Restart postgres service if provision is called in production test suite.
This is required because terminate-psql-sessions script (used
in tools/ci/setup-production) throws error if postgres service is not running.
Restart rabbitmq service if provision is called in production test suite.
This is done to start the node as Circle CI don't start services on installation.
Removed memcached restart as flush-memcached script (which is furthur
used in tools/ci/production) throws UNKNOWN READ FAILURE if memcached is restarted
in development.
Since now we want to use production suites on Circle CI so there
is no need to set TRAVIS in env while running scripts.
CIRCLECI is set default in the enviroment of Circle CI builds
so we can use it directly.
Also Travis CI had rabbitmq-server installed so we had to add workaround
in install script to avoid the error. That workaround is removed.
Used postgres 10 inplace of postgres 9.5 as it is used in Bionic.
Upgraded nginx version in success-http-headers which is in CircleCI
Bionic enviroment.
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>
mypy in daemon mode takes some 400 MiB of memory, and cannot follow
imports of type-annotated third-party packages; meanwhile, non-daemon
mode is no longer nearly as slow as it once was.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This helps generalize the use of groups inside zulint.
Introduce list_files to return `by_lang` files dict.
Add feature to create custom groups.
Make custom groups for backend and frontend files.
This optimizes test-backend by skipping webhook
tests when run in default mode.
Tweaked by tabbott to extend the documentation and update the CI
commands.
/bin/sh and /usr/bin/env are the only two binaries that NixOS provides
at a fixed path (outside a buildFHSUserEnv sandbox).
This discussion was split from #11004.
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
To support this, we add a pass_targets option to the main linter
library, because with current mypy, it's generally counterproductive
to pass the list of files in (can produce spurious errors; isn't
faster).
arpit551
Anders Kaseorg
Stefan Weil
Vishnu Ks
Aman Agrawal
Tim Abbott
Raymond Akornor
Sumanth V Rao
Anders Kaseorg