On Sunday, November 18, 2012 2:35:56 PM UTC-6, Walter Heck - OlinData.com
wrote:
>
> Hello,
>
> On Sun, Nov 18, 2012 at 6:47 PM, Stefan Heijmans
> <heij...@rechtspraak.nl <javascript:>> wrote:
> > No, i's not, it is correct, see
> > http://docs.puppetlabs.com/guides/scope_and_puppet.html
> >
> > At the moment you 'include mysql' only the top scope package variable is
> > known, so there fore mysql package will be installed.
> > swap them around and mysql-server package will get installed.
> but I am specifically referring to _not_ the top-scope variable by
> using $mysql_server::package. This is a scope that doesn't have that
> variable (yet, anyway). I don't expect Puppet to just jump to a higher
> level scope (top-scope in this case) to go and look for my variable
> there.
>
>
I agree, it looks like a bug to me. A variable reference should never
evaluate a variable that doesn't match the given name. I would file a
ticket.
The issue may be less straightforward than it first appears, however.
Consider the difference between $mysql_server::package and
$::mysql_server::package. In the vast majority of cases, I would expect
them to evaluate to the same thing (including manifesting the same bug in
this case). But what if there were also this class:
class mysql::mysql_server {
$package = 'mysql-server55'
}
Assume that mysql::mysql_server is declared before class mysql. What value
do you then expect when class mysql dereferences $mysql_server::package?
That is, do you get "mysql-server" from $::mysql_server::package or
"mysql-server55" from $::mysql::mysql_server::package? I think you get the
latter, and I think that's reasonable. Moreover, I would guess that the
support for that behavior is where the bug is hiding.
John
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