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#!/usr/bin/env python
usage = """Usage:
python example-service.py &
python example-async-client.py
python example-client.py --exit-service
"""
import sys
import traceback
import gobject
import dbus
import dbus.mainloop.glib
# Callbacks for asynchronous calls
def handle_hello_reply(r):
global hello_replied
hello_replied = True
print str(r)
if hello_replied and raise_replied:
loop.quit()
def handle_hello_error(e):
global failed
global hello_replied
hello_replied = True
failed = True
print "HelloWorld raised an exception! That's not meant to happen..."
print "\t", str(e)
if hello_replied and raise_replied:
loop.quit()
def handle_hello_error(e):
global failed
global hello_replied
hello_replied = True
failed = True
print "HelloWorld raised an exception! That's not meant to happen..."
print "\t", str(e)
if hello_replied and raise_replied:
loop.quit()
def handle_raise_reply():
global failed
global raise_replied
raise_replied = True
failed = True
print "RaiseException returned normally! That's not meant to happen..."
if hello_replied and raise_replied:
loop.quit()
def handle_raise_error(e):
global raise_replied
raise_replied = True
print "RaiseException raised an exception as expected:"
print "\t", str(e)
if hello_replied and raise_replied:
loop.quit()
def make_calls():
# To make an async call, use the reply_handler and error_handler kwargs
remote_object.HelloWorld("Hello from example-async-client.py!",
dbus_interface='com.example.SampleInterface',
reply_handler=handle_hello_reply,
error_handler=handle_hello_error)
# Interface objects also support async calls
iface = dbus.Interface(remote_object, 'com.example.SampleInterface')
iface.RaiseException(reply_handler=handle_raise_reply,
error_handler=handle_raise_error)
return False
if __name__ == '__main__':
dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
bus = dbus.SessionBus()
try:
remote_object = bus.get_object("com.example.SampleService","/SomeObject")
except dbus.DBusException:
traceback.print_exc()
print usage
sys.exit(1)
# Make the method call after a short delay
gobject.timeout_add(1000, make_calls)
failed = False
hello_replied = False
raise_replied = False
loop = gobject.MainLoop()
loop.run()
if failed:
raise SystemExit("Example async client failed!")
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