32 lines
1010 B
Python
32 lines
1010 B
Python
from abc import ABC, abstractmethod
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from typing import Dict, Tuple
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from libp2p.typing import NegotiableTransport, StreamHandlerFn, TProtocol
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class IMultiselectMuxer(ABC):
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"""
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Multiselect module that is responsible for responding to
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a multiselect client and deciding on
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a specific protocol and handler pair to use for communication
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"""
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handlers: Dict[TProtocol, StreamHandlerFn]
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@abstractmethod
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def add_handler(self, protocol: TProtocol, handler: StreamHandlerFn) -> None:
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"""
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Store the handler with the given protocol
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:param protocol: protocol name
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:param handler: handler function
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"""
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@abstractmethod
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async def negotiate(self, stream: NegotiableTransport) -> Tuple[TProtocol, StreamHandlerFn]:
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"""
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Negotiate performs protocol selection
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:param stream: stream to negotiate on
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:return: selected protocol name, handler function
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:raise Exception: negotiation failed exception
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"""
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