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         public ProcessThread(
  23                         AbstractExecutionModulesManager executionModulesManager,
  24                         SlcExecution slcExecution) {
  25                 super(executionModulesManager.getProcessesThreadGroup(),
  26                                 "SLC Process #" + slcExecution.getUuid());
  27                 this.executionModulesManager = executionModulesManager;
  28                 this.slcProcess = slcExecution;
  29                 processThreadGroup = new ThreadGroup("SLC Process #"
  30                                 + slcExecution.getUuid() + " thread group");
  31         }
  32
  33         public void run() {
  34                 log.info("\n##\n## Process SLC Execution " + slcProcess + "\n##\n");
  35
  36                 slcProcess.setStatus(SlcExecution.STATUS_RUNNING);
  37                 dispatchUpdateStatus(slcProcess, SlcExecution.STATUS_SCHEDULED,
  38                                 SlcExecution.STATUS_RUNNING);
  39
  40                 flowsToProcess.addAll(slcProcess.getRealizedFlows());
  41
  42                 while (flowsToProcess.size() > 0) {
  43                         RealizedFlow flow = flowsToProcess.remove(0);
  44                         ExecutionThread thread = new ExecutionThread(this, flow);
  45                         thread.start();
  46
  47                         synchronized (this) {
  48                                 try {
  49                                         wait();
  50                                 } catch (InterruptedException e) {
  51                                         // silent
  52                                 }
  53                         }
  54                 }
  55
  56                 slcProcess.setStatus(SlcExecution.STATUS_FINISHED);
  57                 dispatchUpdateStatus(slcProcess, SlcExecution.STATUS_RUNNING,
  58                                 SlcExecution.STATUS_FINISHED);
  59         }
  60
  61         protected void dispatchUpdateStatus(SlcExecution slcExecution,
  62                         String oldStatus, String newStatus) {
  63                 for (Iterator<SlcExecutionNotifier> it = executionModulesManager
  64                                 .getSlcExecutionNotifiers().iterator(); it.hasNext();) {
  65                         it.next().updateStatus(slcExecution, oldStatus, newStatus);
  66                 }
  67         }
  68
  69         public synchronized void flowCompleted() {
  70                 notifyAll();
  71         }
  72
  73         public SlcExecution getSlcProcess() {
  74                 return slcProcess;
  75         }
  76
  77         public ThreadGroup getProcessThreadGroup() {
  78                 return processThreadGroup;
  79         }
  80
  81         public AbstractExecutionModulesManager getExecutionModulesManager() {
  82                 return executionModulesManager;
  83         }
  84 }