public override void SetAndReleaseItemExclusive(HttpContext context, string id, SessionStateStoreData item, object lockId, bool newItem)
{
// 1 remote call
#region Access Log
#if TRACE
{
Handler.LogHandler.Tracking("Access Method: " + this.GetType().ToString() + "->" + ((object)MethodBase.GetCurrentMethod()).ToString() + " ;");
}
#endif
#endregion Access Log
// creating a new StoreDataInfo will initialize LockDate to null (unlocked)
SessionStoreDataContext data = new SessionStoreDataContext(item);
Cache.Add(GetCacheKey(id), (object)SessionStoreDataContext.Serialize(data), DateTime.Now.AddMinutes(item.Timeout));
}
public override void CreateUninitializedItem(HttpContext context, string id, int timeout)
{
// 1 remote call
#region Access Log
#if TRACE
{
Handler.LogHandler.Tracking("Access Method: " + this.GetType().ToString() + "->" + ((object)MethodBase.GetCurrentMethod()).ToString() + " ;");
}
#endif
#endregion Access Log
_timeout = timeout;
SessionStoreDataContext data = new SessionStoreDataContext(CreateNewStoreData(context, timeout));
Cache.Add(GetCacheKey(id), (object)SessionStoreDataContext.Serialize(data), DateTime.Now.AddMinutes(data.Data.Timeout));
}
public override void ReleaseItemExclusive(HttpContext context, string id, object lockId)
{
// 1-2 remote calls
#region Access Log
#if TRACE
{
Handler.LogHandler.Tracking("Access Method: " + this.GetType().ToString() + "->" + ((object)MethodBase.GetCurrentMethod()).ToString() + " ;");
}
#endif
#endregion Access Log
//todo: replace with single unlock call when available
byte[] bytes = Cache.Get <byte[]>(GetCacheKey(id));
if (bytes != null)
{
SessionStoreDataContext data = SessionStoreDataContext.Deserialize(bytes, context);
data.ClearLock();
Cache.Add(GetCacheKey(id), (object)SessionStoreDataContext.Serialize(data), DateTime.Now.AddMinutes(data.Data.Timeout));
}
}
private SessionStateStoreData FetchCachedStoreData(HttpContext context, string id, out bool locked, out TimeSpan lockAge, out object lockId, out SessionStateActions actions, bool exclusive)
{
// 1-2 remote calls
locked = false;
lockAge = TimeSpan.Zero;
lockId = null;
actions = SessionStateActions.None;
// check for existing session
byte[] bytes = Cache.Get <byte[]>(GetCacheKey(id));
if (bytes == null)
{
return(null);
}
SessionStoreDataContext data = SessionStoreDataContext.Deserialize(bytes, context);
locked = data.IsLocked;
if (locked)
{
lockAge = DateTime.Now.Subtract(data.LockDate.Value);
lockId = data.LockDate;
// specs require null to be returned
return(null);
}
//todo: rewrite with real locking when available
// as of a few microseconds ago, this session was unlocked, so proceed
if (exclusive)
{
data.LockDate = DateTime.Now;
// not perfectly thread safe as there can be race conditions between
// clustered servers, but this is the best we've got
Cache.Add(GetCacheKey(id), (object)SessionStoreDataContext.Serialize(data), DateTime.Now.AddMinutes(data.Data.Timeout));
}
return(data.Data);
}