runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/execution/ProcessThread.java

   1 /*
   2  * Copyright (C) 2010 Mathieu Baudier <mbaudier@argeo.org>
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.argeo.slc.core.execution;
  18
  19 import java.util.ArrayList;
  20 import java.util.Iterator;
  21 import java.util.List;
  22
  23 import org.apache.commons.logging.Log;
  24 import org.apache.commons.logging.LogFactory;
  25 import org.argeo.slc.process.RealizedFlow;
  26 import org.argeo.slc.process.SlcExecution;
  27 import org.argeo.slc.process.SlcExecutionNotifier;
  28
  29 /** Thread of the SLC Process, starting the sub executions. */
  30 public class ProcessThread extends Thread {
  31         private final static Log log = LogFactory.getLog(ProcessThread.class);
  32
  33         private final AbstractExecutionModulesManager executionModulesManager;
  34         private final SlcExecution slcProcess;
  35         private final ProcessThreadGroup processThreadGroup;
  36         private final List<RealizedFlow> flowsToProcess = new ArrayList<RealizedFlow>();
  37
  38         private Boolean hadAnError = false;
  39
  40         public ProcessThread(
  41                         AbstractExecutionModulesManager executionModulesManager,
  42                         SlcExecution slcExecution) {
  43                 super(executionModulesManager.getProcessesThreadGroup(),
  44                                 "SLC Process #" + slcExecution.getUuid());
  45                 this.executionModulesManager = executionModulesManager;
  46                 this.slcProcess = slcExecution;
  47                 processThreadGroup = new ProcessThreadGroup(this);
  48         }
  49
  50         public void run() {
  51                 log.info("\n##\n## Process SLC Execution " + slcProcess + "\n##\n");
  52
  53                 slcProcess.setStatus(SlcExecution.STATUS_RUNNING);
  54                 dispatchUpdateStatus(slcProcess, SlcExecution.STATUS_SCHEDULED,
  55                                 SlcExecution.STATUS_RUNNING);
  56
  57                 flowsToProcess.addAll(slcProcess.getRealizedFlows());
  58
  59                 while (flowsToProcess.size() > 0) {
  60                         RealizedFlow flow = flowsToProcess.remove(0);
  61                         ExecutionThread thread = new ExecutionThread(this, flow);
  62                         thread.start();
  63
  64                         synchronized (this) {
  65                                 try {
  66                                         wait();
  67                                 } catch (InterruptedException e) {
  68                                         // silent
  69                                 }
  70                         }
  71                 }
  72
  73                 if (hadAnError)
  74                         slcProcess.setStatus(SlcExecution.STATUS_ERROR);
  75                 else
  76                         slcProcess.setStatus(SlcExecution.STATUS_FINISHED);
  77                 dispatchUpdateStatus(slcProcess, SlcExecution.STATUS_RUNNING,
  78                                 slcProcess.getStatus());
  79         }
  80
  81         protected void dispatchUpdateStatus(SlcExecution slcExecution,
  82                         String oldStatus, String newStatus) {
  83                 for (Iterator<SlcExecutionNotifier> it = executionModulesManager
  84                                 .getSlcExecutionNotifiers().iterator(); it.hasNext();) {
  85                         it.next().updateStatus(slcExecution, oldStatus, newStatus);
  86                 }
  87         }
  88
  89         public void notifyError() {
  90                 hadAnError = true;
  91         }
  92
  93         public synchronized void flowCompleted() {
  94                 notifyAll();
  95         }
  96
  97         public SlcExecution getSlcProcess() {
  98                 return slcProcess;
  99         }
 100
 101         public ProcessThreadGroup getProcessThreadGroup() {
 102                 return processThreadGroup;
 103         }
 104
 105         public AbstractExecutionModulesManager getExecutionModulesManager() {
 106                 return executionModulesManager;
 107         }
 108 }