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NSW Rural Fire Service platform (#16802)

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* initial integration with nsw rural fire service feed

* improved test coverage

* updated requirements

* grouped imports

* removed debug print statement

* moved manager's startup code into separate call

* simplified feed update code

* simplified feed update code

* simplified device state attribute code

* added source to conform with pr #17339

* fixed lint

* refactored how entities are managed

* fixed pylint

* simplified signalling
This commit is contained in:
Malte Franken 2018-10-14 23:11:26 +11:00 committed by Martin Hjelmare
parent f198859441
commit fccaf7f919
4 changed files with 461 additions and 0 deletions
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284
homeassistant/components/geo_location/nsw_rural_fire_service_feed.py Normal file
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"""
NSW Rural Fire Service Feed platform.
Retrieves current events (bush fires, grass fires, etc.) in GeoJSON format,
and displays information on events filtered by distance and category to the
HA instance's location.
For more details about this platform, please refer to the documentation at
https://home-assistant.io/components/geo_location/nsw_rural_fire_service_feed/
"""
import logging
from datetime import timedelta
from typing import Optional
import voluptuous as vol
import homeassistant.helpers.config_validation as cv
from homeassistant.components.geo_location import GeoLocationEvent, \
PLATFORM_SCHEMA
from homeassistant.const import CONF_RADIUS, CONF_SCAN_INTERVAL, \
EVENT_HOMEASSISTANT_START, ATTR_ATTRIBUTION
from homeassistant.core import callback
from homeassistant.helpers.dispatcher import dispatcher_send, \
async_dispatcher_connect
from homeassistant.helpers.event import track_time_interval
REQUIREMENTS = ['geojson_client==0.1']
_LOGGER = logging.getLogger(__name__)
ATTR_CATEGORY = 'category'
ATTR_COUNCIL_AREA = 'council_area'
ATTR_EXTERNAL_ID = 'external_id'
ATTR_FIRE = 'fire'
ATTR_LOCATION = 'location'
ATTR_PUBLICATION_DATE = 'publication_date'
ATTR_RESPONSIBLE_AGENCY = 'responsible_agency'
ATTR_SIZE = 'size'
ATTR_STATUS = 'status'
ATTR_TYPE = 'type'
CONF_CATEGORIES = 'categories'
DEFAULT_RADIUS_IN_KM = 20.0
DEFAULT_UNIT_OF_MEASUREMENT = "km"
SCAN_INTERVAL = timedelta(minutes=5)
SIGNAL_DELETE_ENTITY = 'nsw_rural_fire_service_feed_delete_{}'
SIGNAL_UPDATE_ENTITY = 'nsw_rural_fire_service_feed_update_{}'
SOURCE = 'nsw_rural_fire_service_feed'
VALID_CATEGORIES = ['Emergency Warning', 'Watch and Act', 'Advice',
'Not Applicable']
PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
vol.Optional(CONF_RADIUS, default=DEFAULT_RADIUS_IN_KM):
vol.Coerce(float),
vol.Optional(CONF_CATEGORIES, default=[]):
vol.All(cv.ensure_list, [vol.In(VALID_CATEGORIES)])
})
def setup_platform(hass, config, add_entities, discovery_info=None):
"""Set up the GeoJSON Events platform."""
scan_interval = config.get(CONF_SCAN_INTERVAL, SCAN_INTERVAL)
radius_in_km = config[CONF_RADIUS]
categories = config.get(CONF_CATEGORIES)
# Initialize the entity manager.
feed = NswRuralFireServiceFeedManager(hass, add_entities, scan_interval,
radius_in_km, categories)
def start_feed_manager(event):
"""Start feed manager."""
feed.startup()
hass.bus.listen_once(EVENT_HOMEASSISTANT_START, start_feed_manager)
class NswRuralFireServiceFeedManager:
"""Feed Manager for NSW Rural Fire Service GeoJSON feed."""
def __init__(self, hass, add_entities, scan_interval, radius_in_km,
categories):
"""Initialize the GeoJSON Feed Manager."""
from geojson_client.nsw_rural_fire_service_feed \
import NswRuralFireServiceFeed
self._hass = hass
self._feed = NswRuralFireServiceFeed((hass.config.latitude,
hass.config.longitude),
filter_radius=radius_in_km,
filter_categories=categories)
self._add_entities = add_entities
self._scan_interval = scan_interval
self.feed_entries = {}
self._managed_external_ids = set()
def startup(self):
"""Start up this manager."""
self._update()
self._init_regular_updates()
def _init_regular_updates(self):
"""Schedule regular updates at the specified interval."""
track_time_interval(self._hass, lambda now: self._update(),
self._scan_interval)
def _update(self):
"""Update the feed and then update connected entities."""
import geojson_client
status, feed_entries = self._feed.update()
if status == geojson_client.UPDATE_OK:
_LOGGER.debug("Data retrieved %s", feed_entries)
# Keep a copy of all feed entries for future lookups by entities.
self.feed_entries = {entry.external_id: entry
for entry in feed_entries}
# For entity management the external ids from the feed are used.
feed_external_ids = set(self.feed_entries)
remove_external_ids = self._managed_external_ids.difference(
feed_external_ids)
self._remove_entities(remove_external_ids)
update_external_ids = self._managed_external_ids.intersection(
feed_external_ids)
self._update_entities(update_external_ids)
create_external_ids = feed_external_ids.difference(
self._managed_external_ids)
self._generate_new_entities(create_external_ids)
elif status == geojson_client.UPDATE_OK_NO_DATA:
_LOGGER.debug("Update successful, but no data received from %s",
self._feed)
else:
_LOGGER.warning("Update not successful, no data received from %s",
self._feed)
# Remove all entities.
self._remove_entities(self._managed_external_ids.copy())
def _generate_new_entities(self, external_ids):
"""Generate new entities for events."""
new_entities = []
for external_id in external_ids:
new_entity = NswRuralFireServiceLocationEvent(self, external_id)
_LOGGER.debug("New entity added %s", external_id)
new_entities.append(new_entity)
self._managed_external_ids.add(external_id)
# Add new entities to HA.
self._add_entities(new_entities, True)
def _update_entities(self, external_ids):
"""Update entities."""
for external_id in external_ids:
_LOGGER.debug("Existing entity found %s", external_id)
dispatcher_send(self._hass,
SIGNAL_UPDATE_ENTITY.format(external_id))
def _remove_entities(self, external_ids):
"""Remove entities."""
for external_id in external_ids:
_LOGGER.debug("Entity not current anymore %s", external_id)
self._managed_external_ids.remove(external_id)
dispatcher_send(self._hass,
SIGNAL_DELETE_ENTITY.format(external_id))
class NswRuralFireServiceLocationEvent(GeoLocationEvent):
"""This represents an external event with GeoJSON data."""
def __init__(self, feed_manager, external_id):
"""Initialize entity with data from feed entry."""
self._feed_manager = feed_manager
self._external_id = external_id
self._name = None
self._distance = None
self._latitude = None
self._longitude = None
self._attribution = None
self._category = None
self._publication_date = None
self._location = None
self._council_area = None
self._status = None
self._type = None
self._fire = None
self._size = None
self._responsible_agency = None
async def async_added_to_hass(self):
"""Call when entity is added to hass."""
async_dispatcher_connect(
self.hass, SIGNAL_DELETE_ENTITY.format(self._external_id),
self._delete_callback)
async_dispatcher_connect(
self.hass, SIGNAL_UPDATE_ENTITY.format(self._external_id),
self._update_callback)
@callback
def _delete_callback(self):
"""Remove this entity."""
self.hass.async_create_task(self.async_remove())
@callback
def _update_callback(self):
"""Call update method."""
self.async_schedule_update_ha_state(True)
@property
def should_poll(self):
"""No polling needed for GeoJSON location events."""
return False
async def async_update(self):
"""Update this entity from the data held in the feed manager."""
_LOGGER.debug("Updating %s", self._external_id)
feed_entry = self._feed_manager.feed_entries.get(self._external_id)
if feed_entry:
self._update_from_feed(feed_entry)
def _update_from_feed(self, feed_entry):
"""Update the internal state from the provided feed entry."""
self._name = feed_entry.title
self._distance = feed_entry.distance_to_home
self._latitude = feed_entry.coordinates[0]
self._longitude = feed_entry.coordinates[1]
self._attribution = feed_entry.attribution
self._category = feed_entry.category
self._publication_date = feed_entry.publication_date
self._location = feed_entry.location
self._council_area = feed_entry.council_area
self._status = feed_entry.status
self._type = feed_entry.type
self._fire = feed_entry.fire
self._size = feed_entry.size
self._responsible_agency = feed_entry.responsible_agency
@property
def source(self) -> str:
"""Return source value of this external event."""
return SOURCE
@property
def name(self) -> Optional[str]:
"""Return the name of the entity."""
return self._name
@property
def distance(self) -> Optional[float]:
"""Return distance value of this external event."""
return self._distance
@property
def latitude(self) -> Optional[float]:
"""Return latitude value of this external event."""
return self._latitude
@property
def longitude(self) -> Optional[float]:
"""Return longitude value of this external event."""
return self._longitude
@property
def unit_of_measurement(self):
"""Return the unit of measurement."""
return DEFAULT_UNIT_OF_MEASUREMENT
@property
def device_state_attributes(self):
"""Return the device state attributes."""
attributes = {}
for key, value in (
(ATTR_EXTERNAL_ID, self._external_id),
(ATTR_CATEGORY, self._category),
(ATTR_LOCATION, self._location),
(ATTR_ATTRIBUTION, self._attribution),
(ATTR_PUBLICATION_DATE, self._publication_date),
(ATTR_COUNCIL_AREA, self._council_area),
(ATTR_STATUS, self._status),
(ATTR_TYPE, self._type),
(ATTR_FIRE, self._fire),
(ATTR_SIZE, self._size),
(ATTR_RESPONSIBLE_AGENCY, self._responsible_agency),
):
if value or isinstance(value, bool):
attributes[key] = value
return attributes

1
requirements_all.txt
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@ -399,6 +399,7 @@ gearbest_parser==1.0.7
geizhals==0.0.7
# homeassistant.components.geo_location.geo_json_events
# homeassistant.components.geo_location.nsw_rural_fire_service_feed
geojson_client==0.1
# homeassistant.components.sensor.geo_rss_events

1
requirements_test_all.txt
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@ -72,6 +72,7 @@ foobot_async==0.3.1
gTTS-token==1.1.2
# homeassistant.components.geo_location.geo_json_events
# homeassistant.components.geo_location.nsw_rural_fire_service_feed
geojson_client==0.1
# homeassistant.components.sensor.geo_rss_events

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tests/components/geo_location/test_nsw_rural_fire_service_feed.py Normal file
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"""The tests for the geojson platform."""
import datetime
import unittest
from unittest import mock
from unittest.mock import patch, MagicMock
from homeassistant.components import geo_location
from homeassistant.components.geo_location import ATTR_SOURCE
from homeassistant.components.geo_location.nsw_rural_fire_service_feed import \
ATTR_EXTERNAL_ID, SCAN_INTERVAL, ATTR_CATEGORY, ATTR_FIRE, ATTR_LOCATION, \
ATTR_COUNCIL_AREA, ATTR_STATUS, ATTR_TYPE, ATTR_SIZE, \
ATTR_RESPONSIBLE_AGENCY, ATTR_PUBLICATION_DATE
from homeassistant.const import CONF_URL, EVENT_HOMEASSISTANT_START, \
CONF_RADIUS, ATTR_LATITUDE, ATTR_LONGITUDE, ATTR_FRIENDLY_NAME, \
ATTR_UNIT_OF_MEASUREMENT, ATTR_ATTRIBUTION
from homeassistant.setup import setup_component
from tests.common import get_test_home_assistant, assert_setup_component, \
fire_time_changed
import homeassistant.util.dt as dt_util
URL = 'http://geo.json.local/geo_json_events.json'
CONFIG = {
geo_location.DOMAIN: [
{
'platform': 'nsw_rural_fire_service_feed',
CONF_URL: URL,
CONF_RADIUS: 200
}
]
}
class TestGeoJsonPlatform(unittest.TestCase):
"""Test the geojson platform."""
def setUp(self):
"""Initialize values for this testcase class."""
self.hass = get_test_home_assistant()
def tearDown(self):
"""Stop everything that was started."""
self.hass.stop()
@staticmethod
def _generate_mock_feed_entry(external_id, title, distance_to_home,
coordinates, category=None, location=None,
attribution=None, publication_date=None,
council_area=None, status=None,
entry_type=None, fire=True, size=None,
responsible_agency=None):
"""Construct a mock feed entry for testing purposes."""
feed_entry = MagicMock()
feed_entry.external_id = external_id
feed_entry.title = title
feed_entry.distance_to_home = distance_to_home
feed_entry.coordinates = coordinates
feed_entry.category = category
feed_entry.location = location
feed_entry.attribution = attribution
feed_entry.publication_date = publication_date
feed_entry.council_area = council_area
feed_entry.status = status
feed_entry.type = entry_type
feed_entry.fire = fire
feed_entry.size = size
feed_entry.responsible_agency = responsible_agency
return feed_entry
@mock.patch('geojson_client.nsw_rural_fire_service_feed.'
'NswRuralFireServiceFeed')
def test_setup(self, mock_feed):
"""Test the general setup of the platform."""
# Set up some mock feed entries for this test.
mock_entry_1 = self._generate_mock_feed_entry(
'1234', 'Title 1', 15.5, (-31.0, 150.0), category='Category 1',
location='Location 1', attribution='Attribution 1',
publication_date=datetime.datetime(2018, 9, 22, 8, 0,
tzinfo=datetime.timezone.utc),
council_area='Council Area 1', status='Status 1',
entry_type='Type 1', size='Size 1', responsible_agency='Agency 1')
mock_entry_2 = self._generate_mock_feed_entry('2345', 'Title 2', 20.5,
(-31.1, 150.1),
fire=False)
mock_entry_3 = self._generate_mock_feed_entry('3456', 'Title 3', 25.5,
(-31.2, 150.2))
mock_entry_4 = self._generate_mock_feed_entry('4567', 'Title 4', 12.5,
(-31.3, 150.3))
mock_feed.return_value.update.return_value = 'OK', [mock_entry_1,
mock_entry_2,
mock_entry_3]
utcnow = dt_util.utcnow()
# Patching 'utcnow' to gain more control over the timed update.
with patch('homeassistant.util.dt.utcnow', return_value=utcnow):
with assert_setup_component(1, geo_location.DOMAIN):
self.assertTrue(setup_component(self.hass, geo_location.DOMAIN,
CONFIG))
# Artificially trigger update.
self.hass.bus.fire(EVENT_HOMEASSISTANT_START)
# Collect events.
self.hass.block_till_done()
all_states = self.hass.states.all()
assert len(all_states) == 3
state = self.hass.states.get("geo_location.title_1")
self.assertIsNotNone(state)
assert state.name == "Title 1"
assert state.attributes == {
ATTR_EXTERNAL_ID: "1234", ATTR_LATITUDE: -31.0,
ATTR_LONGITUDE: 150.0, ATTR_FRIENDLY_NAME: "Title 1",
ATTR_CATEGORY: "Category 1", ATTR_LOCATION: "Location 1",
ATTR_ATTRIBUTION: "Attribution 1",
ATTR_PUBLICATION_DATE:
datetime.datetime(2018, 9, 22, 8, 0,
tzinfo=datetime.timezone.utc),
ATTR_FIRE: True,
ATTR_COUNCIL_AREA: 'Council Area 1',
ATTR_STATUS: 'Status 1', ATTR_TYPE: 'Type 1',
ATTR_SIZE: 'Size 1', ATTR_RESPONSIBLE_AGENCY: 'Agency 1',
ATTR_UNIT_OF_MEASUREMENT: "km",
ATTR_SOURCE: 'nsw_rural_fire_service_feed'}
self.assertAlmostEqual(float(state.state), 15.5)
state = self.hass.states.get("geo_location.title_2")
self.assertIsNotNone(state)
assert state.name == "Title 2"
assert state.attributes == {
ATTR_EXTERNAL_ID: "2345", ATTR_LATITUDE: -31.1,
ATTR_LONGITUDE: 150.1, ATTR_FRIENDLY_NAME: "Title 2",
ATTR_FIRE: False,
ATTR_UNIT_OF_MEASUREMENT: "km",
ATTR_SOURCE: 'nsw_rural_fire_service_feed'}
self.assertAlmostEqual(float(state.state), 20.5)
state = self.hass.states.get("geo_location.title_3")
self.assertIsNotNone(state)
assert state.name == "Title 3"
assert state.attributes == {
ATTR_EXTERNAL_ID: "3456", ATTR_LATITUDE: -31.2,
ATTR_LONGITUDE: 150.2, ATTR_FRIENDLY_NAME: "Title 3",
ATTR_FIRE: True,
ATTR_UNIT_OF_MEASUREMENT: "km",
ATTR_SOURCE: 'nsw_rural_fire_service_feed'}
self.assertAlmostEqual(float(state.state), 25.5)
# Simulate an update - one existing, one new entry,
# one outdated entry
mock_feed.return_value.update.return_value = 'OK', [
mock_entry_1, mock_entry_4, mock_entry_3]
fire_time_changed(self.hass, utcnow + SCAN_INTERVAL)
self.hass.block_till_done()
all_states = self.hass.states.all()
assert len(all_states) == 3
# Simulate an update - empty data, but successful update,
# so no changes to entities.
mock_feed.return_value.update.return_value = 'OK_NO_DATA', None
# mock_restdata.return_value.data = None
fire_time_changed(self.hass, utcnow +
2 * SCAN_INTERVAL)
self.hass.block_till_done()
all_states = self.hass.states.all()
assert len(all_states) == 3
# Simulate an update - empty data, removes all entities
mock_feed.return_value.update.return_value = 'ERROR', None
fire_time_changed(self.hass, utcnow +
2 * SCAN_INTERVAL)
self.hass.block_till_done()
all_states = self.hass.states.all()
assert len(all_states) == 0