Yeah, I'll work on the patches tonight. I know Cheetah has some weird
inheritance stuff (again, python), so I'll look at that as a way to get the
builtin functions there, too. I'll also get the advanced SNIPPET thing working
tonight as well. Just to be certain on its functionality:
check if per_system/$system/$file exists and include it if it does.
else check if per_profile/$profile/$file exists and include it if it does.
else check if $file exists and include it if it does.
else if none of those exist just say:
#error no snippet data
I want to make sure that the functionality of the backwards-compatible SNIPPET
does not get broken just because I left something out.
Do you need me to write the replace SNIPPET::x with $SNIPPET('x')
functionality, too?
I'll go ahead and submit a patch that automatically includes the builtins and
I'll submit the SNIPPET builtin. I'm going to wait a bit on some of these other
builtins until I know for sure how I'm going to do them. (I've been using them
for the STIG stuff and have found myself changing them constantly, so hopefully
I'll settle soon).
~
Dan
> Date: Tue, 29 Jul 2008 16:09:09 -0400
> From: [EMAIL PROTECTED]
> To: [email protected]
> Subject: Re: Snippet with generalized functions
>
> Dan G wrote:
> > OK, hotmail sucks! Please see below. hopefully this time with proper line
> > breaks.
> > ________________________________
> >
> >> From: [EMAIL PROTECTED]
> >> To: [email protected]
> >> Subject: Snippet with generalized functions
> >> Date: Mon, 28 Jul 2008 18:26:37 -0500
> >>
> >> Attached is a snippet that makes use of cheetah methods. These are similar
> >> to some of the functionality that the Solaris SST offers. They basically
> >> encapsulate many (usually obscure) sed commands into handy functions.
> >>
> >
> > $set_config_value('/etc/login.defs', 'LOGIN_RETRIES', 3)
> >
> > is more readable than:
> >
> > perl -npe 's/^([ \t]*$LOGIN_RETRIES[ \t]+)[\x21-\x7E]*([
> > \t]*(#.*)?)$/\${1}3\${2}/' -i '/etc/login.defs'
> >
> > and the perl (sed) command doesn't take into account the possibility that
> > LOGIN_RETRIES may not already be present in the file. The use of a function
> > makes kickstart templates more readable and helps avoid errors.
> >
> > Because of the utility of these functions, I would suggest they be
> > distributed with cobbler, possibly as 'built-in' methods.
> >
> > Development note: although I have tested that these functions do not cause
> > any Cheetah errors, I have not tested the resulting kickstarts in an actual
> > provision. They may still cause errors on the client side :( .
> >
> > ~
> > Dan
> >
> >
> >> ________________________________
> >> With Windows Live for mobile, your contacts travel with you. Connect on
> >> the go.
> >>
> >
> > _________________________________________________________________
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> >
>
> Dan,
>
> Neat. Do you have a patch to cobbler to make this automatically
> available to all cobbler templates? Something like this might be
> interesting.
>
> Basically I think it's just an edit to templar.py to insert the include
> at the top of all the templates, and we could ship it in
> /etc/cobbler/cheetah.includes or something?
>
> I'm also interested in your generalization of Snippet inclusion with the
> "Advanced Snippet" functionality down to Cheetah functions, as that
> function is something we could also include in that file.
>
> --Michael
>
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