public void PinResultMissFromMemoization()
{
PinResult pinResult = PinResult.ContentNotFound;
CasHash hash = RandomHelpers.CreateRandomCasHash();
Possible <string, Failure> maybe = pinResult.FromMemoization(hash, CacheId);
Assert.False(maybe.Succeeded);
NoCasEntryFailure failure = maybe.Failure as NoCasEntryFailure;
Assert.False(failure == null);
string failureMessage = failure.Describe();
Assert.Contains(hash.ToString(), failureMessage);
Assert.Contains(CacheId, failureMessage);
}
public Task <Possible <string, Failure> > PinToCasAsync(CasHash hash, UrgencyHint urgencyHint, Guid activityId)
{
Contract.Requires(!IsClosed);
return(Task.Run <Possible <string, Failure> >(() =>
{
using (var counter = m_counters.PinToCasCounter())
{
using (var eventing = new PinToCasActivity(BasicFilesystemCache.EventSource, activityId, this))
{
eventing.Start(hash, urgencyHint);
if (!m_pinnedToCas.ContainsKey(hash))
{
if (!m_cache.CasExists(hash))
{
counter.PinMiss();
var result = new NoCasEntryFailure(m_cache.CacheId, hash);
return eventing.Returns(result);
}
if (!m_pinnedToCas.TryAdd(hash, 0))
{
counter.PinRaced();
}
}
else
{
counter.PinDup();
}
return eventing.Returns(m_cache.CacheId);
}
}
}));
}
