[tor-bugs] #2931 [Metrics]: Extend metrics database schema to bridge descriptors

[Tor Bug Tracker & Wiki]

#2931: Extend metrics database schema to bridge descriptors
-------------------------+--------------------------------------------------
 Reporter:  karsten      |          Owner:  karsten
     Type:  enhancement  |         Status:  new    
 Priority:  normal       |      Milestone:         
Component:  Metrics      |        Version:         
 Keywords:               |         Parent:         
   Points:               |   Actualpoints:         
-------------------------+--------------------------------------------------
 The current metrics database schema contains relay descriptors with all
 their details and aggregate statistics on bridges, Torperf, and GetTor.

 We should extend the schema to contain bridge descriptors with all their
 details, too, so that we can add new statistics on bridges more easily.
 Right now, adding new statistics means changing the Java code and parsing
 all bridge descriptors again.  Possible new bridge statistics are number
 of bridges on hour detail, relay flags, Tor versions, and operating
 systems of bridges.  We could also add bridge pool assignments to the
 database schema.

 (Extending the database schema for Torperf and/or GetTor is probably not
 as useful: the Torperf data can still be processed without database
 support, and the raw GetTor data is already aggregated to protect the
 privacy of GetTor users.)

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2931>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online