Communicating with a running python daemon

Question

I wrote a small Python application that runs as a daemon. It utilizes threading and queues.

I\'m looking for general approaches to altering this application so that

Answer 1

You could associate it with Pyro (http://pythonhosted.org/Pyro4/) the Python Remote Object. It lets you remotely access python objects. It's easily to implement, has low overhead, and isn't as invasive as Twisted.

Answer 2

Yet another approach: use Pyro (Python remoting objects).

Pyro basically allows you to publish Python object instances as services that can be called remotely. I have used Pyro for the exact purpose you describe, and I found it to work very well.

By default, a Pyro server daemon accepts connections from everywhere. To limit this, either use a connection validator (see documentation), or supply host='127.0.0.1' to the Daemon constructor to only listen for local connections.

Example code taken from the Pyro documentation:

Server

import Pyro.core

class JokeGen(Pyro.core.ObjBase):
        def __init__(self):
                Pyro.core.ObjBase.__init__(self)
        def joke(self, name):
                return "Sorry "+name+", I don't know any jokes."

Pyro.core.initServer()
daemon=Pyro.core.Daemon()
uri=daemon.connect(JokeGen(),"jokegen")

print "The daemon runs on port:",daemon.port
print "The object's uri is:",uri

daemon.requestLoop()

Client

import Pyro.core

# you have to change the URI below to match your own host/port.
jokes = Pyro.core.getProxyForURI("PYROLOC://localhost:7766/jokegen")

print jokes.joke("Irmen")

Another similar project is RPyC. I have not tried RPyC.