def test_build_from_raw_message(self):
str_metadata = json.dumps(self.metadata)
str_cmd_params = json.dumps(self.dtg.cmd_params)
dtg = SBusDatagram.build_from_raw_message(
self.fds, str_metadata, str_cmd_params)
self.assertEqual(self.command, dtg.command)
self.assertEqual(self.fds, dtg.fds)
self.assertEqual(self.metadata, dtg.metadata)
self.assertEqual(self.params, dtg.params)
self.assertEqual(self.task_id, dtg.task_id)
def receive(self, sbus_handler):
ph_files = POINTER(c_int)()
pp_metadata = (c_char_p)()
pp_params = (c_char_p)()
pn_files = (c_int)()
pn_metadata = (c_int)()
pn_params = (c_int)()
# Invoke C function
n_status = self.sbus_back_.sbus_recv_msg(sbus_handler,
ph_files,
pn_files,
pp_metadata,
pn_metadata,
pp_params,
pn_params)
if n_status < 0:
return None
# The invocation was successful.
# De-serialize the data
# Aggregate file descriptors
n_files = pn_files.value
h_files = []
for i in xrange(n_files):
h_files.append(ph_files[i])
# Extract Python strings
n_metadata = pn_metadata.value
str_metadata = pp_metadata.value
n_params = pn_params.value
str_params = pp_params.value
# Trim the junk out
if 0 < n_metadata:
str_metadata = str_metadata[0:n_metadata]
str_params = str_params[0:n_params]
# Construct actual result datagram
return SBusDatagram.build_from_raw_message(
h_files, str_metadata, str_params)
