python-kasa/kasa/smart/modules/energy.py

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"""Implementation of energy monitoring module."""
from __future__ import annotations
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from typing import NoReturn
from ...emeterstatus import EmeterStatus
from ...exceptions import KasaException
from ...interfaces.energy import Energy as EnergyInterface
from ..smartmodule import SmartModule, raise_if_update_error
class Energy(SmartModule, EnergyInterface):
"""Implementation of energy monitoring module."""
REQUIRED_COMPONENT = "energy_monitoring"
async def _post_update_hook(self) -> None:
if "voltage_mv" in self.data.get("get_emeter_data", {}):
self._supported = (
self._supported | EnergyInterface.ModuleFeature.VOLTAGE_CURRENT
)
def query(self) -> dict:
"""Query to execute during the update cycle."""
req = {
"get_energy_usage": None,
}
if self.supported_version > 1:
req["get_current_power"] = None
req["get_emeter_data"] = None
req["get_emeter_vgain_igain"] = None
return req
@property
@raise_if_update_error
def current_consumption(self) -> float | None:
"""Current power in watts."""
if (power := self.energy.get("current_power")) is not None or (
power := self.data.get("get_emeter_data", {}).get("power_mw")
) is not None:
return power / 1_000
# Fallback if get_energy_usage does not provide current_power,
# which can happen on some newer devices (e.g. P304M).
elif (
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power := self.data.get("get_current_power", {}).get("current_power")
) is not None:
return power
return None
@property
@raise_if_update_error
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def energy(self) -> dict:
"""Return get_energy_usage results."""
if en := self.data.get("get_energy_usage"):
return en
return self.data
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def _get_status_from_energy(self, energy: dict) -> EmeterStatus:
return EmeterStatus(
{
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"power_mw": energy.get("current_power", 0),
"total": energy.get("today_energy", 0) / 1_000,
}
)
@property
@raise_if_update_error
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def status(self) -> EmeterStatus:
"""Get the emeter status."""
if "get_emeter_data" in self.data:
return EmeterStatus(self.data["get_emeter_data"])
else:
return self._get_status_from_energy(self.energy)
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async def get_status(self) -> EmeterStatus:
"""Return real-time statistics."""
if "get_emeter_data" in self.data:
res = await self.call("get_emeter_data")
return EmeterStatus(res["get_emeter_data"])
else:
res = await self.call("get_energy_usage")
return self._get_status_from_energy(res["get_energy_usage"])
@property
@raise_if_update_error
def consumption_this_month(self) -> float | None:
"""Get the emeter value for this month in kWh."""
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return self.energy.get("month_energy", 0) / 1_000
@property
@raise_if_update_error
def consumption_today(self) -> float | None:
"""Get the emeter value for today in kWh."""
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return self.energy.get("today_energy", 0) / 1_000
@property
@raise_if_update_error
def consumption_total(self) -> float | None:
"""Return total consumption since last reboot in kWh."""
return None
@property
@raise_if_update_error
def current(self) -> float | None:
"""Return the current in A."""
ma = self.data.get("get_emeter_data", {}).get("current_ma")
return ma / 1000 if ma else None
@property
@raise_if_update_error
def voltage(self) -> float | None:
"""Get the current voltage in V."""
mv = self.data.get("get_emeter_data", {}).get("voltage_mv")
return mv / 1000 if mv else None
async def _deprecated_get_realtime(self) -> EmeterStatus:
"""Retrieve current energy readings."""
return self.status
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async def erase_stats(self) -> NoReturn:
"""Erase all stats."""
raise KasaException("Device does not support periodic statistics")
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async def get_daily_stats(
self, *, year: int | None = None, month: int | None = None, kwh: bool = True
) -> dict:
"""Return daily stats for the given year & month.
The return value is a dictionary of {day: energy, ...}.
"""
raise KasaException("Device does not support periodic statistics")
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async def get_monthly_stats(
self, *, year: int | None = None, kwh: bool = True
) -> dict:
"""Return monthly stats for the given year."""
raise KasaException("Device does not support periodic statistics")
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async def _check_supported(self) -> bool:
"""Additional check to see if the module is supported by the device."""
# Energy module is not supported on P304M parent device
return "device_on" in self._device.sys_info