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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
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56 lines
1.9 KiB
56 lines
1.9 KiB
# Copyright 2019 The gRPC Authors |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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"""This example handles rich error status in client-side.""" |
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from __future__ import print_function |
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import logging |
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import grpc |
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from grpc_status import rpc_status |
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from google.rpc import error_details_pb2 |
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from examples.protos import helloworld_pb2 |
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from examples.protos import helloworld_pb2_grpc |
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_LOGGER = logging.getLogger(__name__) |
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def process(stub): |
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try: |
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response = stub.SayHello(helloworld_pb2.HelloRequest(name='Alice')) |
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_LOGGER.info('Call success: %s', response.message) |
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except grpc.RpcError as rpc_error: |
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_LOGGER.error('Call failure: %s', rpc_error) |
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status = rpc_status.from_call(rpc_error) |
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for detail in status.details: |
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if detail.Is(error_details_pb2.QuotaFailure.DESCRIPTOR): |
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info = error_details_pb2.QuotaFailure() |
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detail.Unpack(info) |
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_LOGGER.error('Quota failure: %s', info) |
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else: |
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raise RuntimeError('Unexpected failure: %s' % detail) |
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def main(): |
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# NOTE(gRPC Python Team): .close() is possible on a channel and should be |
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# used in circumstances in which the with statement does not fit the needs |
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# of the code. |
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with grpc.insecure_channel('localhost:50051') as channel: |
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stub = helloworld_pb2_grpc.GreeterStub(channel) |
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process(stub) |
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if __name__ == '__main__': |
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logging.basicConfig() |
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main()
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