Source code for juham_shelly.shellyplus1

import json
from typing import Any, cast
from typing_extensions import override
from masterpiece.mqtt import MqttMsg
from .shelly import Shelly


[docs] class ShellyPlus1(Shelly): """Automation class for controlling Shelly Wifi relay. Subscribes to 'power' topic and controls the Shelly relay accordingly. """ power_topic = "power" # Juham topic to listen shelly_relay_command = "/command/switch:0" # Shelly specific relay to control def __init__(self, name: str, unit: str, relay: str) -> None: """Create automation for controlling the given Args: name (str): name of this node unit (str): unit to listen for power input relay (str) : Mqtt prefix of the shelly relay to be controlled """ super().__init__(name) self.relay_topic_out = f"{relay}{self.shelly_relay_command}" self.current_relay_state: int = -1 self.power_topic_in = self.make_topic_name(self.power_topic) self.unit = unit
[docs] @override def on_connect(self, client: object, userdata: Any, flags: int, rc: int) -> None: super().on_connect(client, userdata, flags, rc) if rc == 0: self.subscribe(self.power_topic_in)
[docs] @override def on_message(self, client: object, userdata: Any, msg: MqttMsg) -> None: if msg.topic == self.power_topic_in: self.on_power(json.loads(msg.payload.decode())) else: super().on_message(client, userdata, msg)
[docs] def on_power(self, m: dict[str, str]) -> None: """Process power_topic message. Args: m (dict): holding data from the power sensor """ if "Unit" in m and m["Unit"] == self.unit: new_state = cast(int, m["State"]) if new_state != self.current_relay_state: self.current_relay_state = new_state if new_state == 0: relay = "off" else: relay = "on" self.publish(self.relay_topic_out, relay, 1, False) self.info(f"{self.name} {m['Unit']} state changed to {relay}")