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The Sage Notebook Server

This document gives an overview of the new Sage Notebook server, including how it responds to user requests, delegates tasks, etc. See #6983 for instructions on trying out the new server.

• All access goes through guard.py.

• locateChild checks authentication.

• If the user is authenticated, locateResource is called to get the appropriate page.

• locateResource, in turn, uses the LoginSystem class in avatars.py to get the appropriate resource.

• LoginSystem calls the appropriate function in twist.py.

• Which would be AdminTopLevel, UserTopLevel, FailedTopLevel, or AnonymousTopLevel, depending on the user type.

• The *TopLevel resources generate child resources based on their childFactory methods.

• Each resource represents a segment of the URL.

• Thus '/' is the TopLevel resource, and '/home/' is mapped to the Worksheets resource, etc.

• The tree is traversed until a leaf is reached, then the leaf's render method is called.