def send_url(request):
try:
if "CONTENT_TYPE" in request.META:
content_type = "CONTENT_TYPE"
else:
content_type = "HTTP_CONTENT_TYPE"
if request.META[content_type] == RP_RESPONSE_CONTENT_TYPES[
"URL_ENCODED"]:
data = request.data
content = data.dict()
else:
content = request.data
# decrement key1
to = content['to_no_plus']
key1 = f"MO_MT_KEY_{to}"
key2 = f"MSG_KEY_{to}"
key1_val = int(r.decr(key1))
if key1_val >= 0:
r.lpush(key2, str(content))
else:
action = "end"
# code here is currently temporary
if content["session_status"] == RP_RESPONSE_STATUSES["waiting"]:
action = "request"
msg_extras = dict(msg_type="Outgoing",
status="Received",
action=action)
content.update(msg_extras)
push = push_ussd(content, request)
# reset key to 1
r.set(key1, 0, ex=10)
return Response({"message": "success"}, status=200)
except Exception as err:
error_logger.exception(err)
def post(self, request, *args, **kwargs):
access_logger.info(request)
try:
if "channel_id" in kwargs:
channel_id = kwargs['channel_id']
channel = USSDChannel.objects.get(pk=channel_id)
form = ChannelConfForm(request.POST, instance=channel)
else:
form = ChannelConfForm(request.POST)
if form.is_valid():
form.save()
self.msg = 'Channel configurations successfully saved.'
self.success = True
return redirect(reverse("channel_list"))
else:
self.msg = 'Form is not valid'
return render(
request, self.template_name, {
"form": form,
"msg": self.msg,
"success": self.success,
"hostname": self.hostname
})
except Exception as err:
error_logger.exception(err)
def post(self, request, handler_id=None):
access_logger.info(request)
try:
if handler_id:
handler = Handler.objects.get(pk=handler_id)
self.auth_scheme = handler.auth_scheme
self.aggregator = handler.aggregator
self.get_auth_token()
self.isNewHandler = False
form = HandlerForm(request.POST, instance=handler)
else:
form = HandlerForm(request.POST)
if form.is_valid():
form.save()
# create new non-staff user and assign them an auth token
if self.isNewHandler:
aggregator = form.cleaned_data["aggregator"]
self.create_auth_user(aggregator)
self.msg = 'Saved'
self.success = True
else:
self.msg = 'Form is invalid'
self.success = False
return render(request, self.template_name,
{"form": form, "msg": self.msg, "token": self.token, "success": self.success,
"auth_scheme": self.auth_scheme})
except Exception as err:
self.success = False
error_logger.exception(err)
self.msg = str(err)
return render(request, self.template_name,
{"form": form, "msg": self.msg, "token": self.token, "success": self.success,
"auth_scheme": self.auth_scheme})
def push_ussd(payload, request):
try:
host = request.get_host()
ws = create_connection(f"ws://{host}/ws/demo")
ws.send(json.dumps(payload))
ws.close()
return True
except Exception as err:
error_logger.exception(err)
return False
def clear_sessions(request):
try:
# delete all sessions
USSDSession.objects.all().delete()
response = dict(status="success")
return Response(response, status=200)
except Exception as error:
error_logger.exception(error)
response = dict(status="error", message=f"{str(error)}")
return Response(response, status=500)
def process_handler(self):
try:
# determine service_code
self.determine_service_code()
self.handler = Handler.objects.get(short_code=self.service_code)
request_format = self.handler.request_format
# use defined template
self.rapidpro_keys, self.handler_keys = separate_keys(
request_format)
# generate standard request_string to send to rapidPro
self.generate_standard_request()
# save contact if it doesn't exist
self.store_contact()
return self.standard_request
except Exception as err:
error_logger.exception(err)
def post(self, request):
access_logger.info(request.META)
try:
channels = USSDChannel.objects.all()
if len(channels) > 0:
channel = channels[0]
form = ChannelConfForm(request.POST, instance=channel)
else:
form = ChannelConfForm(request.POST)
if form.is_valid():
form.save()
self.msg = 'Channel configurations successfully saved.'
self.success = True
return redirect("/")
else:
self.msg = 'Form is not valid'
return render(request, self.template_name,
{"form": form, "msg": self.msg, "success": self.success, "hostname": self.hostname})
except Exception as err:
error_logger.exception(err)
def get(self, request, handler_id=None):
access_logger.info(str(request))
try:
if handler_id:
if Handler.objects.filter(id=handler_id).exists():
handler = Handler.objects.get(pk=handler_id)
self.aggregator = handler.aggregator
form = HandlerForm(instance=handler)
self.get_auth_token()
else:
form = HandlerForm()
redirect('add_handler', permanent=True)
else:
form = HandlerForm()
return render(request, self.template_name, {
"form": form,
"token": self.token
})
except Exception as err:
error_logger.exception(err)
def get(self, request, handler_id=None):
access_logger.info(str(request))
try:
if handler_id:
if Handler.objects.filter(id=handler_id).exists():
handler = Handler.objects.get(pk=handler_id)
self.callback_url = f"{handler.channel.send_url}/adaptor/call-back"
self.auth_scheme = handler.auth_scheme
self.aggregator = handler.aggregator
form = HandlerForm(instance=handler)
self.get_auth_token()
else:
form = HandlerForm()
redirect('add_handler', permanent=True)
else:
form = HandlerForm()
return render(request, self.template_name,
{"form": form, "token": self.token, "auth_scheme": self.auth_scheme,
"callback_url": self.callback_url})
except Exception as err:
error_logger.exception(err)
def process_handler(self):
try:
'''
Lets first run the clear_timedout_sessions(), to create a task that deletes timed-out sessions
'''
if PeriodicTask.objects.filter(
name="Clear_Timedout_sessions").exists():
pass
else:
# only if the task and its scheduler have not been create yet
clear_timedout_sessions()
# determine service_code
self.determine_service_code()
request_format = self.handler.request_format
# use defined template
self.rapidpro_keys, self.handler_keys = separate_keys(
request_format)
# generate standard request_string to send to rapidPro
self.generate_standard_request()
# save contact if it doesn't exist
self.store_contact()
return self.standard_request
except Exception as err:
error_logger.exception(err)
def call_back(request):
# CHECK METHOD USED
if request.META["REQUEST_METHOD"] == "GET":
data = request.GET
request_data = data.dict()
else:
request_data = request.data
try:
sr = ProcessAggregatorRequest(request_data)
standard_request_string = sr.process_handler()
current_session = sr.log_session()
is_new_session = sr.is_new_session
still_in_flow = sr.is_in_flow
handler = sr.get_handler
end_action = handler.signal_end_string
reply_action = handler.signal_reply_string
urn = standard_request_string['from']
channel = get_channel()
if channel is None:
raise Exception(
"Could not continue without a channel, configure one first and try again"
)
if is_new_session:
text = " " if still_in_flow else channel.trigger_word
else:
text = standard_request_string["text"]
allowed_urn = standard_urn(urn)
rapid_pro_request = {"from": allowed_urn, "text": text}
# create redis keys
key1 = f"MO_MT_KEY_{allowed_urn}"
r.set(key1, 1) # proven necessary or else
key2 = f"MSG_KEY_{allowed_urn}"
"""""Channel details """ ""
# receive_url is used to send msgs to rapidPro
receive_url = channel.rapidpro_receive_url
# req = requests.post(receive_url, json.dumps(rapid_pro_request), headers=HEADERS)
req = requests.post(receive_url, rapid_pro_request, headers=HEADERS)
if req.status_code == 200:
# increment key1
r.incr(key1)
r.expire(key1, 30) # expire key1 after 30s
data = r.blpop(key2, channel.timeout_after
) # wait for configured time for rapidPro instance
if data:
feedback = literal_eval(
data[1].decode("utf-8")) # from RapidPro
text = feedback[RP_RESPONSE_FORMAT['text']]
status = feedback[RP_RESPONSE_FORMAT['session_status']]
if status == RP_RESPONSE_STATUSES['waiting']:
action = reply_action
else:
# mark session complete and give it a green badge
changeSessionStatus(current_session,
SESSION_STATUSES['COMPLETED'],
'success')
action = end_action
new_format = dict(text=text, action=action)
response = sr.get_expected_response(new_format)
else:
# mark session timed out and give it a red badge
changeSessionStatus(current_session,
SESSION_STATUSES['TIMED_OUT'], 'danger')
error_logger.debug(f"Response timed out for redis key {key2}")
res_format = dict(text="Response timed out", action=end_action)
response = sr.get_expected_response(res_format)
else:
changeSessionStatus(current_session, SESSION_STATUSES['TIMED_OUT'],
'danger')
res_format = dict(text="External Application unreachable",
action=end_action)
error_logger.exception(req.content)
response = sr.get_expected_response(res_format)
return Response(response, status=200)
except Exception as err:
error_logger.exception(err)
response = {
"responseString": "External Application unreachable",
"action": "end"
}
return Response(response, status=500)
def process_request(self):
try:
current_session = self.request_factory.log_session()
is_new_session = self.request_factory.is_new_session
still_in_flow = self.request_factory.is_in_flow
handler = self.request_factory.get_handler
end_action = handler.signal_end_string
reply_action = handler.signal_reply_string
urn = self.standard_request_string['from']
channel = handler.channel
if is_new_session:
text = handler.repeat_trigger if still_in_flow else handler.trigger_word
else:
text = self.standard_request_string["text"].strip()
allowed_urn = standard_urn(urn, handler)
rapid_pro_request = {"from": allowed_urn, "text": text}
access_logger.info(
f"Is new session: {is_new_session}, Still in flow: {still_in_flow}"
)
access_logger.info(rapid_pro_request)
# create redis keys
key1 = f"MO_MT_KEY_{allowed_urn}"
r.set(key1, 1) # proven necessary or else
key2 = f"MSG_KEY_{allowed_urn}"
"""""Channel details """ ""
# receive_url is used to send msgs to rapidPro
receive_url = channel.rapidpro_receive_url
req = requests.post(receive_url,
rapid_pro_request,
headers=HEADERS)
if req.status_code == 200:
# increment key1
r.incr(key1)
r.expire(key1, 30) # expire key1 after 30s
data = r.blpop(
key2, channel.timeout_after
) # wait for configured time for rapidPro instance
if data:
feedback = literal_eval(
data[1].decode("utf-8")) # from RapidPro
text = feedback[RP_RESPONSE_FORMAT['text']]
status = feedback[RP_RESPONSE_FORMAT['session_status']]
access_logger.info(f"From redis key: {data}")
if status == RP_RESPONSE_STATUSES['waiting']:
action = reply_action
else:
# mark session complete and give it a green badge
changeSessionStatus(current_session,
SESSION_STATUSES['COMPLETED'],
'success')
action = end_action
new_format = dict(text=text, action=action)
response = self.request_factory.get_expected_response(
new_format)
else:
# mark session timed out and give it a red badge
changeSessionStatus(current_session,
SESSION_STATUSES['TIMED_OUT'],
'danger')
error_logger.debug(
f"Response timed out for redis key {key2}")
res_format = dict(text="Response timed out",
action=end_action)
'''
We need to delete this contact as it will delete-cascade(which ever way they say it) sessions attached to it.
Next time user comes back, they will submit a trigger word
'''
contact = Contact.objects.get(urn=urn)
contact.delete()
response = self.request_factory.get_expected_response(
res_format)
r.delete(key2) # lets delete the key
else:
changeSessionStatus(current_session,
SESSION_STATUSES['TIMED_OUT'], 'danger')
res_format = dict(text="External Application error",
action=end_action)
contact = Contact.objects.get(urn=urn)
contact.delete()
error_logger.exception(req.content)
response = self.request_factory.get_expected_response(
res_format)
return Response(response, status=200)
except Exception as err:
error_logger.exception(err)
response = {
"responseString": "External Application error",
"action": "end"
}
return Response(response, status=500)
