2011/6/20 jcbollinger <john.bollin...@stjude.org>
>
>
> On Jun 18, 1:35 pm, vagn scott <vagnsc...@gmail.com> wrote:
> > On 06/18/2011 10:31 AM, Markus Falb wrote:
> >
> >
> >
> > > On 18.6.2011 05:30, vagn scott wrote:
> >
> > >> or you can do what I do and pipe that archive into tar:
> >
> > >> exec { "true $title&& wget -O - $upstream | tar xzf -
> --xform
> > >> 's,wordpress/,,'":
> > >> cwd => "$top",
> > >> creates => "$top/license.txt",
> > >> before => File[ "$top/setup.mysql" ],
> > >> }
> >
> > >> the reason for the 'true $title&&' part is
> > >> that I want to be able to use this exec multiple times (it is in a
> > >> defined class).
> > >> So I need to get the $title in there so puppet doesn't think it is
> > >> a duplicate definition.
> >
> > > You can separate the title from the actual command
> >
> > > exec { "uniqe title maybe with $title in it":
> > > command => "wget...",
> > > ...
> > > }
> >
> > And then I have to make up a title that won't collide
> > with another title somewhere else. Also, I lose a line
> > of vertical space on the screen, and I have to go
> > looking for what the exec is doing, instead of it being
> > on the first line. Shortcut operators don't slow me
> > down at all. Those are my tradeoffs, and why
> > I chose this style. YMMV.
> >
> > But, since you mentioned it: Is it so arcane a practice that
> > I should avoid it for the sake of people reading my code?
>
>
> If your concern is for the people reading your code then yes, you
> should give your Execs a plain-language title. You might even find
> that "people reading your code" includes you, six months from now. Or
> tomorrow. The readability advantage compounds with the number of
> Execs in your manifests and with the complexity of their commands.
>
> There are advantages other than readability, as well. In particular,
> the resource title does not change when you tweak the command. This
> is important if your manifests refer to the Exec resource by title --
> in another resource's "before" or "notify" parameter, for instance.
>
>
> John
>
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>
--
Lucas Pereira Brígida
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