2010-09-15 16:15, R.I.Pienaar wrote:
> ----- "Marc Zampetti" <marc.zampe...@gmail.com> wrote:
>
>> The problem is that I'm trying to do just what you suggest. I have a
>> single class that defines the package and a default version, or just
>> installed. Then I have sub classes that try to override the version.
>> So, the base class is my generic "apache" class, and has all the logic to
>> install apache on the host and configure the basics. Then the child
>> classes add the instance specific stuff. As part of that, I need to
>> specify the version to use.
>
> Using my proposed solution, you don't need all these classes, just update
> the data don't make more classes.
Just to make clear, your solution is to have Marc write
define pkg($app) {
$version = extlookup("pkg_${name}_${app}", "present")
package { $name: ensure => $version; }
}
class app1 {
pkg { "needed-package": app => "app1"; } # Needs version 10.17
}
class app2 {
pkg { "needed-package": app => "app2"; } # Needs version 10.17
}
class app3 {
pkg { "needed-package": app => "app3"; } # Needs version 10.23
}
in his manifests, and then in a separate file (which extlookup() will
look in) write something like:
pkg_needed-package_app1,10.17
pkg_needed-package_app2,10.17
pkg_needed-package_app3,10.23
Right? But that doesn't help him, because if he includes app1 and
app2 on the same node, he will get a conflict, even though they want
the same version of "needed-package".
You must have some more mechanism to resolve that, and the only one
I can think of is to used defined().
/Bellman
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