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Contents
# Copyright 2017 gRPC authors.
#
# 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.
require_relative './structs'
# GRPC contains the General RPC module.
module GRPC
# GoogleRpcStatusUtils provides utilities to convert between a
# GRPC::Core::Status and a deserialized Google::Rpc::Status proto
# Returns nil if the grpc-status-details-bin trailer could not be
# converted to a GoogleRpcStatus due to the server not providing
# the necessary trailers.
# Raises an error if the server did provide the necessary trailers
# but they fail to deseriliaze into a GoogleRpcStatus protobuf.
class GoogleRpcStatusUtils
def self.extract_google_rpc_status(status)
fail ArgumentError, 'bad type' unless status.is_a? Struct::Status
grpc_status_details_bin_trailer = 'grpc-status-details-bin'
binstatus = status.metadata[grpc_status_details_bin_trailer]
return nil if binstatus.nil?
# Lazily load grpc_c and protobuf_c.so for users of this method.
require_relative './grpc'
require 'google/rpc/status_pb'
Google::Rpc::Status.decode(binstatus)
end
end
end
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