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libup.py
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libup.py
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import time, logging
from paho.mqtt import client as mqtt_client
broker = 'localhost'
port = 1883
class MqttSwitch:
def __init__(self, clientId, topic, rate=60):
logging.info("start MQTT switch!")
self.topic = topic
self.connected = False
# xxx base
self.client = mqtt_client.Client(clientId)
# client.username_pw_set(username, password)
self.client.on_connect = self.on_connect
self.client.connect(broker, port)
self.client.loop_start()
self.state = None
self.rate = rate
self.nextUpdate = time.time()
# xxx base
def on_connect(self, client, userdata, flags, rc):
if rc == 0:
logging.info("Connected to MQTT Broker!")
self.connected = True
else:
logging.info("Failed to connect, return code %d\n", rc)
# xxx base
def publish(self, msg):
if not self.connected:
logging.info(f"MqttSwitch.publish(): not connected!")
return 1
t = time.time()
status = 0
if msg != self.state:
# publish instantly
status = self.client.publish(self.topic, msg)[0]
if status == 0:
logging.info(f"Send `{msg}` to topic `{self.topic}` ok")
self.state = msg
self.nextUpdate = t + self.rate
else:
logging.info(f"Failed to send message to topic {self.topic}")
return status
if t >= self.nextUpdate:
# result: [0, 1]
status = self.client.publish(self.topic, msg)[0]
if status == 0:
logging.info(f"Send `{msg}` to topic `{self.topic}` ok")
self.nextUpdate = t + self.rate
else:
logging.info(f"Failed to send message to topic {self.topic}")
else:
logging.info(f"throttling publish() {self.nextUpdate - t}...")
return status
class TasmotaSwitch:
def __init__(self, broker, topic):
logging.info(f"start TasmotaSwitch on broker {broker}!")
self.topic = topic
self.connected = False
# xxx base
self.client = mqtt_client.Client(topic)
# client.username_pw_set(username, password)
self.client.on_connect = self.on_connect
self.client.on_disconnect = self.on_disconnect
self.client.connect(broker, port)
self.state = None
self.start = 0
# xxx base
def on_connect(self, client, userdata, flags, rc):
try:
if rc == 0:
logging.info("Connected to MQTT Broker!")
self.connected = True
self.subscribe()
else:
logging.info("Failed to connect, return code %d\n", rc)
except:
print("EXCEPTION in on_connect()!\n")
# xxx base
def on_disconnect(client, userdata,rc=0):
logging.debug("mqtt: DisConnected !\n")
self.connected = False
# xxx base
def publish(self, msg):
if self.start:
print("TasmotaSwitch.publish(): already started, ignoring call\n")
return
if not self.connected:
logging.info(f"MqttSwitch.publish(): not connected!")
return 1
topic="cmnd/"+self.topic
t = time.time()
status = 0
if msg != self.state:
status = self.client.publish(topic, msg, 1, True)[0]
if status == 0:
logging.info(f"Send `{msg}` to topic `{topic}` ok")
self.state = msg
# self.nextUpdate = t + self.rate
self.start = t
else:
logging.info(f"Failed to send message to topic {topic}")
return status
return status
def subscribe(self):
def on_message(client, userdata, msg):
state = msg.payload.decode().lower()
print(f"Received `{state}` from `{msg.topic}` topic")
self.state = state
self.start = 0
topic="stat/"+self.topic
res = self.client.subscribe(topic)[0]
print(f"subscribe '{topic}', res: ", res)
self.client.on_message = on_message
def update(self):
# print("update: calling mqtt.loop...\n")
self.client.loop()
if self.start:
t = time.time()
d = t - self.start
if self.start and d > 5:
print(f"mqtt[{self.topic}]: timeout ({d}s) waiting for ack...")
self.start = 0
return False
return True
def running(self):
return self.start
class OnOffSwitch:
def __init__(self, broker, topic, switch):
logging.info("start OnOffSwitch !")
self.switch = TasmotaSwitch(broker, topic+"/"+switch)
self.state = None
def pulse(self):
if self.switch.publish("on") == 0:
self.state = "on"
def connected(self):
return self.switch.connected
def running(self):
return self.switch.running()
def update(self):
# print("update: calling mqtt.loop...\n")
self.switch.update()
if self.state == "on":
if not self.switch.running():
# on phase done, switch off
if self.switch.publish("off") == 0:
self.state = "off"
elif self.state == "off":
if not self.switch.running():
# of phase done, pulse done
self.state = None