core/homeassistant/components/mailbox/__init__.py

255 lines
7.6 KiB
Python

"""
Provides functionality for mailboxes.
For more details about this component, please refer to the documentation at
https://home-assistant.io/components/mailbox/
"""
import asyncio
import logging
from contextlib import suppress
from datetime import timedelta
import async_timeout
from aiohttp import web
from aiohttp.web_exceptions import HTTPNotFound
from homeassistant.core import callback
from homeassistant.helpers import config_per_platform, discovery
from homeassistant.helpers.entity_component import EntityComponent
from homeassistant.helpers.entity import Entity
from homeassistant.components.http import HomeAssistantView
from homeassistant.exceptions import HomeAssistantError
from homeassistant.setup import async_prepare_setup_platform
DEPENDENCIES = ['http']
DOMAIN = 'mailbox'
EVENT = 'mailbox_updated'
CONTENT_TYPE_MPEG = 'audio/mpeg'
SCAN_INTERVAL = timedelta(seconds=30)
_LOGGER = logging.getLogger(__name__)
@asyncio.coroutine
def async_setup(hass, config):
"""Track states and offer events for mailboxes."""
mailboxes = []
yield from hass.components.frontend.async_register_built_in_panel(
'mailbox', 'mailbox', 'mdi:mailbox')
hass.http.register_view(MailboxPlatformsView(mailboxes))
hass.http.register_view(MailboxMessageView(mailboxes))
hass.http.register_view(MailboxMediaView(mailboxes))
hass.http.register_view(MailboxDeleteView(mailboxes))
@asyncio.coroutine
def async_setup_platform(p_type, p_config=None, discovery_info=None):
"""Set up a mailbox platform."""
if p_config is None:
p_config = {}
if discovery_info is None:
discovery_info = {}
platform = yield from async_prepare_setup_platform(
hass, config, DOMAIN, p_type)
if platform is None:
_LOGGER.error("Unknown mailbox platform specified")
return
_LOGGER.info("Setting up %s.%s", DOMAIN, p_type)
mailbox = None
try:
if hasattr(platform, 'async_get_handler'):
mailbox = yield from \
platform.async_get_handler(hass, p_config, discovery_info)
elif hasattr(platform, 'get_handler'):
mailbox = yield from hass.async_add_job(
platform.get_handler, hass, p_config, discovery_info)
else:
raise HomeAssistantError("Invalid mailbox platform.")
if mailbox is None:
_LOGGER.error(
"Failed to initialize mailbox platform %s", p_type)
return
except Exception: # pylint: disable=broad-except
_LOGGER.exception('Error setting up platform %s', p_type)
return
mailboxes.append(mailbox)
mailbox_entity = MailboxEntity(hass, mailbox)
component = EntityComponent(
logging.getLogger(__name__), DOMAIN, hass, SCAN_INTERVAL)
yield from component.async_add_entity(mailbox_entity)
setup_tasks = [async_setup_platform(p_type, p_config) for p_type, p_config
in config_per_platform(config, DOMAIN)]
if setup_tasks:
yield from asyncio.wait(setup_tasks, loop=hass.loop)
@asyncio.coroutine
def async_platform_discovered(platform, info):
"""Handle for discovered platform."""
yield from async_setup_platform(platform, discovery_info=info)
discovery.async_listen_platform(hass, DOMAIN, async_platform_discovered)
return True
class MailboxEntity(Entity):
"""Entity for each mailbox platform."""
def __init__(self, hass, mailbox):
"""Initialize mailbox entity."""
self.mailbox = mailbox
self.hass = hass
self.message_count = 0
@callback
def _mailbox_updated(event):
self.async_schedule_update_ha_state(True)
hass.bus.async_listen(EVENT, _mailbox_updated)
@property
def state(self):
"""Return the state of the binary sensor."""
return str(self.message_count)
@property
def name(self):
"""Return the name of the entity."""
return self.mailbox.name
@asyncio.coroutine
def async_update(self):
"""Retrieve messages from platform."""
messages = yield from self.mailbox.async_get_messages()
self.message_count = len(messages)
class Mailbox(object):
"""Represent an mailbox device."""
def __init__(self, hass, name):
"""Initialize mailbox object."""
self.hass = hass
self.name = name
def async_update(self):
"""Send event notification of updated mailbox."""
self.hass.bus.async_fire(EVENT)
@property
def media_type(self):
"""Return the supported media type."""
raise NotImplementedError()
@asyncio.coroutine
def async_get_media(self, msgid):
"""Return the media blob for the msgid."""
raise NotImplementedError()
@asyncio.coroutine
def async_get_messages(self):
"""Return a list of the current messages."""
raise NotImplementedError()
def async_delete(self, msgid):
"""Delete the specified messages."""
raise NotImplementedError()
class StreamError(Exception):
"""Media streaming exception."""
pass
class MailboxView(HomeAssistantView):
"""Base mailbox view."""
def __init__(self, mailboxes):
"""Initialize a basic mailbox view."""
self.mailboxes = mailboxes
def get_mailbox(self, platform):
"""Retrieve the specified mailbox."""
for mailbox in self.mailboxes:
if mailbox.name == platform:
return mailbox
raise HTTPNotFound
class MailboxPlatformsView(MailboxView):
"""View to return the list of mailbox platforms."""
url = "/api/mailbox/platforms"
name = "api:mailbox:platforms"
@asyncio.coroutine
def get(self, request):
"""Retrieve list of platforms."""
platforms = []
for mailbox in self.mailboxes:
platforms.append(mailbox.name)
return self.json(platforms)
class MailboxMessageView(MailboxView):
"""View to return the list of messages."""
url = "/api/mailbox/messages/{platform}"
name = "api:mailbox:messages"
@asyncio.coroutine
def get(self, request, platform):
"""Retrieve messages."""
mailbox = self.get_mailbox(platform)
messages = yield from mailbox.async_get_messages()
return self.json(messages)
class MailboxDeleteView(MailboxView):
"""View to delete selected messages."""
url = "/api/mailbox/delete/{platform}/{msgid}"
name = "api:mailbox:delete"
@asyncio.coroutine
def delete(self, request, platform, msgid):
"""Delete items."""
mailbox = self.get_mailbox(platform)
mailbox.async_delete(msgid)
class MailboxMediaView(MailboxView):
"""View to return a media file."""
url = r"/api/mailbox/media/{platform}/{msgid}"
name = "api:asteriskmbox:media"
@asyncio.coroutine
def get(self, request, platform, msgid):
"""Retrieve media."""
mailbox = self.get_mailbox(platform)
hass = request.app['hass']
with suppress(asyncio.CancelledError, asyncio.TimeoutError):
with async_timeout.timeout(10, loop=hass.loop):
try:
stream = yield from mailbox.async_get_media(msgid)
except StreamError as err:
error_msg = "Error getting media: %s" % (err)
_LOGGER.error(error_msg)
return web.Response(status=500)
if stream:
return web.Response(body=stream,
content_type=mailbox.media_type)
return web.Response(status=500)