35 lines
745 B
Python
35 lines
745 B
Python
"""Helper to create a unique instance ID."""
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from __future__ import annotations
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import uuid
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from homeassistant.core import HomeAssistant
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from . import singleton, storage
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DATA_KEY = "core.uuid"
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DATA_VERSION = 1
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LEGACY_UUID_FILE = ".uuid"
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@singleton.singleton(DATA_KEY)
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async def async_get(hass: HomeAssistant) -> str:
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"""Get unique ID for the hass instance."""
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store = storage.Store(hass, DATA_VERSION, DATA_KEY, True)
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data: dict[str, str] | None = await storage.async_migrator( # type: ignore
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hass,
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hass.config.path(LEGACY_UUID_FILE),
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store,
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)
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if data is not None:
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return data["uuid"]
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data = {"uuid": uuid.uuid4().hex}
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await store.async_save(data)
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return data["uuid"]
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