Adds notification stats update into the callback process

- when a provider callback occurs and we update the status of the notification, also update the statistics table

Adds:
- Mapping object to the clients to handle mapping to various states from the response codes, this replaces the map.
- query lookup in the DAO to get the query based on response type / template type

Tests around rest class and dao to check correct updating of stats

Missing:
- multiple client callbacks will keep incrementing the counts of success/failure. This edge case needs to be handle in a future story.

app/clients/__init__.py

@@ -13,6 +13,11 @@ class Client(object):
     pass
 
 
+STATISTICS_REQUESTED = 'requested'
+STATISTICS_DELIVERED = 'delivered'
+STATISTICS_FAILURE = 'failure'
+
+
 class ClientResponse:
     def __init__(self):
         self.__response_model__ = None
@@ -24,7 +29,6 @@ class ClientResponse:
         return self.response_code_to_object(response_code)['message']
 
     def response_code_to_notification_status(self, response_code):
-        print(response_code)
         return self.response_code_to_object(response_code)['notification_status']
 
     def response_code_to_notification_statistics_status(self, response_code):

app/clients/email/aws_ses.py

@@ -1,7 +1,7 @@
 import boto3
 from flask import current_app
 from monotonic import monotonic
-from app.clients import ClientResponse
+from app.clients import ClientResponse, STATISTICS_DELIVERED, STATISTICS_FAILURE
 from app.clients.email import (EmailClientException, EmailClient)
 
 
@@ -13,19 +13,19 @@ class AwsSesResponses(ClientResponse):
                 "message": 'Bounced',
                 "success": False,
                 "notification_status": 'bounce',
-                "notification_statistics_status": 'failed'
+                "notification_statistics_status": STATISTICS_FAILURE
             },
             'Delivery': {
                 "message": 'Delivered',
                 "success": True,
                 "notification_status": 'delivered',
-                "notification_statistics_status": 'delivered'
+                "notification_statistics_status": STATISTICS_DELIVERED
             },
             'Complaint': {
                 "message": 'Complaint',
                 "success": False,
                 "notification_status": 'complaint',
-                "notification_statistics_status": 'failed'
+                "notification_statistics_status": STATISTICS_FAILURE
             }
         }
 

app/clients/sms/firetext.py

@@ -6,7 +6,7 @@ from app.clients.sms import (
 )
 from flask import current_app
 from requests import request, RequestException, HTTPError
-from app.clients import ClientResponse
+from app.clients import ClientResponse, STATISTICS_DELIVERED, STATISTICS_FAILURE
 
 logger = logging.getLogger(__name__)
 
@@ -17,14 +17,14 @@ class FiretextResponses(ClientResponse):
         self.__response_model__ = {
             '0': {
                 "message": 'Delivered',
-                "notification_statistics_status": 'delivered',
+                "notification_statistics_status": STATISTICS_DELIVERED,
                 "success": True,
                 "notification_status": 'delivered'
             },
             '1': {
                 "message": 'Declined',
                 "success": False,
-                "notification_statistics_status": 'failed',
+                "notification_statistics_status": STATISTICS_FAILURE,
                 "notification_status": 'failed'
             },
             '2': {