Replace a separate call to subprocess, starting `node` from scratch,
with an optional standalone node Express service which performs the
rendering. In benchmarking, this reduces the overhead of a KaTeX call
from 120ms to 2.8ms. This is notable because enough calls to KaTeX in
a single message would previously time out the whole message
rendering.
The service is optional because he majority of deployments do not use
enough LaTeX to merit the additional memory usage (60Mb).
Fixes: #17425.
While this could be done previously by calling
`upgrade-zulip-from-git --remote-url /srv/zulip.git`, the explicit
argument makes this more straightforward, and avoids churning the
`refs/remotes/origin/` namespace.
A user who somehow got an empty `zulip` database, but without a
`zerver_messages` table in it, would get stuck in the installer at:
```
++ su postgres -c 'cd / && psql -v ON_ERROR_STOP=1 -Atc '\''SELECT COUNT(*) FROM zulip.zerver_message;'\'' zulip'
ERROR: relation "zulip.zerver_message" does not exist
LINE 1: SELECT COUNT(*) FROM zulip.zerver_message;
^
+ records=
```
Treat a failure to select from `zerver_messages` as having 0 messages,
and continue with the `DROP DATABASE IF EXISTS` / `CREATE DATABASE`
that `create-db.sql` usually does.
Fixes: #29110.
This leaves `args.filter_terms` as the raw values the user specified,
before they may have been transformed to the shape that we use for
substring matching.
Decouple the sending of client restart events from the restarting of
the servers. Restarts use the new Tornado restart-clients endpoint to
inject "restart" events into queues of clients which were loaded from
the previous Tornado process. The rate is controlled by the
`application_server.client_restart_rate`, in clients per minute, or a
flag to `restart-clients` which overrides it. Note that a web client
will also spread its restart over 5 minutes, so artificially-slow
client restarts are generally not very necessary.
Restarts of clients are deferred to until after post-deploy hooks are
run, such that the pre- and post- deploy hooks are around the actual
server restarts, even if pushing restart events to clients takes
significant time.
This flag was generally used not because we wanted to avoid
restarting Tornado, but because we wanted to avoid increasing load
the server when all of the clients were told to reload.
Since we have laid the groundwork for separately telling Tornado to
tell clients to restart, we remove the --skip-tornado flag; the next
commit will add the ability to skip client restarts.
This queue is used to things which definitionally may take longer than
a request, so paging after 60s is rather aggressive. This is
especially true because this queue has a very long tail of very slow
tasks -- p99 of task time in this queue is 8.5s, while p99.9 is 197s.
Raise the paging threshold to 15 minutes. While there are
semi-user-facing tasks which use this queue (primarily marking
messages as read), those being delayed for minutes is already a real
possibility if they are stuck behind a large realm export -- and this
is not a situation which should necessarily page, since it is not
solvable by the administrator.
Filling caches needs to happen close to when the server is restarted,
as the gap opens us up to race conditions with user modifications. If
there are migrations, however, it must happen within the critical
period after the migrations are applied.
Move the call to fill the caches to within the `shutdown_server`
function, so that we push it as close to the server shutdown as
possible.
This can happen if `machine.pgroonga` is set during initial
installation. We cannot run `CREATE EXTENSION PGROONGA` because the
database that we need to run that statement in does not exist yet;
make the command a silent no-op that does not create the
`pgroonga_setup.sql.applied` flag file, such that a later
`zulip-puppet-apply` once the database exists can pick up and install
the extension.
Tweaked provision script to run successfully in Fedora 38 and
included a script to build the groonga libs from source because
the packages in Fedora repos are outdated.
There is a major version jump from the last supported version (F34)
which is EOL so references and support for older versions were
removed.
Fixes: #20635
Alex Vandiver
Anders Kaseorg
evykassirer
shu.chen