/// <summary>
/// Returns all the selectors for a given <paramref name="weakFingerprint"/>.
/// </summary>
public static async Task <Result <Selector[]> > GetAllSelectorsAsync(
this IReadOnlyMemoizationSessionWithLevelSelectors session,
Context context,
Fingerprint weakFingerprint,
CancellationToken cts)
{
var selectors = new List <Selector>();
int level = 0;
while (true)
{
var levelResult = await session.GetLevelSelectorsAsync(context, weakFingerprint, cts, level);
if (!levelResult)
{
return(Result.FromError <Selector[]>(levelResult));
}
selectors.AddRange(levelResult.Value.Selectors);
level++;
if (!levelResult.Value.HasMore)
{
break;
}
}
return(Result.Success(selectors.ToArray()));
}
/// <summary>
/// Enumerate known selectors for a given weak fingerprint.
/// </summary>
public static IAsyncEnumerable <GetSelectorResult> GetSelectorsAsAsyncEnumerable(
this IReadOnlyMemoizationSessionWithLevelSelectors session,
Context context,
Fingerprint weakFingerprint,
CancellationToken cts,
UrgencyHint urgencyHint = UrgencyHint.Nominal)
{
// This method is a backward compatible method that was used before the implementation was moved to use levels explicitly.
return(AsyncEnumerable.Range(0, int.MaxValue)
.SelectMany(level => GetLevelSelectorsEnumerableAsync(session, context, weakFingerprint, cts, level))
.StopAfter(item => item.Succeeded && item.Value.HasMore)
.SelectMany(ToSelectorResults));
}
private static IAsyncEnumerable <Result <LevelSelectors> > GetLevelSelectorsEnumerableAsync(
this IReadOnlyMemoizationSessionWithLevelSelectors session,
Context context,
Fingerprint weakFingerprint,
CancellationToken cts,
int level)
{
return(AsyncEnumerableExtensions.CreateSingleProducerTaskAsyncEnumerable <Result <LevelSelectors> >(
async() =>
{
var result = await session.GetLevelSelectorsAsync(context, weakFingerprint, cts, level);
return new[] { result };
}));
}