private SessionStateStoreData GetSessionStoreItem(bool lockRecord,
HttpContext context,
string id,
out bool locked,
out TimeSpan lockAge,
out object lockId,
out SessionStateActions actionFlags)
{
// Initial values for return value and out parameters.
SessionStateStoreData item = null;
lockAge = TimeSpan.Zero;
lockId = null;
locked = false;
actionFlags = 0;
// String to hold serialized SessionStateItemCollection.
string serializedItems = "";
// Timeout value from the data store.
int timeout = 0;
using (RedisClient client = this.RedisSessionClient)
{
try
{
if (lockRecord)
{
locked = false;
SessionItem currentItem = client.Get <SessionItem>(this.RedisKey(id));
if (currentItem != null)
{
// If the item is locked then do not attempt to update it
if (!currentItem.Locked)
{
currentItem.Locked = true;
currentItem.LockDate = DateTime.UtcNow;
client.Set <SessionItem>(this.RedisKey(id), currentItem, DateTime.UtcNow.AddMinutes(sessionStateConfig.Timeout.TotalMinutes));
}
else
{
locked = true;
}
}
}
SessionItem currentSessionItem = client.Get <SessionItem>(this.RedisKey(id));
if (currentSessionItem != null)
{
serializedItems = currentSessionItem.SessionItems;
lockId = currentSessionItem.LockID;
lockAge = DateTime.UtcNow.Subtract(currentSessionItem.LockDate);
actionFlags = (SessionStateActions)currentSessionItem.Flags;
timeout = currentSessionItem.Timeout;
}
else
{
locked = false;
}
if (currentSessionItem != null && !locked)
{
// Delete the old item before inserting the new one
client.Remove(this.RedisKey(id));
lockId = (int?)lockId + 1;
currentSessionItem.LockID = lockId != null ? (int)lockId : 0;
currentSessionItem.Flags = 0;
client.Set <SessionItem>(this.RedisKey(id), currentSessionItem, DateTime.UtcNow.AddMinutes(sessionStateConfig.Timeout.TotalMinutes));
// If the actionFlags parameter is not InitializeItem,
// deserialize the stored SessionStateItemCollection.
if (actionFlags == SessionStateActions.InitializeItem)
{
item = CreateNewStoreData(context, 30);
}
else
{
item = Deserialize(context, serializedItems, timeout);
}
}
}
catch (Exception e)
{
throw e;
}
}
return(item);
}