Wait PID Wrapper
Introduction
Start a process and store the process identifier in a pid file (wait-pid-wrapper-exec).
The pid file then can be awaited until the process ends (wait-pid-wrapper-waitpid).
This is useful for running a normal process as a service using SystemD, preventing it from running concurrently or running for infinity.
SystemD is capable of running processes as a service but it cannot gracefully timeout (AFAIK).
You can either set KillSignal to something harmless or KillMode=none but then SystemD doesn't timeout the process.
Usage
The following SystemD unit starts a sleep process with the following behavior:
| command | is sleep running? | behavior |
|---|---|---|
| systemctl start mysleep | no | start sleep |
| systemctl start mysleep | yes | sleep is already running |
| systemctl stop mysleep | no | nothing happens, sleep is not running |
| systemctl stop mysleep | yes | wait until sleep has finished, allow timeout to forcefully stop the process |
[Unit]
Description=My sleep
[Service]
Type=exec
ExecStart=waitpidwrapper-exec mysleep sleep 9999
ExecStop=waitpidwrapper-waitpid mysleep
1 maintainer
Metadata
1 maintainer
Release files for wait-pid-wrapper 0.1.0
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