async_.py

#!/usr/bin/env python
# encoding: utf8
#
# Copyright © Burak Arslan <burak at arskom dot com dot tr>,
#             Arskom Ltd. http://www.arskom.com.tr
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#
# FIXME: This example is not working. It's here just so we don't forget about
# it. Please ignore this.
#

"""
This is a very simple async service that sleeps for a specified
number of seconds and then call back the caller with a message.
This kicks off a new Thread for each request, which is not recommended
for a real-world application.  Spyne does not provide any thread
management or scheduling mechanism, the service is responsible for the
execution of the async process.
"""

import logging
import time
from threading import Thread

from spyne.application import Application
from spyne.decorator import rpc
from spyne.model.primitive import Integer
from spyne.model.primitive import String
from spyne.protocol.soap import Soap11
from spyne.server.wsgi import WsgiApplication
from spyne.service import Service
from spyne.util import get_callback_info


class SleepingService(Service):
    @rpc(Integer, _is_async=True)
    def sleep(ctx, seconds):
        msgid, replyto = get_callback_info()

        def run():
            time.sleep(seconds)

            client = make_service_client(replyto, self)
            client.woke_up('good morning', msgid=msgid)

        Thread(target=run).start()

    @rpc(String, _is_callback=True)
    def woke_up(ctx, message):
        pass

if __name__=='__main__':
    logging.basicConfig(level=logging.DEBUG)
    logging.getLogger('spyne.protocol.xml').setLevel(logging.DEBUG)

    try:
        from wsgiref.simple_server import make_server
    except ImportError:
        logging.error("Error: example server code requires Python >= 2.5")

    application = Application([SleepingService], 'spyne.examples.async',
                                    in_protocol=Soap11(), out_protocol=Soap11())

    server = make_server('127.0.0.1', 8000, WsgiApplication(application))

    logging.info("listening to http://127.0.0.1:8000")
    logging.info("wsdl is at: http://localhost:8000/?wsdl")

    server.serve_forever()