lib/mongo/crypt/kms/azure/credentials.rb
# frozen_string_literal: true
# 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 Azure
# Azure KMS Credentials object contains credentials for using Azure KMS provider.
#
# @api private
class Credentials
extend Forwardable
include KMS::Validations
# @return [ String ] Azure tenant id.
attr_reader :tenant_id
# @return [ String ] Azure client id.
attr_reader :client_id
# @return [ String ] Azure client secret.
attr_reader :client_secret
# @return [ String | nil ] Azure identity platform endpoint.
attr_reader :identity_platform_endpoint
# @return [ String | nil ] Azure access token.
attr_reader :access_token
# @api private
def_delegator :@opts, :empty?
FORMAT_HINT = 'Azure KMS provider options must be in the format: \
{ tenant_id: "TENANT-ID", client_id: "TENANT_ID", client_secret: "CLIENT_SECRET" }'
# Creates an Azure KMS credentials object form a parameters hash.
#
# @param [ Hash ] opts A hash that contains credentials for
# Azure KMS provider
# @option opts [ String ] :tenant_id Azure tenant id.
# @option opts [ String ] :client_id Azure client id.
# @option opts [ String ] :client_secret Azure client secret.
# @option opts [ String | nil ] :identity_platform_endpoint Azure
# identity platform endpoint, optional.
#
# @raise [ ArgumentError ] If required options are missing or incorrectly
# formatted.
def initialize(opts)
@opts = opts
return if empty?
if opts[:access_token]
@access_token = opts[:access_token]
else
@tenant_id = validate_param(:tenant_id, opts, FORMAT_HINT)
@client_id = validate_param(:client_id, opts, FORMAT_HINT)
@client_secret = validate_param(:client_secret, opts, FORMAT_HINT)
@identity_platform_endpoint = validate_param(
:identity_platform_endpoint, opts, FORMAT_HINT, required: false
)
end
end
# Convert credentials object to a BSON document in libmongocrypt format.
#
# @return [ BSON::Document ] Azure KMS credentials in libmongocrypt format.
def to_document
return BSON::Document.new if empty?
if access_token
BSON::Document.new({ accessToken: access_token })
else
BSON::Document.new(
{
tenantId: @tenant_id,
clientId: @client_id,
clientSecret: @client_secret
}
).tap do |bson|
unless identity_platform_endpoint.nil?
bson.update({ identityPlatformEndpoint: identity_platform_endpoint })
end
end
end
end
end
end
end
end
end