We previously forked tornado.autoreload to work around a problem where
it would crash if you introduce a syntax error and not recover if you
fix it (https://github.com/tornadoweb/tornado/issues/2398).
A much more maintainable workaround for that issue, at least in
current Tornado, is to use tornado.autoreload as the main module.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Unless this was working around a specific bug that has somehow
persisted for eight years, this was just pointlessly defeating
Python’s bytecode cache every time you started the dev server.
This reverts commits deffda072f,
59228f7458, and
ae45217671.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
When the upstream provides a chunked response, proxying this header
causes a protocol-level miscommunication.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
These changes are all independent of each other; I just didn’t feel
like making dozens of commits for them.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Mypy can’t follow absolute imports based on directories other than the
root. This was hiding some type errors due to ignore_missing_imports.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Thumbor and tc-aws have been dragging their feet on Python 3 support
for years, and even the alphas and unofficial forks we’ve been running
don’t seem to be maintained anymore. Depending on these projects is
no longer viable for us.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
I have updated `tools/run-dev.py` to output the correct subdomain such as
`http://zulip.username.zulipdev.org` so that the user knows the correct
subdomain to access the Zulip Dev realm on.
Because the logic in print_listeners doesn't have access to computed
settings in dev_settings.py, we need to duplicate the special
IS_DEV_DROPLET logic for computing the default hostname.
There's still a secondary problem that this URL 404s.
This commit renames --force argument used with various tests to
--skip-provision-check. As a consequence of this name change all other
files that set --force option for the test commands have been updated.
This change is done in order to provide more clarity for using this
option for runnning tests.
This commit addresses issue #17455.
This commit moves --force option used with various tests to
test-scripts.py to have it alongside the logic that does provisioning
status assertion.
This is a step towards providing more clarity over use of this
argument with tests as asked in issue #17455.
In addition to being generally more correct, this works around a bug
in Node.js that causes webpack-dev-server to corrupt the terminal
state when exiting as a background process.
https://github.com/nodejs/node/issues/35536
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Now that all casper tests have been migrated to
puppeteer, there's no need for having casper
related things.
Removed the casperjs package and removed/replaced
casper in few places with puppeteer.
Only removed few of them which I'm confident
about. Also didn't make any changes in docs
as it would be easier to remove them while
adding puppeteer docs.
Use read-only types (List ↦ Sequence, Dict ↦ Mapping, Set ↦
AbstractSet) to guard against accidental mutation of the default
value.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Fixes#2665.
Regenerated by tabbott with `lint --fix` after a rebase and change in
parameters.
Note from tabbott: In a few cases, this converts technical debt in the
form of unsorted imports into different technical debt in the form of
our largest files having very long, ugly import sequences at the
start. I expect this change will increase pressure for us to split
those files, which isn't a bad thing.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Automatically generated by the following script, based on the output
of lint with flake8-comma:
import re
import sys
last_filename = None
last_row = None
lines = []
for msg in sys.stdin:
m = re.match(
r"\x1b\[35mflake8 \|\x1b\[0m \x1b\[1;31m(.+):(\d+):(\d+): (\w+)", msg
)
if m:
filename, row_str, col_str, err = m.groups()
row, col = int(row_str), int(col_str)
if filename == last_filename:
assert last_row != row
else:
if last_filename is not None:
with open(last_filename, "w") as f:
f.writelines(lines)
with open(filename) as f:
lines = f.readlines()
last_filename = filename
last_row = row
line = lines[row - 1]
if err in ["C812", "C815"]:
lines[row - 1] = line[: col - 1] + "," + line[col - 1 :]
elif err in ["C819"]:
assert line[col - 2] == ","
lines[row - 1] = line[: col - 2] + line[col - 1 :].lstrip(" ")
if last_filename is not None:
with open(last_filename, "w") as f:
f.writelines(lines)
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
For basic testing (either manual or automated), we
generally only need the server and tornado running.
Obviously, it's nice to test the complete system,
but if you're on a slow PC, the overhead can be
annoying.
Note that we don't launch any of these processes
in `--streamlined` mode:
process_queue
process_fts_updates
deliver_scheduled_messages
thumbor
And then by not launching process_queue, we avoid
several child processes.
Basic functionality like sending messages will
still work here.
The streamlined mode may be helpful in debugging
our generally slow server startup time. Obviously,
some of the problem with startup is the auxiliary
processes here, but removing them as a variable
could help us focus on getting the core stuff fast.
Note that we still have the webpack watcher running
in streamlined mode.
For the particular case of thumbor, note that we
modify the proxy server to explicitly print and
return an error if we get a `/thumbor/*` request.
We clean up the code related to launching
processes here.
We extract:
server_processes
We also extract these helper for webpack
stuff:
do_one_time_webpack_compile
start_webpack_watcher
And then we move the code to actually launch
them lexically within the file (so as not to
be obscured by various function definitions).
Here is the new output for displaying ports:
Zulip services will listen on ports:
9991: web proxy
9992: Django
9993: Tornado
9994: webpack
9995: Thumbor
Note to Vagrant users: Only the proxy port (9991) is exposed.
I tone down the yellow for the Vagrant warning, and I show
the web proxy in cyan to emphasize it.
I also extracted the code into a function, and I don't call
that function until after `app.listen()`. (The users probably
won't notice much difference in the timing of this message, but
the message won't show if the `listen` step fails for some
reason, which I think is what we want here.)
We remove the import-tools code that was plunked
right into the middle of our command line
arguments.
Then we add a local var called `DESCRIPTION` to
fix some ugly code formatting, and we stop with the
unnecessary `r` prefix to the multi-line string.
We recently changed our droplet setup such that their
host names no longer include zulipdev.org. This caused
a few things to break.
The particular symptom that this commit fixes is that
we were trying to server static assets from
showell:9991 instead of showell.zulipdev.org:9991,
which meant that you couldn't use the app locally.
(The server would start, but the site's pretty unusable
without static assets.)
Now we rely 100% on `dev_settings.py` to set
`EXTERNAL_HOST` for any droplet users who don't set
that var in their own environment. That allows us to
remove some essentially duplicate code in `run-dev.py`.
We also set `IS_DEV_DROPLET` explicitly, so that other
code doesn't have to make inferences or duplicate
logic to detemine whether we're a droplet or not.
And then in `settings.py` we use `IS_DEV_DROPLET` to
know that we can use a prod-like method of calculating
`STATIC_URL`, instead of hard coding `localhost`.
We may want to iterate on this further--this was
sort of a quick fix to get droplets functional again.
It's possible we can re-configure droplets to have
folks get reasonable `EXTERNAL_HOST` settings in their
bash profiles, or something like that, although that
may have its own tradeoffs.
This reverts commit 36a8e61e67 (#13934).
The Django 2.2 autoreloader works by forking into a child process that
exits with status 3 when a file changes, and a parent process that
restarts the child when it exits with status 3. Setting this
environment variable had the effect of pretending we were already the
child process, without a parent process to restart it. Therefore,
changing any code used by the queue processor caused it to exit rather
than restart.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
In Django 2.2 the autoreload system has changed.
DJANGO_AUTORELOAD_ENV env variable should be set when calling code
that'll use the autoreloader. Otherwise there's some kind of race
condition in the autoreload code when SIGINT is sent, where
restart_with_reloader() (called only if the env variable isn't set)
has the subprocess module calling p.kill() on a process that's already
exited, raising ProcessLookupError and printing an ugly traceback. This
causes non-deterministic test-run-dev failures.
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>
Previously, while Django code that relied on EXTERNAL_HOST and other
settings would know the Zulip server is actually on port 9991, the
upcoming Django SAML code in python-social-auth would end up detecting
a port of 9992 (the one the Django server is actually listening on).
We fix this using X-Forwarded-Port.
Apparently Tornado decompresses gzip responses by default. Worse, it
fails to adjust the Content-Length header when it does.
https://github.com/tornadoweb/tornado/issues/2743
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
A HEAD response has a Content-Length but no body; it’s not correct in
that case to let Tornado default Content-Length to 0.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
Anders Kaseorg
Adam Birds
Tim Abbott
m-e-l-u-h-a-n
Riken Shah
Ganesh Pawar
Dinesh
Anders Kaseorg
Tim Abbott
Steve Howell
Mateusz Mandera
Wyatt Hoodes