lib/mongo/crypt/kms/aws/master_document.rb
# frozen_string_literal: true
# rubocop:todo all
# Copyright (C) 2019-2021 MongoDB 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.
module Mongo
module Crypt
module KMS
module AWS
# AWS KMS master key document object contains KMS master key parameters.
#
# @api private
class MasterKeyDocument
include KMS::Validations
# @return [ String ] AWS region.
attr_reader :region
# @return [ String ] AWS KMS key.
attr_reader :key
# @return [ String | nil ] AWS KMS endpoint.
attr_reader :endpoint
FORMAT_HINT = "AWS key document must be in the format: " +
"{ region: 'REGION', key: 'KEY' }"
# Creates a master key document object form a parameters hash.
#
# @param [ Hash ] opts A hash that contains master key options for
# the AWS KMS provider.
# @option opts [ String ] :region AWS region.
# @option opts [ String ] :key AWS KMS key.
# @option opts [ String | nil ] :endpoint AWS KMS endpoint, optional.
#
# @raise [ ArgumentError ] If required options are missing or incorrectly.
def initialize(opts)
unless opts.is_a?(Hash)
raise ArgumentError.new(
'Key document options must contain a key named :master_key with a Hash value'
)
end
@region = validate_param(:region, opts, FORMAT_HINT)
@key = validate_param(:key, opts, FORMAT_HINT)
@endpoint = validate_param(:endpoint, opts, FORMAT_HINT, required: false)
end
# Convert master key document object to a BSON document in libmongocrypt format.
#
# @return [ BSON::Document ] AWS KMS master key document in libmongocrypt format.
def to_document
BSON::Document.new({
provider: 'aws',
region: region,
key: key,
}).tap do |bson|
unless endpoint.nil?
bson.update({ endpoint: endpoint })
end
end
end
end
end
end
end
end