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# Copyright 2022 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.
"""Common types for gRPC Sync API"""
from typing import (TYPE_CHECKING, Any, Callable, Iterable, Iterator, Optional,
Sequence, Tuple, TypeVar, Union)
from grpc._cython import cygrpc
if TYPE_CHECKING:
from grpc import ServicerContext
from grpc._server import _RPCState
RequestType = TypeVar('RequestType')
ResponseType = TypeVar('ResponseType')
SerializingFunction = Callable[[Any], bytes]
DeserializingFunction = Callable[[bytes], Any]
MetadataType = Sequence[Tuple[str, Union[str, bytes]]]
ChannelArgumentType = Tuple[str, Any]
DoneCallbackType = Callable[[Any], None]
NullaryCallbackType = Callable[[], None]
RequestIterableType = Iterable[Any]
ResponseIterableType = Iterable[Any]
UserTag = Callable[[cygrpc.BaseEvent], bool]
IntegratedCallFactory = Callable[[
int, bytes, None, Optional[float], Optional[MetadataType], Optional[
cygrpc.CallCredentials], Sequence[Sequence[cygrpc.
Operation]], UserTag, Any
], cygrpc.IntegratedCall]
ServerTagCallbackType = Tuple[Optional['_RPCState'],
Sequence[NullaryCallbackType]]
ServerCallbackTag = Callable[[cygrpc.BaseEvent], ServerTagCallbackType]
ArityAgnosticMethodHandler = Union[
Callable[[RequestType, 'ServicerContext', Callable[[ResponseType], None]],
ResponseType],
Callable[[RequestType, 'ServicerContext', Callable[[ResponseType], None]],
Iterator[ResponseType]],
Callable[[
Iterator[RequestType], 'ServicerContext', Callable[[ResponseType], None]
], ResponseType], Callable[[
Iterator[RequestType], 'ServicerContext', Callable[[ResponseType], None]
], Iterator[ResponseType]], Callable[[RequestType, 'ServicerContext'],
ResponseType],
Callable[[RequestType, 'ServicerContext'], Iterator[ResponseType]],
Callable[[Iterator[RequestType], 'ServicerContext'],
ResponseType], Callable[[Iterator[RequestType], 'ServicerContext'],
Iterator[ResponseType]]]
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