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Ignore STATE_UNKNOWN in prometheus (#47840)

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Giving a value of 0 by default can lead to erroneous
data being exported. For example, if a MQTT temperature
sensor is in `STATE_UNKNOWN` (which can happen after a
HASS restart), a temperature of 0°C will be exported.
Some user might prefer no value rather than a wrong one.
This commit is contained in:
Antoine Meillet 2021-03-16 16:11:51 +01:00 committed by GitHub
parent 673ebe2911
commit 4dc0cdbb5f
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 6 additions and 3 deletions
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9
homeassistant/components/prometheus/__init__.py
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@ -29,6 +29,7 @@ from homeassistant.const import (
PERCENTAGE,
STATE_ON,
STATE_UNAVAILABLE,
STATE_UNKNOWN,
TEMP_CELSIUS,
TEMP_FAHRENHEIT,
)
@ -154,9 +155,11 @@ class PrometheusMetrics:
if not self._filter(state.entity_id):
return
ignored_states = (STATE_UNAVAILABLE, STATE_UNKNOWN)
handler = f"_handle_{domain}"
if hasattr(self, handler) and state.state != STATE_UNAVAILABLE:
if hasattr(self, handler) and state.state not in ignored_states:
getattr(self, handler)(state)
labels = self._labels(state)
@ -168,9 +171,9 @@ class PrometheusMetrics:
entity_available = self._metric(
"entity_available",
self.prometheus_cli.Gauge,
"Entity is available (not in the unavailable state)",
"Entity is available (not in the unavailable or unknown state)",
)
entity_available.labels(**labels).set(float(state.state != STATE_UNAVAILABLE))
entity_available.labels(**labels).set(float(state.state not in ignored_states))
last_updated_time_seconds = self._metric(
"last_updated_time_seconds",