old_contents: from __future__ import absolute_import
  from corehq.apps.sms.views import IncomingBackendView
  from corehq.messaging.smsbackends.start_enterprise.models import (
      StartEnterpriseBackend,
      StartEnterpriseDeliveryReceipt,
  )
  from datetime import datetime
  from django.http import HttpResponse, HttpResponseBadRequest
  
  
  class StartEnterpriseDeliveryReceiptView(IncomingBackendView):
      urlname = 'start_enterprise_dlr'
  
      @property
      def backend_class(self):
          return StartEnterpriseBackend
  
      def get(self, request, api_key, *args, **kwargs):
          message_id = request.GET.get('msgid')
  
          if not message_id:
              return HttpResponseBadRequest("Missing 'msgid'")
  
          message_id = message_id.strip()
  
          try:
              dlr = StartEnterpriseDeliveryReceipt.objects.get(message_id=message_id)
          except StartEnterpriseDeliveryReceipt.DoesNotExist:
              dlr = None
  
          if dlr:
              dlr.received_on = datetime.utcnow()
              dlr.info = request.GET.dict()
              dlr.save()
  
          # Based on the documentation, a response of "1" acknowledges receipt of the DLR
          return HttpResponse("1")
  
new_contents: from __future__ import absolute_import
  import logging
  from corehq.apps.sms.views import IncomingBackendView
  from corehq.messaging.smsbackends.start_enterprise.models import (
      StartEnterpriseBackend,
      StartEnterpriseDeliveryReceipt,
  )
  from datetime import datetime
  from django.http import HttpResponse, HttpResponseBadRequest
  
  
  class StartEnterpriseDeliveryReceiptView(IncomingBackendView):
      urlname = 'start_enterprise_dlr'
  
      @property
      def backend_class(self):
          return StartEnterpriseBackend
  
      def get(self, request, api_key, *args, **kwargs):
          logging.info("Received Start Enterprise delivery receipt with items: %s" % request.GET.dict().keys())
  
          message_id = request.GET.get('msgid')
  
          if not message_id:
              return HttpResponseBadRequest("Missing 'msgid'")
  
          message_id = message_id.strip()
  
          try:
              dlr = StartEnterpriseDeliveryReceipt.objects.get(message_id=message_id)
          except StartEnterpriseDeliveryReceipt.DoesNotExist:
              dlr = None
  
          if dlr:
              dlr.received_on = datetime.utcnow()
              dlr.info = request.GET.dict()
              dlr.save()
  
          # Based on the documentation, a response of "1" acknowledges receipt of the DLR
          return HttpResponse("1")
  
subject: Add logging to delivery receipt view