Running an async background task in Tornado - Stack Overflow
from tornado.ioloop import IOLoop from tornado.stack_context import run_in_stack_context, NullContext IOLoop.current().add_future(run_in_stack_context(NullContext(), self._background_task), lambda f: f.result()) Something like this will probably be added to tornado itself in the future.
Python Tornado - How to create background process?
2015年8月21日 · 1. See this question for the right way to run a background task. If you want the task to run infinitely, just put it in a while True: loop. Just make sure that when the task waits to consume from the message queue, you do it using a non-blocking call. If you're using a third-party queuing library, you may need to find a tornado -friendly version.
Tornado websocket async background task - Stack Overflow
2016年5月12日 · 1. I try to create a tornado websocket, which is in the background. to handle events of input from a another device. Usecase: Control the raspberry pi with a websocket connection from android app. i am able to create a connection with the following implemtation: main.py: print "start application". port = 7004.
Tornado background task using cx_Oracle - Stack Overflow
2018年5月9日 · tornado.concurrent.Future is similar to concurrent.futures.Future, but not thread-safe (and therefore faster for use with single-threaded event loops). All in all, I think I should create a new thread to take care of the CX_Oracle operations.
Infinite "background" loop for Tornado WebSockets handler
2015年4月10日 · What I would like to do is execute a specific command, that will dispatch a message for every cycle of the IOLoop. To make it more clear; let's say I have the following WebSocket handler. class MyHandler(websocket.WebSocketHandler): def auto_loop(self, *args, **kwargs): self.write_message('automatic message')
How to launch a background task in tornado, which will not block ...
2019年3月1日 · Solve it: import tornado import tornado.ioloop import tornado.web from tornado.process import Subprocess #from tornado.stack_context import run_in_stack_context, NullContext import time import random import json import asyncio class meta_doc(type): def __init__(cls, name, bases, methods): super().__init__(name, bases, methods) cls.storage_size=0 class Documentation_parsing(tornado.web ...
Running Background task with Python and Tornado
2015年3月26日 · If you need to pause between loops in moveForward, do something like: Never use "time.sleep" in a Tornado callback or coroutine, it blocks all event processing for your entire process. Use IOLoop.add_timeout, or "yield gen.sleep (n)", instead. Better than constantly running a background task. Works a charm good sir.
python - Tornado web asynchronous - Stack Overflow
2018年3月10日 · Simply adding @tornado.web.asynchronous decorator to any of the functions (get, post, etc.) is not enough if the function performs only synchronous actions. What does the @tornado.web.asynchronous decorator do? Let's look at the get function. The statements are executed one after another in a synchronous manner.
Css background-image, image serving by tornado - Stack Overflow
2014年8月20日 · Css background-image, image serving by tornado. Ask Question Asked 10 years, 1 month ago.
Performing long running compute intensive operation on …
2019年3月1日 · answer_prediction = predictor.predict (passage=str (context), question=str (question)) Blocks the main thread for incoming requests and waits until that long running operation is completed whilst blocking for other requests and times out the current request sometimes. I have read this answer detailing a solution with putting the long running ...