Serve multiple Applications from a single HTTPServer

[mrocklin]

I would like to serve a variety of applications from a single HTTPServer.

Normally, I would just take the various handler dictionaries and merge them somehow. However, one of my applications is a Bokeh server application, which has its own custom subclass of tornado.web.Application, and I'd rather not try to unpack the logic that that custom subclass does.

In my ideal world I would either ...

1. List all of the applications, and hope that their routes do not intersect

   server = web.HTTPServer([app1, app2])

2. Key each application with a prefix

   server = web.HTTPServer({"/app1": app1, "/app2": app2})

Is there some way to do something similar today?

[mrocklin]

OK, it seems like I might be able to make a custom Application class, or perhaps anything that looks like a HTTPServerConnectionDelegate, that takes a list of applications, and whenever we're asked to find_handler we iterate through the provided Applications until something matches. This would break of course if any of the earlier applications had any sort of catch-all handler, but might work otherwise?

[bdarnell]

This is something that the tornado.routing module is intended to help with. We don't have any worked examples of this (and there may still be some missing pieces), but in theory you should be able to use a RuleRouter to send things to your different Applications.

[mrocklin]

Thanks @bdarnell . I've worked around this in the meantime, but I'm glad to learn about tornado.routing. Hopefully I can replace my hacky workaround with it in the future.