We're changing the ping interval from 50s to 60s, because that's what
the mobile apps have hardcoded currently, and backwards-compatibility
is more important there than the web app's previously hardcoded 50s.
For PRESENCE_PING_INTERVAL_SECS, the previous value hardcoded in both
clients was 140s, selected as "plenty of network/other latency more
than 2 x ACTIVE_PING_INTERVAL_MS". This is a pretty aggressive value;
even a single request being missed or 500ing can result in a user
appearing offline incorrectly. (There's a lag of up to one full ping
interval between when the other client checks in and when you check
in, and so we'll be at almost 2 ping intervals when you issue your
next request that might get an updated connection time from that
user).
To increase failure tolerance, we want to change the offline
threshhold from 2 x ACTIVE_PING_INTERVAL + 20s to 3 x
ACTIVE_PING_INTERVAL + 20s, aka 140s => 200s, to be more robust to
temporary failures causing us to display other users as offline.
Since the mobile apps currently have 140s and 60s hardcoded, it should
be safe to make this particular change; the mobile apps will just
remain more aggressive than the web app in marking users offline until
it uses the new API parameters.
The end result in that Zulip will be slightly less aggressive at
marking other users as offline if they go off the Internet. We will
likely be able to tune ACTIVE_PING_INTERVAL downwards once #16381 and
its follow-ups are completed, because it'll likely make these requests
much cheaper.
As of the previous commit, the server provides these parameters in
page_params. The defaults match the values hard-coded in the webapp so
far - so get rid of the hard-coded values in favor of taking them from
page_params.
This old 300s value was meaningfully used in 2 places:
1. In the do_change_user_settings presence_enabled codepath when turning
a user invisible. It doesn't matter there, 140s is just since the
point is to make clients see this user as offline. And 140s is the
threshold used by clients (see the presence.js constant).
2. For calculating whether to set "offline" "status" in
result["presence"]["aggregated"] in get_presence_backend. It's fine
for this to become 140s, since clients shouldn't be looking at the
status value anymore anyway and just do their calculation based on
the timestamps.
Rename 'muting.py' to 'user_mutes.py' because it, now
, contains only user-mute related functions.
Includes minor refactoring needed after renaming the file.
This commit moves topic related stuff i.e. topic muting functions
to a separate file 'views/user_topics.py'.
'views/muting.py' contains functions related to user-mutes only.
This adds a new endpoint /jwt/fetch_api_key that accepts a JWT and can
be used to fetch API keys for a certain user. The target realm is
inferred from the request and the user email is part of the JWT.
A JSON containing an user API key, delivery email and (optionally)
raw user profile data is returned in response.
The profile data in the response is optional and can be retrieved by
setting the POST param "include_profile" to "true" (default=false).
Co-authored-by: Mateusz Mandera <mateusz.mandera@zulip.com>
- Updates `.prettierignore` for the new directory.
- Updates any reference to the API documentation directory for
markdown files to be `api_docs/` instead of `zerver/api/`.
- Removes a reference link from `docs/documentation/api.md` that
hasn't referenced anything in the text since commit 0542c60.
- Update rendering of API documentation for new directory.
Black 23 enforces some slightly more specific rules about empty line
counts and redundant parenthesis removal, but the result is still
compatible with Black 22.
(This does not actually upgrade our Python environment to Black 23
yet.)
Signed-off-by: Anders Kaseorg <anders@zulip.com>
These files are not Jinja2 templates, so there's no reason that they needed
to be inside `templates/zerver`. Moving them to the top level reflects their
importance and also makes it feel nicer to work on editing the help center content,
without it being unnecessary buried deep in the codebase.
Since we want to use `accounts/new/send_confirm` to know how many
users actually register after visiting the register page, we
added it to Google Tag Manager, but GTM tracks every user
registration separately due <email> in the URL
making it harder to track.
To solve this, we want to pass <email> as a GET parameter which
can be easily filtered inside GTM using a RegEx and all the
registrations can be tracked as one.
When file uploads are stored in S3, this means that Zulip serves as a
302 to S3. Because browsers do not cache redirects, this means that
no image contents can be cached -- and upon every page load or reload,
every recently-posted image must be re-fetched. This incurs extra
load on the Zulip server, as well as potentially excessive bandwidth
usage from S3, and on the client's connection.
Switch to fetching the content from S3 in nginx, and serving the
content from nginx. These have `Cache-control: private, immutable`
headers set on the response, allowing browsers to cache them locally.
Because nginx fetching from S3 can be slow, and requests for uploads
will generally be bunched around when a message containing them are
first posted, we instruct nginx to cache the contents locally. This
is safe because uploaded file contents are immutable; access control
is still mediated by Django. The nginx cache key is the URL without
query parameters, as those parameters include a time-limited signed
authentication parameter which lets nginx fetch the non-public file.
This adds a number of nginx-level configuration parameters to control
the caching which nginx performs, including the amount of in-memory
index for he cache, the maximum storage of the cache on disk, and how
long data is retained in the cache. The currently-chosen figures are
reasonable for small to medium deployments.
The most notable effect of this change is in allowing browsers to
cache uploaded image content; however, while there will be many fewer
requests, it also has an improvement on request latency. The
following tests were done with a non-AWS client in SFO, a server and
S3 storage in us-east-1, and with 100 requests after 10 requests of
warm-up (to fill the nginx cache). The mean and standard deviation
are shown.
| | Redirect to S3 | Caching proxy, hot | Caching proxy, cold |
| ----------------- | ------------------- | ------------------- | ------------------- |
| Time in Django | 263.0 ms ± 28.3 ms | 258.0 ms ± 12.3 ms | 258.0 ms ± 12.3 ms |
| Small file (842b) | 586.1 ms ± 21.1 ms | 266.1 ms ± 67.4 ms | 288.6 ms ± 17.7 ms |
| Large file (660k) | 959.6 ms ± 137.9 ms | 609.5 ms ± 13.0 ms | 648.1 ms ± 43.2 ms |
The hot-cache performance is faster for both large and small files,
since it saves the client the time having to make a second request to
a separate host. This performance improvement remains at least 100ms
even if the client is on the same coast as the server.
Cold nginx caches are only slightly slower than hot caches, because
VPC access to S3 endpoints is extremely fast (assuming it is in the
same region as the host), and nginx can pool connections to S3 and
reuse them.
However, all of the 648ms taken to serve a cold-cache large file is
occupied in nginx, as opposed to the only 263ms which was spent in
nginx when using redirects to S3. This means that to overall spend
less time responding to uploaded-file requests in nginx, clients will
need to find files in their local cache, and skip making an
uploaded-file request, at least 60% of the time. Modeling shows a
reduction in the number of client requests by about 70% - 80%.
The `Content-Disposition` header logic can now also be entirely shared
with the local-file codepath, as can the `url_only` path used by
mobile clients. While we could provide the direct-to-S3 temporary
signed URL to mobile clients, we choose to provide the
served-from-Zulip signed URL, to better control caching headers on it,
and greater consistency. In doing so, we adjust the salt used for the
URL; since these URLs are only valid for 60s, the effect of this salt
change is minimal.
Moving `/user_avatars/` to being served partially through Django
removes the need for the `no_serve_uploads` nginx reconfiguring when
switching between S3 and local backends. This is important because a
subsequent commit will move S3 attachments to being served through
nginx, which would make `no_serve_uploads` entirely nonsensical of a
name.
Serve the files through Django, with an offload for the actual image
response to an internal nginx route. In development, serve the files
directly in Django.
We do _not_ mark the contents as immutable for caching purposes, since
the path for avatar images is hashed only by their user-id and a salt,
and as such are reused when a user's avatar is updated.
The `django-sendfile2` module unfortunately only supports a single
`SENDFILE` root path -- an invariant which subsequent commits need to
break. Especially as Zulip only runs with a single webserver, and
thus sendfile backend, the functionality is simple to inline.
It is worth noting that the following headers from the initial Django
response are _preserved_, if present, and sent unmodified to the
client; all other headers are overridden by those supplied by the
internal redirect[^1]:
- Content-Type
- Content-Disposition
- Accept-Ranges
- Set-Cookie
- Cache-Control
- Expires
As such, we explicitly unset the Content-type header to allow nginx to
set it from the static file, but set Content-Disposition and
Cache-Control as we want them to be.
[^1]: https://www.nginx.com/resources/wiki/start/topics/examples/xsendfile/
When this code was moved from being in zerver in 21a2fd482e, it kept
the `if ZILENCER_ENABLED` blocks. Since ZILENCER and CORPORATE are
generally either both on or both off, the if statement became
mostly-unnecessary.
However, because tests cannot easily remove elements from
INSTALLED_APPS and re-determine URL resolution, we switch to checking
`if CORPORATE_ENABLED` as a guard, and leave these in-place.
The other side effect of this is that with e54ded49c4, most Zulip
deployments started to 404 requests for `/apps` instead of redirecting
them to `https://zulip.com/apps/` since they no longer had any path
configured for `/apps`. Unfortunately, this URL is in widespread use
in the app (e.g. in links from the Welcome Bot), so we should ensure
that it does successfully redirect.
Add the `/apps` path to `zerver`, but only if not CORPORATE_ENABLED,
so the URLs do not overlap.
Track `create_realm` and `new_realm_send_confirm` using
google analytics.
This will help us track number of users who want to
create a new Zulip organization.
As explained in 158287f998,
wantMessagesSigned can't be enabled globally (as it'll break setups with
IdPs that sign SAMLResponse assertions) - but is needed for
LogoutRequests, and will be for LogoutResponses in the SP-initiated SLO
flow in future commits.
We extract a function with the necessary hacky logic for re-use in the
SP-initiated SLO implementation.
Creates `static/images/authentication_backends` directory for icons
of backend authentication methods, which are used on the log-in page.
And updates the example documentation in the API `/server_settings`
endpoint.
Note that django_stubs_ext is required to be placed within common.in
because we need the monkeypatched types in runtime; django-stubs
itself is for type checking only.
In the future, we would like to pin to a release instead of a git
revision, but several patches we've contributed upstream have not
appeared in a release yet.
We also remove the type annotation for RealmAuditLog.event_last_message_id
here instead of earlier because type checking fails otherwise.
Fixes#11560.
This breaks an import cycle that prevented django-stubs from inferring
types for django.conf.settings.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
This breaks an import cycle that prevented django-stubs from inferring
types for django.conf.settings.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
This breaks an import cycle that prevented django-stubs from inferring
types for django.conf.settings.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
This breaks an import cycle that prevented django-stubs from inferring
types for django.conf.settings.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
This breaks an import cycle that prevented django-stubs from inferring
types for django.conf.settings.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
This commit brings AzureAD config in line with other backends:
- SOCIAL_AUTH_AZUREAD_OAUTH2_SECRET gets fetched in computed_settings.py
instead of default_settings, consistent with github/gitlab/etc.
- SOCIAL_AUTH_AZUREAD_OAUTH2_KEY gets fetched in default_settings via
get_secret(..., development_only=True) like other social backends, to
allow easier set up in dev environment, in the dev-secrets.conf file.
- The secret gets renamed from azure_oauth2_secret to
social_auth_azuread_oauth2_secret to have a consistent naming scheme with
other social backends and with the SOCIAL_AUTH_AZUREAD_OAUTH2_KEY
name. This is backwards-incompatible.
The instructions for setting it up are updated to fit how this is
currently done in AzureAD.
Creates `zerver.lib.url_redirects.py` to record old and new URLs
for documentation pages that have been renamed/moved and need URL
redirects.
This file is then used by `zproject.urls.py` to redirect links and
by `zerver.test.test_urls.py` to test that all of the old URLs
return a success response with a common page header/text depending
on the type of redirect (help center, policy, or API).
Adds a section to contributor docs on writing documentation for
how to use this redirect system when renaming a help center or api
documentation page.
Fixes#21946. Fixes#17897.
Django has always expected this, but Django 4.0 added a system check
that spews warnings in production.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Mateusz Mandera
Alex Vandiver
Abhijeet Prasad Bodas
Prakhar Pratyush
Anders Kaseorg
Alessandro Toppi
Lauryn Menard
Lauryn Menard
Aman Agrawal
PIG208