Source code for juham.shelly.shellyplus1_simulator

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

from juham.base import Base, MqttMsg
from juham.shelly.jshelly import JShelly
from juham.web.rcloud import RCloud
from juham.web.rthread import IWorkerThread, RThread


class ShellyPlus1SimulatorThread(IWorkerThread):
    """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

    @override
    def update_interval(self) -> float:
        return self.interval

    @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 ShellyPlus1Simulator(RThread, JShelly): """Simulator for ShellyPlus1 wifi relay. Spawns an asynchronous thread to generate data from temperature sensors. """ workerThreadId: str = ShellyPlus1SimulatorThread.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( ShellyPlus1SimulatorThread, Base.instantiate(ShellyPlus1SimulatorThread.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)