Without this patch the stdlib spec tests are failing against recent
versions of Puppet. The root cause of this problem is a change in the
behavior of create_resources in Puppet 6baa57b. The change in behavior
caused the :name key to be omitted from the hash returned by
Puppet::Parser::Resource#to_hash which in turn is causing the test
failure.
This patch addresses the problem by updating the test to match the
description of the example. Only the attribute :ensure is checked
instead of the full hash itself.
This patch allows an array of resource titles to be passed into
the ensure_resource function. Each item in the array will be
checked for existence and will be created if it doesn't already
exist.
As far as i know there's no other puppet-dsl-like way to get parameter of
defined resource, so that's why i implemented getparam function, which takes
resource reference and parameter name and returns parameter value.
Here's another example why this function is really useful:
define config($path, $config_param1, $config_param2) { }
define example_resource($config) {
$path = getparam($config, "path")
notice("Path is $path")
}
define example_resource2($example_resource, $config = getparam($example_resource, "config")) {
$config_param1 = getparam($config, "config_param1")
notice("Config parameter is $config_param1")
}
define example_resource3($example_resource, $config = getparam($example_resource, "config")) {
$config_param2 = getparam($config, "config_param2")
notice("Config parameter is $config_param2")
}
class test_getparam {
config { "config_instance":
path => "/some/config/path",
config_param1 => "someconfigtext1",
config_param2 => "someconfigtext2",
}
example_resource { "example_resource_instance":
config => Config["config_instance"]
}
example_resource2 { "example_resource_instance":
example_resource => Example_resource["example_resource_instance"]
}
example_resource3 { "example_resource_instance":
example_resource => Example_resource2["example_resource_instance"]
}
}
class { "test_getparam": }
Without this patch the ensure_packages() function has no rspec behavior
examples. This patch fixes the problem by filling out a spec file with
expected behaviors I could think of.
This commit adds 2 new functions with unit tests.
defined_with_params works similarily to puppet's defined
function, except it allows you to also specify a hash of
params. defined_with_params will return true if a resource
also exists that matches the specified type/title (just like
with defined) as well as all of the specified params.
ensure_resource is a function that basically combines defined_with_params
with create_resources to conditionally create resources only if the
specified resource (title, type, params) does not already exist.
These functions are created to serve as an alternative to using
defined as follows:
if ! defined(Package['some_package']) {
package { 'some_package': ensure => present,
}
The issue with this usage is that there is no guarentee about
what parameters were set in the previous definition of the package
that made its way into the catalog.
ensure_resource could be used instead, as:
ensure_resource('package', 'some_package', { 'ensure' => 'present' })
This will creat the package resources only if another resource does
not exist with the specified parameters.
