mirror of
https://github.com/home-assistant/supervisor.git
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143 lines
4.0 KiB
Python
143 lines
4.0 KiB
Python
"""Tools file for HassIO."""
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import asyncio
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from contextlib import suppress
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import json
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import logging
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import socket
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import aiohttp
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import async_timeout
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import pytz
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import voluptuous as vol
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from voluptuous.humanize import humanize_error
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from .const import URL_HASSIO_VERSION, URL_HASSIO_VERSION_BETA
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_LOGGER = logging.getLogger(__name__)
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FREEGEOIP_URL = "https://freegeoip.io/json/"
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async def fetch_last_versions(websession, beta=False):
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"""Fetch current versions from github.
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Is a coroutine.
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"""
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url = URL_HASSIO_VERSION_BETA if beta else URL_HASSIO_VERSION
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try:
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with async_timeout.timeout(10, loop=websession.loop):
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async with websession.get(url) as request:
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return await request.json(content_type=None)
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except (aiohttp.ClientError, asyncio.TimeoutError, KeyError) as err:
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_LOGGER.warning("Can't fetch versions from %s! %s", url, err)
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except json.JSONDecodeError as err:
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_LOGGER.warning("Can't parse versions from %s! %s", url, err)
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def get_local_ip(loop):
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"""Retrieve local IP address.
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Return a future.
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"""
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def local_ip():
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"""Return local ip."""
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try:
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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# Use Google Public DNS server to determine own IP
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sock.connect(('8.8.8.8', 80))
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return sock.getsockname()[0]
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except socket.error:
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return socket.gethostbyname(socket.gethostname())
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finally:
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sock.close()
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return loop.run_in_executor(None, local_ip)
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def write_json_file(jsonfile, data):
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"""Write a json file."""
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try:
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json_str = json.dumps(data, indent=2)
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with jsonfile.open('w') as conf_file:
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conf_file.write(json_str)
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except (OSError, json.JSONDecodeError):
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return False
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return True
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def read_json_file(jsonfile):
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"""Read a json file and return a dict."""
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with jsonfile.open('r') as cfile:
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return json.loads(cfile.read())
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def validate_timezone(timezone):
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"""Validate voluptuous timezone."""
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try:
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pytz.timezone(timezone)
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except pytz.exceptions.UnknownTimeZoneError:
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raise vol.Invalid(
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"Invalid time zone passed in. Valid options can be found here: "
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"http://en.wikipedia.org/wiki/List_of_tz_database_time_zones") \
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from None
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return timezone
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async def fetch_timezone(websession):
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"""Read timezone from freegeoip."""
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data = {}
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with suppress(aiohttp.ClientError, asyncio.TimeoutError,
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json.JSONDecodeError, KeyError):
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with async_timeout.timeout(10, loop=websession.loop):
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async with websession.get(FREEGEOIP_URL) as request:
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data = await request.json()
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return data.get('time_zone', 'UTC')
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class JsonConfig(object):
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"""Hass core object for handle it."""
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def __init__(self, json_file, schema):
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"""Initialize hass object."""
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self._file = json_file
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self._schema = schema
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self._data = {}
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# init or load data
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if self._file.is_file():
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try:
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self._data = read_json_file(self._file)
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except (OSError, json.JSONDecodeError):
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_LOGGER.warning("Can't read %s", self._file)
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self._data = {}
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# validate
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try:
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self._data = self._schema(self._data)
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except vol.Invalid as ex:
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_LOGGER.error("Can't parse %s -> %s",
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self._file, humanize_error(self._data, ex))
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def save(self):
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"""Store data to config file."""
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# validate
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try:
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self._data = self._schema(self._data)
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except vol.Invalid as ex:
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_LOGGER.error("Can't parse data -> %s",
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humanize_error(self._data, ex))
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return False
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# write
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if not write_json_file(self._file, self._data):
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_LOGGER.error("Can't store config in %s", self._file)
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return False
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return True
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