Synctl did not check if a worker thread was already running when using
`synctl start` and would naively start a fresh copy. This would
sometimes lead to cases where many duplicate copies of a single worker
would run.
This fix adds a pid check when starting worker threads and synctl will
now refuse to start individual workers if they're already running.
* If an error occurs when stopping a process synctl now logs a warning.
* During a restart, synctl will avoid attempting to start Synapse if an error
occurs during stopping Synapse.
We pass --daemonize on the commandline, which (since at least #4853) overrides
whatever the config file, so there is no need for it to be set in the config
file.
* Fix command hint to generate a config file
When trying to start Synapse without a config file, it will complain
and give a hint towards what command to run. This hinted command
is missing the "report_stats" parameter, which is required with either
yes or no value. Add this to the command.
Not an ideal situation but makes the given command work without the
user getting another error, even though it might be unclear what
"report_stats" represents.
Signed-off-by: Jason Robinson <jasonr@matrix.org>
symlinks apparently break setuptools on python3 and alpine
(https://bugs.python.org/issue31940), so let's stop using a symlink and just
use the file directly.
