Celery + SQS 两次接收相同的任务，同时具有相同的任务 ID

在 Flask 应用程序中使用带有 SQS 的 celery
but celery 同时接收两次具有相同任务 ID 的相同任务,

像这样运行工人，
celery worker -A app.jobs.run -l info --pidfile=/var/run/celery/celery.pid --logfile=/var/log/celery/celery.log --time-limit=7200 --concurrency=8

这是芹菜的日志

[2019-11-29 08:07:35,464: INFO/MainProcess] Received task: app.jobs.booking.bookFlightTask[657985d5-c3a3-438d-a524-dbb129529443]  
[2019-11-29 08:07:35,465: INFO/MainProcess] Received task: app.jobs.booking.bookFlightTask[657985d5-c3a3-438d-a524-dbb129529443]  
[2019-11-29 08:07:35,471: WARNING/ForkPoolWorker-4] in booking funtion1
[2019-11-29 08:07:35,473: WARNING/ForkPoolWorker-3] in booking funtion1
[2019-11-29 08:07:35,537: WARNING/ForkPoolWorker-3] book_request_pp
[2019-11-29 08:07:35,543: WARNING/ForkPoolWorker-4] book_request_pp

同一任务收到两次并且两者同时运行，

在Python Flask中使用 celery==4.4.0rc4 ， boto3==1.9.232， kombu==4.6.6 和 SQS 。
在SQS中，默认可见性超时为30分钟，我的任务是没有ETA并且没有确认

我的任务.py

from app import app as flask_app
from app.jobs.run import capp
from flask_sqlalchemy import SQLAlchemy
db = SQLAlchemy(flask_app)

class BookingTasks:
    def addBookingToTask(self):
        request_data = request.json
        print ('in addBookingToTask',request_data['request_id'])
        print (request_data)
        bookFlightTask.delay(request_data)
        return 'addBookingToTask added'

@capp.task(max_retries=0)
def bookFlightTask(request_data):
    task_id = capp.current_task.request.id
    try:
        print ('in booking funtion1')
        ----

我的配置文件，config.py

import os
from urllib.parse import quote_plus

aws_access_key = quote_plus(os.getenv('AWS_ACCESS_KEY'))
aws_secret_key = quote_plus(os.getenv('AWS_SECRET_KEY'))

broker_url = "sqs://{aws_access_key}:{aws_secret_key}@".format(
    aws_access_key=aws_access_key, aws_secret_key=aws_secret_key,
)
imports = ('app.jobs.run',)


## Using the database to store task state and results.
result_backend = 'db' + '+' + os.getenv('SQLALCHEMY_DATABASE_URI')

最后是我的芹菜应用程序文件 run.py

from __future__ import absolute_import, unicode_literals
import os
from celery import Celery
from flask import Flask
from app import app as flask_app
import sqlalchemy
capp = Celery()

capp.config_from_object('app.jobs.config')

# Optional configuration, see the capplication user guide.
capp.conf.update(
    result_expires=3600,
)
 
# SQS_QUEUE_NAME is like 'celery_test.fifo' , .fifo is required
capp.conf.task_default_queue = os.getenv('FLIGHT_BOOKINNG_SQS_QUEUE_NAME')
if __name__ == '__main__':
    capp.start()

默认 SQS visiblity_timeout 为 30 秒。您需要更新 celery 配置值：broker_transport_options={'visibility_timeout': 3600}.

当 celery 创建队列时，它会将可见性超时设置为 1 小时。

注意：如果指定了task_default_queue，并且队列已经创建而没有指定broker_transport_options={'visibility_timeout': 3600}, celery 在重新启动时不会更新可见性超时broker_transport_options={'visibility_timeout': 3600}。您将需要删除队列并让 celery 重新创建它。