[metrics-bugs] #31695 [Metrics/CollecTor]: Allow pushing Metrics to CollecTor from trusted endpoints

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#31695: Allow pushing Metrics to CollecTor from trusted endpoints
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     Reporter:  irl                |      Owner:  metrics-team
         Type:  enhancement        |     Status:  new
     Priority:  Medium             |  Milestone:
    Component:  Metrics/CollecTor  |    Version:
     Severity:  Normal             |   Keywords:
Actual Points:                     |  Parent ID:
       Points:                     |   Reviewer:
      Sponsor:                     |
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 Switch from pull to push model for archiving OnionPerf data: Another
 aspect related to collecting data is that, right now, data collection
 works by periodically pulling new .tpf files from known OnionPerf
 instances. This has at least two problems: there's a delay between
 OnionPerfs producing new files and CollecTor pulling them, and adding new
 instances requires editing a config file on the CollecTor host. Maybe we
 can switch to a push model where CollecTor accepts measurements from any
 OnionPerf instance, and CollecTor clients like the Tor Metrics website
 decide which measurements to aggregate and visualize. Note that switching
 to a push model requires installing some basic authentication mechanisms
 like cryptographic identities and signatures, in order to prevent anyone
 from pushing wrong data, overwriting correct data, or even storing
 arbitrary data.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31695>
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