1 package org.apache.turbine.services.schedule; 2 3 /* 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 22 import org.apache.commons.logging.Log; 23 import org.apache.commons.logging.LogFactory; 24 import org.apache.turbine.modules.ScheduledJobLoader; 25 26 /** 27 * Wrapper for a <code>JobEntry</code> to actually perform the job's action. 28 * 29 * @author <a href="mailto:mbryson@mont.mindspring.com">Dave Bryson</a> 30 * @author <a href="mailto:dlr@finemaltcoding.com">Daniel Rall</a> 31 * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a> 32 * @author <a href="mailto:quintonm@bellsouth.net">Quinton McCombs</a> 33 * @version $Id: WorkerThread.java 534527 2007-05-02 16:10:59Z tv $ 34 */ 35 public class WorkerThread 36 implements Runnable 37 { 38 /** 39 * The <code>JobEntry</code> to run. 40 */ 41 private JobEntry je = null; 42 43 /** Logging */ 44 private static Log log = LogFactory.getLog(ScheduleService.LOGGER_NAME); 45 46 /** 47 * Creates a new worker to run the specified <code>JobEntry</code>. 48 * 49 * @param je The <code>JobEntry</code> to create a worker for. 50 */ 51 public WorkerThread(JobEntry je) 52 { 53 this.je = je; 54 } 55 56 /** 57 * Run the job. 58 */ 59 public void run() 60 { 61 if (je == null || je.isActive()) 62 { 63 return; 64 } 65 66 try 67 { 68 if (!je.isActive()) 69 { 70 je.setActive(true); 71 logStateChange("started"); 72 ScheduledJobLoader.getInstance().exec(je, je.getTask()); 73 } 74 } 75 catch (Exception e) 76 { 77 log.error("Error in WorkerThread for scheduled job #" + 78 je.getPrimaryKey() + ", task: " + je.getTask(), e); 79 } 80 finally 81 { 82 if (je.isActive()) 83 { 84 je.setActive(false); 85 logStateChange("completed"); 86 } 87 } 88 } 89 90 /** 91 * Macro to log <code>JobEntry</code> status information. 92 * 93 * @param state The new state of the <code>JobEntry</code>. 94 */ 95 private final void logStateChange(String state) 96 { 97 log.debug("Scheduled job #" + je.getPrimaryKey() + ' ' + state + 98 ", task: " + je.getTask()); 99 } 100 }