/// <summary>
/// Checks if any items have changed in the Session, and stores the results to Redis
/// </summary>
/// <param name="context">The HttpContext of the current web request</param>
/// <param name="id">The Session Id and Redis key name</param>
/// <param name="item">The Session properties</param>
/// <param name="lockId">The object used to exclusively lock the Session (there shouldn't be one)</param>
/// <param name="newItem">Whether or not the Session was created in this HttpContext</param>
public override void SetAndReleaseItemExclusive(HttpContext context, string id, SessionStateStoreData item, object lockId, bool newItem)
{
try
{
string currentRedisHashId = RedisSessionStateStoreProvider.RedisHashIdFromSessionId(
new HttpContextWrapper(context),
id);
LocalSharedSessionDictionary sharedSessDict = new LocalSharedSessionDictionary();
RedisSessionStateItemCollection redisItems =
sharedSessDict.GetSessionForEndRequest(currentRedisHashId);
if (redisItems != null)
{
RedisSessionStateStoreProvider.SerializeToRedis(
new HttpContextWrapper(context),
redisItems,
currentRedisHashId,
this.SessionTimeout);
}
}
catch (Exception e)
{
if (RedisSessionConfig.SessionExceptionLoggingDel != null)
{
RedisSessionConfig.SessionExceptionLoggingDel(e);
}
}
}
/// <summary>
/// This method is called when the Session decides that no element has been modified. Due to
/// the implementation of Falcon.Libraries.Sessions.RedisSessionStateItemCollection, this method
/// is never called (because the .Dirty property always returns true). The reason is because
/// we always dirty-check the collection in SetAndReleaseItemExclusive to ensure Session
/// correctness.
/// </summary>
/// <param name="context">The HttpContext of the current web request</param>
/// <param name="id">The SessionId of the current request</param>
/// <param name="lockId">A lock around the current Session so no other web request can modify it
/// simultaneously</param>
public override void ReleaseItemExclusive(HttpContext context, string id, object lockId)
{
// if, for some reason, we are in this method we still want to record that we are no
// longer going to use a session in local cache
string currentRedisHashId = RedisSessionStateStoreProvider.RedisHashIdFromSessionId(
new HttpContextWrapper(context),
id);
LocalSharedSessionDictionary sharedSessDict = new LocalSharedSessionDictionary();
sharedSessDict.GetSessionForEndRequest(currentRedisHashId);
}
/// <summary>
/// Gets a Session from Redis, indicating a non-exclusive lock on the Session. Note that GetItemExclusive
/// calls this method internally, meaning we do not support locks at all retrieving the Session.
/// </summary>
/// <param name="context">The HttpContext of the current request</param>
/// <param name="id">The Session Id, which is the key name in Redis</param>
/// <param name="locked">Whether or not the Session is locked to exclusive access for a single request
/// thread</param>
/// <param name="lockAge">The age of the lock</param>
/// <param name="lockId">The object used to lock the Session</param>
/// <param name="actions">Whether or not to initialize the Session (never)</param>
/// <returns>The Session objects wrapped in a SessionStateStoreData object</returns>
public override SessionStateStoreData GetItem(HttpContext context, string id, out bool locked, out TimeSpan lockAge, out object lockId, out SessionStateActions actions)
{
locked = false;
lockAge = new TimeSpan(0);
lockId = null;
actions = SessionStateActions.None;
try
{
string parsedRedisHashId = RedisSessionStateStoreProvider.RedisHashIdFromSessionId(
new HttpContextWrapper(context),
id);
LocalSharedSessionDictionary sharedSessDict = new LocalSharedSessionDictionary();
RedisSessionStateItemCollection items = sharedSessDict.GetSessionForBeginRequest(
parsedRedisHashId,
(redisKey) => {
return(RedisSessionStateStoreProvider.GetItemFromRedis(
redisKey,
new HttpContextWrapper(context),
this.SessionTimeout));
});
return(new SessionStateStoreData(
items,
SessionStateUtility.GetSessionStaticObjects(context),
Convert.ToInt32(this.SessionTimeout.TotalMinutes)));
}
catch (Exception e)
{
if (RedisSessionConfig.SessionExceptionLoggingDel != null)
{
RedisSessionConfig.SessionExceptionLoggingDel(e);
}
}
return(this.CreateNewStoreData(context, Convert.ToInt32(this.SessionTimeout.TotalMinutes)));
}
