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discourse/app/services/upcoming_changes/action/track_removed_changes.rb
Martin Brennan fb9bb31983
FEATURE: Notify admins of upcoming changes and log events (#37003)
This commit adds several pieces of functionality to help keep admins
in the loop about upcoming changes.

First of all, there is a new initializer on boot that will notify admins
about
newly available upcoming changes, as well as log removed changes and
status movement of existing changes.

* When there is a new upcoming change, we only notify admins about
   it when the status is the `promote_upcoming_changes_on_status` - 1,
   e.g. if `promote_upcoming_changes_on_status` is `beta` then we only
   tell admin about the change once it has reached `alpha`. This means
   we may log the `added` event in one deploy, but only actually notify
   admins in a subsequent deploy.
* We log removed upcoming changes so we can automatically delete old
   site setting data in a future job as needed.

We also now  notify  admins when  upcoming changes are automatically
promoted to enabled based on the site's
`promote_upcoming_changes_on_status`:

<img width="378" height="600" alt="image"
src="https://github.com/user-attachments/assets/4200fbee-9990-4bbc-a378-85946e631e77"
/>

In addition, we now show an indicator in the admin sidebar
if there are new upcoming changes that have been added since
they last visited the upcoming change config page. This data
is stored in a user custom field, because Redis is ephemeral,
and storing in the User table is overkill because 99% of users
are not staff:

<img width="248" height="112" alt="image"
src="https://github.com/user-attachments/assets/4c3d3cf7-ac39-45f8-a2c8-a049cb85b8e9"
/>

Finally, this commit moves both the Track and Promote initializer
logic behind a `DistributedMutex`, we don't want multiple processes
running the same logic here, it needs to be only once.

---------

Co-authored-by: Loïc Guitaut <loic@discourse.org>
Co-authored-by: Joffrey JAFFEUX <j.jaffeux@gmail.com>
2026-01-21 12:45:54 +10:00

33 lines
1.1 KiB
Ruby
Vendored

# frozen_string_literal: true
# Intended to be called from UpcomingChanges::Track service,
# not standalone.
#
# Lookup any event_type: added (0) events and compare with removed (1) events
# * If there are any added that are no longer in SiteSetting.upcoming_change_site_settings
# with no corresponding removed (1) event, create a removed event for them.
#
# We do not need to notify admins about removed changes.
class UpcomingChanges::Action::TrackRemovedChanges < Service::ActionBase
def call
previously_added_changes.filter_map do |change_name|
next if SiteSetting.upcoming_change_site_settings.include?(change_name)
next if previously_removed_changes.include?(change_name)
UpcomingChangeEvent.create!(event_type: :removed, upcoming_change_name: change_name)
change_name
end
end
private
def previously_added_changes
@previously_added_changes ||=
UpcomingChangeEvent.added.pluck(:upcoming_change_name).uniq.map(&:to_sym)
end
def previously_removed_changes
@previously_removed_changes ||=
UpcomingChangeEvent.removed.pluck(:upcoming_change_name).uniq.map(&:to_sym)
end
end