[tor-bugs] #29624 [Metrics/Website]: New version of exit list format

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#29624: New version of exit list format
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 Reporter:  irl                                  |          Owner:  karsten
     Type:  task                                 |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:
Component:  Metrics/Website                      |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  metrics-exit-list-project metrics-   |  Actual Points:
  roadmap-2019-q2                                |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Changes (by karsten):

 * status:  accepted => needs_review
 * component:  Metrics/ExoneraTor => Metrics/Website


Comment:

 I just attached a first draft as
 [https://gitweb.torproject.org/user/karsten/metrics-
 web.git/commit/?h=task-29624&id=1eeefc46657d64a8c83d3fc1392cfabf985d6cd8
 commit 1eeefc4 in my task-29624 metrics-web branch], and I changed the
 component to Metrics/Website until we have a better place.

 I made two decisions when writing this first draft which we can further
 discuss:

  1. I specifically left out measurement details. While I very much agree
 that these might be useful for debugging, I don't see yet how they would
 fit into exit lists. Similarly, votes do not contain details about
 reachability tests, even though that would be interesting information. I'd
 be curious whether bandwidth files contain measurement details other than
 results. I'm afraid that if we start adding measurements to exit lists,
 we'll soon want to include more measurement details, adding more and more
 data that current consumers of exit lists do not really care about.

  2. I took out OR addresses, despite my earlier plans to include them. If
 we were to include everything from consensuses that's required for
 ExoneraTor and similar applications, we'd also have to include exit policy
 summaries. Then we'd be able to ignore consensuses and instead look at
 exit lists only. But what if we ever want to use more data from
 consensuses in ExoneraTor? We'd have to add that to the exit list format,
 too. I think it's better to leave this data where it comes from: in
 consensuses.

 Please review!

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29624#comment:4>
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