78 lines
2.2 KiB
Python
78 lines
2.2 KiB
Python
from __future__ import annotations
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import logging
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from dataclasses import dataclass
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import requests
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from app.ha.exceptions import (
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HaAuthError,
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HaHttpError,
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HaTimeoutError,
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HaUnexpectedPayloadError,
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)
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logger = logging.getLogger(__name__)
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@dataclass(frozen=True)
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class HaClientSettings:
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url: str
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token: str
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timeout_seconds: int = 10
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class HaClient:
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def __init__(self, settings: HaClientSettings) -> None:
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self._settings = settings
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self._session = requests.Session()
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self._session.headers.update({
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"Authorization": f"Bearer {settings.token}",
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"Content-Type": "application/json",
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})
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def close(self) -> None:
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self._session.close()
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def list_entities(self) -> list[dict[str, object]]:
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try:
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response = self._session.get(
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f"{self._settings.url.rstrip('/')}/api/states",
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timeout=self._settings.timeout_seconds,
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)
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except requests.Timeout as exc:
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raise HaTimeoutError("Zeitüberschreitung beim Zugriff auf Home Assistant.") from exc
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except requests.RequestException as exc:
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raise HaHttpError(
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getattr(getattr(exc, "response", None), "status_code", 502),
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"Netzwerkfehler beim Zugriff auf Home Assistant.",
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) from exc
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if response.status_code in (401, 403):
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raise HaAuthError(
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response.status_code,
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"Authentifizierung bei Home Assistant fehlgeschlagen.",
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)
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try:
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response.raise_for_status()
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except requests.HTTPError as exc:
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raise HaHttpError(
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response.status_code,
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"Home Assistant meldet einen Fehler.",
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) from exc
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try:
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payload = response.json()
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except ValueError as exc:
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raise HaUnexpectedPayloadError(
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"Antwort von Home Assistant ist kein gültiges JSON."
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) from exc
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if not isinstance(payload, list):
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raise HaUnexpectedPayloadError(
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"Antwort von Home Assistant hat unerwartetes Format."
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)
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return payload
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