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# Copyright 2015 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.
"""Utilities for RPC Framework's Face interface."""
import collections
# stream is referenced from specification in this module.
from grpc.framework.common import cardinality
from grpc.framework.common import style
from grpc.framework.foundation import stream # pylint: disable=unused-import
from grpc.framework.interfaces.face import face
class _MethodImplementation(
face.MethodImplementation,
collections.namedtuple(
"_MethodImplementation",
[
"cardinality",
"style",
"unary_unary_inline",
"unary_stream_inline",
"stream_unary_inline",
"stream_stream_inline",
"unary_unary_event",
"unary_stream_event",
"stream_unary_event",
"stream_stream_event",
],
),
):
pass
def unary_unary_inline(behavior):
"""Creates an face.MethodImplementation for the given behavior.
Args:
behavior: The implementation of a unary-unary RPC method as a callable value
that takes a request value and an face.ServicerContext object and
returns a response value.
Returns:
An face.MethodImplementation derived from the given behavior.
"""
return _MethodImplementation(
cardinality.Cardinality.UNARY_UNARY,
style.Service.INLINE,
behavior,
None,
None,
None,
None,
None,
None,
None,
)
def unary_stream_inline(behavior):
"""Creates an face.MethodImplementation for the given behavior.
Args:
behavior: The implementation of a unary-stream RPC method as a callable
value that takes a request value and an face.ServicerContext object and
returns an iterator of response values.
Returns:
An face.MethodImplementation derived from the given behavior.
"""
return _MethodImplementation(
cardinality.Cardinality.UNARY_STREAM,
style.Service.INLINE,
None,
behavior,
None,
None,
None,
None,
None,
None,
)
def stream_unary_inline(behavior):
"""Creates an face.MethodImplementation for the given behavior.
Args:
behavior: The implementation of a stream-unary RPC method as a callable
value that takes an iterator of request values and an
face.ServicerContext object and returns a response value.
Returns:
An face.MethodImplementation derived from the given behavior.
"""
return _MethodImplementation(
cardinality.Cardinality.STREAM_UNARY,
style.Service.INLINE,
None,
None,
behavior,
None,
None,
None,
None,
None,
)
def stream_stream_inline(behavior):
"""Creates an face.MethodImplementation for the given behavior.
Args:
behavior: The implementation of a stream-stream RPC method as a callable
value that takes an iterator of request values and an
face.ServicerContext object and returns an iterator of response values.
Returns:
An face.MethodImplementation derived from the given behavior.
"""
return _MethodImplementation(
cardinality.Cardinality.STREAM_STREAM,
style.Service.INLINE,
None,
None,
None,
behavior,
None,
None,
None,
None,
)
def unary_unary_event(behavior):
"""Creates an face.MethodImplementation for the given behavior.
Args:
behavior: The implementation of a unary-unary RPC method as a callable
value that takes a request value, a response callback to which to pass
the response value of the RPC, and an face.ServicerContext.
Returns:
An face.MethodImplementation derived from the given behavior.
"""
return _MethodImplementation(
cardinality.Cardinality.UNARY_UNARY,
style.Service.EVENT,
None,
None,
None,
None,
behavior,
None,
None,
None,
)
def unary_stream_event(behavior):
"""Creates an face.MethodImplementation for the given behavior.
Args:
behavior: The implementation of a unary-stream RPC method as a callable
value that takes a request value, a stream.Consumer to which to pass the
the response values of the RPC, and an face.ServicerContext.
Returns:
An face.MethodImplementation derived from the given behavior.
"""
return _MethodImplementation(
cardinality.Cardinality.UNARY_STREAM,
style.Service.EVENT,
None,
None,
None,
None,
None,
behavior,
None,
None,
)
def stream_unary_event(behavior):
"""Creates an face.MethodImplementation for the given behavior.
Args:
behavior: The implementation of a stream-unary RPC method as a callable
value that takes a response callback to which to pass the response value
of the RPC and an face.ServicerContext and returns a stream.Consumer to
which the request values of the RPC should be passed.
Returns:
An face.MethodImplementation derived from the given behavior.
"""
return _MethodImplementation(
cardinality.Cardinality.STREAM_UNARY,
style.Service.EVENT,
None,
None,
None,
None,
None,
None,
behavior,
None,
)
def stream_stream_event(behavior):
"""Creates an face.MethodImplementation for the given behavior.
Args:
behavior: The implementation of a stream-stream RPC method as a callable
value that takes a stream.Consumer to which to pass the response values
of the RPC and an face.ServicerContext and returns a stream.Consumer to
which the request values of the RPC should be passed.
Returns:
An face.MethodImplementation derived from the given behavior.
"""
return _MethodImplementation(
cardinality.Cardinality.STREAM_STREAM,
style.Service.EVENT,
None,
None,
None,
None,
None,
None,
None,
behavior,
)
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