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#
# Author:: Jay Mundrawala (<jdm@chef.io>)
#
# Copyright:: Copyright (c) Chef Software Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
require_relative "../../mixin/powershell_exec"
require_relative "../../exceptions"
class Chef
class Util
class DSC
class ResourceStore
include Chef::Mixin::PowershellExec
def self.instance
@@instance ||= ResourceStore.new.tap do |store|
store.send(:populate_cache)
end
end
def resources
@resources ||= []
end
def find(name, module_name = nil)
found = find_resources(name, module_name, resources)
# We don't have it, query for the resource...it might
# have been added since we last queried
if found.length == 0
rs = query_resource(name)
add_resources(rs)
found = find_resources(name, module_name, rs)
end
found
end
private
def add_resource(new_r)
count = resources.count do |r|
r["ResourceType"].casecmp(new_r["ResourceType"]) == 0
end
if count == 0
resources << new_r
end
end
def add_resources(rs)
rs.each do |r|
add_resource(r)
end
end
def populate_cache
@resources = query_resources
end
def find_resources(name, module_name, rs)
found = rs.find_all do |r|
name_matches = r["Name"].casecmp(name) == 0
if name_matches
module_name.nil? || (r["Module"] && r["Module"]["Name"].casecmp(module_name) == 0)
else
false
end
end
end
# Returns a list of dsc resources
def query_resources
powershell_exec("get-dscresource").result
end
# Returns a list of dsc resources matching the provided name
def query_resource(resource_name)
ret_val = powershell_exec("get-dscresource #{resource_name}").result
if ret_val.empty?
[]
elsif ret_val.is_a? Array
ret_val
else
[ret_val]
end
end
end
end
end
end
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