lib/kitchen/terraform/variables_manager.rb
# frozen_string_literal: true
# Copyright 2016-2021 Copado NCS LLC
#
# 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 "kitchen"
module Kitchen
module Terraform
# VariablesManager manages Terraform variables in the Kitchen instance state.
class VariablesManager
# #initialize prepares a new instance of the class.
#
# @return [Kitchen::Terraform::VariablesManager]
def initialize
self.state_key = :kitchen_terraform_variables
end
# #load reads the Terraform variables from the Kitchen instance state and writes them to a container.
#
# @param variables [Hash] the container to which the Terraform variables will be written.
# @param state [Hash] the Kitchen instance state from which the Terraform variables will be read.
# @return [self]
def load(variables:, state:)
variables.replace state.fetch state_key
self
rescue ::KeyError => error
raise(
::Kitchen::ClientError,
"Reading the Terraform input variables from the Kitchen instance state failed due to the absence of the " \
"'#{state_key}' key. This error could indicate that the Kitchen-Terraform provisioner plugin was not used " \
"to converge the Kitchen instance."
)
end
# #save reads the Terraform variables from a container and writes them to the Kitchen instance state.
#
# @param variables [Hash] the container from which the Terraform variables will be read.
# @param state [Hash] the Kitchen instance state to which the Terraform variables will be written.
# @return [self]
def save(variables:, state:)
state.store state_key, variables
self
end
private
attr_accessor :state_key
end
end
end