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#!/usr/bin/env python
from twisted.internet import reactor, defer
from txdbus import client, objects, error
from txdbus.interface import DBusInterface, Signal
class SignalSender (objects.DBusObject):
iface = DBusInterface( 'org.example.SignalSender',
Signal('tick', 'u')
)
dbusInterfaces = [iface]
def __init__(self, objectPath):
super(SignalSender, self).__init__(objectPath)
self.count = 0
def sendTick(self):
self.emitSignal('tick', self.count)
self.count += 1
reactor.callLater(1, self.sendTick)
@defer.inlineCallbacks
def main():
try:
conn = yield client.connect(reactor)
s = SignalSender('/Signaller')
conn.exportObject( s )
yield conn.requestBusName('org.example')
print 'Object exported on bus name "org.example" with path /Signaller'
print 'Emitting "tick" signals every second'
s.sendTick() # begin looping
except error.DBusException, e:
print 'Failed to export object: ', e
reactor.stop()
reactor.callWhenRunning( main )
reactor.run()
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