68 lines
2.2 KiB
Python
68 lines
2.2 KiB
Python
|
import sys
|
||
|
|
import json
|
||
|
|
from flask_mqtt import Mqtt
|
||
|
|
import app.devices as devices
|
||
|
|
|
||
|
|
|
||
|
|
class MqttClient:
|
||
|
|
__initialized = False
|
||
|
|
mqtt = Mqtt()
|
||
|
|
|
||
|
|
# Mqtt setup
|
||
|
|
@staticmethod
|
||
|
|
def setup(app):
|
||
|
|
if not MqttClient.__initialized:
|
||
|
|
MqttClient.mqtt.init_app(app)
|
||
|
|
MqttClient.mqtt.client.on_message = MqttClient.handle_mqtt_message
|
||
|
|
MqttClient.mqtt.client.on_subscribe = MqttClient.handle_subscribe
|
||
|
|
MqttClient.__initialized = True
|
||
|
|
|
||
|
|
@MqttClient.mqtt.on_connect()
|
||
|
|
def handle_connect(client, userdata, flags, rc):
|
||
|
|
print('MQTT client connected')
|
||
|
|
MqttClient.mqtt.subscribe('device/+')
|
||
|
|
|
||
|
|
@MqttClient.mqtt.on_disconnect()
|
||
|
|
def handle_disconnect():
|
||
|
|
print('MQTT client disconnected')
|
||
|
|
|
||
|
|
print('MQTT client initialized')
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def tear_down():
|
||
|
|
if MqttClient.__initialized:
|
||
|
|
MqttClient.mqtt.unsubscribe_all()
|
||
|
|
if (hasattr(MqttClient.mqtt, 'client') and
|
||
|
|
MqttClient.mqtt.client is not None):
|
||
|
|
MqttClient.mqtt.client.disconnect()
|
||
|
|
print('MQTT client destroyed')
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def handle_subscribe(client, userdata, mid, granted_qos):
|
||
|
|
print('MQTT client subscribed')
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def handle_mqtt_message(client, userdata, message):
|
||
|
|
print("Received message!")
|
||
|
|
print("Topic: " + message.topic)
|
||
|
|
print("Payload: " + message.payload.decode())
|
||
|
|
try:
|
||
|
|
# If type is JSON
|
||
|
|
devices.create_recording(
|
||
|
|
MqttClient.get_device_id(message.topic),
|
||
|
|
json.loads(message.payload.decode()))
|
||
|
|
except ValueError:
|
||
|
|
print("ERROR!")
|
||
|
|
error_type, error_instance, traceback = sys.exc_info()
|
||
|
|
print("Type: " + str(error_type))
|
||
|
|
print("Instance: " + str(error_instance))
|
||
|
|
return
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def get_device_id(topic) -> int:
|
||
|
|
device_token, device_id = topic.split("/")
|
||
|
|
if device_token == "device":
|
||
|
|
return int(device_id)
|
||
|
|
else:
|
||
|
|
raise ValueError("Topic is in invalid format")
|