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67 lines
2.1 KiB
Python
67 lines
2.1 KiB
Python
"""A pure python implementation of multicast DNS service discovery.
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Licensed under LGPL-2.1-or-later; see COPYING for details. This file is
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part of a continuously modified work; modification dates are recorded
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in the project's git history.
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"""
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from __future__ import annotations
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from typing import TYPE_CHECKING
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from ._dns import DNSRecord
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from ._record_update import RecordUpdate
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if TYPE_CHECKING:
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from ._core import Zeroconf
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float_ = float
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class RecordUpdateListener:
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"""Base call for all record listeners.
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All listeners passed to async_add_listener should use RecordUpdateListener
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as a base class. In the future it will be required.
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"""
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def async_update_records(self, zc: Zeroconf, now: float_, records: list[RecordUpdate]) -> None:
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"""Update multiple records in one shot.
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All records that are received in a single packet are passed
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to update_records.
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This implementation is a compatibility shim to ensure older code
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that uses RecordUpdateListener as a base class will continue to
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get calls to update_record. This method will raise
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NotImplementedError in a future version.
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At this point the cache will not have the new records
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Records are passed as a list of RecordUpdate. This
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allows consumers of async_update_records to avoid cache lookups.
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This method will be run in the event loop.
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"""
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for record in records:
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self.update_record(zc, now, record.new)
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def async_update_records_complete(self) -> None:
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"""Called when a record update has completed for all handlers.
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At this point the cache will have the new records.
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This method will be run in the event loop.
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"""
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def update_record( # pylint: disable=no-self-use
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self, zc: Zeroconf, now: float, record: DNSRecord
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) -> None:
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"""Update a single record.
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This method is deprecated and will be removed in a future version.
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update_records should be implemented instead.
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"""
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raise RuntimeError("update_record is deprecated and will be removed in a future version.")
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