MongoSF 2011 talk on Allura, the new platform for SourceForge that we released under an Apache license

1. Allura – an Open Source MongoDB Based Document Oriented SourceForge Rick Copeland @rick446 [email_address]

2. I am not Mark Ramm (sorry)

5. System Architecture Web-facing App Server Task Daemon SMTP Server FUSE Filesystem (repository hosting)

8. Ming Example from ming import schema, Field from ming.orm import (mapper, Mapper, RelationProperty, ForeignIdProperty) WikiDoc = collection(‘ wiki_page' , session, Field( '_id' , schema . ObjectId()), Field( 'title' , str , index = True ), Field( 'text' , str )) CommentDoc = collection(‘ comment' , session, Field( '_id' , schema . ObjectId()), Field( 'page_id' , schema . ObjectId(), index = True ), Field( 'text' , str )) class WikiPage ( object ): pass class Comment ( object ): pass ormsession . mapper(WikiPage, WikiDoc, properties = dict ( comments = RelationProperty( 'WikiComment' ))) ormsession . mapper(Comment, CommentDoc, properties = dict ( page_id = ForeignIdProperty( 'WikiPage' ), page = RelationProperty( 'WikiPage' ))) Mapper . compile_all()

13. Repository Cache Lessons Learned Using MongoDB to represent graph structures (commit graph, commit trees) requires careful query planning. Pointer-chasing is no fun! Sometimes Ming validation and ORM overhead can be prohibitively expensive – time to drop down a layer. Benchmarking and profiling are your friends, as are queries like {‘_id’: {‘$in’:[…]}} for returning multiple objects

15. Authorization: ProjectRole Objects Roles can be named roles (“Groups”) or user proxies. Roles inherit all permissions of the roles they can “act as” User membership in a group is stored on the user proxy object (the list of roles for which the user has permission) Authorization checks all roles transitively for a user. If any role has the appropriate permission being required, then access is granted. Hierarchical role structures are supported, but not exposed in the UI.

21. Rick Copeland @rick446 [email_address]