public async Task <Possible <int, Failure> > IncorporateRecordsAsync(IEnumerable <Task <StrongFingerprint> > strongFingerprints, Guid activityId)
{
Contract.Requires(!IsClosed);
Contract.Requires(strongFingerprints != null);
Contract.Assert(!IsReadOnly);
using (var counter = m_counters.IncorporateRecordsCounter())
{
using (var eventing = new IncorporateRecordsActivity(BasicFilesystemCache.EventSource, activityId, this))
{
eventing.Start();
int count = 0;
if (m_sessionId != null)
{
foreach (var strongTask in strongFingerprints)
{
StrongFingerprint strong = await strongTask;
if (!Contains(strong))
{
// Validate that we have the strong fingerprint
if (!m_cache.StrongFingerprintExists(strong))
{
// Strong fingerprint not found
return(eventing.StopFailure(new NoMatchingFingerprintFailure(strong)));
}
// Add it to our session since we don't have it already
AddSessionRecord(strong);
counter.NewRecord();
count++;
}
else
{
counter.DupRecord();
}
}
}
return(eventing.Returns(count));
}
}
}