On Tue, May 24, 2011 at 12:44:42PM +0200, RaSca wrote:
> Il giorno Mar 24 Mag 2011 12:27:04 CET, Dejan Muhamedagic ha scritto:
> > Hi,
>
> Hi Dejan,
>
> [...]
> >> # Read parameters
> >> conf_file="/etc/hetzner.cfg"
> >> user=`cat /etc/hetzner.cfg | egrep "^user.*=" | sed 's/^user.*=\ *//g'`
> > Better:
> > user=`sed -n 's/^user.*=\ *//p' /etc/hetzner.cfg`
>
> Absolutely agree.
>
> >> pass=`cat /etc/hetzner.cfg | egrep "^pass.*=" | sed 's/^pass.*=\ *//g'`
> >> hetzner_server="https://robot-ws.your-server.de";
> > I assume that this is a well-known URL which doesn't need to be
> > passed as a parameter.
>
> As far as I know it is the only address, I hard-coded it for this
> reason, but maybe should be a parameter...
OK.
> >> is_host_up() {
> >> if [ "$1" != "" ]
> >> then
> >> status=`curl -s -u $user:$pass $hetzner_server/server/$1 | sed
> >> 's/.*status\":"\([A-Za-z]*\)",.*/\1/g'`
> >> if [ "$status" = "ready" ]
> >> then
> >> return 0
> >> else
> >> return 1
> >> fi
> > This if statement can be reduced to (you save 5 lines):
> > [ "$status" = "ready" ]
> >> else
> >> return 1
> >> fi
> >> }
>
> You mean the statement should be:
>
> [ "$status" = "ready" ] && return 0
> return 1
>
> ?
No, just [ "$status" = "ready" ]. The return is implied at the
end of the function and the code is the exit code of the last
command.
> [...]
> > Again, better (is return code of is_host_up inverted?):
> > is_host_up "$hostaddress"
> > exit # this is actually also superfluous, but perhaps better left in
>
> The action is reset, so if I had success then is_host_up must be NOT
> ready. Or not?
Right, sorry, I should've turned on my brain beforehand. You can
try this:
exit $((! $?))
That is going to invert the code.
> [...]
> > Ditto.
> > Good work!
> > Cheers,
> > Dejan
> > P.S. Moving discussion to linux-ha-dev.
>
> If the compact way is correct, I can modify the script and post it again.
Yes, please do.
Cheers,
Dejan
> --
> RaSca
> Mia Mamma Usa Linux: Niente รจ impossibile da capire, se lo spieghi bene!
> ra...@miamammausalinux.org
> http://www.miamammausalinux.org
>
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