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#
# Author:: Jay Mundrawala (<jdm@chef.io>)
#
# Copyright:: Copyright 2014-2016, 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 "../../log"
require_relative "resource_info"
require_relative "../../exceptions"
class Chef
class Util
class DSC
class LocalConfigurationManager
module Parser
# Parses the output from LCM and returns a list of Chef::Util::DSC::ResourceInfo objects
# that describe how the resources affected the system
#
# Example for WhatIfParser:
# parse <<-EOF
# What if: [Machine]: LCM: [Start Set ]
# What if: [Machine]: LCM: [Start Resource ] [[File]FileToNotBeThere]
# What if: [Machine]: LCM: [Start Set ] [[File]FileToNotBeThere]
# What if: [C:\ShouldNotExist.txt] removed
# What if: [Machine]: LCM: [End Set ] [[File]FileToNotBeThere] in 0.1 seconds
# What if: [Machine]: LCM: [End Resource ] [[File]FileToNotBeThere]
# What if: [Machine]: LCM: [End Set ]
# EOF
#
# would return
#
# [
# Chef::Util::DSC::ResourceInfo.new(
# '[[File]FileToNotBeThere]',
# true,
# [
# '[[File]FileToNotBeThere]',
# '[C:\Shouldnotexist.txt]',
# '[[File]FileToNotBeThere] in 0.1 seconds'
# ]
# )
# ]
#
# Example for TestDSCParser:
# parse <<-EOF
# InDesiredState : False
# ResourcesInDesiredState :
# ResourcesNotInDesiredState: {[Environment]texteditor}
# ReturnValue : 0
# PSComputerName : .
# EOF
#
# would return
#
# [
# Chef::Util::DSC::ResourceInfo.new(
# '{[Environment]texteditor}',
# true,
# [
# ]
# )
# ]
#
def self.parse(lcm_output, test_dsc_configuration)
test_dsc_configuration ? test_dsc_parser(lcm_output) : what_if_parser(lcm_output)
end
def self.test_dsc_parser(lcm_output)
lcm_output ||= ""
current_resource = {}
resources = []
lcm_output.lines.each do |line|
op_action , op_value = line.strip.split(":")
op_action&.strip!
case op_action
when "InDesiredState"
current_resource[:skipped] = op_value.strip == "True" ? true : false
when "ResourcesInDesiredState"
current_resource[:name] = op_value.strip if op_value
when "ResourcesNotInDesiredState"
current_resource[:name] = op_value.strip if op_value
when "ReturnValue"
current_resource[:context] = nil
end
end
if current_resource[:name]
resources.push(current_resource)
end
if resources.length > 0
build_resource_info(resources)
else
raise Chef::Exceptions::LCMParser, "Could not parse:\n#{lcm_output}"
end
end
def self.what_if_parser(lcm_output)
lcm_output ||= ""
current_resource = {}
resources = []
lcm_output.lines.each do |line|
op_action, op_type, info = parse_line(line)
case op_action
when :start
case op_type
when :set
if current_resource[:name]
current_resource[:context] = :logging
current_resource[:logs] = [info]
end
when :resource
if current_resource[:name]
resources.push(current_resource)
end
current_resource = { name: info }
else
Chef::Log.trace("Ignoring op_action #{op_action}: Read line #{line}")
end
when :end
# Make sure we log the last line
if current_resource[:context] == :logging && info.include?(current_resource[:name])
current_resource[:logs].push(info)
end
current_resource[:context] = nil
when :skip
current_resource[:skipped] = true
when :info
if current_resource[:context] == :logging
current_resource[:logs].push(info)
end
end
end
if current_resource[:name]
resources.push(current_resource)
end
if resources.length > 0
build_resource_info(resources)
else
raise Chef::Exceptions::LCMParser, "Could not parse:\n#{lcm_output}"
end
end
def self.parse_line(line)
if match = line.match(/^.*?:.*?:\s*LCM:\s*\[(.*?)\](.*)/)
# If the line looks like
# What If: [machinename]: LCM: [op_action op_type] message
# extract op_action, op_type, and message
operation, info = match.captures
op_action, op_type = operation.strip.split(" ").map { |m| m.downcase.to_sym }
else
op_action = op_type = :info
if match = line.match(/^.*?:.*?: \s+(.*)/)
info = match.captures[0]
else
info = line
end
end
info.strip! # Because this was formatted for humans
[op_action, op_type, info]
end
private_class_method :parse_line
def self.build_resource_info(resources)
resources.map do |r|
Chef::Util::DSC::ResourceInfo.new(r[:name], !r[:skipped], r[:logs])
end
end
private_class_method :build_resource_info
end
end
end
end
end
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