public async Task detect_first_gap()
{
NumberOfStreams = 10;
await PublishSingleThreaded();
await deleteEvents(NumberOfEvents - 100, NumberOfEvents - 50);
var current = await _runner.Query(theGapDetector, CancellationToken.None).ConfigureAwait(false);
current.ShouldBe(NumberOfEvents - 101);
}
public async Task <HighWaterStatistics> DetectInSafeZone(DateTimeOffset safeTimestamp, CancellationToken token)
{
var statistics = await loadCurrentStatistics(token);
_safeSequenceFinder.SafeTimestamp = safeTimestamp;
var safeSequence = await _runner.Query(_safeSequenceFinder, token);
if (safeSequence.HasValue)
{
statistics.SafeStartMark = safeSequence.Value;
}
await calculateHighWaterMark(statistics, token);
return(statistics);
}
public async Task <HighWaterStatistics> DetectInSafeZone(CancellationToken token)
{
var statistics = await loadCurrentStatistics(token).ConfigureAwait(false);
// Skip gap and find next safe sequence
_gapDetector.Start = statistics.SafeStartMark + 1;
var safeSequence = await _runner.Query(_gapDetector, token).ConfigureAwait(false);
_logger.LogInformation("Daemon projection high water detection skipping a gap in event sequence, determined that the 'safe harbor' sequence is at {SafeHarborSequence}", safeSequence);
if (safeSequence.HasValue)
{
statistics.SafeStartMark = safeSequence.Value;
}
await calculateHighWaterMark(statistics, token).ConfigureAwait(false);
return(statistics);
}
