1# Copyright 2017 gRPC authors. 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14 15require_relative './structs' 16 17# GRPC contains the General RPC module. 18module GRPC 19 # GoogleRpcStatusUtils provides utilities to convert between a 20 # GRPC::Core::Status and a deserialized Google::Rpc::Status proto 21 # Returns nil if the grpc-status-details-bin trailer could not be 22 # converted to a GoogleRpcStatus due to the server not providing 23 # the necessary trailers. 24 # Raises an error if the server did provide the necessary trailers 25 # but they fail to deseriliaze into a GoogleRpcStatus protobuf. 26 class GoogleRpcStatusUtils 27 def self.extract_google_rpc_status(status) 28 fail ArgumentError, 'bad type' unless status.is_a? Struct::Status 29 grpc_status_details_bin_trailer = 'grpc-status-details-bin' 30 binstatus = status.metadata[grpc_status_details_bin_trailer] 31 return nil if binstatus.nil? 32 33 # Lazily load grpc_c and protobuf_c.so for users of this method. 34 require_relative './grpc' 35 require 'google/rpc/status_pb' 36 37 Google::Rpc::Status.decode(binstatus) 38 end 39 end 40end 41