At the time of writing, this is how the `TopicPosterSerializer` looks
like:
```
class TopicPosterSerializer < ApplicationSerializer
attributes :extras, :description
has_one :user, serializer: PosterSerializer
has_one :primary_group, serializer: PrimaryGroupSerializer
has_one :flair_group, serializer: FlairGroupSerializer
end
```
Within `PosterSerializer`, the `primary_group` and `flair_group`
association is requested on the `user` object. However, the associations
have not been loaded on the `user` object at this point leading to the
N+1 queries problem. One may wonder
why the associations have not been loaded when the `TopicPosterSerializer`
has `has_one :primary_group` and `has_one :flair_group`. It turns out that `TopicPoster`
is just a struct containing the `user`, `primary_group` and
`flair_group` objects. The `primary_group` and `flair_group`
ActiveRecord objects are loaded seperately in `UserLookup` and not preloaded when querying for
the users. This is done for performance reason so that we are able to
load the `primary_group` and `flair_group` records in a single query
without duplication.
The client already has all the information about the current user so
there is no need for us to be serializing the current `User` object each
time per channel that is preloaded.
In production, profiling shows that this unneeded serializing
adds a roughly 5% overhead to a request.
We were adding to the resolver's work queue before setting up the `@lookup` and `@parent` information. That could lead to the lookup being performed on the wrong (or `nil`) hostname. This also lead to some flakiness in specs.
This task sometimes fails in CI due to temporary network issues. Retrying twice should help resolve those situations without needing to manually restart the job.
- chat-message is not using chat-api yet and the `jsonMode` shouldn't have been added
- correctly error on `getChannel` not found
- adds/correct relevant system tests
This test occasionally fails in CI. I haven't been able to reproduce the issue locally. This logging will print some extra information when the assertion fails.
Note this is a very large PR, and some of it could have been splited, but keeping it one chunk made it to merge conflicts and to revert if necessary. Actual new code logic is also not that much, as most of the changes are removing js tests, adding system specs or moving things around.
To make it possible this commit is doing the following changes:
- converting (and adding new) existing js acceptances tests into system tests. This change was necessary to ensure as little regressions as possible while changing paradigm
- moving away from store. Using glimmer and tracked properties requires to have class objects everywhere and as a result works well with models. However store/adapters are suffering from many bugs and limitations. As a workaround the `chat-api` and `chat-channels-manager` are an answer to this problem by encapsulating backend calls and frontend storage logic; while still using js models.
- dropping `appEvents` as much as possible. Using tracked properties and a better local storage of channel models, allows to be much more reactive and doesn’t require arbitrary manual updates everywhere in the app.
- while working on replacing store, the existing work of a chat api (backend) has been continued to support more cases.
- removing code from the `chat` service to separate concerns, `chat-subscriptions-manager` and `chat-channels-manager`, being the largest examples of where the code has been rewritten/moved.
Future wok:
- improve behavior when closing/deleting a channel, it's already slightly buggy on live, it's rare enough that it's not a big issue, but should be improved
- improve page objects used in chat
- move more endpoints to the API
- finish temporarily skipped tests
- extract more code from the `chat` service
- use glimmer for `chat-messages`
- separate concerns in `chat-live-pane`
- eventually add js tests for `chat-api`, `chat-channels-manager` and `chat-subscriptions-manager`, they are indirectly heavy tested through system tests but it would be nice to at least test the public API
<!-- NOTE: All pull requests should have tests (rspec in Ruby, qunit in JavaScript). If your code does not include test coverage, please include an explanation of why it was omitted. -->
Follow-up to 8db1f1892d,
this makes the hashtag autocomplete scrolling with arrow
keys work with the new fadeout element that is now used
for the scroll container.
We were using the `for_input: true` param when calling
DiscourseTagging, which is really meant for selecting tags
in the UI, which often need a parent tag selected first
before the child tags in tag group will show. We just
want to show all tags regardless of grouping in hashtag
search.`
It was redefining rather than including them. It was causing this warning:
```
WARNING: Shared example group suspension of active user possible was defined without a block and will have no effect. Please define a block or remove the definition
```
* DEV: Fix png optimization test flakyness
Update fixture with oxipng 7
This test broke when the pngoptimizer got better so the pre-optimized png in the fixtures was compressed further on upload creation, breaking the expected size.
We generally do not return muted child categories to the user
if they have muted the parent category, this commit respects that
rule for CategoryHashtagDataSource
* UX: Wizard Step Enhancements
- Remove illustrations
- Add Emoji graphic to top of steps
- Add description below step title
- Move point of contact to last step
* Move step count to header, plus some button navigation tweaks
* add remaining emoji to step headers
* fix button logic on steps
* Update Point of Contact
* remove automated messages field
* adjust styling for counter, title, and emoji
* Update wording for logos
* Fix tests
* fix prettier
* fix specs
* set same with for steps except for styling screen
* use sentence case; remove duplicate copy under your organization fields
* fix missing buttons on small screens
* add spacing to buttons; adjust font weight to labels
* adjust styling for community logo step; use sentence case for button
* update copy for point of contact text helper
* use sentence case for field labels
* fix ui tests
* use btn-back class to fix ui tests
* reduce bottom margin for toggle fields
* clean up
Co-authored-by: Ella <ella.estigoy@gmail.com>
Prior to this change, each request executed 2 Redis calls per chat channel
that was loaded. The number of Redis calls quickly adds up once a user
is following multiple channels.
This commit adds an index for the query which the chat plugin executes
multiple times when preloading user data in `Chat::ChatChannelFetcher.unread_counts`.
Sample query plan from a query I grabbed from one of our production
instance.
Before:
```
QUERY PLAN
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
GroupAggregate (cost=10.77..696.67 rows=7 width=16) (actual time=7.735..7.736 rows=0 loops=1)
Group Key: cc.id
-> Nested Loop (cost=10.77..696.54 rows=12 width=8) (actual time=7.734..7.735 rows=0 loops=1)
Join Filter: (cc.id = cm.chat_channel_id)
-> Nested Loop (cost=0.56..76.44 rows=1 width=16) (actual time=0.011..0.037 rows=7 loops=1)
-> Index Only Scan using chat_channels_pkey on chat_channels cc (cost=0.28..22.08 rows=7 width=8) (actual time=0.004..0.014 rows=7 loops=1)
Index Cond: (id = ANY ('{192,300,228,727,8,612,1633}'::bigint[]))
Heap Fetches: 0
-> Index Scan using user_chat_channel_unique_memberships on user_chat_channel_memberships uccm (cost=0.28..7.73 rows=1 width=8) (actual time=0.003..0.003 rows=1 loops=7)
Index Cond: ((user_id = 1338) AND (chat_channel_id = cc.id))
-> Bitmap Heap Scan on chat_messages cm (cost=10.21..618.98 rows=89 width=12) (actual time=1.096..1.097 rows=0 loops=7)
Recheck Cond: (chat_channel_id = uccm.chat_channel_id)
Filter: ((deleted_at IS NULL) AND (user_id <> 1338) AND (id > COALESCE(uccm.last_read_message_id, 0)))
Rows Removed by Filter: 2085
Heap Blocks: exact=7106
-> Bitmap Index Scan on index_chat_messages_on_chat_channel_id_and_created_at (cost=0.00..10.19 rows=270 width=0) (actual time=0.114..0.114 rows=2085 loops=7)
Index Cond: (chat_channel_id = uccm.chat_channel_id)
Planning Time: 0.408 ms
Execution Time: 7.762 ms
(19 rows)
```
After:
```
QUERY PLAN
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
GroupAggregate (cost=5.84..367.39 rows=7 width=16) (actual time=0.130..0.131 rows=0 loops=1)
Group Key: cc.id
-> Nested Loop (cost=5.84..367.26 rows=12 width=8) (actual time=0.129..0.130 rows=0 loops=1)
Join Filter: (cc.id = cm.chat_channel_id)
-> Nested Loop (cost=0.56..76.44 rows=1 width=16) (actual time=0.038..0.069 rows=7 loops=1)
-> Index Only Scan using chat_channels_pkey on chat_channels cc (cost=0.28..22.08 rows=7 width=8) (actual time=0.011..0.022 rows=7 loops=1)
Index Cond: (id = ANY ('{192,300,228,727,8,612,1633}'::bigint[]))
Heap Fetches: 0
-> Index Scan using user_chat_channel_unique_memberships on user_chat_channel_memberships uccm (cost=0.28..7.73 rows=1 width=8) (actual time=0.006..0.006 rows=1 loops=7)
Index Cond: ((user_id = 1338) AND (chat_channel_id = cc.id))
-> Bitmap Heap Scan on chat_messages cm (cost=5.28..289.71 rows=89 width=12) (actual time=0.008..0.008 rows=0 loops=7)
Recheck Cond: ((chat_channel_id = uccm.chat_channel_id) AND (id > COALESCE(uccm.last_read_message_id, 0)) AND (deleted_at IS NULL))
Filter: (user_id <> 1338)
-> Bitmap Index Scan on index_chat_messages_on_chat_channel_id_and_id (cost=0.00..5.26 rows=90 width=0) (actual time=0.008..0.008 rows=0 loops=7)
Index Cond: ((chat_channel_id = uccm.chat_channel_id) AND (id > COALESCE(uccm.last_read_message_id, 0)))
Planning Time: 1.217 ms
Execution Time: 0.188 ms
(17 rows)
```
* DEV: Skip push notifications for active online users
Currently, users with active push subscriptions get push notifications
regardless of their "presence" on the site.
This change introduces a `push_notification_time_window_mins`
site setting which is used in conjunction with a user's `last_seen_at` to
determine if push notifications should be sent. A user is considered to
be actively online if their `last_seen_at` is within `push_notification_time_window_mins`
minutes. `push_notification_time_window_mins` is set to 10 by default.
* DEV: Remove client param for push_notification_time_window_mins site setting
Co-authored-by: Bianca Nenciu <nbianca@users.noreply.github.com>
Co-authored-by: Bianca Nenciu <nbianca@users.noreply.github.com>
Alan Guo Xiang Tan
Joffrey JAFFEUX
Rafael dos Santos Silva
Bianca Nenciu
David Taylor
Penar Musaraj
Andrei Prigorshnev
Martin Brennan
Ella E
Jarek Radosz
dependabot[bot]
Discourse Translator Bot
chapoi
Blake Erickson
Kris
Selase Krakani
Daniel Waterworth