Python Http Server: shut down server when shared queue has N items

Question

I'm implementing an HTTP server using python BaseHttpServer.

I have a queue that is shared by different threads. And each time my handler receives a request, it puts it into the shared queue. When the number of requests in queue reaches n, I'd like to shutdown the server. Here's what I have right now:

while self.queue.qsize() != n
     self.server.handle_request()

My concern about this approach is that, it is possible that when checking self.queue.qsize() it's not yet n, but after that the size becomes n immediately (because the queue is shared by multiple threads) and there's no following requests anymore. Given that server.handle_request() blocks if there is no requests, the server may shutdown anymore. Is there a way to solve this problem?

Yash · Accepted Answer · 2019-09-16 17:11:24Z

0

Bind a thread to the process:

httpd = BaseHTTPServer.HTTPServer(('', 80), MyHandler)
print("Starting server in thread")
threading.Thread(target=httpd.serve_forever).start()

Shutting Down:

toKill = threading.Event()

# in handler
toKill.set()

# in main thread
toKill.wait()
httpd.shutdown()

answered Sep 16, 2019 at 17:11

Yash

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