It's theoretically possible to have configured a Zulip server where
the system bots live in the same realm as normal users (and may have
in fact been the default in early Zulip releases? Unclear.). We
should handle these without the migration intended to clean up naming
for the system bot realm crashing.
Fixes#13660.
We now incorporate people.get_message_people() in our
logic for compose/PM typeaheads. This not only gives
users better results in some cases, but it will also
improve performance for large realms in some cases.
We'll use this in two places coming up, so it's
worth extracting, plus I wanted to add the
fairly lengthy comment here. (Tim, feel free
to edit down the comment as you see fit).
A recent commit removed test coverage for the
actual filtering/sorting of mention typeaheads
when you did a non-silent method. This commit
now tests that important step again.
Note that we also had (and still have) tests
that make sure the is_silent flag is set
correctly by get_candidates.
We don't have a true full-stack test, but those
can be quite tricky to set up and maintain.
This is relatively unobtrusive, and we don't send
anything to the server.
But any user can now enter blueslip.timings in the
console to see a map of how long things take in
milliseconds. We only record one timing per
event label (i.e. the most recent).
It's pretty easy to test this by just clicking
around. For 300 users/streams most things are
fast except for:
- initialize_everything
- manage streams (render_subscriptions)
Both do lots of nontrivial work, although
"manage streams" is a bit surprising, since
we're only measuring how long to build the
HTML from the templates (whereas the real
time is probably browser rendering costs).
This change sets us up to optimize how we
filter users in the admin user settings.
See #13554 for more context on the user
facing issues.
This fix is basically three related things:
- Add filterer options to list_render.
- Add helper method to people.js.
- Use filterer in settings_users.js.
The filter "callback" was only a "callback" in the
most general sense of the word.
It's just a filter predicate that returns a bool.
This is to prepare for another filtering option,
where the caller can filter the whole list
themselves. I haven't figured out what I will name
the new option yet, but I know I want to make the
two options have specific names.
We are already providing callbacks everywhere, so
it would be nice to eliminate some dead code.
This also speeds things up ever so slightly (no
longer type-checking the option every time through
the loop).
We also split out exports.filter to make unit testing
easier. The function seems kinda silly now, being so
small, but I hope to add another filtering option soon.
It's a bit confusing when you read this code to know
where the original list was created. I'm not a huge
fan of the cache scheme here, but it does seem to
work for live updates.
Zulip has had a small use of WebSockets (specifically, for the code
path of sending messages, via the webapp only) since ~2013. We
originally added this use of WebSockets in the hope that the latency
benefits of doing so would allow us to avoid implementing a markdown
local echo; they were not. Further, HTTP/2 may have eliminated the
latency difference we hoped to exploit by using WebSockets in any
case.
While we’d originally imagined using WebSockets for other endpoints,
there was never a good justification for moving more components to the
WebSockets system.
This WebSockets code path had a lot of downsides/complexity,
including:
* The messy hack involving constructing an emulated request object to
hook into doing Django requests.
* The `message_senders` queue processor system, which increases RAM
needs and must be provisioned independently from the rest of the
server).
* A duplicate check_send_receive_time Nagios test specific to
WebSockets.
* The requirement for users to have their firewalls/NATs allow
WebSocket connections, and a setting to disable them for networks
where WebSockets don’t work.
* Dependencies on the SockJS family of libraries, which has at times
been poorly maintained, and periodically throws random JavaScript
exceptions in our production environments without a deep enough
traceback to effectively investigate.
* A total of about 1600 lines of our code related to the feature.
* Increased load on the Tornado system, especially around a Zulip
server restart, and especially for large installations like
zulipchat.com, resulting in extra delay before messages can be sent
again.
As detailed in
https://github.com/zulip/zulip/pull/12862#issuecomment-536152397, it
appears that removing WebSockets moderately increases the time it
takes for the `send_message` API query to return from the server, but
does not significantly change the time between when a message is sent
and when it is received by clients. We don’t understand the reason
for that change (suggesting the possibility of a measurement error),
and even if it is a real change, we consider that potential small
latency regression to be acceptable.
If we later want WebSockets, we’ll likely want to just use Django
Channels.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
Currently, if we change stream we see the immediate saving of stream, but
it is more convenient to have "Save" and "Discard" buttons as we use
everywhere else in the organization setting subsystem.
This is a preliminary commit for further commits where we will be using the
newly created function `save_discard_widget_status_handler` in click
handler for changing the notification stream.
This refactors `discard_property_element_changes` and
`check_property_changed` function to move conditional statements of
properties that need to be handled separately. It's a preliminary commit in
the series of using save/discard widget for notification stream setting.
As the part of making notification stream settings to change using
"save/discard" widget instead of immediate saving, we need to access the
stream id which is being selected at the moment.
(This is another preliminary commit in the direction of having
"save/discard" widget show up rather than saving immediately.)
The code for selecting and processing the stream for both types of
notifications is almost the same, so de-duplicated.
For "New stream notifications" and "New user notifications" it is more
intuitive to just use the new system for showing success/saving status
feedback.
I added this tool a few years ago, and I did have
a vision for how it would improve our codebase, but
I can't remember exactly where I was going with it.
At this point the tool is just a little too noisy
to be helpful. An example of it creating confusion
was a recent PR where somebody was patching
user_circle_class in the PM list, and we already
had similar code in the buddy list, because they
use the same CSS. I mean, there was possibly a way
that the code could have been structured to remove
some of the duplication, but it probably would have
just moved the complexity around.
I just don't think it's worth maintaining the tool
at this point.
Fixes#13416
We used to search only one level in depth through the MIME structure,
and thus would miss attachments that were nested deeper (which can
happen with some email clients). We can take advantage of message.walk()
to iterate through each MIME part.
return in that loop was a bug, which would lead to the To: header not
being set even though data['recipient'] = str(message['To']) is being
run next, thus requiring the header. We can remove the return
statement and now the loop will overwrite all the potentially
troublesome headers.
With LDAP authentication, we don't currently have a good way to
support the default stream groups feature.
The old behavior was just to assume a user select every default stream
group, which seems wrong; since we didn't prompt the user about these,
we should just ignore the feature.
This fixes the error where we pass `user_id` of 'string' type as the
argument instead of 'integer' to `exports.get_person_from_user_id` which
further passes `user_id` to InDict.has() function which accepts integer
argument only.
Extracting the function makes it a bit easier to
test and use in a generic way.
Also, I wanted this to live in stream_data, so that
it's easier to find if we change how we model
subscriber data.
Finally, I use _.every to do the subset check
instead of `_.difference`, since _.difference
is actually N-squared:
_.difference = restArguments(function(array, rest) {
rest = flatten(rest, true, true);
return _.filter(array, function(value){
return !_.contains(rest, value);
});
});
And we don't actually want to build a list only
to check that it's zero vs. nonzero length.
We now do this, which short circuits as soon
as it finds any key that is only in sub1:
return _.every(sub1.subscribers.keys(), (key) => {
return sub2_set.has(key);
});
First, there are no more convoluted signals.
We also simplify the parameter to just the "mentioned"
object corresponding to either a user or a broadcast
mention.
For the user group scenario, this has always been dead
code, which you only realized when you got to the comment
at the bottom. Now we actually do nothing.
And I moved the relevant commment to the
the typeahead code (with new wording).
I also moved the is_silent check to the caller. I don't
feel too strongly about that either way. It's kind of silly
to call a function only to give that function an additional
responsibility to worry about. On the other hand, I see
the logic of that function enforcing everything. I went
with the former for now.
Arguably we should have a warning for silent mentions,
since doing a silent mention of somebody not on a stream
is a good indication of a typo. I do understand the use
case, but the user can always ignore the warning. Anyway,
we have decent test coverage on this.
This isn't really an extraction; it's more giving
a name to an anonymous function and moving it to
higher module scope.
We convert this to an ordinary function call, which
allows us to move it out of intialize().
Since there's just one simple parameter now (linked_stream),
we can avoid some error checking.
We also avoid the comment that describes the function,
since it now has a name.
And then one minor tweak is to do the inexpensive
`invite_only` higher in the function. This will be
a nice speedup when you link to really large public
streams.
The unit tests are also a bit easier to read now--less
setup and more explicit names.
This is a preparatory commit for using isort for sorting all of our
imports, merging changes to files where we can easily review the
changes as something we're happy with.
These are also files with relatively little active development, which
means we don't expect much merge conflict risk from these changes.
This is easier to read and faster, because it
avoids some unnecessary encoding on the pm-with
part, plus just a lot of extra logic that amounts
to just appending the slug.
Performance for this function is relevant because it is used
for every user every time we rerender the right sidebar.
Previously, if you tried to invite a user whose account had been
deactivated, we didn't provide a clear path forward for reactivating
the users, which was confusing.
We fix this by plumbing through to the frontend the information that
there is an existing user account with that email address in this
organization, but that it's deactivated. For administrators, we
provide a link for how to reactivate the user.
Fixes#8144.
This fixes a similar problem to the last commit; we don't use
memcached with the test database, so we don't need to flush memcached
when rebuilding it.
(And if we try, we'll get exceptions trying to access the relevant
settings).
Our recent fixes to using the system's configured memcached settings
broke populate_db, because its hacky clear_database helper is called
with a hacked-up settings module.
We fix this by first moving this out-of-place code from models.py into
populate_db, and then saving the settings required to access memcached
so that we can use them in clear_database.
We also fix a mypy erorr in flush-memcached that matches the same
issue fixed in clear_database.
This experimental setting disables sending private messages in Zulip
in a crude way (i.e. users get an error when they try to send one).
It makes no effort to adjust the UI to avoid advertising the idea of
sending private messages.
Fixes#6617.
Tim Abbott
Steve Howell
Anders Kaseorg
Pragati Agrawal
Mateusz Mandera
Tlazypanda