[Twisted-Python] need an identity

[Sean Riley]

I seem to have a problem...

I need access to the identity for a client as their perspective is being
created from within getPerspectiveRequest(). Although
Service::getPerspectiveRequest is called by the identity instance for the
client, when using the DBAuthorizer, there doesnt appear to be a way to
access this identity object from within getPerspectiveRequest.

The only way to lookup an identity is Authorizer::getIdentityRequest - which
in this case will hit the database again to load the identity. I want the
existing identity instance, not a new instance for the same identity. I know
the Identity instance is out there, but I can't get at it!

The DbAuthorizer does not keep an "identities" list around, so I cant look
up the identity the same way you can in the DefaultAuthorizer.

Is this a security issue? Is access to the identity information for a
perspective not allowed?

One solution would be for me would be for the identity to be passed into
getPerspectiveRequest as another argument:

def getPerspectiveRequest(self, name, identity):

instead of the existing:

def getPerspectiveRequest(self, name):

This is may be too drastic an API change for just this one case... but it
doesnt require changing much existing code...

thoughts?

----
Sean Riley