public bool PerformOperation(DirectoryAction action)
{
ImmutableHashSet <string> hashset;
switch (action.Element)
{
case DirectoryElement.User: hashset = _users; break;
case DirectoryElement.Connection: hashset = _connections; break;
case DirectoryElement.Group: hashset = _groups; break;
default:
throw new NotImplementedException(); //TODO proper exception
}
ImmutableHashSet <string> newHashSet = hashset;
if (action.Action == DirectoryElementAction.Add)
{
newHashSet = hashset.Add(action.Item);
}
else
{
newHashSet = hashset.Remove(action.Item);
}
if (newHashSet != hashset)
{
switch (action.Element)
{
case DirectoryElement.User: Interlocked.Exchange(ref _users, newHashSet); break;
case DirectoryElement.Connection: Interlocked.Exchange(ref _connections, newHashSet); break;
case DirectoryElement.Group: Interlocked.Exchange(ref _groups, newHashSet); break;
}
return(true);
}
return(false);
}
public Task PerformAction(DirectoryAction action)
{
var _hub = _hubs.GetOrAdd(action.Hub, _ => new ClusterNodeHubDirectory());
lock (_syncObject)
{
var operationSequence = this.Sequence;
if (_hub.PerformOperation(action))
{
var remoteOperation = new RemoteDirectoryOperation(_membershipProvider.GetOwnUniqueId(), Sequence, action);
this.Sequence = this.Sequence == Int32.MaxValue ? 0 : this.Sequence++;
_actionHistory.Add(action);
return(_clusterClient.BroadcastDirectoryOperation(new[] { remoteOperation }));
}
}
return(Task.CompletedTask);
}
public RemoteDirectoryOperation(string node, int sequence, DirectoryAction action)
{
Node = node;
Sequence = sequence;
Action = action;
}