puppet onlyif logical expression - puppet

Question

I am trying to set up a Puppet exec resource for a Windows Server based on a Facter variable. But, it looks like onlyif accepts only command files and not an inline expression.
Could someone please help me set this expression in onlyif (either as a conditional expression or as inline-dos command)
exec { 'C:\Users\validate.cmd validate':
onlyif => "$validate_enabled" == true, => This not recognized as command
provider => powershell,
}
Thanks in advance.

Answer 1

There are a couple issues here. The first is that the syntax for the onlyif is incorrect. That attribute executes a command and checks for success, so you would want to change it to this to remove Puppet string and shell syntax issues:
exec { 'C:\Users\validate.cmd validate':
onlyif => $validate_enabled,
provider => powershell,
}
Note the first part of what I wrote (executes a command). You do not want to execute a command in this instance. You want to check the value of a boolean Facter fact. Therefore, you would be checking this with Puppet DSL and not a shell command.
Facter 3/Puppet 4:
# use fact hash
if $facts['validate_enabled'] {
exec { 'C:\Users\validate.cmd validate': provider => powershell }
}
Facter 2/Puppet 3:
# specify global variable for safety
if $::validate_enabled {
exec { 'C:\Users\validate.cmd validate': provider => powershell }
}
This will fix your conditional and give you your desired behavior.