runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/execution/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 ThreadGroup 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 ThreadGroup("SLC Process #"
  32                                 + slcExecution.getUuid() + " thread group");
  33         }
  34
  35         public void run() {
  36                 log.info("\n##\n## Process SLC Execution " + slcProcess + "\n##\n");
  37
  38                 slcProcess.setStatus(SlcExecution.STATUS_RUNNING);
  39                 dispatchUpdateStatus(slcProcess, SlcExecution.STATUS_SCHEDULED,
  40                                 SlcExecution.STATUS_RUNNING);
  41
  42                 flowsToProcess.addAll(slcProcess.getRealizedFlows());
  43
  44                 while (flowsToProcess.size() > 0) {
  45                         RealizedFlow flow = flowsToProcess.remove(0);
  46                         ExecutionThread thread = new ExecutionThread(this, flow);
  47                         thread.start();
  48
  49                         synchronized (this) {
  50                                 try {
  51                                         wait();
  52                                 } catch (InterruptedException e) {
  53                                         // silent
  54                                 }
  55                         }
  56                 }
  57
  58                 if (hadAnError)
  59                         slcProcess.setStatus(SlcExecution.STATUS_ERROR);
  60                 else
  61                         slcProcess.setStatus(SlcExecution.STATUS_FINISHED);
  62                 dispatchUpdateStatus(slcProcess, SlcExecution.STATUS_RUNNING,
  63                                 slcProcess.getStatus());
  64         }
  65
  66         protected void dispatchUpdateStatus(SlcExecution slcExecution,
  67                         String oldStatus, String newStatus) {
  68                 for (Iterator<SlcExecutionNotifier> it = executionModulesManager
  69                                 .getSlcExecutionNotifiers().iterator(); it.hasNext();) {
  70                         it.next().updateStatus(slcExecution, oldStatus, newStatus);
  71                 }
  72         }
  73
  74         public void notifyError() {
  75                 hadAnError = true;
  76         }
  77
  78         public synchronized void flowCompleted() {
  79                 notifyAll();
  80         }
  81
  82         public SlcExecution getSlcProcess() {
  83                 return slcProcess;
  84         }
  85
  86         public ThreadGroup getProcessThreadGroup() {
  87                 return processThreadGroup;
  88         }
  89
  90         public AbstractExecutionModulesManager getExecutionModulesManager() {
  91                 return executionModulesManager;
  92         }
  93 }