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Cleanup if discovered mqtt sensor can't be added (#19745)

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* Cleanup if discovered mqtt sensor can't be added

* No bare except

* Clear ALREADY_DISCOVERED list with helper
This commit is contained in:
emontnemery 2019-01-08 16:46:26 +01:00 committed by GitHub
commit f0f386e314
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2 changed files with 45 additions and 5 deletions
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15
homeassistant/components/sensor/mqtt.py
View File

@ -17,7 +17,8 @@ from homeassistant.components.mqtt import (
ATTR_DISCOVERY_HASH, CONF_AVAILABILITY_TOPIC, CONF_PAYLOAD_AVAILABLE,
CONF_PAYLOAD_NOT_AVAILABLE, CONF_QOS, CONF_STATE_TOPIC, MqttAttributes,
MqttAvailability, MqttDiscoveryUpdate, MqttEntityDeviceInfo, subscription)
from homeassistant.components.mqtt.discovery import MQTT_DISCOVERY_NEW
from homeassistant.components.mqtt.discovery import (
MQTT_DISCOVERY_NEW, clear_discovery_hash)
from homeassistant.components.sensor import DEVICE_CLASSES_SCHEMA
from homeassistant.const import (
CONF_FORCE_UPDATE, CONF_NAME, CONF_VALUE_TEMPLATE, STATE_UNKNOWN,
@ -66,9 +67,15 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
"""Set up MQTT sensors dynamically through MQTT discovery."""
async def async_discover_sensor(discovery_payload):
"""Discover and add a discovered MQTT sensor."""
config = PLATFORM_SCHEMA(discovery_payload)
await _async_setup_entity(config, async_add_entities,
discovery_payload[ATTR_DISCOVERY_HASH])
try:
discovery_hash = discovery_payload[ATTR_DISCOVERY_HASH]
config = PLATFORM_SCHEMA(discovery_payload)
await _async_setup_entity(config, async_add_entities,
discovery_hash)
except Exception:
if discovery_hash:
clear_discovery_hash(hass, discovery_hash)
raise
async_dispatcher_connect(hass,
MQTT_DISCOVERY_NEW.format(sensor.DOMAIN, 'mqtt'),

35
tests/components/sensor/test_mqtt.py
View File

@ -474,7 +474,7 @@ async def test_discovery_removal_sensor(hass, mqtt_mock, caplog):
async def test_discovery_update_sensor(hass, mqtt_mock, caplog):
"""Test removal of discovered sensor."""
"""Test update of discovered sensor."""
entry = MockConfigEntry(domain=mqtt.DOMAIN)
await async_start(hass, 'homeassistant', {}, entry)
data1 = (
@ -506,6 +506,39 @@ async def test_discovery_update_sensor(hass, mqtt_mock, caplog):
assert state is None
async def test_discovery_broken(hass, mqtt_mock, caplog):
"""Test handling of bad discovery message."""
entry = MockConfigEntry(domain=mqtt.DOMAIN)
await async_start(hass, 'homeassistant', {}, entry)
data1 = (
'{ "name": "Beer",'
' "state_topic": "test_topic#" }'
)
data2 = (
'{ "name": "Milk",'
' "state_topic": "test_topic" }'
)
async_fire_mqtt_message(hass, 'homeassistant/sensor/bla/config',
data1)
await hass.async_block_till_done()
state = hass.states.get('sensor.beer')
assert state is None
async_fire_mqtt_message(hass, 'homeassistant/sensor/bla/config',
data2)
await hass.async_block_till_done()
await hass.async_block_till_done()
state = hass.states.get('sensor.milk')
assert state is not None
assert state.name == 'Milk'
state = hass.states.get('sensor.beer')
assert state is None
async def test_entity_device_info_with_identifier(hass, mqtt_mock):
"""Test MQTT sensor device registry integration."""
entry = MockConfigEntry(domain=mqtt.DOMAIN)