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# Copyright 2020 The 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.
"""Reference implementation for status mapping in gRPC Python."""
from google.rpc import status_pb2
from grpc.experimental import aio
from ._common import GRPC_DETAILS_METADATA_KEY
from ._common import code_to_grpc_status_code
async def from_call(call: aio.Call):
"""Returns a google.rpc.status.Status message from a given grpc.aio.Call.
This is an EXPERIMENTAL API.
Args:
call: An grpc.aio.Call instance.
Returns:
A google.rpc.status.Status message representing the status of the RPC.
"""
code = await call.code()
details = await call.details()
trailing_metadata = await call.trailing_metadata()
if trailing_metadata is None:
return None
for key, value in trailing_metadata:
if key == GRPC_DETAILS_METADATA_KEY:
rich_status = status_pb2.Status.FromString(value)
if code.value[0] != rich_status.code:
raise ValueError(
"Code in Status proto (%s) doesn't match status code (%s)"
% (code_to_grpc_status_code(rich_status.code), code)
)
if details != rich_status.message:
raise ValueError(
"Message in Status proto (%s) doesn't match status details"
" (%s)" % (rich_status.message, details)
)
return rich_status
return None
__all__ = [
"from_call",
]
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