mirror of
https://github.com/blakeblackshear/frigate.git
synced 2026-09-26 00:28:58 +03:00
Josh HawkinsandNicolas Mowen
ad04101c76
* refactor mqtt so that Frigate owns the transport lifecycle instead of delegating it to paho * release the shutdown barrier on worker crash and replay retained publishes the broker never acked * collapse in-flight retained values by topic and release the shutdown barrier from a finally * replay the outage buffer before the publish queue so newer values are not reverted
39 lines
1.1 KiB
Python
39 lines
1.1 KiB
Python
from abc import ABC, abstractmethod
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from collections.abc import Callable
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from typing import TYPE_CHECKING, Any
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if TYPE_CHECKING:
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from frigate.comms.dispatcher import Dispatcher
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class Communicator(ABC):
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"""pub/sub model via specific protocol."""
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def attach_dispatcher(self, dispatcher: "Dispatcher") -> None:
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"""Receive the owning dispatcher.
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Transports that need more than the receiver callback (the command topic
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surface, the snapshot API) take it here rather than reaching through the
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bound receiver.
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"""
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return None
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def start(self) -> None:
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"""Start background I/O after receiver wiring is complete."""
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return None
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@abstractmethod
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def publish(self, topic: str, payload: Any, retain: bool = False) -> None:
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"""Send data via specific protocol."""
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pass
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@abstractmethod
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def subscribe(self, receiver: Callable) -> None:
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"""Pass receiver so communicators can pass commands."""
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pass
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@abstractmethod
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def stop(self) -> None:
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"""Stop the communicator."""
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pass
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