def handle(self, *args, **options):
config = settings.MLLP_SOCKETS
server = LLPServer(config)
self.dispatcher = Dispatcher()
if options['postmortem']:
try:
self.postmortem = True
server.dispatch(self.recv_handler)
except:
pdb.post_mortem()
raise
else:
server.dispatch(self.recv_handler)
class Command(BaseCommand):
args = 'runmllpserver'
help = """Run a server communicating with a HL7 server to dispatch messages.
Usage:\n\n\tdjango [options] runmllpserver [--pdb]
--pdb for postmortem debugger
"""
option_list = BaseCommand.option_list + (
make_option('--pdb',
action='store_true',
dest='postmortem',
default=False,
help='Post mortem debugger on error'),
)
postmortem = False
def handle(self, *args, **options):
config = settings.MLLP_SOCKETS
server = LLPServer(config)
self.dispatcher = Dispatcher()
if options['postmortem']:
try:
self.postmortem = True
server.dispatch(self.recv_handler)
except:
pdb.post_mortem()
raise
else:
server.dispatch(self.recv_handler)
def recv_handler(self, msg, server, connection):
msg = msg.decode('utf-8')
logger.debug('RECV: %s', msg.replace(CR, '\n'))
# Logic here - parse the message HL7
# perform required validation
# Send ack / error message that message received.
# If enhanced mode, do the requisite steps to store then ack
try:
msg = hl7.parse(msg)
except:
logger.exception('Error parsing message')
if self.postmortem:
pdb.post_mortem()
resp = responses.hl7NAK('AE', 'UNABLE TO PARSE REQUEST')
logger.debug('SEND: %s', unicode(resp).replace(CR, '\n'))
server._write_frame(connection, unicode(resp).encode('utf-8'))
return
try:
# DISPATCH MESSAGE HERE. Expect an acknowledgement response message -
resp = self.dispatcher.dispatch(msg)
if resp is None:
raise Exception('Application returned and invalid response (None) - response required')
logger.debug('SEND: %s', unicode(resp).replace(CR, '\n'))
server._write_frame(connection, unicode(resp).encode('utf-8'))
return
except:
logger.exception('Error dispatching message')
if self.postmortem:
pdb.post_mortem()
resp = responses.hl7NAK('AE', 'INTERNAL ERROR PROCESSING REQUEST')
logger.debug('SEND: %s', unicode(resp).replace(CR, '\n'))
server._write_frame(connection, unicode(resp).encode('utf-8'))
return
