private SessionStateItem Get(HttpContext context, bool acquireLock, string id, out bool locked, out TimeSpan lockAge, out object lockId, out SessionStateActions actions)
{
locked = false;
lockId = null;
lockAge = TimeSpan.Zero;
actions = SessionStateActions.None;
var e = SessionStateItem.Load(this.client, id, false);
if (e == null)
{
return(null);
}
if (acquireLock)
{
// repeat until we can update the retrieved
// item (i.e. nobody changes it between the
// time we get it from the store and updates its attributes)
// Save() will return false if Cas() fails
while (true)
{
if (e.LockId > 0)
{
break;
}
actions = e.Flag;
e.LockId = e.HeadCas;
e.LockTime = DateTime.UtcNow;
e.Flag = SessionStateActions.None;
// try to update the item in the store
if (e.Save(this.client, id, true, true))
{
locked = true;
lockId = e.LockId;
return(e);
}
// it has been modifed between we loaded and tried to save it
e = SessionStateItem.Load(this.client, id, false);
if (e == null)
{
return(null);
}
}
}
locked = true;
lockAge = DateTime.UtcNow - e.LockTime;
lockId = e.LockId;
actions = SessionStateActions.None;
return(acquireLock ? null : e);
}
public override void ResetItemTimeout(HttpContext context, string id)
{
var e = SessionStateItem.Load(this.client, id, false);
if (e != null)
{
e.Save(this.client, id, false, true);
}
}
public override void RemoveItem(HttpContext context, string id, object lockId, SessionStateStoreData item)
{
if (!(lockId is ulong))
{
return;
}
var tmp = (ulong)lockId;
var e = SessionStateItem.Load(this.client, id, true);
if (e != null && e.LockId == tmp)
{
SessionStateItem.Remove(this.client, id);
}
}
public void Load_WhenNotSuccess_ReturnNull(ResponseStatus status)
{
//arrange
var result = new Mock <IOperationResult <byte[]> >();
result.Setup(x => x.Status).Returns(status);
var bucket = new Mock <IBucket>();
bucket.Setup(x => x.Get <byte[]>(It.IsAny <string>())).Returns(result.Object);
//act
var item = SessionStateItem.Load(bucket.Object, "thekey", false);
//assert
Assert.IsNull(item);
}
public override void ReleaseItemExclusive(HttpContext context, string id, object lockId)
{
if (!(lockId is ulong))
{
return;
}
var tmp = (ulong)lockId;
var e = SessionStateItem.Load(this.client, id, true);
if (e != null && e.LockId == tmp)
{
e.LockId = 0;
e.LockTime = DateTime.MinValue;
e.Save(this.client, id, true, true);
}
}
public override void SetAndReleaseItemExclusive(HttpContext context, string id, SessionStateStoreData item, object lockId, bool newItem)
{
SessionStateItem e = null;
bool existing = false;
if (!newItem)
{
if (!(lockId is ulong))
{
return;
}
var tmp = (ulong)lockId;
e = SessionStateItem.Load(this.client, id, true);
existing = e != null;
// if we're expecting an existing item, but
// it's not in the cache
// or it's not locked
// or it's locked by someone else, then quit
if (!newItem &&
(!existing ||
e.LockId == 0 ||
e.LockId != tmp))
{
return;
}
}
if (!existing)
{
e = new SessionStateItem();
}
// set the new data and reset the locks
e.Timeout = item.Timeout;
e.Data = (SessionStateItemCollection)item.Items;
e.Flag = SessionStateActions.None;
e.LockId = 0;
e.LockTime = DateTime.MinValue;
e.Save(this.client, id, false, existing && !newItem);
}
