public MonitoredExertDispatcher(
Exertion exertion, Set<Context> sharedContext, boolean isSpawned, Provider provider)
throws Exception {
super(exertion, sharedContext, isSpawned, provider, null);
if (sessionMonitor == null)
sessionMonitor =
(MonitoringManagement)
ProviderAccessor.getProvider(
Sorcer.getActualName(Sorcer.getExertMonitorName()), MonitoringManagement.class);
if (lrm == null) lrm = new LeaseRenewalManager();
// get the exertion with the monitor session
this.xrt = (ServiceExertion) register(exertion);
// make the monitor session of this exertion active
logger.log(Level.FINER, "Dispatching task now: " + xrt.getName());
MonitoringSession session = (MonitoringSession) (xrt.getMonitorSession());
session.init((Monitorable) provider.getProxy(), LEASE_RENEWAL_PERIOD, DEFAULT_TIMEOUT_PERIOD);
lrm.renewUntil(session.getLease(), Lease.ANY, null);
dThread = new DispatchThread();
try {
dThread.start();
dThread.join();
} catch (InterruptedException ie) {
ie.printStackTrace();
state = FAILED;
}
}
private Exertion register(Exertion exertion) throws Exception {
RemoteEventListener l = (RemoteEventListener) (new ResultListener().export());
ServiceExertion registeredExertion =
(ServiceExertion) (sessionMonitor.register(l, exertion, LEASE_RENEWAL_PERIOD));
MonitoringSession session = (MonitoringSession) (registeredExertion.getMonitorSession());
logger.info("Session for the exertion =" + session);
logger.info(
"Lease to be renewed for duration ="
+ (session.getLease().getExpiration() - System.currentTimeMillis()));
lrm.renewUntil(session.getLease(), Lease.ANY, null);
return registeredExertion;
}
// Made private so that other classes just calls execExertion and not
// execTask
private void execTask(NetTask task) throws ExertionException, SignatureException {
logger.log(Level.INFO, "start executing task");
try {
Service provider =
ProviderAccessor.getProvider(
task.getProcessSignature().getProviderName(), task.getServiceType());
logger.log(Level.INFO, "got a provider:" + provider);
if (provider == null) {
String msg = null;
// get the PROCESS Method and grab provider name + interface
NetSignature method = (NetSignature) task.getProcessSignature();
msg =
"No Provider available. Provider Name: "
+ method.getProviderName()
+ " Provider interface: "
+ method.getServiceType();
System.err.println(msg);
throw new ExertionException(msg, task);
} else {
// setTaskProvider(task, provider.getProviderName());
logger.log(Level.INFO, "Servicing task now ..............");
MonitoringSession session = (MonitoringSession) (task.getMonitorSession());
session.init((Monitorable) provider, LEASE_RENEWAL_PERIOD, DEFAULT_TIMEOUT_PERIOD);
lrm.renewUntil(session.getLease(), Lease.ANY, null);
task.setService(provider);
provider.service(task, null);
}
} catch (RemoteException re) {
re.printStackTrace();
logger.log(Level.SEVERE, "dispatcher execution failed for task: " + task);
throw new ExertionException("Remote Exception while executing task");
} catch (MonitorException mse) {
mse.printStackTrace();
logger.log(Level.SEVERE, "dispatcher execution failed for task: " + task);
throw new ExertionException("Remote Exception while executing task");
} catch (TransactionException te) {
te.printStackTrace();
logger.log(Level.SEVERE, "dispatcher execution failed for task: " + task);
throw new ExertionException("Remote Exception while executing task");
}
}