/// <summary>
/// Break Merging Operation manually
/// This method is supported by version 18.7 or greater
/// </summary>
public static void BreakMergingManually()
{
// Creating cancellation object
Cancellation cancellation = new Cancellation();
// cancelation after 5 seconds
cancellation.CancelAfter(5000);
// Load index
Index index = new Index(Utilities.indexPath);
index.Merge(cancellation);
}
public CancellableOperation(TimeSpan?timeout, CancellationToken cancellationToken)
{
Timeout = timeout;
Completion = new TaskCompletionSource <TResult>(TaskCreationOptions.RunContinuationsAsynchronously);
Completion.Task.ContinueWith(
(task, state) =>
{
var operation = (CancellableOperation <TResult>)state !;
operation.Dispose();
},
this,
cancellationToken,
TaskContinuationOptions.ExecuteSynchronously, // We need to execute synchronously to clean-up before anything else continues
TaskScheduler.Default);
Cancellation = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken);
if (Timeout != null && Timeout != System.Threading.Timeout.InfiniteTimeSpan && Timeout != TimeSpan.MaxValue)
{
Cancellation.CancelAfter(Timeout.Value);
}
CancellationRegistration = Cancellation.Token.Register(
(self) =>
{
var operation = (CancellableOperation <TResult>)self !;
if (cancellationToken.IsCancellationRequested)
{
// The operation was externally canceled before it timed out.
Dispose();
return;
}
operation.Completion.TrySetException(new TimeoutException($"The operation timed out after {Timeout}."));
operation.Cancellation?.Dispose();
operation.CancellationRegistration.Dispose();
},
this);
}