[tor-bugs] #6730 [Compass]: A way to see changes in datasets over time

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#6730: A way to see changes in datasets over time
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 Reporter:  mo           |          Owner:     
     Type:  enhancement  |         Status:  new
 Priority:  minor        |      Milestone:     
Component:  Compass      |        Version:     
 Keywords:               |         Parent:     
   Points:               |   Actualpoints:     
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Comment(by karsten):

 Replying to [comment:3 gsathya]:
 > Moritz made https://github.com/moba/tor-fast-exits-tracker to track
 changes. Maybe integrate this into compass?

 No.  That script seems like a fine hack, but not like a good design.  We
 should not integrate it into Compass.  Compass should not create an
 archive of Onionoo documents.  In fact, no Onionoo client should be forced
 to do that.  Such a history based on Onionoo documents starts on the day
 when you set up the script, and there's no way to import past history.
 Also, whenever the script fails, there will be missing data that cannot be
 recovered.

 I guess what we should do instead is generalize the desired feature as
 much as possible and put that into Onionoo itself.  Onionoo has access to
 the last 72 hours of Tor data, so can recover from failures up to 72 hours
 without missing any data, and it's easy to import descriptors from the
 past weeks, months, or even years.  What's the exact feature here?  Maybe
 we can integrate that data into Onionoo somehow.

 Note that this discussion is not quite what this ticket is about, which is
 to detect newly added or recently disappeared relays or bridges.  Please
 open a new ticket.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/6730#comment:4>
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