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|
"""Support for Airthings sensor."""
from __future__ import annotations
import asyncio
from dataclasses import dataclass
import json
import logging
from aiohttp import ClientError
import async_timeout
_LOGGER = logging.getLogger(__name__)
API_URL = "https://ext-api.airthings.com/v1/"
TIMEOUT = 10
@dataclass
class AirthingsLocation:
"""Airthings location."""
location_id: str
name: str
@classmethod
def init_from_response(cls, response):
"""Class method."""
return cls(
response.get("id"),
response.get("name"),
)
@dataclass
class AirthingsDevice:
"""Airthings device."""
device_id: str
name: str
sensors: dict[str, float | None]
is_active: bool
location_name: str
device_type: str | None
product_name: str | None
@classmethod
def init_from_response(cls, response, location_name, device):
"""Class method."""
return cls(
response.get("id"),
response.get("segment").get("name"),
response.get("data"),
response.get("segment").get("isActive"),
location_name,
device.get('deviceType'),
device.get('productName'),
)
@property
def sensor_types(self):
"""Sensor types."""
return self.sensors.keys()
class AirthingsError(Exception):
"""General Airthings exception occurred."""
class AirthingsConnectionError(AirthingsError):
"""ConnectionError Airthings occurred."""
class AirthingsAuthError(AirthingsError):
"""AirthingsAuthError Airthings occurred."""
class Airthings:
"""Airthings data handler."""
def __init__(self, client_id, secret, websession):
"""Init Airthings data handler."""
self._client_id = client_id
self._secret = secret
self._websession = websession
self._access_token = None
self._locations = []
self._devices = {}
async def update_devices(self):
"""Update data."""
if not self._locations:
response = await self._request(API_URL + "locations")
json_data = await response.json()
self._locations = []
for location in json_data.get("locations"):
self._locations.append(AirthingsLocation.init_from_response(location))
if not self._devices:
response = await self._request(API_URL + "devices")
json_data = await response.json()
self._devices = {}
for device in json_data.get("devices"):
self._devices[device['id']] = device
res = {}
for location in self._locations:
if not location.location_id:
continue
response = await self._request(
API_URL + f"/locations/{location.location_id}/latest-samples"
)
if response is None:
continue
json_data = await response.json()
if json_data is None:
continue
if devices := json_data.get("devices"):
for device in devices:
id = device.get('id')
res[id] = AirthingsDevice.init_from_response(
device,
location.name,
self._devices.get(id)
)
else:
_LOGGER.debug("No devices in location '%s'", location.name)
return res
async def _request(self, url, json_data=None, retry=3):
_LOGGER.debug("Request %s %s, %s", url, retry, json_data)
if self._access_token is None:
self._access_token = await get_token(
self._websession, self._client_id, self._secret
)
if self._access_token is None:
return None
headers = {"Authorization": self._access_token}
try:
async with async_timeout.timeout(TIMEOUT):
if json_data:
response = await self._websession.post(
url, json=json_data, headers=headers
)
else:
response = await self._websession.get(url, headers=headers)
if response.status != 200:
if retry > 0 and response.status != 429:
self._access_token = None
return await self._request(url, json_data, retry=retry - 1)
_LOGGER.error(
"Error connecting to Airthings, response: %s %s",
response.status,
response.reason,
)
raise AirthingsError(
f"Error connecting to Airthings, response: {response.reason}"
)
except ClientError as err:
self._access_token = None
_LOGGER.error("Error connecting to Airthings: %s ", err, exc_info=True)
raise AirthingsError from err
except asyncio.TimeoutError as err:
self._access_token = None
if retry > 0:
return await self._request(url, json_data, retry=retry - 1)
_LOGGER.error("Timed out when connecting to Airthings")
raise AirthingsError from err
return response
async def get_token(websession, client_id, secret, retry=3, timeout=10):
"""Get token for Airthings."""
try:
async with async_timeout.timeout(timeout):
response = await websession.post(
"https://accounts-api.airthings.com/v1/token",
headers={
"Content-type": "application/x-www-form-urlencoded",
"Accept": "application/json",
},
data={
"grant_type": "client_credentials",
"client_id": client_id,
"client_secret": secret,
},
)
except ClientError as err:
if retry > 0:
return await get_token(websession, client_id, secret, retry - 1, timeout)
_LOGGER.error("Error getting token Airthings: %s ", err, exc_info=True)
raise AirthingsConnectionError from err
except asyncio.TimeoutError as err:
if retry > 0:
return await get_token(websession, client_id, secret, retry - 1, timeout)
_LOGGER.error("Timed out when connecting to Airthings for token")
raise AirthingsConnectionError from err
if response.status != 200:
_LOGGER.error(
"Airthings: Failed to login to retrieve token: %s %s",
response.status,
response.reason,
)
raise AirthingsAuthError(f"Failed to login to retrieve token {response.reason}")
token_data = json.loads(await response.text())
return token_data.get("access_token")
|
