[Baypiggies] Dumb "keep it running" script

[Benjamin Sergeant]

Thanks for all the links and insights :)
I'm gonna keep running on my brand new wheel and when I'll have a flat
tire I'll look into those links.

;)

- Benjamin



On Wed, Sep 23, 2009 at 1:34 PM, Ryan Bowlby <rbowlby83 at yahoo.com> wrote:
> *nix:  http://cr.yp.to/daemontools.html - the original
> Mac:   Launchd - daemon monitoring perfected
> Linux: inittab (respawn) - already running, so no additional process overhead. Includes logging, etc.
>
> You thought you would be safe from these replies with your "reinventing wheel" disclaimer...sorry I couldn't help it.
>
> -Ryan
>
>
> --- On Wed, 9/23/09, Benjamin Sergeant <bsergean at gmail.com> wrote:
>
>> From: Benjamin Sergeant <bsergean at gmail.com>
>> Subject: [Baypiggies] Dumb "keep it running" script
>> To: "Baypiggies" <baypiggies at python.org>
>> Date: Wednesday, September 23, 2009, 3:02 PM
>> Hi there,
>>
>> I figured out this morning that I had a long-running
>> process that died
>> one week ago for some obscure reasons. I made a little
>> script that
>> restarts a script when the called script die. I know there
>> are already
>> existing stuff doing that but I could not remember the name
>> / find any
>> existing ones  ... so why not re-inventing the wheel
>> one more time :)
>>
>> Thanks for any feedback,
>> - Benjamin
>>
>> http://code.activestate.com/recipes/576911/
>> #!/usr/bin/env python
>>
>> import sys
>> import time
>> import subprocess
>>
>> """
>> Keep a process up and running
>>
>> If you have a long running process that can be killed for
>> strange and unknown
>> reason, you might want it to be restarted ... this script
>> does that.
>>
>> $ cat alive.sh
>> #!/bin/sh
>>
>> while `true`; do echo Alive && sleep 3 ; done
>>
>> Use it like this:
>> $ keepup.py ./alive.sh
>> """
>>
>> cmd = ' '.join(sys.argv[1:])
>>
>> def start_subprocess():
>>     return subprocess.Popen(cmd, shell=True)
>>
>> p = start_subprocess()
>>
>> while True:
>>
>>     res = p.poll()
>>     if res is not None:
>>         print p.pid, 'was killed,
>> restarting it'
>>         p = start_subprocess()
>>
>>     time.sleep(1)
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>
>
>
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