def on_ambulance(self, clnt, userdata, msg):
try:
logger.debug("on_ambulance: msg = '{}'".format(
msg.topic, msg.payload))
# parse topic
user, client, data, ambulance_id = self.parse_topic(msg, 4)
except Exception as e:
logger.debug("on_ambulance: ParseException '{}'".format(e))
return
try:
# retrieve ambulance
logger.debug('ambulance_id = {}'.format(ambulance_id))
ambulance = Ambulance.objects.get(id=ambulance_id)
except Ambulance.DoesNotExist:
# send error message to user
self.send_error_message(
user, client, msg.topic, msg.payload,
"Ambulance with id '{}' does not exist".format(ambulance_id))
return
except Exception as e:
# send error message to user
self.send_error_message(user, client, msg.topic, msg.payload,
"Exception: '{}'".format(e))
return
try:
logger.debug("on_ambulance: ambulance = '{}', data = '{}'".format(
ambulance, data))
# updates must match client
if client.ambulance != ambulance:
# send error message to user
self.send_error_message(
user, client, msg.topic, msg.payload,
"Client '{}' is not currently authorized to update ambulance '{}'"
.format(client.client_id, ambulance.identifier))
return
is_valid = False
if isinstance(data, (list, tuple)):
# update ambulances in bulk
serializer = AmbulanceUpdateSerializer(data=data,
many=True,
partial=True)
if serializer.is_valid():
# save to database
serializer.save(ambulance=ambulance, updated_by=user)
is_valid = True
else:
# update ambulance
serializer = AmbulanceSerializer(ambulance,
data=data,
partial=True)
if serializer.is_valid():
# save to database
serializer.save(updated_by=user)
is_valid = True
if not is_valid:
logger.debug('on_ambulance: INVALID serializer')
# send error message to user
self.send_error_message(user, client, msg.topic, msg.payload,
serializer.errors)
except Exception as e:
logger.debug('on_ambulance: EXCEPTION')
# send error message to user
self.send_error_message(user, client, msg.topic, msg.payload,
"Exception '{}'".format(e))
logger.debug('on_ambulance: DONE')
def on_ambulance(self, clnt, userdata, msg):
try:
logger.debug("on_ambulance: msg = '{}'".format(
msg.topic, msg.payload))
# parse topic
user, client, data, ambulance_id = self.parse_topic(msg, 4)
except Exception as e:
logger.debug("on_ambulance: ParseException '{}'".format(e))
return
try:
# retrieve ambulance
logger.debug('ambulance_id = {}'.format(ambulance_id))
ambulance = Ambulance.objects.get(id=ambulance_id)
except Ambulance.DoesNotExist:
# send error message to user
self.send_error_message(
user, client, msg.topic, msg.payload,
"Ambulance with id '{}' does not exist".format(ambulance_id))
return
except Exception as e:
# send error message to user
self.send_error_message(user, client, msg.topic, msg.payload,
"Exception: '{}'".format(e))
return
try:
logger.debug("on_ambulance: ambulance = '{}', data = '{}'".format(
ambulance, data))
is_valid = False
if isinstance(data, (list, tuple)):
# bulk updates must match location_client
if ambulance.location_client is None or ambulance.location_client.client_id != client.client_id:
# send error message to user
self.send_error_message(
user, client, msg.topic, msg.payload,
"Client '{}' is not currently authorized to update ambulance '{}'"
.format(client.client_id, ambulance.identifier))
return
# update ambulances in bulk
serializer = AmbulanceUpdateSerializer(data=data,
many=True,
partial=True)
if serializer.is_valid():
# save to database
serializer.save(ambulance=ambulance, updated_by=user)
is_valid = True
else:
# update ambulance
serializer = AmbulanceSerializer(ambulance,
data=data,
partial=True)
if serializer.is_valid():
try:
# wrap in atomic in case of errors
with transaction.atomic():
# current location client
old_location_client = ambulance.location_client
# save to database
serializer.save(updated_by=user)
is_valid = True
# retrieve location client
new_location_client = Ambulance.objects.get(
id=ambulance_id).location_client
# logger.debug("old_location_client: {}".format(old_location_client))
# logger.debug("new_location_client: {}".format(new_location_client))
# change in location client?
if old_location_client != new_location_client:
# logger.debug("location_client changed from '{}' to {}".format(old_location_client,
# new_location_client))
# log out old client
if old_location_client:
client_ambulance = old_location_client.ambulance
if client_ambulance:
details = client_ambulance.identifier
else:
details = 'None'
log = ClientLog(
client=old_location_client,
status=old_location_client.status,
activity=ClientActivity.TL.name,
details=details)
log.save()
# log in new client
if new_location_client:
client_ambulance = new_location_client.ambulance
if client_ambulance:
details = client_ambulance.identifier
else:
details = 'None'
log = ClientLog(
client=new_location_client,
status=new_location_client.status,
activity=ClientActivity.SL.name,
details=details)
log.save()
# otherwise must match location_client
elif ambulance.location_client is None or ambulance.location_client.client_id != client.client_id:
# raise error to rollback transaction
raise ClientException()
except ClientException:
# send error message to user
self.send_error_message(
user, client, msg.topic, msg.payload,
"Client '{}' is not currently authorized to update ambulance '{}'"
.format(client.client_id, ambulance.identifier))
if not is_valid:
logger.debug('on_ambulance: INVALID serializer')
# send error message to user
self.send_error_message(user, client, msg.topic, msg.payload,
serializer.errors)
except Exception as e:
logger.debug('on_ambulance: serializer EXCEPTION')
# send error message to user
self.send_error_message(user, client, msg.topic, msg.payload, e)
logger.debug('on_ambulance: DONE')
def test(self):
# Bulk update ambulance a1
a = self.a1
user = self.u1
location0 = {'latitude': -3., 'longitude': 6.}
location = {'latitude': -2., 'longitude': 7.}
orientation = calculate_orientation(dict2point(location0),
dict2point(location))
data = [{
'status': AmbulanceStatus.AH.name,
'location': location0,
}, {
'location': location,
'timestamp': timezone.now()
}, {
'status': AmbulanceStatus.OS.name
}]
serializer = AmbulanceUpdateSerializer(data=data,
many=True,
partial=True)
serializer.is_valid(raise_exception=True)
serializer.save(ambulance=Ambulance.objects.get(id=a.id),
updated_by=user)
# test AmbulanceUpdateSerializer
queryset = AmbulanceUpdate.objects.filter(ambulance=a)
answer1 = []
for u in queryset:
serializer = AmbulanceUpdateSerializer(u)
result = {
'id': u.id,
'ambulance_id': u.ambulance.id,
'ambulance_identifier': u.ambulance.identifier,
'comment': u.comment,
'capability': u.capability,
'status': u.status,
'orientation': u.orientation,
'location': point2str(u.location),
'timestamp': date2iso(u.timestamp),
'updated_by_username': u.updated_by.username,
'updated_on': date2iso(u.updated_on)
}
answer1.append(serializer.data)
self.assertDictEqual(serializer.data, result)
# make sure last update is reflected in ambulance
a = Ambulance.objects.get(id=a.id)
serializer = AmbulanceSerializer(a)
self.assertEqual(math.fabs(orientation - a.orientation) < 1e-4, True)
orientation = a.orientation
result = {
'id': a.id,
'identifier': a.identifier,
'comment': a.comment,
'capability': a.capability,
'status': AmbulanceStatus.OS.name,
'orientation': orientation,
'location': point2str(location),
'timestamp': date2iso(a.timestamp),
'client_id': None,
'updated_by': a.updated_by.id,
'updated_on': date2iso(a.updated_on)
}
self.assertDictEqual(serializer.data, result)
# Bulk update ambulance a2
a = self.a3
user = self.u3
data = [{
'status': AmbulanceStatus.AH.name,
'location': location0
}, {
'status': AmbulanceStatus.OS.name
}, {
'location': location,
'timestamp': timezone.now()
}]
serializer = AmbulanceUpdateSerializer(data=data,
many=True,
partial=True)
serializer.is_valid(raise_exception=True)
serializer.save(ambulance=Ambulance.objects.get(id=a.id),
updated_by=user)
# test AmbulanceUpdateSerializer
queryset = AmbulanceUpdate.objects.filter(ambulance=a)
answer3 = []
for u in queryset:
serializer = AmbulanceUpdateSerializer(u)
result = {
'id': u.id,
'ambulance_id': a.id,
'ambulance_identifier': a.identifier,
'comment': u.comment,
'capability': u.capability,
'status': u.status,
'orientation': u.orientation,
'location': point2str(u.location),
'timestamp': date2iso(u.timestamp),
'updated_by_username': u.updated_by.username,
'updated_on': date2iso(u.updated_on)
}
answer3.append(serializer.data)
self.assertDictEqual(serializer.data, result)
# make sure last update is reflected in ambulance
a = Ambulance.objects.get(id=a.id)
serializer = AmbulanceSerializer(a)
self.assertEqual(math.fabs(orientation - a.orientation) < 1e-4, True)
orientation = a.orientation
result = {
'id': a.id,
'identifier': a.identifier,
'comment': a.comment,
'capability': a.capability,
'status': AmbulanceStatus.OS.name,
'orientation': orientation,
'location': point2str(location),
'timestamp': date2iso(a.timestamp),
'client_id': None,
'updated_by': a.updated_by.id,
'updated_on': date2iso(a.updated_on)
}
self.assertDictEqual(serializer.data, result)
# Test api
# instantiate client
client = Client()
# login as admin
client.login(username=settings.MQTT['USERNAME'],
password=settings.MQTT['PASSWORD'])
# retrieve ambulances updates
response = client.get('/en/api/ambulance/{}/updates/'.format(
self.a1.id),
follow=True)
self.assertEqual(response.status_code, 200)
result = JSONParser().parse(BytesIO(response.content))
self.assertCountEqual(result, answer1)
self.assertEqual(len(result), 4)
# retrieve ambulances updates
response = client.get('/en/api/ambulance/{}/updates/'.format(
self.a3.id),
follow=True)
self.assertEqual(response.status_code, 200)
result = JSONParser().parse(BytesIO(response.content))
self.assertCountEqual(result, answer3)
self.assertEqual(len(result), 4)
# logout
client.logout()
# login as testuser1
client.login(username='******', password='******')
# retrieve ambulances
response = client.get('/en/api/ambulance/{}/updates/'.format(
self.a1.id),
follow=True)
self.assertEqual(response.status_code, 404)
# retrieve ambulances
response = client.get('/en/api/ambulance/{}/updates/'.format(
self.a3.id),
follow=True)
self.assertEqual(response.status_code, 404)
# logout
client.logout()
# login as testuser2
client.login(username='******', password='******')
# retrieve ambulances
response = client.get('/en/api/ambulance/{}/updates/'.format(
self.a1.id),
follow=True)
self.assertEqual(response.status_code, 404)
# retrieve ambulances updates
response = client.get('/en/api/ambulance/{}/updates/'.format(
self.a3.id),
follow=True)
self.assertEqual(response.status_code, 200)
result = JSONParser().parse(BytesIO(response.content))
self.assertCountEqual(result, answer3)
self.assertEqual(len(result), 4)
# logout
client.logout()