lot_manager/test2.py

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2024-01-03 18:28:27 +08:00
import asyncio
import json
import paho.mqtt.client as mqtt
from pydantic import BaseModel
broker = 'mqtt.lihaink.cn'
port = 1883
class BaseResponse(BaseModel):
code: int = 200
msg: str = "success"
class MQTTClient:
def __init__(self, broker, port, topic, username, password):
self.broker = broker
self.port = port
self.topic = topic
self.username = username
self.password = password
# 千万不要指定client_id 不然死翘翘
self.client = mqtt.Client()
self.client.username_pw_set(self.username, self.password)
def push(self):
self.client.publish(self.topic, payload=json.dumps({"msg": "open_led"}, ensure_ascii=False),
qos=0)
self.client.publish(self.topic, payload=json.dumps({"msg": "push_stream"}, ensure_ascii=False),
qos=0)
def close(self):
self.client.publish(self.topic, payload=json.dumps({"msg": "close_stream"}, ensure_ascii=False),
qos=0)
self.client.publish(self.topic, payload=json.dumps({"msg": "close_led"}, ensure_ascii=False),
qos=0)
def start(self):
self.client.connect(self.broker, self.port)
user_sched = {}
async def close(username, device):
# 倒计时600秒
await asyncio.sleep(35)
print(username + "结束推流")
user_sched.pop(username)
close_stream(username, device)
async def task_start(username, device):
print(username + "创建结束推流定时任务")
task = asyncio.create_task(close(username, device))
user_sched[username] = task
async def start(username, device):
try:
# 如果定时任务不存在,那么直接进行推流。当用户退出界面时,创建任务
if username not in user_sched:
print(username + "开始推流")
push_stream(username, device)
# 如果定时任务存在,那么取消上次的任务。当用户退出界面时,创建任务
else:
t = user_sched[username]
# 取消任务
if t is not None:
print(username + "取消定时任务")
t.cancel()
# return BaseResponse(code=200, msg="success")
except Exception as e:
return BaseResponse(code=500, msg=str(e))
async def stop(username, device):
try:
await task_start(username, device)
# return BaseResponse(code=200, msg="success")
except Exception as e:
return BaseResponse(code=500, msg=str(e))
def push_stream(username, device):
MQTT = MQTTClient(broker, port, device, username, username)
MQTT.start()
MQTT.push()
def close_stream(username, device):
MQTT = MQTTClient(broker, port, device, username, username)
MQTT.start()
MQTT.close()