Log additional click events on Special:Diff
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	Samwalton9-WMF
	Jan 4 2023, 12:17 PM

Description

We want to be able to log click events on actions and links of note in Special:Diff so that we can better understand user behaviour on the page and evaluate our changes. This task is limited in scope to Special:Diff (not the MobileFrontend Special:MobileDiff page) and the Vector and Vector 2022 skins.

Specs

Register click events to the following buttons via the Metrics Platform (highlighted) in the Vector and Vector 2022 skins. The screenshots below are from Vector 2022, but the locations of these links should be extremely similar in legacy Vector.

Undo

Thank

Rollback

Requires administrator rights, by default.

Change visibility

Requires administrator rights, by default.

View history

Contribs

Add to watchlist

User page

Previous/Next edit

Specific tag links

Technical information

TBD

Testing and QA / Acceptance Criteria

Clicking the buttons highlighted in the Specs above should log an event via the Metrics Platform.

Details

Subject	Repo	Branch	Lines +/-
beta: log additional click events on Special:Diff\|MobileDiff	operations/mediawiki-config	master	+24 -1
improve diff logging instrument	mediawiki/extensions/WikimediaEvents	master	+7 -3
Log additional click events on Special:Diff	mediawiki/extensions/WikimediaEvents	master	+132 -1
MetricsClientIntegration: Make performer.registration_dt a string	mediawiki/extensions/EventLogging	master	+1 -1

Customize query in gerrit

Related Objects
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Status	Assigned	Task
Open	None	T312640 Evaluate and improve diffs and undoing edits on mobile web
Resolved	Samwalton9-WMF	T326212 Improve data logging on Special:Diff and Special:MobileDiff
Resolved	jsn.sherman	T326214 Log additional click events on Special:Diff

Event Timeline

One question I have - some of these links are in the headers for all pages, but we only care about data for users on the Diff page. Are we able to limit our logging to this case, or would adding tracking to those links necessarily log from everywhere that links like 'View history' are present?

Samwalton9-WMF updated the task description. (Show Details)Jan 4 2023, 12:25 PM

Restricted Application added a subscriber: Masumrezarock100. · View Herald TranscriptJan 4 2023, 12:25 PM

Samwalton9-WMF updated the task description. (Show Details)Jan 4 2023, 12:26 PM

Samwalton9-WMF removed a project: Epic.Jan 4 2023, 12:30 PM

Samwalton9-WMF moved this task from Inbox to Diff/Undo on the Moderator-Tools-Team board.Jan 4 2023, 12:42 PM

Samwalton9-WMF moved this task from Diff/Undo to To be estimated on the Moderator-Tools-Team board.

In T326214#8497637, @Samwalton9 wrote:

One question I have - some of these links are in the headers for all pages, but we only care about data for users on the Diff page. Are we able to limit our logging to this case, or would adding tracking to those links necessarily log from everywhere that links like 'View history' are present?

@phuedx I wonder if you might have an answer to this, in the context of using the Metrics Platform?

Samwalton9-WMF updated the task description. (Show Details)Jan 9 2023, 1:22 PM

Hey @Samwalton9. I think the simplest solution would be to create an instrument tailored to the page you want it to run on.

This could be implemented as simply as:

WikimediaEvents/modules/ext.wikimediaEvents/index.js

// …

// Added by DifferenceEngine::showDiffPage()
var isDiffPage = !!mw.config.get( 'wgDiffOldId' );

if ( isDiffPage ) {
  require( './specialDiff.js' );
}

WikimediaEvents/modules/ext.wikimediaEvents/specialDiff.js

// Insert awesome instrument here

This approach has a couple advantages over using something like the *WebUIActions instruments:

You own the instrument: You can enable/disable/modify it when you need without coordination with other teams
You can have a higher sample rate
- The *WebUIActions instruments run on very nearly all pageviews and so have a low sampling rate. Your instrument will run on a much smaller subset of pageviews and so can have a higher sample rate

Very helpful, thanks!

Samwalton9-WMF updated the task description. (Show Details)Jan 18 2023, 10:50 AM

Samwalton9-WMF set the point value for this task to 5.Jan 19 2023, 3:34 PM

Samwalton9-WMF moved this task from To be estimated to Kanban on the Moderator-Tools-Team board.

Samwalton9-WMF edited projects, added Moderator-Tools-Team (Kanban); removed Moderator-Tools-Team.

jsn.sherman claimed this task.Mar 8 2023, 4:15 PM

jsn.sherman moved this task from Ready to In Progress on the Moderator-Tools-Team (Kanban) board.

Change 895853 had a related patch set uploaded (by Jsn.sherman; author: Jsn.sherman):

[mediawiki/extensions/WikimediaEvents@master] WIP: Log additional click events on Special:Diff

https://gerrit.wikimedia.org/r/895853

gerritbot added a project: Patch-For-Review.Mar 8 2023, 7:55 PM

@Samwalton9 I'm a little unclear on the "specific tag links" part. Is there a list of the tag links you want to track?

In T326214#8681559, @jsn.sherman wrote:

@Samwalton9 I'm a little unclear on the "specific tag links" part. Is there a list of the tag links you want to track?

I was hoping we could track any linked tags there generically. The second column at https://en.wikipedia.org/wiki/Special:Tags is, I assume, the same on each wiki in terms of which tags are linked, but it's pretty long.

I was hoping we could track any linked tags there generically. The second column at https://en.wikipedia.org/wiki/Special:Tags is, I assume, the same on each wiki in terms of which tags are linked, but it's pretty long.

We should be able to track any tag link, the word specific in there just made me think you had particular tags in mind.

As it stands, the tag event names will look like specialDiff.click.mw-tag-marker-<tagname>. Is that okay?

Also, we'll need to specify what attributes we want to merge in from the metrics platform client schema. Here's the list:
https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/libs/metrics-platform/+/refs/heads/master/php/src/StreamConfig/data/metrics_platform_client.schema.json#7

[
	'agent_app_install_id',
	'agent_client_platform',
	'agent_client_platform_family',
	'page_id',
	'page_title',
	'page_namespace',
	'page_namespace_name',
	'page_revision_id',
	'page_wikidata_id',
	'page_wikidata_qid',
	'page_content_language',
	'page_is_redirect',
	'page_user_groups_allowed_to_move',
	'page_user_groups_allowed_to_edit',
	'mediawiki_skin',
	'mediawiki_version',
	'mediawiki_is_production',
	'mediawiki_is_debug_mode',
	'mediawiki_database',
	'mediawiki_site_content_language',
	'mediawiki_site_content_language_variant',
	'performer_is_logged_in',
	'performer_id',
	'performer_name',
	'performer_session_id',
	'performer_pageview_id',
	'performer_groups',
	'performer_is_bot',
	'performer_language',
	'performer_language_variant',
	'performer_can_probably_edit_page',
	'performer_edit_count',
	'performer_edit_count_bucket',
	'performer_registration_dt'
]

note that in my local mediawiki docker performer_registration_dt blows up due to it apparently not being stringified.

Change 896432 had a related patch set uploaded (by Jsn.sherman; author: Jsn.sherman):

[operations/mediawiki-config@master] WIP: Log additional click events on Special:Diff

https://gerrit.wikimedia.org/r/896432

@Samwalton9: I'll need to have some more info to be able to configure this instrument:

At what sampling rate?
with what attributes?

@phuedx:

it looks the instrument can be rolled out independently of the config; e.g if there's no stream config for it on a given project, does the dispatch just do nothing? Should I make the instrument patch depend on the config patch, or otherwise associate the two in some way besides the gerrit topic?

In config I noticed that most streams were defined in the default array, but I saw wgEventBusSTreamNamesMap with a release candidate for the mediawiki_page_change stream. Is there a staggered rollout process we should be following with this, or do we just test it in beta and then roll it out in the default eventstreams config?

Also, a note for @Samwalton9: Currently I'm logging watch/unwatch as a single thing, and I'm also logging when the user clicks the thank link initially, rather than when they confirm the thank. We could very easily log those differently if we need to.

Change 898696 had a related patch set uploaded (by Phuedx; author: Phuedx):

[mediawiki/extensions/EventLogging@master] MetricsClientIntegration: Make performer.registration_dt a string

https://gerrit.wikimedia.org/r/898696

In T326214#8684175, @jsn.sherman wrote:

note that in my local mediawiki docker performer_registration_dt blows up due to it apparently not being stringified.

Id61c3eacab195795f6a0e40c78d5a48f5923e92e fixes this. I'll create a separate tracking task in a moment.

Edit

See T331972: Value for performer.registration_dt should be a string, not an integer.

In T326214#8688463, @jsn.sherman wrote:

@phuedx:

it looks the instrument can be rolled out independently of the config; e.g if there's no stream config for it on a given project, does the dispatch just do nothing? Should I make the instrument patch depend on the config patch, or otherwise associate the two in some way besides the gerrit topic?

That's correct – dispatch should NOP when there are no streams interested in the event being dispatched.

In config I noticed that most streams were defined in the default array, but I saw wgEventBusSTreamNamesMap with a release candidate for the mediawiki_page_change stream. Is there a staggered rollout process we should be following with this, or do we just test it in beta and then roll it out in the default eventstreams config?

The latter – test it on the Beta Cluster and then roll it out in the default value for $wgEventStreams.

In T326214#8684137, @jsn.sherman wrote:

As it stands, the tag event names will look like specialDiff.click.mw-tag-marker-<tagname>. Is that okay?

That's great! Clicking on any tag is the main thing we're interested in - if we can figure out which tags are being clicked that's even better!

Also, we'll need to specify what attributes we want to merge in from the metrics platform client schema. Here's the list:
https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/libs/metrics-platform/+/refs/heads/master/php/src/StreamConfig/data/metrics_platform_client.schema.json#7

I've pared this down to the attributes we're interested in:

[
	'mediawiki_skin',
	'mediawiki_version',
	'mediawiki_is_production',
	'mediawiki_database',
	'performer_is_logged_in',
	'performer_groups',
	'performer_edit_count_bucket',
	'performer_registration_dt'
]

In T326214#8688463, @jsn.sherman wrote:

@Samwalton9: I'll need to have some more info to be able to configure this instrument:

At what sampling rate?

Not sure how to answer this one. @phuedx do you have any guidance on how we could evaluate the best sampling rate (if 100% isn't appropriate)? Clicking links in a diff is mostly going to be done by logged-in editors, so this won't be as busy as the other schema we've been using - [mobile/desktop]webuiactionstracking - which I think is at somewhere around 10%, depending on the project.

In T326214#8688500, @jsn.sherman wrote:

Also, a note for @Samwalton9: Currently I'm logging watch/unwatch as a single thing, and I'm also logging when the user clicks the thank link initially, rather than when they confirm the thank. We could very easily log those differently if we need to.

I think that's absolutely fine as-is.

Change 898696 merged by jenkins-bot:

[mediawiki/extensions/EventLogging@master] MetricsClientIntegration: Make performer.registration_dt a string

https://gerrit.wikimedia.org/r/898696

In T326214#8691532, @Samwalton9 wrote:

In T326214#8688463, @jsn.sherman wrote:

At what sampling rate?

Not sure how to answer this one. @phuedx do you have any guidance on how we could evaluate the best sampling rate (if 100% isn't appropriate)? Clicking links in a diff is mostly going to be done by logged-in editors, so this won't be as busy as the other schema we've been using - [mobile/desktop]webuiactionstracking - which I think is at somewhere around 10%, depending on the project.

A quick query for pageviews by users between 9 AM and 12 PM yesterday suggests that 91645 (0.11%) were for diff pages [0]. Assuming those pageviews were evenly distributed across those three hours and that your instrument sends one event per pageview, your instrument will send only nine events per second. As I understand it, an instrument sending fewer than 1000 events per second doesn't need special consideration.

Given the above, I would recommend not setting a sampling rate.

[0]

+----------+--------+----------------+
|    n     | n_diff | n_diff_percent |
+----------+--------+----------------+
| 79798847 |  91645 |           0.11 |
+----------+--------+----------------+

select
  n,
  n_diff,
  round( 100 * n_diff / n, 2 ) as n_diff_percent
from (
  select
    sum( 1 ) as n,
    sum( if( uri_query like '%diff=%', 1, 0 ) ) as n_diff
  from
    wmf.webrequest
  where
    is_pageview = true
    and agent_type = 'user'
  
    and year = 2023
    and month = 3
    and day = 14
    and hour >= 9 and hour < 12
) as data
;

P.S. The 0.11% of all pageviews number is born out by data from Turnilo:

The number of sampled pageviews from 13 Feb 16:00 to 15 Mar 16:00 was ~193600000 million. Of those, ~235400 (0.12%) were for diff pages. Note well that the webrequest_sampled_128 data cube includes pageviews from bots, spiders, and users.

P.P.S. Please let me know if I'm querying for diff pages correctly – I've assumed it's user-initiated requests for URLs with diff= in the querystring.

Thanks @phuedx! I believe that should capture the majority of desktop diff pageviews but I think it would miss mobile diffs (example URL: https://en.m.wikipedia.org/wiki/Special:MobileDiff/1144732088?diffmode=source), but they're not going to be 100x more views than desktop, so I think we're good.

Okay, in that case my patches for this are ready for review. Thanks all!

Change 895853 merged by jenkins-bot:

[mediawiki/extensions/WikimediaEvents@master] Log additional click events on Special:Diff

https://gerrit.wikimedia.org/r/895853

ReleaseTaggerBot added a project: MW-1.41-notes (1.41.0-wmf.10; 2023-05-23).May 16 2023, 3:01 PM

SNowick_WMF mentioned this in T335444: Get Baseline data from Android & Mobile Web for iOS Watchlist .May 16 2023, 7:12 PM

Change 896432 merged by jenkins-bot:

[operations/mediawiki-config@master] beta: log additional click events on Special:Diff|MobileDiff

https://gerrit.wikimedia.org/r/896432

Maintenance_bot removed a project: Patch-For-Review.Jun 7 2023, 8:30 PM

Per this Slack thread all new data collection is now supposed to go through Legal for review. Although testing in Beta is OK, this is a blocker to rolling out to Production. I'll get the request submitted shortly.

hi @jsn.sherman - just wanted to follow up about seeing your beta-only stream in beta streams gui -- turns out there was something broken with EventGate. But even still, apparently beta-only stream configs have to be merged with metawiki.

Because stream config is hosted on metawiki, new beta-only streams need to be added via +metawiki override.
The docs just got updated -- see https://wikitech.wikimedia.org/wiki/Event_Platform/Instrumentation_How_To#In_beta.

So in the case of mediawiki.special_diff_interactions, you need to add an entry like so in InitialiseSettings-labs.php under wgEventStreams:

'+metawiki' => [
    'mediawiki.special_diff_interactions' => [
        'schema_title' => '/analytics/mediawiki/client/metrics_event',
        'destination_event_service' => 'eventgate-analytics-external'
    ],

and then your stream name key inside +enwiki can just have the override settings i.e. producers

Once you're cleared by L3SC to push to prod, you can just remove all of this from the labs config file.

In T326214#8916606, @cjming wrote:
hi @jsn.sherman - just wanted to follow up about seeing your beta-only stream in beta streams gui -- turns out there was something broken with EventGate. But even still, apparently beta-only stream configs have to be merged with metawiki.

Because stream config is hosted on metawiki, new beta-only streams need to be added via +metawiki override.
The docs just got updated -- see https://wikitech.wikimedia.org/wiki/Event_Platform/Instrumentation_How_To#In_beta.

So in the case of mediawiki.special_diff_interactions, you need to add an entry like so in InitialiseSettings-labs.php under wgEventStreams:
'+metawiki' => [
    'mediawiki.special_diff_interactions' => [
        'schema_title' => '/analytics/mediawiki/client/metrics_event',
        'destination_event_service' => 'eventgate-analytics-external'
    ],
and then your stream name key inside +enwiki can just have the override settings i.e. producers

Once you're cleared by L3SC to push to prod, you can just remove all of this from the labs config file.

thank you for the update! I'll try again next week.

I was able to test everything but rollback and change visibility (I'm not an admin on en beta)
it looks like the thank instrument will need an update because the confirmable requires two clicks to actually send on desktop. Otherwise, things are working as expected.

{
  "$schema": "/analytics/mediawiki/client/metrics_event/1.2.0",
  "dt": "2023-06-15T14:03:20.085Z",
  "name": "specialDiff.click.prev_link",
  "custom_data": {},
  "meta": {
    "stream": "mediawiki.special_diff_interactions",
    "domain": "en.wikipedia.beta.wmflabs.org",
    "id": "a7b90f3a-d293-45c7-adc7-1bcad0a292de",
    "dt": "2023-06-15T14:03:20.712Z",
    "request_id": "628e4170-0b85-11ee-9931-897bd4c4e7d2",
    "topic": "eqiad.mediawiki.special_diff_interactions",
    "partition": 0,
    "offset": 25
  },
  "mediawiki": {
    "skin": "vector-2022",
    "version": "1.41.0-alpha",
    "is_production": false,
    "database": "enwiki"
  },
  "performer": {
    "is_logged_in": true,
    "groups": [
      "*",
      "user"
    ],
    "edit_count_bucket": "0 edits",
    "registration_dt": "2022-04-13T20:10:01.000Z"
  },
  "agent": {
    "client_platform": "mediawiki_js",
    "client_platform_family": "desktop_browser"
  },
  "http": {
    "request_headers": {
      "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.1823.37"
    }
  }
}

{
  "$schema": "/analytics/mediawiki/client/metrics_event/1.2.0",
  "dt": "2023-06-15T14:03:37.940Z",
  "name": "specialDiff.click.next_link",
  "custom_data": {},
  "meta": {
    "stream": "mediawiki.special_diff_interactions",
    "domain": "en.wikipedia.beta.wmflabs.org",
    "id": "87c2e09b-f2ac-489d-90f3-640dfd1f2f6c",
    "dt": "2023-06-15T14:03:38.801Z",
    "request_id": "6d566b00-0b85-11ee-9931-897bd4c4e7d2",
    "topic": "eqiad.mediawiki.special_diff_interactions",
    "partition": 0,
    "offset": 28
  },
  "mediawiki": {
    "skin": "vector-2022",
    "version": "1.41.0-alpha",
    "is_production": false,
    "database": "enwiki"
  },
  "performer": {
    "is_logged_in": true,
    "groups": [
      "*",
      "user"
    ],
    "edit_count_bucket": "0 edits",
    "registration_dt": "2022-04-13T20:10:01.000Z"
  },
  "agent": {
    "client_platform": "mediawiki_js",
    "client_platform_family": "desktop_browser"
  },
  "http": {
    "request_headers": {
      "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.1823.37"
    }
  }
}

undo

{
  "$schema": "/analytics/mediawiki/client/metrics_event/1.2.0",
  "dt": "2023-06-15T14:16:51.510Z",
  "name": "specialDiff.click.undo",
  "custom_data": {},
  "meta": {
    "stream": "mediawiki.special_diff_interactions",
    "domain": "en.wikipedia.beta.wmflabs.org",
    "id": "350a264e-72b3-4692-b88a-a7a1839a4857",
    "dt": "2023-06-15T14:16:52.651Z",
    "request_id": "46822990-0b87-11ee-9931-897bd4c4e7d2",
    "topic": "eqiad.mediawiki.special_diff_interactions",
    "partition": 0,
    "offset": 56
  },
  "mediawiki": {
    "skin": "vector-2022",
    "version": "1.41.0-alpha",
    "is_production": false,
    "database": "enwiki"
  },
  "performer": {
    "is_logged_in": true,
    "groups": [
      "*",
      "user"
    ],
    "edit_count_bucket": "1-4 edits",
    "registration_dt": "2022-04-13T20:10:01.000Z"
  },
  "agent": {
    "client_platform": "mediawiki_js",
    "client_platform_family": "desktop_browser"
  },
  "http": {
    "request_headers": {
      "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.1823.37"
    }
  }
}

thank (double submits, probably due to confirmable):

{
  "$schema": "/analytics/mediawiki/client/metrics_event/1.2.0",
  "dt": "2023-06-15T14:03:31.406Z",
  "name": "specialDiff.click.thank",
  "custom_data": {},
  "meta": {
    "stream": "mediawiki.special_diff_interactions",
    "domain": "en.wikipedia.beta.wmflabs.org",
    "id": "5a23ddc3-eafc-4dc6-ac0f-80576d6941db",
    "dt": "2023-06-15T14:03:38.794Z",
    "request_id": "6d54e460-0b85-11ee-9931-897bd4c4e7d2",
    "topic": "eqiad.mediawiki.special_diff_interactions",
    "partition": 0,
    "offset": 26
  },
  "mediawiki": {
    "skin": "vector-2022",
    "version": "1.41.0-alpha",
    "is_production": false,
    "database": "enwiki"
  },
  "performer": {
    "is_logged_in": true,
    "groups": [
      "*",
      "user"
    ],
    "edit_count_bucket": "0 edits",
    "registration_dt": "2022-04-13T20:10:01.000Z"
  },
  "agent": {
    "client_platform": "mediawiki_js",
    "client_platform_family": "desktop_browser"
  },
  "http": {
    "request_headers": {
      "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.1823.37"
    }
  }
}
{
  "$schema": "/analytics/mediawiki/client/metrics_event/1.2.0",
  "dt": "2023-06-15T14:03:33.436Z",
  "name": "specialDiff.click.thank",
  "custom_data": {},
  "meta": {
    "stream": "mediawiki.special_diff_interactions",
    "domain": "en.wikipedia.beta.wmflabs.org",
    "id": "63e4af44-2416-473b-a8d3-8adab7a81bb0",
    "dt": "2023-06-15T14:03:38.794Z",
    "request_id": "6d553280-0b85-11ee-9931-897bd4c4e7d2",
    "topic": "eqiad.mediawiki.special_diff_interactions",
    "partition": 0,
    "offset": 27
  },
  "mediawiki": {
    "skin": "vector-2022",
    "version": "1.41.0-alpha",
    "is_production": false,
    "database": "enwiki"
  },
  "performer": {
    "is_logged_in": true,
    "groups": [
      "*",
      "user"
    ],
    "edit_count_bucket": "0 edits",
    "registration_dt": "2022-04-13T20:10:01.000Z"
  },
  "agent": {
    "client_platform": "mediawiki_js",
    "client_platform_family": "desktop_browser"
  },
  "http": {
    "request_headers": {
      "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.1823.37"
    }
  }
}

view history:

{
  "$schema": "/analytics/mediawiki/client/metrics_event/1.2.0",
  "dt": "2023-06-15T14:06:08.974Z",
  "name": "specialDiff.click.view_history",
  "custom_data": {},
  "meta": {
    "stream": "mediawiki.special_diff_interactions",
    "domain": "en.wikipedia.beta.wmflabs.org",
    "id": "77dc379a-b139-4746-87ac-2978eee423af",
    "dt": "2023-06-15T14:06:09.732Z",
    "request_id": "c74c5b10-0b85-11ee-9931-897bd4c4e7d2",
    "topic": "eqiad.mediawiki.special_diff_interactions",
    "partition": 0,
    "offset": 35
  },
  "mediawiki": {
    "skin": "vector-2022",
    "version": "1.41.0-alpha",
    "is_production": false,
    "database": "enwiki"
  },
  "performer": {
    "is_logged_in": true,
    "groups": [
      "*",
      "user"
    ],
    "edit_count_bucket": "0 edits",
    "registration_dt": "2022-04-13T20:10:01.000Z"
  },
  "agent": {
    "client_platform": "mediawiki_js",
    "client_platform_family": "desktop_browser"
  },
  "http": {
    "request_headers": {
      "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.1823.37"
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  }
}

contribs

{
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  "dt": "2023-06-15T14:09:35.914Z",
  "name": "specialDiff.click.contribs",
  "custom_data": {},
  "meta": {
    "stream": "mediawiki.special_diff_interactions",
    "domain": "en.wikipedia.beta.wmflabs.org",
    "id": "d7323bc7-77fc-4f85-9cad-6efd5bc9197c",
    "dt": "2023-06-15T14:09:37.100Z",
    "request_id": "42e63390-0b86-11ee-9931-897bd4c4e7d2",
    "topic": "eqiad.mediawiki.special_diff_interactions",
    "partition": 0,
    "offset": 36
  },
  "mediawiki": {
    "skin": "vector-2022",
    "version": "1.41.0-alpha",
    "is_production": false,
    "database": "enwiki"
  },
  "performer": {
    "is_logged_in": true,
    "groups": [
      "*",
      "user"
    ],
    "edit_count_bucket": "0 edits",
    "registration_dt": "2022-04-13T20:10:01.000Z"
  },
  "agent": {
    "client_platform": "mediawiki_js",
    "client_platform_family": "desktop_browser"
  },
  "http": {
    "request_headers": {
      "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.1823.37"
    }
  }
}

watchlist

{
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  "dt": "2023-06-15T14:10:27.167Z",
  "name": "specialDiff.click.watchlist",
  "custom_data": {},
  "meta": {
    "stream": "mediawiki.special_diff_interactions",
    "domain": "en.wikipedia.beta.wmflabs.org",
    "id": "9250dea5-8bf7-43da-98da-622654351457",
    "dt": "2023-06-15T14:10:53.037Z",
    "request_id": "70296bb0-0b86-11ee-9931-897bd4c4e7d2",
    "topic": "eqiad.mediawiki.special_diff_interactions",
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  },
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  },
  "performer": {
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    "groups": [
      "*",
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    ],
    "edit_count_bucket": "0 edits",
    "registration_dt": "2022-04-13T20:10:01.000Z"
  },
  "agent": {
    "client_platform": "mediawiki_js",
    "client_platform_family": "desktop_browser"
  },
  "http": {
    "request_headers": {
      "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.1823.37"
    }
  }
}

user page

{
  "$schema": "/analytics/mediawiki/client/metrics_event/1.2.0",
  "dt": "2023-06-15T14:11:56.627Z",
  "name": "specialDiff.click.user_link",
  "custom_data": {},
  "meta": {
    "stream": "mediawiki.special_diff_interactions",
    "domain": "en.wikipedia.beta.wmflabs.org",
    "id": "537b2480-a5ec-4c29-a34a-e7b854d1e6b2",
    "dt": "2023-06-15T14:11:58.116Z",
    "request_id": "96f38910-0b86-11ee-9931-897bd4c4e7d2",
    "topic": "eqiad.mediawiki.special_diff_interactions",
    "partition": 0,
    "offset": 38
  },
  "mediawiki": {
    "skin": "vector-2022",
    "version": "1.41.0-alpha",
    "is_production": false,
    "database": "enwiki"
  },
  "performer": {
    "is_logged_in": true,
    "groups": [
      "*",
      "user"
    ],
    "edit_count_bucket": "0 edits",
    "registration_dt": "2022-04-13T20:10:01.000Z"
  },
  "agent": {
    "client_platform": "mediawiki_js",
    "client_platform_family": "desktop_browser"
  },
  "http": {
    "request_headers": {
      "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.1823.37"
    }
  }
}

Log additional click events on Special:DiffClosed, ResolvedPublic5 Estimated Story PointsActions