public SyncAction(OperationQueue operationQueue, IMobileServiceLocalStore store, CancellationToken cancellationToken)
{
this.OperationQueue = operationQueue;
this.Store = store;
this.TaskSource = new TaskCompletionSource <object>();
this.CancellationToken = cancellationToken;
cancellationToken.Register(() => TaskSource.TrySetCanceled());
}
protected override Task Close()
{
_lifetime.TrySetCanceled();
return(base.Close());
}
private void CancelTask()
{
Log.Debug($"Propagating cancellation request to task {TaskSource.Task.Id}.");
TaskSource.TrySetCanceled();
}
protected override Task Close()
{
_taskSource.TrySetCanceled();
return(base.Close());
}
public static bool TrySetFromTask <T>(this TaskSource <T> target, Task <T> source, CancellationToken candidateToken)
=> source.IsCanceled
? target.TrySetCanceled(candidateToken.IsCancellationRequested ? candidateToken : CancellationToken.None)
: source.Exception != null
? target.TrySetException(source.Exception)
: target.TrySetResult(source.Result);
