core/homeassistant/components/config/__init__.py

134 lines
4.1 KiB
Python

"""Component to configure Home Assistant via an API."""
import asyncio
import os
import voluptuous as vol
from homeassistant.core import callback
from homeassistant.const import EVENT_COMPONENT_LOADED
from homeassistant.bootstrap import (
async_prepare_setup_platform, ATTR_COMPONENT)
from homeassistant.components.frontend import register_built_in_panel
from homeassistant.components.http import HomeAssistantView
from homeassistant.util.yaml import load_yaml, dump
DOMAIN = 'config'
DEPENDENCIES = ['http']
SECTIONS = ('core', 'group', 'hassbian')
ON_DEMAND = ('zwave', )
@asyncio.coroutine
def async_setup(hass, config):
"""Setup the config component."""
register_built_in_panel(hass, 'config', 'Configuration', 'mdi:settings')
@asyncio.coroutine
def setup_panel(panel_name):
"""Setup a panel."""
panel = yield from async_prepare_setup_platform(hass, config, DOMAIN,
panel_name)
if not panel:
return
success = yield from panel.async_setup(hass)
if success:
key = '{}.{}'.format(DOMAIN, panel_name)
hass.bus.async_fire(EVENT_COMPONENT_LOADED, {ATTR_COMPONENT: key})
hass.config.components.add(key)
tasks = [setup_panel(panel_name) for panel_name in SECTIONS]
for panel_name in ON_DEMAND:
if panel_name in hass.config.components:
tasks.append(setup_panel(panel_name))
if tasks:
yield from asyncio.wait(tasks, loop=hass.loop)
@callback
def component_loaded(event):
"""Respond to components being loaded."""
panel_name = event.data.get(ATTR_COMPONENT)
if panel_name in ON_DEMAND:
hass.async_add_job(setup_panel(panel_name))
hass.bus.async_listen(EVENT_COMPONENT_LOADED, component_loaded)
return True
class EditKeyBasedConfigView(HomeAssistantView):
"""Configure a Group endpoint."""
def __init__(self, component, config_type, path, key_schema, data_schema,
*, post_write_hook=None):
"""Initialize a config view."""
self.url = '/api/config/%s/%s/{config_key}' % (component, config_type)
self.name = 'api:config:%s:%s' % (component, config_type)
self.path = path
self.key_schema = key_schema
self.data_schema = data_schema
self.post_write_hook = post_write_hook
@asyncio.coroutine
def get(self, request, config_key):
"""Fetch device specific config."""
hass = request.app['hass']
current = yield from hass.loop.run_in_executor(
None, _read, hass.config.path(self.path))
return self.json(current.get(config_key, {}))
@asyncio.coroutine
def post(self, request, config_key):
"""Validate config and return results."""
try:
data = yield from request.json()
except ValueError:
return self.json_message('Invalid JSON specified', 400)
try:
self.key_schema(config_key)
except vol.Invalid as err:
return self.json_message('Key malformed: {}'.format(err), 400)
try:
# We just validate, we don't store that data because
# we don't want to store the defaults.
self.data_schema(data)
except vol.Invalid as err:
return self.json_message('Message malformed: {}'.format(err), 400)
hass = request.app['hass']
path = hass.config.path(self.path)
current = yield from hass.loop.run_in_executor(None, _read, path)
current.setdefault(config_key, {}).update(data)
yield from hass.loop.run_in_executor(None, _write, path, current)
if self.post_write_hook is not None:
hass.async_add_job(self.post_write_hook(hass))
return self.json({
'result': 'ok',
})
def _read(path):
"""Read YAML helper."""
if not os.path.isfile(path):
with open(path, 'w'):
pass
return {}
return load_yaml(path)
def _write(path, data):
"""Write YAML helper."""
with open(path, 'w', encoding='utf-8') as outfile:
outfile.write(dump(data))