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# frozen_string_literal: true
#
# Copyright:: Copyright (c) Chef Software Inc.
# License:: Apache License, Version 2.0
#
# 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 "train_helpers"
module ChefUtils
module DSL
# This is for "introspection" helpers in the sense that we are inspecting the
# actual server or image under management to determine running state (duck-typing the system).
# The helpers here may use the node object state from ohai, but typically not the big 5: platform,
# platform_family, platform_version, arch, os. The helpers here should infer somewhat
# higher level facts about the system.
#
module Introspection
include TrainHelpers
# Determine if the node is a docker container.
#
# @param [Chef::Node] node the node to check
# @since 12.11
#
# @return [Boolean]
#
def docker?(node = __getnode)
# Using "File.exist?('/.dockerinit') || File.exist?('/.dockerenv')" makes Travis sad,
# and that makes us sad too.
!!(node && node.read("virtualization", "systems", "docker") == "guest")
end
# Determine if the node uses the systemd init system.
#
# @param [Chef::Node] node the node to check
# @since 15.5
#
# @return [Boolean]
#
def systemd?(node = __getnode)
file_exist?("/proc/1/comm") && file_open("/proc/1/comm").gets.chomp == "systemd"
end
# Determine if the node is running in Test Kitchen.
#
# @param [Chef::Node] node the node to check
# @since 15.5
#
# @return [Boolean]
#
def kitchen?(node = __getnode)
ENV.key?("TEST_KITCHEN")
end
# Determine if the node is running in a CI system that sets the CI env var.
#
# @param [Chef::Node] node the node to check
# @since 15.5
#
# @return [Boolean]
#
def ci?(node = __getnode)
ENV.key?("CI")
end
# Determine if the a systemd service unit is present on the system.
#
# @param [String] svc_name
# @since 15.5
#
# @return [Boolean]
#
def has_systemd_service_unit?(svc_name)
%w{ /etc /usr/lib /lib /run }.any? do |load_path|
file_exist?(
"#{load_path}/systemd/system/#{svc_name.gsub(/@.*$/, "@")}.service"
)
end
end
# Determine if the a systemd unit of any type is present on the system.
#
# @param [String] svc_name
# @since 15.5
#
# @return [Boolean]
#
def has_systemd_unit?(svc_name)
# TODO: stop supporting non-service units with service resource
%w{ /etc /usr/lib /lib /run }.any? do |load_path|
file_exist?("#{load_path}/systemd/system/#{svc_name}")
end
end
# Determine if the current node includes the given recipe name.
#
# @param [String] recipe_name
# @since 15.8
#
# @return [Boolean]
#
def includes_recipe?(recipe_name, node = __getnode)
node.recipe?(recipe_name)
end
# chef-sugar backcompat method
alias_method :include_recipe?, :includes_recipe?
extend self
end
end
end
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