/// <summary>
/// Uses reflection to determine if the MongoDB Session State Provider is holding onto a sessionId
/// in it's memory cache object.
/// </summary>
/// <param name="mongoSessionStateProvider">The provider to use</param>
/// <param name="sessionId">The session id to query</param>
/// <param name="dataFromCache">The data retrieved from the cache</param>
/// <returns>True if the session exists in the provider's cache</returns>
private bool CheckSessionExistsInCache(MongoDBSessionStateProvider mongoSessionStateProvider, string sessionId, out ISessionStateData dataFromCache)
{
var mongoSessionStateProviderBaseType = mongoSessionStateProvider.GetType().BaseType;
bool objectExistsInCache = (bool)mongoSessionStateProviderBaseType
.GetMethod("CacheContains", BindingFlags.NonPublic | BindingFlags.Instance)
.Invoke(mongoSessionStateProvider, new object[] { sessionId });
dataFromCache = (DefaultSessionStateData)mongoSessionStateProviderBaseType
.GetMethod("CacheGet", BindingFlags.NonPublic | BindingFlags.Instance)
.Invoke(mongoSessionStateProvider, new object[] { sessionId });
return objectExistsInCache;
}
/// <summary>
/// Method that creates a new session, waits for it to automatically expire and then
/// verifies that the session has been removed from the provider as well as the provider's
/// memory cache.
/// </summary>
/// <param name="mongoSessionStateProvider">The MongoDB provider to use for the test.</param>
private void VerifySessionExpiration(MongoDBSessionStateProvider mongoSessionStateProvider)
{
var mongoSessionStateProviderBaseType = mongoSessionStateProvider.GetType().BaseType;
HttpRequest httpRequest = null;
HttpResponse httpResponse = null;
HttpContext httpContext = GetContext(out httpRequest, out httpResponse);
var timeoutInMinutes = (_TimeoutInSeconds / 60);
var storeData = mongoSessionStateProvider.CreateNewStoreData(httpContext, timeoutInMinutes);
storeData.Items["DummyEntry"] = "DummyValue";
string sessionId = null;
lock (_SessionIdManager)
{
sessionId = _SessionIdManager.CreateSessionID(httpContext);
}
object lockId = null; // New items don't have a lockId
mongoSessionStateProvider.SetAndReleaseItemExclusive(httpContext, sessionId, storeData, lockId, true);
TestContext.WriteLine("Created Session {0}", sessionId);
int counter = _TimeoutInSeconds + 60;
TestContext.WriteLine("Waiting {0} seconds...", counter);
while (counter > 0)
{
System.Threading.Thread.Sleep(1000);
counter--;
}
bool locked;
TimeSpan lockAge;
object lockId2 = null;
System.Web.SessionState.SessionStateActions actions;
var storeDataAfterExpiry = mongoSessionStateProvider.GetItem(httpContext, sessionId, out locked, out lockAge, out lockId2, out actions);
if (storeDataAfterExpiry == null || storeDataAfterExpiry.Items.Count == 0)
{
TestContext.WriteLine("Session expired from Session State Provider. Verifying session provider cache...");
ISessionStateData objectInCache = null;
bool objectExistsInCache = CheckSessionExistsInCache(mongoSessionStateProvider, sessionId, out objectInCache);
if (objectInCache != null)
{
Assert.Fail("Session data exists in cache when should have expired - Expires = {0}", objectInCache.Expires);
}
else if (objectInCache == null && objectExistsInCache)
{
Assert.Fail("Session data has expired but the cache is retaining the object!");
}
else
{
TestContext.WriteLine("Success - session data does not exist in cache.");
}
}
else
{
Assert.Fail("Session expired but MongoDB Sessions State Provider still contains data!");
}
}
