Every time we load the RHS, we used to load the FULL thread always. Although
the actual ThreadViewer React component is virtualized, and the server side
API call is paginated, we still went through all the pages, to get the full
thread and passed it on to the ThreadViewer. This would be for first loads,
and subsequent loads of the same thread.
This was a bug originally, but then it was a necessity after we applied websocket event scope because
now we won't get emoji reactions of a thread if the user is not on the thread.
To fix that, we enhance the thread loading functionality by adding support for fetching
thread updates based on the UpdateAt timestamp. Now, for subsequent loads,
we only get the changed posts in a thread. The implementation:
- Adds new API parameters: fromUpdateAt and updatesOnly to the GetPostThread endpoint
- Updates database queries to support sorting and filtering by UpdateAt
- Implements thread state management to track the last update timestamp
- Adds client-side support to use incremental loading for improved performance
- Ensures proper validation for parameter combinations and error handling
This change enables more efficient thread loading, particularly for long threads
with frequent updates, by only fetching posts that have been updated since the
last view.
Caveats: For delta updates, the SQL query won't use the best index possible
because we have an index for (CreateAt, Id), but no index for (UpdateAt, Id).
However, from my tests, it is not as bad as it looks:
```
[loadtest] # EXPLAIN (ANALYZE, BUFFERS) SELECT * FROM Posts WHERE Posts.DeleteAt = 0 AND Posts.RootId = 'qbr5gctu9iyg8c36hpcq6f3w8e' AND Posts.UpdateAt > 1623445795824 ORDER BY UpdateAt ASC, Id ASC LIMIT 61;
QUERY PLAN
-------------------------------------------------------------------------------------------------------------------------------------------------
Limit (cost=8.31..8.31 rows=1 width=216) (actual time=0.047..0.049 rows=0 loops=1)
Buffers: shared hit=2
-> Sort (cost=8.31..8.31 rows=1 width=216) (actual time=0.044..0.045 rows=0 loops=1)
Sort Key: updateat, id
Sort Method: quicksort Memory: 25kB
Buffers: shared hit=2
-> Index Scan using idx_posts_root_id_delete_at on posts (cost=0.28..8.30 rows=1 width=216) (actual time=0.031..0.032 rows=0 loops=1)
Index Cond: (((rootid)::text = 'qbr5gctu9iyg8c36hpcq6f3w8e'::text) AND (deleteat = 0))
Filter: (updateat > '1623445795824'::bigint)
Buffers: shared hit=2
Planning:
Buffers: shared hit=3
Planning Time: 0.508 ms
Execution Time: 0.106 ms
(14 rows)
```
We still get an index scan with index cond. Although there's a filter element, but atleast we get the whole thread with the index.
My thinking is that while the whole thread might be large, but after that, updates on a thread should be incremental.
Therefore, we should be okay without adding yet another index on the posts table.
This is just the first step in what could be potentially improved further.
1. We shouldn't even be loading the full thread always. But rather let the virtualized viewer
load more posts on demand.
2. If a post has been just reacted to, then we need not send the whole post down, but just the
reaction. This further saves bandwidth.
https://mattermost.atlassian.net/browse/MM-56548
TBD: Add load-test coverage to update the thread loading code
```release-note
NONE
```
---------
Co-authored-by: Mattermost Build <build@mattermost.com>
* Updated patch/update post API to allow file modification (#29447)
* WIP
* WIP
* Atatched new files ton post
* WIP: deleting removed files
* Deleted removed files and invalidated file metadata cache
* removed file ignore logif from update post API
* Added TestFindExclusives
* Added tests for DeleteForPostByIds
* Added app layer tests
* Added tests
* Added API level tests
* test enhancements
* Fixed a test
* Edit history include file metadata (#29505)
* Send file metadata in edit history metadata
* Added app tests
* Added store tests
* Added tests for populateEditHistoryFileMetadata{
* Added cache to avoid repetitigve DB calls for edits with only message changes
* Added API tests
* i18m fix
* removed commented code
* Improved test helper
* Show attachments in edit history RHS (#29519)
* Send file metadata in edit history metadata
* Added app tests
* Added store tests
* Added tests for populateEditHistoryFileMetadata{
* Added cache to avoid repetitigve DB calls for edits with only message changes
* Added API tests
* i18m fix
* WIUP: displa files in edit
* removed commented code
* Displayed file in edit history
* Handled file icon
* Fixed closing history component on clicking on file
* Simplified selector
* Simplified selector
* Improved test helper
* Disabled action menu on edit history file
* Added tests
* Improved selector
* Updated snapshot
* review Fixes
* restructured componnets
* Updated test
* Updated test
* Restore post api (#29643)
* Restore post version API WIP
* Undelete files WIP
* Added store tests
* Created post restore API
* Updated updatepost safeUpdate signature
* review fixex and improvements
* Fixed an app test
* Added API laer tests
* Added API tests and OpenAPI specs
* Fixed a typo
* Allow editing files when editing posts (#29709)
* WIP - basic view files when editing post
* Cleanup
* bg color
* Added text editor tests for files
* WIP
* WIP
* removed debug log
* Allowed admin to add and remove files on someone else's post
* Handled drafts and scheduled posts
* linter fixes
* Updated snapshot
* server test fix
* CI
* Added doc
* Restore post api integration (#29719)
* WIP - basic view files when editing post
* Cleanup
* bg color
* Added text editor tests for files
* WIP
* WIP
* removed debug log
* Allowed admin to add and remove files on someone else's post
* Handled drafts and scheduled posts
* linter fixes
* Updated snapshot
* server test fix
* Used new API to restore post
* handled edut limit and undo
* lint fix
* added comments
* Fixed edit post item tests
* Fixed buttons
* Aded snapshots
* fix test
* Updated snapshot
* Minor fixes
* fixed snapshot
* Edit file dnd area (#29763)
* dnd wip
* DND continued
* Supported multiple unbind dragster funcs
* lint fixes
* Got center channel file drop working when editing a post
* file dnd working with center channel and rhs
* file dnd working with center channel and rhs
* removed unneeded stopPropogation calls
* cleanup
* DND overlay fix
* Lint fix
* Advanced text editor test updates for file upload overlay
* fixed use upload hook tests
* Updated some more snapshots
* minor cleanup
* Updated i18n
* removed need of array for dragster unbind events
* lint fixes
* edit history cursor
* Fixed bugu causing faliure to delete empty posts (#29778)
* Files in restore confirmation (#29781)
* Added files to restore post confirmation dialog
* Fixed post restore toast colors
* Fixed restore bug
* Fixed restore confirmation toast tests
* a11y improvement and modal width fix
* Edit attachment misc fixes (#29808)
* Removed single image actions in restore post confirmation dialog
* Fixed file drop overlay size and position
* Made edit indiator accessible
* Lint fix
* Added bunch of more tests
* ANother test migrated from enzyme to react testing library
* More test enhancements
* More test enhancements
* More test enhancements
* lint fixes
* Fixed a test
* Added missing snapshots
* Test fixes
* don't use old hardcoded rule for validating imported posts
* fix http verb in doc
* Use client config
* Handle local mode
* E2E tests
* Enforce default if unable to use real limit
* Unit tests
* Fix tests
* Use model.PostMessageMaxRunesV2 as lower default
* Update direct post message length validation
---------
Co-authored-by: Mattermost Build <build@mattermost.com>
Co-authored-by: streamer45 <cstcld91@gmail.com>
* Migrate feature/wrangler to mono-repo
* Add wrangler files
* Fix linters, types, etc
* Fix snapshots
* Fix playwright
* Fix pipelines
* Fix more pipeline
* Fixes for pipelines
* More changes for pipeline
* Fix types
* Add support for a feature flag, but leave it defaulted on for spinwick usage for now
* Update snapshot
* fix js error when removing last value of multiselect, support CSV marshaling to string array for textsetting
* Fix linter
* Remove TODO
* Remove another TODO
* fix tests
* Fix i18n
* Add server tests
* Fix linter
* Fix linter
* Use proper icon for dot menu
* Update snapshot
* Add Cypress UI tests for various entrypoints to move thread modal, split SCSS out from forward post into its own thing
* clean up
* fix linter
* More cleanup
* Revert files to master
* Fix linter for e2e tests
* Make ForwardPostChannelSelect channel types configurable with a prop
* Add missing return
* Fixes from PR feedback
* First batch of PR Feedback
* Another batch of PR changes
* Fix linter
* Update snapshots
* Wrangler system messages are translated to each user's locale
* Initially translate Wrangler into system locale rather than initiating user
* More fixes for PR Feedback
* Fix some server tests
* More updates with master. Fixes around pipelines. Enforce Enterprise license on front/back end
* Add tests for dot_menu
* More pipeline fixes
* Fix e2etests prettier
* Update cypress tests, change occurrences of 'Wrangler' with 'Move Thread'
* Fix linter
* Remove enterprise lock
* A couple more occurrences of wrangler strings, and one more enterprise lock
* Fix server tests
* Fix i18n
* Fix e2e linter
* Feature flag shouldn't be on by default
* Enable move threads feature in smoke tests (#25657)
* enable move threads feature
* add @prod tag
* Fix move_thread_from_public_channel e2e test
* Fix e2e style
---------
Co-authored-by: Mattermost Build <build@mattermost.com>
Co-authored-by: yasserfaraazkhan <attitude3cena.yf@gmail.com>
