/// <summary>
/// Performs IMRU iterations on update side
/// </summary>
/// <returns></returns>
protected override byte[] TaskBody(byte[] memento)
{
UpdateResult <TMapInput, TResult> updateResult = null;
try
{
updateResult = _updateTask.Initialize();
}
catch (Exception e)
{
HandleTaskAppException(e);
}
while (!_cancellationSource.IsCancellationRequested && updateResult.HasMapInput)
{
using (
var message = new MapInputWithControlMessage <TMapInput>(updateResult.MapInput,
MapControlMessage.AnotherRound))
{
_dataAndControlMessageSender.Send(message);
}
if (_invokeGc)
{
Logger.Log(Level.Verbose, "Calling Garbage Collector");
GC.Collect();
GC.WaitForPendingFinalizers();
}
var input = _dataReceiver.Reduce(_cancellationSource);
try
{
updateResult = _updateTask.Update(input);
if (updateResult.HasResult)
{
_resultHandler.HandleResult(updateResult.Result);
_done = true;
}
}
catch (Exception e)
{
HandleTaskAppException(e);
}
}
if (!_cancellationSource.IsCancellationRequested)
{
MapInputWithControlMessage <TMapInput> stopMessage =
new MapInputWithControlMessage <TMapInput>(MapControlMessage.Stop);
_dataAndControlMessageSender.Send(stopMessage);
}
if (_done)
{
return(ByteUtilities.StringToByteArrays(TaskManager.UpdateTaskCompleted));
}
return(null);
}
/// <summary>
/// Performs IMRU iterations on update side
/// </summary>
/// <param name="memento"></param>
/// <returns></returns>
public byte[] Call(byte[] memento)
{
var updateResult = _updateTask.Initialize();
int iterNo = 0;
while (updateResult.HasMapInput && !_taskCloseCoordinator.ShouldCloseTask())
{
iterNo++;
using (
var message = new MapInputWithControlMessage <TMapInput>(updateResult.MapInput,
MapControlMessage.AnotherRound))
{
_dataAndControlMessageSender.Send(message);
}
var input = _dataReceiver.Reduce();
if (_invokeGC)
{
Logger.Log(Level.Verbose, "Calling Garbage Collector");
GC.Collect();
GC.WaitForPendingFinalizers();
}
updateResult = _updateTask.Update(input);
if (updateResult.HasResult)
{
_resultHandler.HandleResult(updateResult.Result);
}
}
if (!_taskCloseCoordinator.ShouldCloseTask())
{
MapInputWithControlMessage <TMapInput> stopMessage =
new MapInputWithControlMessage <TMapInput>(MapControlMessage.Stop);
_dataAndControlMessageSender.Send(stopMessage);
}
_resultHandler.Dispose();
_taskCloseCoordinator.SignalTaskStopped();
return(null);
}
/// <summary>
/// Performs IMRU iterations on update side
/// </summary>
/// <param name="memento"></param>
/// <returns></returns>
public byte[] Call(byte[] memento)
{
var updateResult = _updateTask.Initialize();
int iterNo = 0;
try
{
while (updateResult.HasMapInput && !_cancellationSource.IsCancellationRequested)
{
iterNo++;
using (
var message = new MapInputWithControlMessage <TMapInput>(updateResult.MapInput,
MapControlMessage.AnotherRound))
{
_dataAndControlMessageSender.Send(message);
}
var input = _dataReceiver.Reduce(_cancellationSource);
if (_invokeGC)
{
Logger.Log(Level.Verbose, "Calling Garbage Collector");
GC.Collect();
GC.WaitForPendingFinalizers();
}
updateResult = _updateTask.Update(input);
if (updateResult.HasResult)
{
_resultHandler.HandleResult(updateResult.Result);
}
}
if (!_cancellationSource.IsCancellationRequested)
{
MapInputWithControlMessage <TMapInput> stopMessage =
new MapInputWithControlMessage <TMapInput>(MapControlMessage.Stop);
_dataAndControlMessageSender.Send(stopMessage);
}
}
catch (OperationCanceledException e)
{
Logger.Log(Level.Warning,
"Received OperationCanceledException in UpdateTaskHost with message: {0}.",
e.Message);
}
catch (IOException e)
{
Logger.Log(Level.Error, "Received IOException in UpdateTaskHost with message: {0}.", e.Message);
if (!_cancellationSource.IsCancellationRequested)
{
throw new IMRUTaskGroupCommunicationException(TaskManager.TaskGroupCommunicationError);
}
}
catch (TcpClientConnectionException e)
{
Logger.Log(Level.Error,
"Received TcpClientConnectionException in UpdateTaskHost with message: {0}.",
e.Message);
if (!_cancellationSource.IsCancellationRequested)
{
throw new IMRUTaskGroupCommunicationException(TaskManager.TaskGroupCommunicationError);
}
}
_resultHandler.Dispose();
_taskCloseCoordinator.SignalTaskStopped();
Logger.Log(Level.Info, "UpdateTaskHost returned with cancellation token {0}.", _cancellationSource.IsCancellationRequested);
return(null);
}
