ProcessThread.java

   1 package org.argeo.slc.core.execution;
   2
   3 import java.util.ArrayList;
   4 import java.util.Iterator;
   5 import java.util.List;
   6
   7 import org.apache.commons.logging.Log;
   8 import org.apache.commons.logging.LogFactory;
   9 import org.argeo.slc.process.RealizedFlow;
  10 import org.argeo.slc.process.SlcExecution;
  11 import org.argeo.slc.process.SlcExecutionNotifier;
  12
  13 /** Thread of the SLC Process, starting the sub executions. */
  14 public class ProcessThread extends Thread {
  15         private final static Log log = LogFactory.getLog(ProcessThread.class);
  16
  17         private final AbstractExecutionModulesManager executionModulesManager;
  18         private final SlcExecution slcProcess;
  19         private final ProcessThreadGroup processThreadGroup;
  20         private final List<RealizedFlow> flowsToProcess = new ArrayList<RealizedFlow>();
  21
  22         private Boolean hadAnError = false;
  23
  24         public ProcessThread(
  25                         AbstractExecutionModulesManager executionModulesManager,
  26                         SlcExecution slcExecution) {
  27                 super(executionModulesManager.getProcessesThreadGroup(),
  28                                 "SLC Process #" + slcExecution.getUuid());
  29                 this.executionModulesManager = executionModulesManager;
  30                 this.slcProcess = slcExecution;
  31                 processThreadGroup = new ProcessThreadGroup(this);
  32         }
  33
  34         public void run() {
  35                 log.info("\n##\n## Process SLC Execution " + slcProcess + "\n##\n");
  36
  37                 slcProcess.setStatus(SlcExecution.STATUS_RUNNING);
  38                 dispatchUpdateStatus(slcProcess, SlcExecution.STATUS_SCHEDULED,
  39                                 SlcExecution.STATUS_RUNNING);
  40
  41                 flowsToProcess.addAll(slcProcess.getRealizedFlows());
  42
  43                 while (flowsToProcess.size() > 0) {
  44                         RealizedFlow flow = flowsToProcess.remove(0);
  45                         ExecutionThread thread = new ExecutionThread(this, flow);
  46                         thread.start();
  47
  48                         synchronized (this) {
  49                                 try {
  50                                         wait();
  51                                 } catch (InterruptedException e) {
  52                                         // silent
  53                                 }
  54                         }
  55                 }
  56
  57                 if (hadAnError)
  58                         slcProcess.setStatus(SlcExecution.STATUS_ERROR);
  59                 else
  60                         slcProcess.setStatus(SlcExecution.STATUS_FINISHED);
  61                 dispatchUpdateStatus(slcProcess, SlcExecution.STATUS_RUNNING,
  62                                 slcProcess.getStatus());
  63         }
  64
  65         protected void dispatchUpdateStatus(SlcExecution slcExecution,
  66                         String oldStatus, String newStatus) {
  67                 for (Iterator<SlcExecutionNotifier> it = executionModulesManager
  68                                 .getSlcExecutionNotifiers().iterator(); it.hasNext();) {
  69                         it.next().updateStatus(slcExecution, oldStatus, newStatus);
  70                 }
  71         }
  72
  73         public void notifyError() {
  74                 hadAnError = true;
  75         }
  76
  77         public synchronized void flowCompleted() {
  78                 notifyAll();
  79         }
  80
  81         public SlcExecution getSlcProcess() {
  82                 return slcProcess;
  83         }
  84
  85         public ProcessThreadGroup getProcessThreadGroup() {
  86                 return processThreadGroup;
  87         }
  88
  89         public AbstractExecutionModulesManager getExecutionModulesManager() {
  90                 return executionModulesManager;
  91         }
  92 }