private async Task DispatchAsync(
TKey resolvedKey,
TaskCompletionSource <TValue> promise)
{
var resolvedKeys = new TKey[] { resolvedKey };
Activity activity = DispatchingDiagnostics
.StartBatching(resolvedKeys);
IReadOnlyList <IResult <TValue> > results =
await Fetch(resolvedKeys).ConfigureAwait(false);
if (results.Count == 1)
{
SetSingleResult(promise, resolvedKey, results.First());
}
else
{
Exception error = Errors.CreateKeysAndValuesMustMatch(1,
results.Count);
DispatchingDiagnostics.RecordError(resolvedKey, error);
promise.SetException(error);
}
DispatchingDiagnostics.StopBatching(activity, resolvedKeys,
results);
}
private async Task FetchInternalAsync(
IDictionary <TKey, TaskCompletionSource <TValue> > bufferedPromises,
IReadOnlyList <TKey> resolvedKeys)
{
Activity activity = DispatchingDiagnostics
.StartBatching(resolvedKeys);
IReadOnlyList <IResult <TValue> > results =
await Fetch(resolvedKeys).ConfigureAwait(false);
SetBatchResults(bufferedPromises, resolvedKeys, results);
DispatchingDiagnostics.StopBatching(activity, resolvedKeys,
results);
}