Without this patch the PE modules don't have a way to identify a
filesystem path where it's OK to place variable data related to managing
the target node. This is a problem when a module like pe_compliance
needs to write a wrapper script to the node's filesystem.
This patch addresses the problem by exposing the node's Puppet[:vardir]
setting as a Facter fact.
This fact value will be set to `nil` if Puppet is not loaded into
memory. If Puppet is loaded, e.g. using `facter --puppet` or using
`puppet agent` or `puppet apply` then the fact will automatically set
the value to Puppet[:vardir]
The value of this setting is subject to Puppet's run_mode.
This patch implements a new utility method in the standard library
module named `Facter::Util::PuppetSettings.with_puppet`. The method
accepts a block and will only invoke the block if the Puppet library is
loaded into the Ruby process. If Puppet is not loaded, the method
always returns nil. This makes it easy to define Facter facts that only
give values if Puppet is loaded in memory.
Without this patch the root_home fact fails on windows. This patch
fixes the problem by only calling methods on the object returned by the
`getent passwd root` command if the object evaluates to true.
Because there is no root account on Windows the code block simply
returns `nil` which makes the Facter fact undefined on Windows
platforms.
The root cause of the failure is that we always expected the command to
succeed and return something useful, and it may not on all supported
platforms.
Without this patch applied, the stdlib module does not provide a
root_home fact. This fact is necessary to easily determine the root
account home directory on platforms Puppet is supported on.
The major variations this fact address are:
---
solaris: /
linux: /root
macosx: /var/root
Spec tests using rspec have been provided as well to cover these three
general cases. Windows tests are marked as pending.
