This is a simple yet functional payload service, that meant to mock real world service behavior.
Any service can be unpredictably slow in a startup or shutdown processes, as well as, it can accidentally exit or, in opposite, resist to become terminated from external command.
Moreover, such real-world services, can easily exceed any limits, like CPU time or granted RAM.
To control application's behaviour, you need to pass one or several Environment variables from this list:
- EXITCODE (int), — to control with which exit code the application will use;
- HEALTHURI (string, urlformated), — to control on which host, port health web server will started, and by which path it will be answering;
- IGNORESIGS (string, comma separated), — defines which os Signals should be ignored KILL (9) will never be ignored or catched;
- INITTIME (duration: N[ns|us|ms|s|m|h] or their combination), — defines for how long it will takes to initialize the application;
- LIFETIME (duration: N[ns|us|ms|s|m|h] or their combination), — defines life time of the application, after which it will be stopped;
- STOPTIME (duration: N[ns|us|ms|s|m|h] or their combination), — defines for how long it will takes to stop the application;
Liveliness of main application will performed by additional application called
healthprobe. It will be invoked by Docker via HEALTHCHECK directive declared in
Dockerfile. Each time, it will try to GET against URL defined in HEALTHURI or
http://localhost:8080/health by default, and regarding success it will
inform docker about that.