Source code for juham_shelly.shellyplusaddon_simulator

import json
from datetime import datetime, timezone
from typing import Any, Dict, cast
from typing_extensions import override

from masterpiece.mqtt import MqttMsg
from juham_core import Juham, MasterPieceThread, JuhamThread
from .shelly import Shelly


[docs] class ShellyPlusAddOnSimulatorThread(MasterPieceThread): """Thread simulating Shelly Plus 1 wifi relay with four temperature sensors.""" def __init__(self, topic: str = "", interval: float = 60) -> None: """Construct thread for simulating data from Shelly1Plus sensors. Args: topic (str, optional): MQTT topic to post the sensor readings. Defaults to None. interval (float, optional): Interval specifying how often the sensor is read. Defaults to 60 seconds. """ super().__init__(None) self.sensor_topic = topic self.interval: float = interval self.temp: float = 55
[docs] @override def update_interval(self) -> float: return self.interval
[docs] @override def update(self) -> bool: super().update() ts = datetime.now(timezone.utc).timestamp() self.temp = self.temp + 0.1 if self.temp > 70: self.temp = 50 data = { "method": "NotifyStatus", "params": { "ts": ts, "temperature:100": { "tC": self.temp, # Temperature in Celsius for sensor1 }, "temperature:101": { "tC": self.temp * 0.9, # Temperature in Celsius for sensor2 }, "temperature:102": { "tC": self.temp * 0.8, # Temperature in Celsius for sensor2 }, "temperature:103": { "tC": self.temp * 0.7, # Temperature in Celsius for sensor2 }, }, } msg = json.dumps(data) self.publish(self.sensor_topic, msg) return True
[docs] class ShellyPlusAddOnSimulator(JuhamThread, Shelly): """Simulator for ShellyPlus1 wifi relay. Spawns an asynchronous thread to generate data from temperature sensors. """ workerThreadId: str = ShellyPlusAddOnSimulatorThread.get_class_id() shelly_topic: str = "/events/rpc" update_interval: float = 60 def __init__( self, name: str = "shellyplus1-simulator", topic: str = "", interval: float = 60.0, mqtt_prefix: str = "shellyplus1-a0a3b3c309c4", ) -> None: """Create Shelly Plus 1 Simulator. Args: name (str, optional): name of the object. Defaults to 'rhomewizardwatermeter'. topic (str, optional): shelly device specific topic. Defaults to None. interval (float, optional): _description_. Defaults to None. shelly_mqtt_prefix (str, optional): MQTT topic prefix to which to publish shelly events """ super().__init__(name) self.mqtt_prefix = mqtt_prefix self.active_liter_lpm = -1 self.update_ts = None if topic is not None: self.topic = topic if interval is not None: self.interval = interval self.sensor_topic = self.mqtt_prefix + self.shelly_topic
[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.mqtt_prefix + self.shelly_topic)
[docs] @override def on_message(self, client: object, userdata: Any, msg: MqttMsg) -> None: if msg.topic == self.sensor_topic: em = json.loads(msg.payload.decode()) self.on_sensor(em) else: super().on_message(client, userdata, msg)
[docs] def on_sensor(self, em: dict[str, Any]) -> None: """Handle data coming from the the Shelly sensors. Simply log the event to indicate the presense of simulated device. Args: em (dict): data from the sensor """ pass
[docs] @override def run(self) -> None: self.worker = cast( ShellyPlusAddOnSimulatorThread, Juham.instantiate(ShellyPlusAddOnSimulatorThread.get_class_id()), ) self.worker.sensor_topic = self.sensor_topic self.worker.interval = self.update_interval super().run()
[docs] @override def to_dict(self) -> Dict[str, Any]: data: Dict[str, Any] = super().to_dict() data["_shellyplus1simulator"] = { "shelly_topic": self.shelly_topic, } return data
[docs] @override def from_dict(self, data: Dict[str, Any]) -> None: super().from_dict(data) if "_shellyplus1simulator" in data: for key, value in data["_shellyplus1simulator"].items(): setattr(self, key, value)