mirror of
https://github.com/home-assistant/core.git
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439a393816
* Use runtime_data in deconz * Adjust master logic * Simplify * Move DeconzConfigEntry definition * More TYPE_CHECKING * Apply suggestions from code review
32 lines
847 B
Python
32 lines
847 B
Python
"""Utilities for deCONZ integration."""
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from __future__ import annotations
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from typing import TYPE_CHECKING
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from homeassistant.core import HomeAssistant, callback
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from .const import DOMAIN
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from .hub import DeconzHub
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if TYPE_CHECKING:
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from . import DeconzConfigEntry
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def serial_from_unique_id(unique_id: str | None) -> str | None:
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"""Get a device serial number from a unique ID, if possible."""
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if not unique_id or unique_id.count(":") != 7:
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return None
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return unique_id.partition("-")[0]
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@callback
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def get_master_hub(hass: HomeAssistant) -> DeconzHub:
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"""Return the gateway which is marked as master."""
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entry: DeconzConfigEntry
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hub: DeconzHub
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for entry in hass.config_entries.async_loaded_entries(DOMAIN):
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if (hub := entry.runtime_data).master:
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return hub
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raise ValueError
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