public static IDisposable Subscribe <T>(
this IObservable <T> observable,
Action <T> onNext,
System.Action onCompleted,
ILoggable loggable)
{
Ensure.That(observable, nameof(observable)).IsNotNull();
Ensure.That(onNext, nameof(onNext)).IsNotNull();
void OnNextLogError(T value)
{
try
{
onNext(value);
}
catch (Exception e)
{
loggable.LogError(e, "Exception occurred on onNext.");
}
}
void OnCompletedLogError()
{
try
{
onCompleted();
}
catch (Exception e)
{
loggable.LogError(e, "Exception occurred on onCompleted.");
}
}
void OnError(Exception e)
{
loggable.LogError(e, "Subscription terminated with an error.");
}
return(observable.Subscribe(OnNextLogError, OnError, OnCompletedLogError));
}
static ExitStatus Run(BinaryReader sourceReader, BinaryWriter destinationWriter, IPackerEngine packer,
PackerMode packerMode, int blockLength, int parallelismDegree, CancellationTokenSource token, ILoggable logger)
{
int blocksNumber = (int)Math.Ceiling((double)sourceReader.BaseStream.Length / blockLength);
Stopwatch watcher = new Stopwatch();
watcher.Start();
logger?.LogMessage("Parallel Packer started:");
logger?.LogMessage($" {packerMode.ToString().ToLower()}ing...");
try {
if (packerMode == PackerMode.Unpack) // we should save blockLength into the packed file because of blockLength parameter can be shanged
{
(blocksNumber, blockLength) = BinaryBlockReader.ReadBlockInfo(sourceReader);
}
var commonSourceConveyer = new LockableConveyer <Block>();
var commonDestinationConveyer = new LockableConveyer <Block>();
var workers = new List <IWorkable> {
WorkerFactory.CreateSourceWorker(sourceReader, blocksNumber, blockLength, packerMode, commonSourceConveyer, logger),
WorkerFactory.CreateDestinationWorker(destinationWriter, blocksNumber, blockLength, packerMode, commonDestinationConveyer, logger)
};
for (int index = 1; index <= parallelismDegree; ++index)
{
workers.Add(WorkerFactory.CreatePackerWorker(index, packerMode, packer, commonSourceConveyer, commonDestinationConveyer, logger));
}
WorkerFactory.DoWork(workers, token);
watcher.Stop();
if (token.IsCancellationRequested)
{
logger?.LogMessage($"{packerMode}ing has been cancelled by user '{Environment.UserName}' after {watcher.Elapsed}");
return(ExitStatus.CANCEL);
}
else
{
logger?.LogMessage($"{packerMode}ing has been finished successfully in {watcher.Elapsed}:");
logger?.LogMessage($" total blocks number: {blocksNumber}");
logger?.LogMessage($" raw block length: {blockLength}");
return(ExitStatus.SUCCESS);
}
} catch (Exception e) {
watcher.Stop();
logger?.LogError($"{packerMode}ing finished with ERRORS in {watcher.Elapsed}:", e);
return(ExitStatus.ERROR);
}
}