32 lines
1.1 KiB
Python
32 lines
1.1 KiB
Python
# Copyright 2018-2022 Streamlit Inc.
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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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from typing_extensions import Protocol
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from streamlit.proto.ForwardMsg_pb2 import ForwardMsg
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class SessionClientDisconnectedError(Exception):
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"""Raised by operations on a disconnected SessionClient."""
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class SessionClient(Protocol):
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"""Interface for sending data to a session's client."""
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def write_forward_msg(self, msg: ForwardMsg) -> None:
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"""Deliver a ForwardMsg to the client.
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If the SessionClient has been disconnected, it should raise a
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SessionClientDisconnectedError.
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"""
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