Issue #9848 has been updated by Gary Larizza.
Weighing in to agree with Dan on this one. The conditional logic that needs to
be done to work around this is quite annoying (and usually requires another
variable altogether, a la this:
<pre>
class foo(
$confdir = '/etc/foo',
$certs_directory = 'UNSET'
) {
if $certs_directory == 'UNSET' {
$certs_directory_real = "${confdir}/certs"
} else {
$certs_directory_real = $certs_directory
}
}
</pre>
----------------------------------------
Bug #9848: Variable interpolation in class parameters seems random
https://projects.puppetlabs.com/issues/9848#change-75671
Author: Carlos Sanchez
Status: Accepted
Priority: Normal
Assignee:
Category: parameterized classes
Target version: 3.x
Affected Puppet version: 2.7.1
Keywords: parameter variable class interpolation evaluation BD
Branch:
In class parameters, things like x="x", y="y${x}" don't always evaluate right
(y="yx"), seems random. I'm using 2.7.1
<pre>
class test1(
$servicex = "sonar",
$logfoldera = "${homex}/logs",
$logfoldere = "${homey}/logs",
$logfolderh = "${homez}/logs",
$logfolder = "${homex}/logs",
$homex = "/var/${servicex}",
$homey = "/var/${servicex}",
$homez = "/var/${servicex}") {
notice($homex)
notice($homey)
notice($homez)
notice("-----")
notice($logfoldera)
notice($logfoldere)
notice($logfolderh)
}
</pre>
output :
<pre>
notice: Scope(Class[Test1]): /var/sonar
notice: Scope(Class[Test1]): /var/sonar
notice: Scope(Class[Test1]): /var/sonar
notice: Scope(Class[Test1]): -----
notice: Scope(Class[Test1]): /var/sonar/logs
notice: Scope(Class[Test1]): /logs
notice: Scope(Class[Test1]): /logs
</pre>
Note the last two messages should print "/var/sonar/logs"
Ordering the paramenters in the order they are needed gets the same result.
Just by changing the name of the parameters from class test1 to test2 I get
different evaluations of the variables, one is right and two are wrong, you can
see that in [this gist](https://gist.github.com/1250837)
Commented on [the user
list](https://groups.google.com/d/topic/puppet-users/x_BCxE6SQcM/discussion)
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