#!/usr/bin/env python3

from twisted.internet import reactor

from txdbus import client

from txdbus.interface import DBusInterface, Method

iface = DBusInterface( 'org.freedesktop.DBus.Peer',
                       Method('Ping')
                     )
                
def onConnected(cli):
    d = cli.getRemoteObject( 'org.example', '/MyObjPath', iface )

    def gotObject( ro ):

        def onReply( rep ):
            print 'Object is available'
            reactor.stop()

        def onErr( err ):
            print 'Object does not exist. Retrying...'
            
        def ping():
            reactor.callLater(1, ping)
            ro.callRemote('Ping').addCallbacks( onReply, onErr )

        ping()

    d.addCallbacks( gotObject )

    return d


def onFailed(err):
    print 'Failed: ', err.getErrorMessage()

    
dc = client.connect(reactor)

dc.addCallbacks(onConnected)
dc.addErrback(onFailed)

reactor.run()
