mirror of
https://github.com/nikdoof/homeassistant-prometheus-query.git
synced 2025-12-17 04:29:21 +00:00
Changed folders to make compatible with HACS
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"""The prometheus query component."""
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{
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"domain": "prometheus-query",
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"name": "Prometheus query sensor",
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"documentation": "",
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"dependencies": [],
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"codeowners": ["lfasci"],
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"requirements": ["prometheus_client","requests"]
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}
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import logging, time
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import requests
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import json
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import voluptuous as vol
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import homeassistant.helpers.config_validation as cv
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from datetime import timedelta
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from homeassistant.helpers.config_validation import PLATFORM_SCHEMA
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from homeassistant.helpers.entity import Entity
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from homeassistant.util import Throttle
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from homeassistant.const import (
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CONF_NAME,
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CONF_UNIT_OF_MEASUREMENT,
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STATE_UNKNOWN,
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)
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from prometheus_client import Summary
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DOMAIN = 'prometheus'
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CONF_PROMETHEUS_URL = 'prometheus_url'
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CONF_PROMETHEUS_QUERY = 'prometheus_query'
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SCAN_INTERVAL = timedelta(seconds=600)
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_LOGGER = logging.getLogger(__name__)
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
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vol.Required(CONF_PROMETHEUS_URL): cv.string,
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vol.Required(CONF_PROMETHEUS_QUERY): cv.string,
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vol.Required(CONF_NAME): cv.string,
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vol.Optional(CONF_UNIT_OF_MEASUREMENT): cv.string,
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})
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def setup_platform(hass, config, add_entities, discovery_info=None):
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"""Set up the sensor platform."""
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prom_data = {
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'url': str(config.get(CONF_PROMETHEUS_URL)) + "/api/v1/query",
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'query': str(config.get(CONF_PROMETHEUS_QUERY)),
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'name': str(config.get(CONF_NAME)),
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'unit': str(config.get(CONF_UNIT_OF_MEASUREMENT)),
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}
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add_entities([PrometheusQuery(prom_data)], True)
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class PrometheusQuery(Entity):
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"""Representation of a Sensor."""
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def __init__(self, prom_data):
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"""Initialize the sensor."""
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self._url = prom_data["url"]
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self._query = prom_data["query"]
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self._name = prom_data["name"]
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self._state = None
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self._unit_of_measurement = prom_data["unit"]
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@property
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def name(self):
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"""Return the name of the sensor."""
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return self._name
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@property
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def state(self):
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"""Return the state of the sensor."""
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return self._state
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@property
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def unit_of_measurement(self):
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"""Return the unit of measurement."""
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return self._unit_of_measurement
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def update(self):
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"""Fetch new state data for the sensor.
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This is the only method that should fetch new data for Home Assistant.
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"""
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try:
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response = requests.get(self._url, params={'query': self._query})
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if (response):
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results = response.json()['data']['result']
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self._state = results[0]['value'][1]
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else:
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self._state = STATE_UNKNOWN
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except URLCallError:
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_LOGGER.error("Error when retrieving update data")
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