Adds a re-usable lockfile_nonblocking helper to context_managers.
Relying on naive `os.mkdir` is not enough especially now that the
successful operation of this command is necessary for push notifications
to work for many servers.
We can't use `lockfile` context manager from
`zerver.lib.context_managers`, because we want the custom behavior of
failing if the lock can't be acquired, instead of waiting.
That's because if an instance of this gets stuck, we don't want to start
queueing up more processes waiting forever whenever the cronjob runs
again and fail->exit is preferrable instead.
LoggingCountStats with a daily duration and that are directly stored
on the RealmCount table (not via aggregation in process_count_stat),
can be in a state, after the hourly cron job to update analytics
counts, where the logged value will be live-updated later, because
the end time for the stat is still in the future.
As these logging counts are designed to be used on the self-hosted
installation for either debugging or rate limiting, sending these
partial/incomplete counts to the bouncer has low value.
This commit adds a realm-level setting named
'zulip_update_announcements_stream' that configures the
stream to which zulip updates should be posted.
Fixes part of #28604.
- Adds instructions for downloading a zuliprc file for a bot or for
yourself.
- Updates the button label to "Download zuliprc", since that's the
filename it downloads.
Fixes#28881.
This commit renames the realm-level setting
'signup_notifications_stream' to 'signup_announcements_stream'.
The new name reflects better what the setting does.
This commit renames the realm-level setting 'notifications_stream'
to 'new_stream_announcements_stream'.
The new name reflects better what the setting does.
5c96f94206 mistakenly appended, rather than prepended, the edit to
the history. This caused AssertionErrors when attempting to view the
history of moved messages, which check that the `last_edit_time`
matches the timestamp of the first edit in the list.
Fix the ordering, and update the `edit_history` for messages that were
affected. We limit to only messages edited since the commit was
merged, since that helps bound the affected messages somewhat.
The widening of the time between when a process is marked for
reload (at Tornado startup) and when it sends reload events makes it
unlikely-to-impossible that a single `/` request will span both of
them, and thus hit the WebReloadClientError corner case.
Remove it, as it is not worth the complication. The bad behaviour it
is attempting to prevent (of a reload right after opening `/`) was
always still possible -- if the `/` request completed right before
Tornado restarted -- so it is not clear that it was ever worth the
complication.
Having a non-identity `cache_transformer` is no different from running
it on every row of the query_function. Simplify understanding of the
codepath used in caching by merging the pieces of code.
Rather than pass around a list of message objects in-memory, we
instead keep the same constructed QuerySet which includes the later
propagated messages (if any), and use that same query to pick out
affected Attachment objects, rather than limiting to the set of ids.
This is not necessarily a win -- the list of message-ids *may* be very
long, and thus the query may be more concise, easier to send to
PostgreSQL, and faster for PostgreSQL to parse. However, the list of
ids is almost certainly better-indexed.
After processing the move, the QuerySet must be re-defined as a search
of ids (and possibly a very long list of such), since there is no
other way which is guaranteed to correctly single out the moved
messages. At this point, it is mostly equivalent to the list of
Message objects, and certainly takes no less memory.
Rather than use `bulk_update()` to batch-move chunks of messages, use
a single SQL query to move the messages. This is much more efficient
for large topic moves. Since the `edit_history` field is not yet
JSON (see #26496) this requires that PostgreSQL cast the current data
into `jsonb`, append the new data (also cast to `jsonb`), and then
re-cast that as text.
For single-message moves, this _increases_ the SQL query count by one,
since we have to re-query for the updated data from the database after
the bulk update. However, this is overall still a performance
improvement, which improves to 2x or 3x for larger topic moves. Below
is a table of duration in seconds to run `do_update_message` to move a
topic to a new stream, based on messages in the topic, for before and
after this change:
| Topic size | Before | After |
| ---------- | -------- | ------- |
| 1 | 0.1036 | 0.0868 |
| 2 | 0.1108 | 0.0925 |
| 5 | 0.1139 | 0.0959 |
| 10 | 0.1218 | 0.0972 |
| 20 | 0.1310 | 0.1098 |
| 50 | 0.1759 | 0.1366 |
| 100 | 0.2307 | 0.1662 |
| 200 | 0.3880 | 0.2229 |
| 500 | 0.7676 | 0.4052 |
| 1000 | 1.3990 | 0.6848 |
| 2000 | 2.9706 | 1.3370 |
| 5000 | 7.5218 | 3.2882 |
| 10000 | 14.0272 | 5.4434 |
This applies access restrictions in SQL, so that individual messages
do not need to be walked one-by-one. It only functions for stream
messages.
Use of this method significantly speeds up checks if we moved "all
visible messages" in a topic, since we no longer need to walk every
remaining message in the old topic to determine that at least one was
visible to the user. Similarly, it significantly speeds up merging
into existing topics, since it no longer must walk every message in
the new topic to determine if the user could see at least one.
Finally, it unlocks the ability to bulk-update only messages the user
has access to, in a single query (see subsequent commit).
The problem was that earlier this was just an uncaught JsonableError,
leading to a full traceback getting spammed to the admins.
The prior commit introduced a clear .code for this error on the bouncer
side, meaning the self-hosted server can now detect that and handle it
nicely, by just logging.error about it and also take the opportunity to
adjust the realm.push_notifications_... flags.
- Renames "Bots and integrations" to "Bots overview" everywhere
(sidebar, page title, page URL).
- Adds a copy of /api/integrations-overview (symbolic link) as the
second page in the Bots & integrations section, titled
"Integrations overview".
Fixes#28758.
David Rosa
Mateusz Mandera
Alex Vandiver
Anders Kaseorg
Lauryn Menard
Prakhar Pratyush
Alya Abbott