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Met.no weather platform (#16582) 

* Add met.no weather component

* requirements .coveragerx

* use lib

* style

* style

* renam function to _fetch_data

* Only update once per hour

* style
pull/16743/head
Daniel Høyer Iversen 2018-09-20 10:32:14 +02:00 committed by GitHub
parent d3658c4af9
commit aa7635398a
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1
.coveragerc
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@ -821,6 +821,7 @@ omit =
homeassistant/components/weather/bom.py
homeassistant/components/weather/buienradar.py
homeassistant/components/weather/darksky.py
homeassistant/components/weather/met.py
homeassistant/components/weather/metoffice.py
homeassistant/components/weather/openweathermap.py
homeassistant/components/weather/zamg.py

225
homeassistant/components/weather/met.py Normal file
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@ -0,0 +1,225 @@
"""
Support for Met.no weather service.
For more details about this platform, please refer to the documentation at
https://home-assistant.io/components/weather.met/
"""
import logging
from random import randrange
import voluptuous as vol
from homeassistant.components.weather import PLATFORM_SCHEMA, WeatherEntity
from homeassistant.const import (CONF_ELEVATION, CONF_LATITUDE, CONF_LONGITUDE,
CONF_NAME, TEMP_CELSIUS)
from homeassistant.helpers import config_validation as cv
from homeassistant.helpers.aiohttp_client import async_get_clientsession
from homeassistant.helpers.event import (async_track_utc_time_change,
async_call_later)
from homeassistant.util import dt as dt_util
REQUIREMENTS = ['pyMetno==0.2.0']
_LOGGER = logging.getLogger(__name__)
CONF_ATTRIBUTION = "Weather forecast from met.no, delivered " \
"by the Norwegian Meteorological Institute."
DEFAULT_NAME = "Met.no"
# https://api.met.no/weatherapi/weathericon/_/documentation/#___top
CONDITIONS = {1: 'sunny',
2: 'partlycloudy',
3: 'partlycloudy',
4: 'cloudy',
5: 'rainy',
6: 'lightning-rainy',
7: 'snowy-rainy',
8: 'snowy',
9: 'rainy',
10: 'rainy',
11: 'lightning-rainy',
12: 'snowy-rainy',
13: 'snowy',
14: 'snowy',
15: 'fog',
20: 'lightning-rainy',
21: 'lightning-rainy',
22: 'lightning-rainy',
23: 'lightning-rainy',
24: 'lightning-rainy',
25: 'lightning-rainy',
26: 'lightning-rainy',
27: 'lightning-rainy',
28: 'lightning-rainy',
29: 'lightning-rainy',
30: 'lightning-rainy',
31: 'lightning-rainy',
32: 'lightning-rainy',
33: 'lightning-rainy',
34: 'lightning-rainy',
40: 'rainy',
41: 'rainy',
42: 'snowy-rainy',
43: 'snowy-rainy',
44: 'snowy',
45: 'snowy',
46: 'rainy',
47: 'snowy-rainy',
48: 'snowy-rainy',
49: 'snowy',
50: 'snowy',
}
URL = 'https://aa015h6buqvih86i1.api.met.no/weatherapi/locationforecast/1.9/'
PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
vol.Inclusive(CONF_LATITUDE, 'coordinates',
'Latitude and longitude must exist together'): cv.latitude,
vol.Inclusive(CONF_LONGITUDE, 'coordinates',
'Latitude and longitude must exist together'): cv.longitude,
})
async def async_setup_platform(hass, config, async_add_entities,
discovery_info=None):
"""Set up the Met.no weather platform."""
elevation = config.get(CONF_ELEVATION, hass.config.elevation or 0)
latitude = config.get(CONF_LATITUDE, hass.config.latitude)
longitude = config.get(CONF_LONGITUDE, hass.config.longitude)
name = config.get(CONF_NAME)
if None in (latitude, longitude):
_LOGGER.error("Latitude or longitude not set in Home Assistant config")
return
coordinates = {
'lat': str(latitude),
'lon': str(longitude),
'msl': str(elevation),
}
async_add_entities([MetWeather(name, coordinates,
async_get_clientsession(hass))])
class MetWeather(WeatherEntity):
"""Implementation of a Met.no weather condition."""
def __init__(self, name, coordinates, clientsession):
"""Initialise the platform with a data instance and site."""
import metno
self._name = name
self._weather_data = metno.MetWeatherData(coordinates,
clientsession,
URL
)
self._temperature = None
self._condition = None
self._pressure = None
self._humidity = None
self._wind_speed = None
self._wind_bearing = None
async def async_added_to_hass(self):
"""Start fetching data."""
await self._fetch_data()
async_track_utc_time_change(self.hass, self._update,
minute=31, second=0)
async def _fetch_data(self, *_):
"""Get the latest data from met.no."""
if not await self._weather_data.fetching_data():
# Retry in 15 to 20 minutes.
minutes = 15 + randrange(6)
_LOGGER.error("Retrying in %i minutes", minutes)
async_call_later(self.hass, minutes*60, self._fetch_data)
return
async_call_later(self.hass, 60*60, self._fetch_data)
await self._update()
@property
def should_poll(self):
"""No polling needed."""
return False
async def _update(self, *_):
"""Get the latest data from Met.no."""
import metno
if self._weather_data is None:
return
now = dt_util.utcnow()
ordered_entries = []
for time_entry in self._weather_data.data['product']['time']:
valid_from = dt_util.parse_datetime(time_entry['@from'])
valid_to = dt_util.parse_datetime(time_entry['@to'])
if now >= valid_to:
# Has already passed. Never select this.
continue
average_dist = (abs((valid_to - now).total_seconds()) +
abs((valid_from - now).total_seconds()))
ordered_entries.append((average_dist, time_entry))
if not ordered_entries:
return
ordered_entries.sort(key=lambda item: item[0])
self._temperature = metno.get_forecast('temperature', ordered_entries)
self._condition = CONDITIONS.get(metno.get_forecast('symbol',
ordered_entries))
self._pressure = metno.get_forecast('pressure', ordered_entries)
self._humidity = metno.get_forecast('humidity', ordered_entries)
self._wind_speed = metno.get_forecast('windSpeed', ordered_entries)
self._wind_bearing = metno.get_forecast('windDirection',
ordered_entries)
self.async_schedule_update_ha_state()
@property
def name(self):
"""Return the name of the sensor."""
return self._name
@property
def condition(self):
"""Return the current condition."""
return self._condition
@property
def temperature(self):
"""Return the temperature."""
return self._temperature
@property
def temperature_unit(self):
"""Return the unit of measurement."""
return TEMP_CELSIUS
@property
def pressure(self):
"""Return the pressure."""
return self._pressure
@property
def humidity(self):
"""Return the humidity."""
return self._humidity
@property
def wind_speed(self):
"""Return the wind speed."""
return self._wind_speed
@property
def wind_bearing(self):
"""Return the wind direction."""
return self._wind_bearing
@property
def attribution(self):
"""Return the attribution."""
return CONF_ATTRIBUTION

3
requirements_all.txt
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@ -751,6 +751,9 @@ pyCEC==0.4.13
# homeassistant.components.switch.tplink
pyHS100==0.3.3
# homeassistant.components.weather.met
pyMetno==0.2.0
# homeassistant.components.rfxtrx
pyRFXtrx==0.23