lib/mongo/crypt/kms/gcp/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 GCP
# GCP KMS master key document object contains KMS master key parameters.
#
# @api private
class MasterKeyDocument
include KMS::Validations
# @return [ String ] GCP project id.
attr_reader :project_id
# @return [ String ] GCP location.
attr_reader :location
# @return [ String ] GCP KMS key ring.
attr_reader :key_ring
# @return [ String ] GCP KMS key name.
attr_reader :key_name
# @return [ String | nil ] GCP KMS key version.
attr_reader :key_version
# @return [ String | nil ] GCP KMS endpoint.
attr_reader :endpoint
FORMAT_HINT = "GCP key document must be in the format: " +
"{ project_id: 'PROJECT_ID', location: 'LOCATION', " +
"key_ring: 'KEY-RING', key_name: 'KEY-NAME' }"
# Creates a master key document object form a parameters hash.
#
# @param [ Hash ] opts A hash that contains master key options for
# the GCP KMS provider.
# @option opts [ String ] :project_id GCP project id.
# @option opts [ String ] :location GCP location.
# @option opts [ String ] :key_ring GCP KMS key ring.
# @option opts [ String ] :key_name GCP KMS key name.
# @option opts [ String | nil ] :key_version GCP KMS key version, optional.
# @option opts [ String | nil ] :endpoint GCP KMS key endpoint, optional.
#
# @raise [ ArgumentError ] If required options are missing or incorrectly.
def initialize(opts)
if opts.empty?
@empty = true
return
end
@project_id = validate_param(:project_id, opts, FORMAT_HINT)
@location = validate_param(:location, opts, FORMAT_HINT)
@key_ring = validate_param(:key_ring, opts, FORMAT_HINT)
@key_name = validate_param(:key_name, opts, FORMAT_HINT)
@key_version = validate_param(:key_version, opts, FORMAT_HINT, required: false)
@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 ] GCP KMS credentials in libmongocrypt format.
def to_document
return BSON::Document.new({}) if @empty
BSON::Document.new({
provider: 'gcp',
projectId: project_id,
location: location,
keyRing: key_ring,
keyName: key_name
}).tap do |bson|
unless key_version.nil?
bson.update({ keyVersion: key_version })
end
unless endpoint.nil?
bson.update({ endpoint: endpoint })
end
end
end
end
end
end
end
end