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import paho.mqtt.client as mqtt
import re
import datetime
from .mqtt import MQTTBase
from typing import Optional, Union
from .payload.relay import (
InitialStatPayload,
StatPayload,
PowerPayload,
OTAPayload,
OTAResultPayload
)
class MQTTRelayDevice:
id: str
secret: Optional[str]
def __init__(self, id: str, secret: Optional[str] = None):
self.id = id
self.secret = secret
class MQTTRelay(MQTTBase):
_devices: list[MQTTRelayDevice]
_message_callback: Optional[callable]
_ota_publish_callback: Optional[callable]
def __init__(self,
devices: Union[MQTTRelayDevice, list[MQTTRelayDevice]],
subscribe_to_updates=True):
super().__init__(clean_session=True)
if not isinstance(devices, list):
devices = [devices]
self._devices = devices
self._message_callback = None
self._ota_publish_callback = None
self._subscribe_to_updates = subscribe_to_updates
self._ota_mid = None
def on_connect(self, client: mqtt.Client, userdata, flags, rc):
super().on_connect(client, userdata, flags, rc)
if self._subscribe_to_updates:
for device in self._devices:
topic = f'hk/{device.id}/relay/#'
self._logger.debug(f"subscribing to {topic}")
client.subscribe(topic, qos=1)
def on_publish(self, client: mqtt.Client, userdata, mid):
if self._ota_mid is not None and mid == self._ota_mid and self._ota_publish_callback:
self._ota_publish_callback()
def set_message_callback(self, callback: callable):
self._message_callback = callback
def on_message(self, client: mqtt.Client, userdata, msg):
try:
match = re.match(r'^hk/(.*?)/relay/(stat|stat1|power|otares)$', msg.topic)
self._logger.debug(f'topic: {msg.topic}')
if not match:
return
device_id = match.group(1)
subtopic = match.group(2)
try:
next(d for d in self._devices if d.id == device_id)
except StopIteration:
return
message = None
if subtopic == 'stat':
message = StatPayload.unpack(msg.payload)
elif subtopic == 'stat1':
message = InitialStatPayload.unpack(msg.payload)
elif subtopic == 'power':
message = PowerPayload.unpack(msg.payload)
elif subtopic == 'otares':
message = OTAResultPayload.unpack(msg.payload)
if message and self._message_callback:
self._message_callback(device_id, message)
except Exception as e:
self._logger.exception(str(e))
def set_power(self, device_id, enable: bool):
device = next(d for d in self._devices if d.id == device_id)
assert device.secret is not None, 'device secret not specified'
payload = PowerPayload(secret=device.secret,
state=enable)
self._client.publish(f'hk/{device.id}/relay/power',
payload=payload.pack(),
qos=1)
self._client.loop_write()
def push_ota(self,
device_id,
filename: str,
publish_callback: callable,
qos: int):
device = next(d for d in self._devices if d.id == device_id)
assert device.secret is not None, 'device secret not specified'
self._ota_publish_callback = publish_callback
payload = OTAPayload(secret=device.secret, filename=filename)
publish_result = self._client.publish(f'hk/{device.id}/relay/admin/ota',
payload=payload.pack(),
qos=qos)
self._ota_mid = publish_result.mid
self._client.loop_write()
class MQTTRelayState:
enabled: bool
update_time: datetime.datetime
rssi: int
fw_version: int
ever_updated: bool
def __init__(self):
self.ever_updated = False
self.enabled = False
self.rssi = 0
def update(self,
enabled: bool,
rssi: int,
fw_version=None):
self.ever_updated = True
self.enabled = enabled
self.rssi = rssi
self.update_time = datetime.datetime.now()
if fw_version:
self.fw_version = fw_version
|
