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

   1 package org.argeo.slc.core.execution.internal;
   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.core.execution.AbstractExecutionModulesManager;
  10 import org.argeo.slc.process.RealizedFlow;
  11 import org.argeo.slc.process.SlcExecution;
  12 import org.argeo.slc.process.SlcExecutionNotifier;
  13
  14 /** Thread of the SLC Process, starting the sub executions. */
  15 public class ProcessThread extends Thread {
  16         private final static Log log = LogFactory.getLog(ProcessThread.class);
  17
  18         private final AbstractExecutionModulesManager executionModulesManager;
  19         private final SlcExecution slcProcess;
  20         private final ThreadGroup processThreadGroup;
  21         private final List<RealizedFlow> flowsToProcess = new ArrayList<RealizedFlow>();
  22
  23         public ProcessThread(
  24                         AbstractExecutionModulesManager executionModulesManager,
  25                         SlcExecution slcExecution) {
  26                 super(executionModulesManager.getProcessesThreadGroup(),
  27                                 "SLC Process #" + slcExecution.getUuid());
  28                 this.executionModulesManager = executionModulesManager;
  29                 this.slcProcess = slcExecution;
  30                 processThreadGroup = new ThreadGroup("SLC Process #"
  31                                 + slcExecution.getUuid() + " thread group");
  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                 slcProcess.setStatus(SlcExecution.STATUS_FINISHED);
  58                 dispatchUpdateStatus(slcProcess, SlcExecution.STATUS_RUNNING,
  59                                 SlcExecution.STATUS_FINISHED);
  60         }
  61
  62         protected void dispatchUpdateStatus(SlcExecution slcExecution,
  63                         String oldStatus, String newStatus) {
  64                 for (Iterator<SlcExecutionNotifier> it = executionModulesManager
  65                                 .getSlcExecutionNotifiers().iterator(); it.hasNext();) {
  66                         it.next().updateStatus(slcExecution, oldStatus, newStatus);
  67                 }
  68         }
  69
  70         public synchronized void flowCompleted() {
  71                 notifyAll();
  72         }
  73
  74         public SlcExecution getSlcProcess() {
  75                 return slcProcess;
  76         }
  77
  78         public ThreadGroup getProcessThreadGroup() {
  79                 return processThreadGroup;
  80         }
  81
  82         public AbstractExecutionModulesManager getExecutionModulesManager() {
  83                 return executionModulesManager;
  84         }
  85 }