/// <summary>
/// Creates a <see cref="IObserver{WorkDoneProgressReport}" /> that will send all of its progress information to the same source.
/// The other side can cancel this, so the <see cref="CancellationToken" /> should be respected.
/// </summary>
public async Task <IWorkDoneObserver> Create(ProgressToken progressToken, WorkDoneProgressBegin begin,
Func <Exception, WorkDoneProgressEnd> onError = null, Func <WorkDoneProgressEnd> onComplete = null, CancellationToken cancellationToken = default)
{
if (!_supported)
{
return(NoopWorkDoneObserver.Instance);
}
if (_activeObservers.TryGetValue(progressToken, out var item))
{
return(item);
}
await _router.SendRequest(new WorkDoneProgressCreateParams()
{
Token = progressToken
}, cancellationToken);
onError ??= error => new WorkDoneProgressEnd()
{
Message = error.ToString()
};
onComplete ??= () => new WorkDoneProgressEnd();
var cts = new CancellationTokenSource();
var observer = new WorkDoneObserver(
progressToken,
_router,
_serializer,
begin,
onError,
onComplete,
cts.Token
);
_activeObservers.TryAdd(observer.WorkDoneToken, observer);
_activeObserverTokens.TryAdd(observer.WorkDoneToken, cts);
return(observer);
}
/// <summary>
/// Creates a <see cref="IWorkDoneObserver" /> that will send all of its progress information to the same source.
/// </summary>
public IWorkDoneObserver For(
IWorkDoneProgressParams request,
WorkDoneProgressBegin begin, Func <Exception, WorkDoneProgressEnd> onError = null,
Func <WorkDoneProgressEnd> onComplete = null
)
{
if (!IsSupported || request.WorkDoneToken == null)
{
return(NoopWorkDoneObserver.Instance);
}
if (_activeObservers.TryGetValue(request.WorkDoneToken, out var item))
{
return(item);
}
onError ??= error => new WorkDoneProgressEnd {
Message = error.ToString()
};
onComplete ??= () => new WorkDoneProgressEnd();
var cts = new CancellationTokenSource();
var observer = new WorkDoneObserver(
request.WorkDoneToken,
_router,
_serializer,
begin,
onError,
onComplete,
cts.Token
);
_activeObservers.TryAdd(observer.WorkDoneToken, observer);
_activeObserverTokens.TryAdd(observer.WorkDoneToken, cts);
return(observer);
}