internal static IEnumerable <Task <Possible <CasEntries, Failure> > > GetCacheEntries(this ICacheReadOnlySession session, IEnumerable <StrongFingerprint> strongFingerprints)
{
foreach (var strongFingerprint in strongFingerprints)
{
yield return(session.GetCacheEntryAsync(strongFingerprint));
}
}
private async Task ValidateSessionAsync(HashSet <FullCacheRecord> expectedRecords, ICache cache, string sessionId, FakeBuild.CasAccessMethod accessMethod)
{
if (!ImplementsTrackedSessions || DummySessionName != null)
{
return;
}
ICacheReadOnlySession readOnlySession = (await cache.CreateReadOnlySessionAsync()).Success();
// Check that the content is fine
HashSet <FullCacheRecord> foundRecords = new HashSet <FullCacheRecord>();
foreach (var strongFingerprintTask in cache.EnumerateSessionStrongFingerprints(DummySessionName ?? sessionId).Success().OutOfOrderTasks())
{
StrongFingerprint strongFingerprint = await strongFingerprintTask;
CasEntries casEntries = (await readOnlySession.GetCacheEntryAsync(strongFingerprint)).Success();
FullCacheRecord record = new FullCacheRecord(strongFingerprint, casEntries);
XAssert.IsTrue(expectedRecords.Contains(record), "Found record that was not expected!");
foundRecords.Add(record);
}
(await readOnlySession.CloseAsync()).Success();
await FakeBuild.CheckContentsAsync(cache, foundRecords, accessMethod);
XAssert.AreEqual(expectedRecords.Count, foundRecords.Count);
}
public async Task <Possible <CasEntries, Failure> > GetCacheEntryAsync(StrongFingerprint strong, UrgencyHint urgencyHint, Guid activityId)
{
using (var eventing = new GetCacheEntryActivity(CompositingCache.EventSource, activityId, this))
{
eventing.Start(strong, urgencyHint);
return(eventing.Returns(await m_metadataSession.GetCacheEntryAsync(strong, urgencyHint, eventing.Id)));
}
}
public Task <Possible <CasEntries, Failure> > GetCacheEntryAsync(StrongFingerprint strong, UrgencyHint urgencyHint, Guid activityId)
{
var callback = GetCacheEntryAsyncCallback;
if (callback != null)
{
return(callback(strong, urgencyHint, activityId, m_realSession));
}
else
{
return(m_realSession.GetCacheEntryAsync(strong, urgencyHint, activityId));
}
}
/// <summary>
/// Asynchronously loads all of the cache entries associated with the
/// given strong fingerprints
/// </summary>
/// <param name="strongFingerprintTasks">
/// Strong fingerprints of the cache entries to load
/// </param>
/// <param name="errors">
/// Where any cache errors found get stored
/// </param>
/// <param name="weakFingerprintsFound">
/// If not null, all weak fingerpints found will be added
/// </param>
private IEnumerable <Task> LoadCacheEntriesAsync(
IEnumerable <Task <StrongFingerprint> > strongFingerprintTasks,
ConcurrentDictionary <CacheError, int> errors,
ConcurrentDictionary <WeakFingerprintHash, byte> weakFingerprintsFound)
{
foreach (Task <StrongFingerprint> strongFingerprintTask in strongFingerprintTasks)
{
yield return(Task.Run(async() =>
{
StrongFingerprint strongFingerprint = await strongFingerprintTask.ConfigureAwait(false);
if (strongFingerprint == null)
{
errors.TryAdd(new CacheError(CacheErrorType.SessionError, "Null StrongFingerprint"), 0);
return;
}
Func <StrongFingerprint, Task <Possible <CasEntries, Failure> > > delegateToUse;
if (weakFingerprintsFound == null)
{
delegateToUse = (sfp) => m_readOnlySession.GetCacheEntryAsync(sfp);
}
else
{
delegateToUse = (sfp) =>
{
weakFingerprintsFound.TryAdd(sfp.WeakFingerprint, 0);
return m_readOnlySession.GetCacheEntryAsync(sfp);
};
}
// Only check StrongFingerprint if never seen before
Analysis.IgnoreResult(
await AllFullCacheRecords.GetOrAdd(strongFingerprint, delegateToUse).ConfigureAwait(false)
);
}));
}
}
public async Task SimpleDummySession()
{
const string TestName = "SimpleSession";
string testCacheId = MakeCacheId(TestName);
ICache cache = await CreateCacheAsync(testCacheId);
// Now for the session (which we base on the cache ID)
string testSessionId = "Session1-" + testCacheId;
ICacheSession session = await CreateSessionAsync(cache, testSessionId);
// Do the default fake build for this test (first time, no cache hit)
FullCacheRecord built = await FakeBuild.DoPipAsync(session, TestName);
XAssert.AreEqual(FakeBuild.NewRecordCacheId, built.CacheId, "Should have been a new cache entry!");
// Now we see if we can get back the items we think we should
await CloseSessionAsync(session, testSessionId);
// We need a read only session to get the CasEntries
ICacheReadOnlySession readOnlySession = (await cache.CreateReadOnlySessionAsync()).Success();
// Validate that the cache contains a dummy session and it has the one cache record it needs.
HashSet <FullCacheRecord> found = new HashSet <FullCacheRecord>();
foreach (var strongFingerprintTask in cache.EnumerateSessionStrongFingerprints(MemoizationStoreAdapterCache.DummySessionName).Success().OutOfOrderTasks())
{
StrongFingerprint strongFingerprint = await strongFingerprintTask;
CasEntries casEntries = (await readOnlySession.GetCacheEntryAsync(strongFingerprint)).Success();
FullCacheRecord record = new FullCacheRecord(strongFingerprint, casEntries);
// If it is not the record we already found...
if (!found.Contains(record))
{
found.Add(record);
}
XAssert.AreEqual(1, found.Count, "There should be only 1 unique record in the session");
XAssert.AreEqual(built.StrongFingerprint.WeakFingerprint, record.StrongFingerprint.WeakFingerprint);
XAssert.AreEqual(built.StrongFingerprint.CasElement, record.StrongFingerprint.CasElement);
XAssert.AreEqual(built.StrongFingerprint.HashElement, record.StrongFingerprint.HashElement);
XAssert.AreEqual(built.CasEntries.Count, record.CasEntries.Count, "Did not return the same number of items");
XAssert.IsTrue(record.CasEntries.Equals(built.CasEntries), "Items returned are not the same hash and/or order order");
XAssert.AreEqual(built, record);
// We can not check record.CasEntries.IsDeterministic
// as the cache may have determined that they are deterministic
// via cache determinism recovery.
}
XAssert.AreEqual(1, found.Count, "There should be 1 and only 1 record in the session!");
await readOnlySession.CloseAsync().SuccessAsync();
// Check that the cache has the items in it
await FakeBuild.CheckContentsAsync(cache, built);
// Now redo the "build" with a cache hit
testSessionId = "Session2-" + testCacheId;
session = await CreateSessionAsync(cache, testSessionId);
FullCacheRecord rebuilt = await FakeBuild.DoPipAsync(session, TestName);
XAssert.AreEqual(built, rebuilt, "Should have been the same build!");
// We make sure we did get it from a cache rather than a manual rebuild.
XAssert.AreNotEqual(built.CacheId, rebuilt.CacheId, "Should not be the same cache ID");
await CloseSessionAsync(session, testSessionId);
readOnlySession = await cache.CreateReadOnlySessionAsync().SuccessAsync();
// Now that we have done the second build via a cache hit, it should produce the
// same cache record as before
foreach (var strongFingerprintTask in cache.EnumerateSessionStrongFingerprints(MemoizationStoreAdapterCache.DummySessionName).Success().OutOfOrderTasks())
{
StrongFingerprint strongFingerprint = await strongFingerprintTask;
CasEntries casEntries = (await readOnlySession.GetCacheEntryAsync(strongFingerprint)).Success();
FullCacheRecord record = new FullCacheRecord(strongFingerprint, casEntries);
XAssert.IsTrue(found.Contains(record), "Second session should produce the same cache record but did not!");
}
(await readOnlySession.CloseAsync()).Success();
await ShutdownCacheAsync(cache, testCacheId);
}
public Task <Possible <CasEntries, Failure> > GetCacheEntryAsync(StrongFingerprint strong, UrgencyHint urgencyHint, Guid activityId)
{
return(m_session.GetCacheEntryAsync(strong, urgencyHint, activityId));
}