 39   
      * Orders the {@link #setTasks(List) tasks} into an execution order, and executes
 40   
      * each in turn.  Logs the elapsed time, number of tasks, and the number of failures (if any).
 41   
      */
 42  2
     public void run()
 43   
     {
 44  2
         long startTime = System.currentTimeMillis();
 45   
 
 46  2
         Orderer orderer = new Orderer(_log, _errorHandler, task());
 47   
 
 48  2
         Iterator i = _tasks.iterator();
 49  2
         while (i.hasNext())
 50   
         {
 51  3
             Task t = (Task) i.next();
 52   
 
 53  3
             orderer.add(t, t.getId(), t.getAfter(), t.getBefore());
 54   
         }
 55   
 
 56  2
         List orderedTasks = orderer.getOrderedObjects();
 57   
 
 58  2
         int failures = 0;
 59   
 
 60  2
         i = orderedTasks.iterator();
 61  2
         while (i.hasNext())
 62   
         {
 63  3
             Task t = (Task) i.next();
 64   
 
 65  3
             if (!execute(t))
 66  1
                 failures++;
 67   
         }
 68   
 
 69  2
         long elapsedTime = System.currentTimeMillis() - startTime;
 70   
 
 71  2
         if (failures == 0)
 72  1
             _log.info(success(orderedTasks.size(), elapsedTime));
 73   
         else
 74  1
             _log.info(failure(failures, orderedTasks.size(), elapsedTime));
 75   
     }
 76   
 
 77   
     /**
 78   
      * Execute a single task.
 79   
      * 
 80   
      * @return true on success, false on failure
 81   
      */
 82  3
     private boolean execute(Task t)
 83   
     {
 84  3
         _log.info(executingTask(t));
 85   
 
 86  3
         try
 87   
         {
 88  3
             t.execute();
 89   
 
 90  2
             return true;
 91   
         }
 92   
         catch (Exception ex)
 93   
         {
 94  1
             _errorHandler.error(_log, exceptionInTask(t, ex), t.getLocation(), ex);
 95   
 
 96  1
             return false;
 97   
         }
 98   
     }
 99   
 
 100  2
     private String task()
 101   
     {
 102  2
         return _messages.getMessage("task");
 103   
     }
 104   
 
 105  3
     private String executingTask(Task t)
 106   
     {
 107  3
         return _messages.format("executing-task", t.getTitle());
 108   
     }
 109   
 
 110  1
     private String exceptionInTask(Task t, Throwable cause)
 111   
     {
 112  1
         return _messages.format("exception-in-task", t.getTitle(), cause);
 113   
     }
 114   
 
 115  1
     private String success(int count, long elapsedTimeMillis)
 116   
     {
 117  1
         return _messages.format("success", new Integer(count), new Long(elapsedTimeMillis));
 118   
     }
 119   
 
 120  1
     private String failure(int failureCount, int totalCount, long elapsedTimeMillis)
 121   
     {
 122  1
         return _messages.format(
 123   
             "failure",
 124   
             new Integer(failureCount),
 125   
             new Integer(totalCount),
 126   
             new Long(elapsedTimeMillis));
 127   
     }
 128   
 
 129  2
     public void setErrorHandler(ErrorHandler handler)
 130   
     {
 131  2
         _errorHandler = handler;
 132   
     }
 133   
 
 134  2
     public void setLog(Log log)
 135   
     {
 136  2
         _log = log;
 137   
     }
 138   
 
 139  2
     public void setMessages(Messages messages)
 140   
     {
 141  2
         _messages = messages;
 142   
     }
 143   
 
 144  2
     public void setTasks(List list)
 145   
     {
 146  2
         _tasks = list;
 147   
     }
 148   
 
 149   
 }
 150