runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/execution/ExecutionThread.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.execution.ExecutionFlowDescriptor;
  10 import org.argeo.slc.process.RealizedFlow;
  11 import org.argeo.slc.process.SlcExecution;
  12 import org.argeo.slc.process.SlcExecutionNotifier;
  13 import org.argeo.slc.process.SlcExecutionStep;
  14
  15 /** Thread of a single execution */
  16 public class ExecutionThread extends Thread {
  17         private final static Log log = LogFactory.getLog(ExecutionThread.class);
  18
  19         private final RealizedFlow realizedFlow;
  20         private final ProcessThread processThread;
  21
  22         public ExecutionThread(ProcessThread processThread,
  23                         RealizedFlow realizedFlow) {
  24                 super(processThread.getProcessThreadGroup(), "Flow "
  25                                 + realizedFlow.getFlowDescriptor().getName());
  26                 this.realizedFlow = realizedFlow;
  27                 this.processThread = processThread;
  28         }
  29
  30         public void run() {
  31                 ExecutionFlowDescriptor executionFlowDescriptor = realizedFlow
  32                                 .getFlowDescriptor();
  33                 String flowName = executionFlowDescriptor.getName();
  34
  35                 dispatchAddStep(processThread.getSlcProcess(), new SlcExecutionStep(
  36                                 SlcExecutionStep.TYPE_PHASE_START, "Flow " + flowName));
  37
  38                 try {
  39                         processThread.getExecutionModulesManager().execute(realizedFlow);
  40                 } catch (Exception e) {
  41                         // TODO: re-throw exception ?
  42                         String msg = "Execution of flow " + flowName + " failed.";
  43                         log.error(msg, e);
  44                         dispatchAddStep(processThread.getSlcProcess(),
  45                                         new SlcExecutionStep(msg + " " + e.getMessage()));
  46                         processThread.notifyError();
  47                 } finally {
  48                         processThread.flowCompleted();
  49                         dispatchAddStep(processThread.getSlcProcess(),
  50                                         new SlcExecutionStep(SlcExecutionStep.TYPE_PHASE_END,
  51                                                         "Flow " + flowName));
  52                 }
  53         }
  54
  55         protected void dispatchAddStep(SlcExecution slcExecution,
  56                         SlcExecutionStep step) {
  57                 slcExecution.getSteps().add(step);
  58                 List<SlcExecutionStep> steps = new ArrayList<SlcExecutionStep>();
  59                 steps.add(step);
  60                 for (Iterator<SlcExecutionNotifier> it = processThread
  61                                 .getExecutionModulesManager().getSlcExecutionNotifiers()
  62                                 .iterator(); it.hasNext();) {
  63                         it.next().addSteps(slcExecution, steps);
  64                 }
  65         }
  66
  67 }