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===Code Samples===
import Pyro.core, Pyro.naming, Pyro.constants
import Pyro.EventService.Server
from Pyro.errors import *
# SUBSCRIBER: subscribes to certain events.
class Subscriber(Pyro.core.CallbackObjBase):
def __init__(self, ident=None):
Pyro.core.ObjBase.__init__(self)
Pyro.core.initServer()
Pyro.core.initClient()
daemon = Pyro.core.Daemon()
locator = Pyro.naming.NameServerLocator(identification=ident)
self.NS = locator.getNS(host=Pyro.config.PYRO_NS_HOSTNAME)
daemon.useNameServer(self.NS)
daemon.connect(self) # will also set self.daemon...
uri = self.NS.resolve(Pyro.constants.EVENTSERVER_NAME)
self.eventservice=Pyro.core.getProxyForURI(uri)
self.eventservice._setIdentification(ident)
self.abortListen=0
self.daemon=daemon # make sure daemon doesn't get garbage collected now
def subscribe(self,subjects):
# Subscribe to one or more subjects.
# It is safe to call this multiple times.
self.eventservice.subscribe(subjects, self.getProxy())
def subscribeMatch(self,subjectPatterns):
# Subscribe to one or more subjects (by pattern)
# It is safe to call this multiple times.
self.eventservice.subscribeMatch(subjectPatterns, self.getProxy())
def unsubscribe(self, subjects):
# Unsubscribe the subscriber for the given subject(s).
self.eventservice.unsubscribe(subjects, self.getProxy())
def abort(self):
self.abortListen=1
def setThreading(self, threaded):
self.getDaemon().threaded=threaded
def listen(self):
self.getDaemon().requestLoop(lambda s=self: not s.abortListen)
def event(self, event): # callback, override this!
print event
# PUBLISHER: publishes events.
class Publisher:
def __init__(self, ident=None):
Pyro.core.initClient()
locator = Pyro.naming.NameServerLocator(identification=ident)
ns = locator.getNS(host=Pyro.config.PYRO_NS_HOSTNAME)
uri = ns.resolve(Pyro.constants.EVENTSERVER_NAME)
self.eventservice=Pyro.core.getProxyForURI(uri)
self.eventservice._setIdentification(ident)
def publish(self, subjects, msg):
self.eventservice.publish(subjects,msg)
==References==
