[metrics-bugs] #21087 [Metrics/CollecTor]: What is @source?

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#21087: What is @source?
-----------------------------------+--------------------------
     Reporter:  atagar             |      Owner:  metrics-team
         Type:  enhancement        |     Status:  new
     Priority:  Medium             |  Milestone:
    Component:  Metrics/CollecTor  |    Version:
     Severity:  Normal             |   Keywords:
Actual Points:                     |  Parent ID:
       Points:                     |   Reviewer:
      Sponsor:                     |
-----------------------------------+--------------------------
 Hi Karsten, a user reached out to me because Stem's validator warns about
 a [https://collector.torproject.org/archive/relay-descriptors/server-
 descriptors/server-descriptors-2016-09.tar.xz CollecTor tarball]. In
 particular it's surprised by @source annotations in the server
 descriptors.

 Here's the *server-
 descriptors-2016-09/2/2/228e3ecf654e1b7b4f01a0027e599e7ba14b216c*
 descriptor from the tarball for an example...

 {{{
 @type server-descriptor 1.0
 router sauronkingofmortor 137.74.116.214 9001 0 9030
 identity-ed25519
 -----BEGIN ED25519 CERT-----
 AQQABkAYAXe8xhBhoRVgI2ZswouGG50gLzYsWudXIp96bCAloSStAQAgBADs9XUH
 7zgiFd+mjPWwFLUpvma8qvdtChcgp4K6WDDnU6ub3BDNZ7nGTDvYPHVmq4URzobG
 uAsjOIPlf1vkU3YJdpBe0KGHy5JeuJ10TDQwlK1F761pSApIdH1ocIg4oAE=
 -----END ED25519 CERT-----
 master-key-ed25519 7PV1B+84IhXfpoz1sBS1Kb5mvKr3bQoXIKeCulgw51M
 platform Tor 0.2.8.7 on Linux
 protocols Link 1 2 Circuit 1
 published 2016-09-15 09:23:41
 fingerprint 2D8A FA91 2E2B 8623 BB2C DACD 1933 2209 D524 D1A3
 uptime 860586
 bandwidth 12288000 12288000 7792456
 extra-info-digest 2017D54A2C28B100CE173351E0799E15153B703B
 D2vKVNwaxArp6bf11NWPRNoYGQ0lBgIwziSXNkL9TCw
 onion-key
 -----BEGIN RSA PUBLIC KEY-----
 MIGJAoGBAMNJzNJiDwd8y7ge4aXjkUCBKDncNhC91i5SQkxTHX4ZR/05+/liwR5O
 TPgoIG0FDQSEUMYDPY92XsRmgPXkpHBSga0ojrhwnYutXAPMRuT4Dm24kpJctdbG
 kwW6aovjNcoeJE3iB5ahUCv/TDnuiijioRSfjTPQsW68gHo1rOxJAgMBAAE=
 -----END RSA PUBLIC KEY-----
 signing-key
 -----BEGIN RSA PUBLIC KEY-----
 MIGJAoGBAJhvAVj6wurlz3khW1Z/2x8sAnyr9lBdiHMp8UEAhYw+7ct1fdmuZXbA
 I9aZbb7GEgR9UBW67qYd0aN1XHbDwb4OvAW+TOzcCjBmqiSLl5WACl0wIjuif7++
 xNVcRw04kmmbBf7IyjmmuCc6ihjGeG02aREitZGBSkyZwt8SAz0fAgMBAAE=
 -----END RSA PUBLIC KEY-----
 onion-key-crosscert
 -----BEGIN CROSSCERT-----
 ct5RfDtMM5h5G6T6pFkRANCsJGcjwpPK+b47yWoQSdH7C0Y4yjWX5Z48l511fPK6
 1v4IINEnuiCMkDp4HGpSW87aHatUaWP6MVo6pwQB2uqi8SpjPdlf6pJfSYNsvaZh
 00P6ENAXzDnFFvcNla0WI7o6rIE2tuP3qd7bxazACUU=
 -----END CROSSCERT-----
 ntor-onion-key-crosscert 0
 -----BEGIN ED25519 CERT-----
 AQoABj/6Aez1dQfvOCIV36aM9bAUtSm+Zryq920KFyCngrpYMOdTANd0d0EMe6BU
 CZrDB67jdOEX8P0T1MY1razuVMyvAjS1MPsM/F7uvCvgf1Su4NJFodWWPGLXWnHZ
 RFSpVcHmmg8=
 -----END ED25519 CERT-----
 hidden-service-dir
 contact luciole <luciolesauronkingofmortor at yopmail.com>
 ntor-onion-key lhvzaL7Ze85GFMWMQscMgIt9IOx6srmOiXqD85kOekI=
 reject *:@uploaded-at 2016-09-15 09:24:06
 @source "82.1.128.70"
 router torbeornottorbe 82.1.128.70 9001 0 0
 platform Tor 0.2.4.27 on Linux
 protocols Link 1 2 Circuit 1
 published 2016-09-15 09:24:06
 fingerprint C6EE 9826 7F82 962C C2FC 1E9E 2AE5 F317 B2D2 D6F0
 uptime 762082
 bandwidth 1024000 2048000 106721
 extra-info-digest 08D7C6A9FF860F6A5D12FB43BD2051ACC06BCE52
 onion-key
 -----BEGIN RSA PUBLIC KEY-----
 MIGJAoGBAMb/ajivr7C1z7cnVSz4dPe+T0cOvB6ickNb8vjquDM8eZh7mLecSACT
 H1D5DO97aJ0L1Bw5oOLzU77zx/2e/UUnHftiyZ8sNLmAE7smgEdUvhqNZSY+VSgN
 E1Qyc6CdBpJWdSRp1+/AbYq0XWXMTrkb7YvRyR0iuYDn03s82DU/AgMBAAE=
 -----END RSA PUBLIC KEY-----
 signing-key
 -----BEGIN RSA PUBLIC KEY-----
 MIGJAoGBAK5CqRjTHbA+AHxLqSCWoEOpiVUNqpdiEUVTvdmu7aQgPcR2VI/fS/oc
 tPmfC6L0l4eL0u1zZzbxJ8z5mop0M+0Wss8gWdpO7t7MNHu/GJ78gRRhb6Yz2JQf
 jTZcVGyDsI8PJZoH+if3slVCUcq14zy85hb9sF9spaDhTEBbhx+rAgMBAAE=
 -----END RSA PUBLIC KEY-----
 family $5A8B78AB293475D6D55F1CBFA5D2A1CEEB09545B
 $EAE900D1DB28D56F4535C06F1BAEB92B9E3BFEE6
 hidden-service-dir
 contact A36F 07B9 285A C895 3E42 69F3 0CCC 0AF6 2FEC DB6E Random Person
 <nae AT blueyonder dot co   dot uk>
 ntor-onion-key 90dT83YmTzH/uojnATf+KOtwJssKGURO/qdu3SR0XgE=
 reject *:*
 router-signature
 -----BEGIN SIGNATURE-----
 PohhIu5DPg4iK+5AV3/sLMbpiwCItMbnaNVWrve9nKXyHM18eskYpL1sLyj7/3Nk
 YKmFheD/alawStTr3rHkopdR8yj+1LZmWPlSHTy3x/U+uAzQl+66YcECEdw1xKMY
 oaYngrHlZSrCEgwDKwIS4GJ/rOYjGUl0HCC9z0OaZ5M=
 -----END SIGNATURE-----
 }}}

 Seems this is two descriptors concatenated together with a @source in the
 middle? Any hints on where these come from?

 Thanks!

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21087>
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