Tornado: Can I run code after calling self.finish() in an asynchronous RequestHandler?

Question

I\'m using Tornado. I have a bunch of asynchronous request handlers. Most of them do their work asynchronously, and then report the result of that work back to the user. But

Answer 1

Yes, you can.

You have to define on_finish method of your RequestHandler. This is a function run after the request finished and has sent the response to client.

RequestHandler.on_finish()

Called after the end of a request.

Override this method to perform cleanup, logging, etc. This method is a counterpart to prepare. on_finish may not produce any output, as it is called after the response has been sent to the client.