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require 'puppet/util/autoload'
require 'puppet/util'
# A module that can easily autoload things for us. Uses an instance
# of Puppet::Util::Autoload
module Puppet::Util::InstanceLoader
include Puppet::Util
# Are we instance-loading this type?
def instance_loading?(type)
defined?(@autoloaders) and @autoloaders.include?(symbolize(type))
end
# Define a new type of autoloading.
def instance_load(type, path, options = {})
@autoloaders ||= {}
@instances ||= {}
type = symbolize(type)
@instances[type] = {}
@autoloaders[type] = Puppet::Util::Autoload.new(self, path, options)
# Now define our new simple methods
unless respond_to?(type)
meta_def(type) do |name|
loaded_instance(type, name)
end
end
end
# Return a list of the names of all instances
def loaded_instances(type)
@instances[type].keys
end
# Collect the docs for all of our instances.
def instance_docs(type)
docs = ""
# Load all instances.
instance_loader(type).loadall
# Use this method so they all get loaded
loaded_instances(type).sort { |a,b| a.to_s <=> b.to_s }.each do |name|
mod = self.loaded_instance(name)
docs += "%s\n%s\n" % [name, "-" * name.to_s.length]
docs += Puppet::Util::Docs.scrub(mod.doc) + "\n\n"
end
docs
end
# Return the instance hash for our type.
def instance_hash(type)
@instances[symbolize(type)]
end
# Return the Autoload object for a given type.
def instance_loader(type)
@autoloaders[symbolize(type)]
end
# Retrieve an alread-loaded instance, or attempt to load our instance.
def loaded_instance(type, name)
name = symbolize(name)
return nil unless instances = instance_hash(type)
unless instances.include? name
if instance_loader(type).load(name)
unless instances.include? name
Puppet.warning(
"Loaded %s file for %s but %s was not defined" % [type, name, type]
)
return nil
end
else
return nil
end
end
instances[name]
end
end
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