Putting the DB on a Diet and then watching it for growth with a sensor!

custom_components/sensor/database.py

@@ -0,0 +1,69 @@
+"""
+Sensor for checking the size of your HA database file. 
+
+For more details about this platform, please refer to the documentation at
+https://home-assistant.io/components/sensor.database
+"""
+import logging
+import os
+
+from homeassistant.helpers.entity import Entity
+
+_LOGGER = logging.getLogger(__name__)
+
+PATH = "/Users/hass/.homeassistant/home-assistant_v2.db"
+
+
+def setup_platform(hass, config, add_devices, discovery_info=None):
+    """Set up the database sensor."""
+    db = Database(PATH)
+    add_devices([db], True)
+
+
+class Database(Entity):
+    """Representation of the HA database."""
+    ICON = 'mdi:harddisk'
+
+    def __init__(self, path):
+        """Initialize the data object."""
+        self._path = path   # Need to check its a valid path
+        self._size = None
+        self._name = "Database_sensor"
+        self._attributes = {}
+        self._unit_of_measurement = 'MB'
+        self.update()
+
+    def update(self):
+        """Get the size of the database."""
+        self._size = self.get_db_size(self._path)
+
+    def get_db_size(self, path):
+        statinfo = os.stat(path)
+        decimals = 2
+        db_size = round(statinfo.st_size/1e6, decimals)
+        return db_size
+
+    @property
+    def name(self):
+        """Return the name of the sensor."""
+        return self._name
+
+    @property
+    def state(self):
+        """Return the state of the sensor."""
+        return self._size
+
+    @property
+    def icon(self):
+        """Icon to use in the frontend, if any."""
+        return self.ICON
+
+    @property
+    def device_state_attributes(self):
+        """Attributes."""
+        return self._attributes
+
+    @property
+    def unit_of_measurement(self):
+        """Return the unit of measurement of this entity, if any."""
+        return self._unit_of_measurement

recorder.yaml

@@ -8,21 +8,56 @@ exclude:
   domains:
     - updater
     - automation
+    - device_tracker
+    - group
+    - scene
+    - script
   entities:
-    - group.motion
-    - group.doors
+    - binary_sensor.bedroom_motion
+    - binary_sensor.clock_motion
+    - sensor.bitcoin
+    - sensor.carlo_6s_battery_state
+    - sensor.clock_am_pm
+    - sensor.clock_date
+    - sensor.clock_day
+    - sensor.clock_stacey_alarm_time
+    - sensor.clock_time
+    - sensor.dark_sky_cloud_coverage
+    - sensor.dark_sky_daily_max_precip_intensity
+    - sensor.dark_sky_humidity
+    - sensor.dark_sky_minutely_summary
+    - sensor.dark_sky_precip_intensity
+    - sensor.dark_sky_temperature
+    - sensor.dark_sky_uv_index
+    - sensor.dark_sky_wind_speed
+    - sensor.date
+    - sensor.epson_ink_level_black
+    - sensor.epson_ink_level_cyan
+    - sensor.epson_ink_level_magenta
+    - sensor.epson_ink_level_photo_black
+    - sensor.epson_ink_level_yellow
+    - sensor.external_ip
     - sensor.floorplan_date
     - sensor.floorplan_time
     - sensor.ha_uptime
+    - sensor.large_garage_reflection_rate
+    - sensor.large_garage_time_in_state
+    - sensor.large_garage_wifi_signal_strength
+    - sensor.last_message
+    - sensor.low_battery
+    - sensor.network
+    - sensor.network_detail
+    - sensor.pihole_ads_blocked_today
+    - sensor.pihole_ads_percentage_blocked_today
+    - sensor.pihole_dns_queries_today
+    - sensor.pihole_dns_unique_clients
+    - sensor.since_last_boot
+    - sensor.since_last_boot_templated
+    - sensor.small_garage_reflection_rate
+    - sensor.small_garage_time_in_state
+    - sensor.small_garage_wifi_signal_strength
+    - sensor.staceys_iphone_battery_level
+    - sensor.tesla
     - sensor.time
-    - sensor.weather_apparent_temperature
-    - sensor.weather_humidity
-    - sensor.weather_icon
-    - sensor.weather_precip_intensity
-    - sensor.weather_precip_probability
-    - sensor.weather_summary
-    - sensor.weather_temperature
-    - sensor.weather_hourly_summary
-    - sensor.weather_daily_summary
-    - sensor.weather_wind_speed
     - sun.sun
+    - zone.home