def main_loop(self, container_id):
"""
The 'internal' loop. Listen to SBus, receive datagram,
dispatch command, report back.
:param container_id: container id
:returns: exit status (SUCCESS/FAILURE)
"""
# Create SBus. Listen and process requests
sbus = SBus()
fd = sbus.create(self.pipe_path)
if fd < 0:
self.logger.error("Failed to create SBus. exiting.")
return EXIT_FAILURE
while True:
rc = sbus.listen(fd)
if rc < 0:
self.logger.error("Failed to wait on SBus. exiting.")
return EXIT_FAILURE
self.logger.debug("Wait returned")
dtg = sbus.receive(fd)
# TODO(eranr):
# Should we really be exitting here.
# If so should we exit the container altogether, so
# that it gets restarted?
if dtg is None:
self.logger.error("Failed to receive message. Exitting.")
return EXIT_FAILURE
outfd = dtg.get_service_out_fd()
if outfd is None:
self.logger.error("Received message does not have outfd."
" continuing.")
continue
self.logger.debug("Received outfd %d" % outfd)
with os.fdopen(outfd, 'w') as outfile:
resp = self.dispatch_command(dtg, container_id)
self.log_and_report(outfile, resp)
if not resp.iterable:
break
# We left the main loop for some reason. Terminating.
self.logger.debug('Leaving main loop')
return EXIT_SUCCESS
def main_loop(self, container_id):
"""
The 'internal' loop. Listen to SBus, receive datagram,
dispatch command, report back.
"""
# Create SBus. Listen and process requests
sbus = SBus()
fd = sbus.create(self.pipe_path)
if fd < 0:
self.logger.error("Failed to create SBus. exiting.")
return
b_iterate = True
b_status = True
error_text = ''
while b_iterate:
rc = sbus.listen(fd)
if rc < 0:
self.logger.error("Failed to wait on SBus. exiting.")
return
self.logger.debug("Wait returned")
dtg = sbus.receive(fd)
if not dtg:
self.logger.error("Failed to receive message. exiting.")
return
try:
# TODO(takashi): We had better use contextmanager
outfd = dtg.get_first_file_of_type(SBUS_FD_OUTPUT_OBJECT)
except Exception:
self.logger.error("Received message does not have outfd."
" continuing.")
continue
else:
self.logger.debug("Received outfd %d" % outfd.fileno())
b_status, error_text, b_iterate = \
self.dispatch_command(dtg, container_id)
self.log_and_report(outfd, b_status, error_text)
outfd.close()
# We left the main loop for some reason. Terminating.
self.logger.debug('Leaving main loop')
