snipe-it/docker/supervisor-exit-event-listener
Jonathon Reinhart e59ec8b27f Run Laravel schedule in docker image using supervisord (#6606)
* docker: Rename /entrypoint.sh to /startup.sh

This script is not configured as the docker image ENTRYPOINT, thus it is
misleading to name it so.

* docker: Terminate supervisord if a process enters the FATAL state

By terminating PID 1, this will also terminate the Docker container.

* docker: Use supervisord to start up apache and cron

Note that this uses `apache2ctl -DFOREGROUND` rather than manually
sourcing /etc/apache2/envvars and running apache2, as recommended at
https://advancedweb.hu/2018/07/03/supervisor_docker/.

* docker: Add artisan schedule:run to crontab

This also switches to executing /var/www/html/artisan directly.

* docker: Run artisan schedule:run directly from supervisor

This has the following benefits over using cron:
- Cron doesn't need to be installed
- Docker-provided environment variables are preserved
- It's easy and explicit to run as the docker user
2019-03-07 12:42:00 -08:00

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521 B
Python

#!/usr/bin/env python
# A supervisor event listener which terminates supervisord if any of its child
# processes enter the FATAL state.
# https://stackoverflow.com/a/37527488/119527
import os
import signal
from supervisor import childutils
def main():
while True:
headers, payload = childutils.listener.wait()
childutils.listener.ok()
if headers['eventname'] != 'PROCESS_STATE_FATAL':
continue
os.kill(os.getppid(), signal.SIGTERM)
if __name__ == "__main__":
main()