@Override
public void run() {
final String methodName = "run";
Logfile.WriteCalled(logLevel, STR_ClassName, methodName);
/*
* Initialise state machine
*/
States lastState = States.Done;
States thisState = States.Init;
int nextUnit = this.labManagement.getFarmSize() - 1;
this.running = true;
/*
* Allow other threads to check the state of this thread
*/
Delay.MilliSeconds(500);
/*
* State machine loop
*/
try {
boolean success;
while (thisState != States.Done) {
/*
* Display message on each state change
*/
if (thisState != lastState) {
String logMessage =
String.format(STRLOG_StateChange_arg2, lastState.toString(), thisState.toString());
if (debugTrace == true) {
System.out.println(logMessage);
}
// Logfile.Write(logLevel, logMessage);
lastState = thisState;
}
switch (thisState) {
case Init:
/*
* Update lab status
*/
this.online = true;
this.labStatusMessage = StatusCodes.Ready.toString();
/*
* Revert any 'Running' experiments back to 'Waiting' so that they can be run again
*/
ArrayList<ExperimentQueueInfo> experimentQueueInfoList =
this.labManagement.getExperimentQueueDB().RetrieveByStatusCode(StatusCodes.Running);
if (experimentQueueInfoList != null) {
for (ExperimentQueueInfo experimentQueueInfo : experimentQueueInfoList) {
success =
this.labManagement
.getExperimentQueueDB()
.UpdateStatus(experimentQueueInfo.getId(), StatusCodes.Waiting);
/*
* Delete the database statistics entry for this experiment
*/
ExperimentStatisticsInfo experimentStatisticInfo =
this.labManagement
.getExperimentStatisticsDB()
.RetrieveByExperimentId(
experimentQueueInfo.getExperimentId(), experimentQueueInfo.getSbName());
if (experimentStatisticInfo != null) {
this.labManagement
.getExperimentStatisticsDB()
.Delete(experimentStatisticInfo.getId());
}
/*
* Delete the database results entry for this experiment
*/
ExperimentResultInfo experimentResultInfo =
this.labManagement
.getExperimentResultsDB()
.RetrieveByExperimentId(
experimentQueueInfo.getExperimentId(), experimentQueueInfo.getSbName());
if (experimentResultInfo != null) {
this.labManagement.getExperimentResultsDB().Delete(experimentResultInfo.getId());
}
String logMessage =
String.format(
STRLOG_RevertToWaiting_arg,
experimentQueueInfo.getExperimentId(),
experimentQueueInfo.getSbName(),
success);
Logfile.Write(logMessage);
}
}
/*
* Check if any experiments have not notified their ServiceBroker
*/
thisState = States.CheckNotified;
break;
case Idle:
/*
* Wait for an experiment to be submitted or timeout after a certain time. In either case, check
* the experiment queue. Maybe an experiment submission signal got missed and it didn't get seen
* here. It has happened before.
*/
if (this.labManagement.getSignalSubmitted().Wait(INT_DelayCheckQueueSeconds * 1000)
== true) {
/*
* Check if shutting down
*/
if (this.stopRunning == true) {
thisState = States.StopRunning;
break;
}
/*
* An experiment has been submitted, go check the queue
*/
this.labManagement.getSignalSubmitted().Reset();
thisState = States.CheckQueue;
break;
}
/*
* Timed out, go check some other things
*/
thisState = States.Maintenance;
break;
case CheckQueue:
/*
* Check the queue to see if there are any experiments waiting
*/
if (this.labManagement.getExperimentQueueDB().GetCountWaiting() > 0) {
thisState = States.StartEngine;
break;
}
thisState = States.Idle;
break;
case StartEngine:
/*
* Find the available experiment engine to run a waiting experiment
*/
boolean foundAvailable = false;
for (int i = 0; i < this.labManagement.getFarmSize(); i++) {
/*
* Determine the next experiment engine for running the experiment
*/
if (++nextUnit == this.labManagement.getFarmSize()) {
nextUnit = 0;
}
if (debugTrace == true) {
System.out.println(String.format("[nextUnit: %s]", nextUnit));
}
/*
* Get the experiment engine and check to see if it is online
*/
LabExperimentEngine labExperimentEngine = this.labExperimentEngines[nextUnit];
LabStatus labStatus = labExperimentEngine.GetLabStatus();
if (labStatus.isOnline() == false) {
/*
* This one is not online
*/
if (debugTrace == true) {
System.out.println(String.format("[nextUnit: %s is Offline]", nextUnit));
}
continue;
}
/*
* Determine if this experiment engine is currently running
*/
if (labExperimentEngine.isRunning() == false) {
/*
* Not running, try starting it
*/
if (labExperimentEngine.Start() == true) {
/*
* The available engine has been started, wait a bit before checking the queue
*/
foundAvailable = true;
Delay.MilliSeconds(1000);
break;
}
}
}
/*
* Check if there are any engines available
*/
if (foundAvailable == false) {
/*
* No engines available to start running
*/
thisState = States.Idle;
break;
}
thisState = States.CheckNotified;
break;
case CheckNotified:
/*
* Check if any experiments have not notified their ServiceBroker
*/
success = true;
ArrayList<ExperimentResultInfo> allNotNotified =
this.labManagement.getExperimentResultsDB().RetrieveAllNotNotified();
if (allNotNotified != null) {
Iterator iterator = allNotNotified.iterator();
while (iterator.hasNext() && success == true) {
ExperimentResultInfo experimentResultInfo = (ExperimentResultInfo) iterator.next();
success =
this.labExperimentEngines[0].NotifyServiceBroker(
experimentResultInfo.getExperimentId(), experimentResultInfo.getSbName());
}
}
thisState = States.CheckQueue;
break;
case Maintenance:
thisState = States.Idle;
break;
case StopRunning:
thisState = States.Done;
break;
}
}
} catch (Exception ex) {
Logfile.WriteError(ex.toString());
}
/*
* Thread is no longer running
*/
this.running = false;
Logfile.WriteCompleted(logLevel, STR_ClassName, methodName);
}
