Source code for juham.ts.power_record

import json
from typing import Any
from typing_extensions import override
from influxdb_client_3 import Point

from juham.base import Base, MqttMsg
from juham.base.time import epoc2utc


[docs] class PowerRecord(Base): """Power utilization record. This class listens the power utilization message and writes the state to time series database. """ def __init__(self, name: str = "powerrecord") -> None: """Construct power record object with the given name.""" super().__init__(name) self.topic_name = self.make_topic_name("power")
[docs] @override def on_connect(self, client: object, userdata: Any, flags: int, rc: int) -> None: super().on_connect(client, userdata, flags, rc) self.subscribe(self.topic_name) self.debug(f"Subscribed to {self.topic_name}")
[docs] @override def on_message(self, client: object, userdata: Any, msg: MqttMsg) -> None: """Standard mqtt message notification method. This method is called upon new arrived message. """ m = json.loads(msg.payload.decode()) if not "Unit" in m: return unit = m["Unit"] ts = m["Timestamp"] state = m["State"] point = ( Point("power").tag("unit", unit).field("state", state).time(epoc2utc(ts)) ) self.write(point)