On 01/19/2011 12:39 AM, MJ wrote:
> I'm suspect it is one of the "subtle and strange" behavoir. I suppose
> I should have just posted a link to the code in git hub. I guess I
> was expecting that this would be something that was going to jump out
> as something obvious. My apologies for not doing so. Here is the
> link:
>
> https://github.com/therevmj/puppet-module-software/blob/master/manifests/init.pp
Interesting construct. Why do you need to go so meta? Usually, instead
of building a framework for packages/services/... that you specify in
some external scheme that you make up, you just write a classes for each
such set in puppet DSL in the first place. Not much more work and much
less of a hassle I'd assume.
But I digress. Concerning your specific problem:
First thing, I guess there's a misunderstanding on your part as to how
defined() is supposed to check for the presence of class definitions.
That's actually a documentation bug you'd like to file, actually.
Observe the following snippet:
class defined_class { }
if defined(defined_class) {
notify { "Works without Class[] syntax": }
}
if defined(Class["defined_class"]) {
notify { "Works WITH Class[] syntax": }
}
Yields "Works without Class[] syntax" in 2.6.2.
Now it would have been my guess that variables (parameter values even)
in the argument to defined() might be a problem too, but even this:
class defined_class_a { }
define class_checker() {
if defined("defined_class_$name") {
notify { "Class $name is defined": }
}
}
class_checker { [ "a", "b" ]: }
"correctly" yields "Class a is defined".
So you may get away with fixing your syntax.
You should really file that documentation bug ;-)
Also, if you share more about what you want to achieve with this,
somebody may be able to recommend a more...let's say "straight forward"
solution :-)
Cheers,
Felix
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