supervisor/hassio/updater.py
Pascal Vizeli 8d468328f3 Expose new function to add-ons (#138)
* Expose new function to add-ons

* Rename `hassio` to `hassio_api`

* fix lint

* done
2017-08-08 16:54:42 +02:00

87 lines
2.5 KiB
Python

"""Fetch last versions from webserver."""
import asyncio
from datetime import timedelta
import json
import logging
import aiohttp
import async_timeout
from .const import (
URL_HASSIO_VERSION, FILE_HASSIO_UPDATER, ATTR_HOMEASSISTANT, ATTR_HASSIO,
ATTR_BETA_CHANNEL)
from .tools import AsyncThrottle, JsonConfig
from .validate import SCHEMA_UPDATER_CONFIG
_LOGGER = logging.getLogger(__name__)
class Updater(JsonConfig):
"""Fetch last versions from version.json."""
def __init__(self, config, loop, websession):
"""Initialize updater."""
super().__init__(FILE_HASSIO_UPDATER, SCHEMA_UPDATER_CONFIG)
self.config = config
self.loop = loop
self.websession = websession
@property
def version_homeassistant(self):
"""Return last version of homeassistant."""
return self._data.get(ATTR_HOMEASSISTANT)
@property
def version_hassio(self):
"""Return last version of hassio."""
return self._data.get(ATTR_HASSIO)
@property
def upstream(self):
"""Return Upstream branch for version."""
if self.beta_channel:
return 'dev'
return 'master'
@property
def beta_channel(self):
"""Return True if we run in beta upstream."""
return self._data[ATTR_BETA_CHANNEL]
@beta_channel.setter
def beta_channel(self, value):
"""Set beta upstream mode."""
self._data[ATTR_BETA_CHANNEL] = bool(value)
self.save()
@AsyncThrottle(timedelta(seconds=60))
async def fetch_data(self):
"""Fetch current versions from github.
Is a coroutine.
"""
url = URL_HASSIO_VERSION.format(self.upstream)
try:
_LOGGER.info("Fetch update data from %s", url)
with async_timeout.timeout(10, loop=self.loop):
async with self.websession.get(url) as request:
data = await request.json(content_type=None)
except (aiohttp.ClientError, asyncio.TimeoutError, KeyError) as err:
_LOGGER.warning("Can't fetch versions from %s -> %s", url, err)
return
except json.JSONDecodeError as err:
_LOGGER.warning("Can't parse versions from %s -> %s", url, err)
return
# data valid?
if not data:
_LOGGER.warning("Invalid data from %s", url)
return
# update versions
self._data[ATTR_HOMEASSISTANT] = data.get('homeassistant')
self._data[ATTR_HASSIO] = data.get('hassio')
self.save()