codekingpro/portable-devtools

1# Copyright 2015 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"""Defines an enum for classifying RPC methods by streaming semantics."""
15
16import enum
17
18
19@enum.unique
20class Cardinality(enum.Enum):
21    """Describes the streaming semantics of an RPC method."""
22
23    UNARY_UNARY = "request-unary/response-unary"
24    UNARY_STREAM = "request-unary/response-streaming"
25    STREAM_UNARY = "request-streaming/response-unary"
26    STREAM_STREAM = "request-streaming/response-streaming"
27