[metrics-bugs] #29461 [Metrics/CollecTor]: Add a Snowflake module

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#29461: Add a Snowflake module
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 Reporter:  irl                                  |          Owner:
                                                 |  metrics-team
     Type:  enhancement                          |         Status:
                                                 |  needs_information
 Priority:  Medium                               |      Milestone:
Component:  Metrics/CollecTor                    |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  metrics-roadmap-august, anti-        |  Actual Points:
  censorship-roadmap-september                   |
Parent ID:                                       |         Points:  8
 Reviewer:  irl                                  |        Sponsor:
                                                 |  Sponsor28
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Comment (by dcf):

 Replying to [comment:26 cohosh]:
 > I can do that, yes. dcf just commented that it might be easier to do the
 version on a separate line (see
 https://trac.torproject.org/projects/tor/ticket/31493#comment:3). Do you
 have an opinion on that? We're looking for ease of use now and in the
 future if/when the version bumps.

 I was picturing a `@type snowflake-stats 1.0` so that the format is the
 same as other CollecTor formats.
 [https://metrics.torproject.org/collector.html#data-formats Data Formats]:
 "Each descriptor provided here contains an `@type` annotation using the
 format `@type $descriptortype $major.$minor`." See for example in
 [https://github.com/NullHypothesis/zoossh/blob/7ce3729b60488c3418d9ab01bd89126d7dd4b21d/util.go#L48-L50
 zoossh].

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/29461#comment:27>
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