Source code for juham_shelly.shellypro3
import json
from typing import Any, Dict, cast
from typing_extensions import override
from masterpiece.mqtt import MqttMsg
from .shelly import Shelly
[docs]
class ShellyPro3(Shelly):
"""The Shelly Pro wifi/ethernet relay with three independently controllable
relays. Subscribes to the Juham power input topic and controls the Shelly relays accordingly.
"""
power_topic = "power" # Juham topic to listen
def __init__(
self, name: str, unit: str, relay: str, l1: bool, l2: bool, l3: bool
) -> None:
"""Initialize Shelly Pro 3 switch. Listens the Juham power topic and specific unit in it,
and controls the given l1,l2,l3 contactors accordingly.
Args:
name (str): name of the automation object
unit (str): unit name controlling this relay
relay (str): Mqtt prefix of the shelly device to be controlled
l1, l2, l3 (bool): Phase conductors to be turned on/off
"""
super().__init__(name)
self.relay_topic_out = f"{relay}/command/switch:"
self.current_relay_state: int = 0
self.power_topic_in = self.make_topic_name(self.power_topic)
self.unit = unit
self.l1 = l1
self.l2 = l2
self.l3 = l3
[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"
if self.l1 == True:
self.publish(f"{self.relay_topic_out}0", relay, 1, False)
if self.l2 == True:
self.publish(f"{self.relay_topic_out}1", relay, 1, False)
if self.l3 == True:
self.publish(f"{self.relay_topic_out}2", relay, 1, False)
self.info(f"{self.name} {m['Unit']} state changed to {relay}")
[docs]
@override
def to_dict(self) -> Dict[str, Any]:
data: Dict[str, Any] = super().to_dict()
data["_shellypro3"] = {
"power_topic_in": self.power_topic_in,
}
return data
[docs]
@override
def from_dict(self, data: Dict[str, Any]) -> None:
super().from_dict(data)
if "_shellypro3" in data:
for key, value in data["_shellypro3"].items():
setattr(self, key, value)