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# 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 Local
# Local KMS Credentials object contains credentials for using local KMS provider.
#
# @api private
class Credentials
extend Forwardable
include KMS::Validations
# @return [ String ] Master key.
attr_reader :key
# @api private
def_delegator :@opts, :empty?
FORMAT_HINT = "Local KMS provider options must be in the format: " +
"{ key: 'MASTER-KEY' }"
# Creates a local KMS credentials object form a parameters hash.
#
# @param [ Hash ] opts A hash that contains credentials for
# local KMS provider
# @option opts [ String ] :key Master key.
#
# @raise [ ArgumentError ] If required options are missing or incorrectly
# formatted.
def initialize(opts)
@opts = opts
unless empty?
@key = validate_param(:key, opts, FORMAT_HINT)
end
end
# @return [ BSON::Document ] Local KMS credentials in libmongocrypt format.
def to_document
return BSON::Document.new({}) if empty?
BSON::Document.new({
key: BSON::Binary.new(@key, :generic),
})
end
end
end
end
end
end
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