fix message ratio endpoint

app/dao/notifications_dao.py

@@ -279,6 +279,44 @@ def dao_get_notification_count_for_service(*, service_id):
     return db.session.execute(stmt).scalar()
 
 
+def dao_get_notification_count_for_service_message_ratio(service_id, current_year):
+    start_date = datetime(current_year, 1, 1)
+    end_date = datetime(current_year + 1, 1, 1)
+    stmt1 = (
+        select(func.count())
+        .select_from(Notification)
+        .where(
+            Notification.service_id == service_id,
+            Notification.status
+            not in [
+                NotificationStatus.CANCELLED,
+                NotificationStatus.CREATED,
+                NotificationStatus.SENDING,
+            ],
+            Notification.created_at >= start_date,
+            Notification.created_at < end_date,
+        )
+    )
+    stmt2 = (
+        select(func.count())
+        .select_from(NotificationHistory)
+        .where(
+            NotificationHistory.service_id == service_id,
+            NotificationHistory.status
+            not in [
+                NotificationStatus.CANCELLED,
+                NotificationStatus.CREATED,
+                NotificationStatus.SENDING,
+            ],
+            NotificationHistory.created_at >= start_date,
+            NotificationHistory.created_at < end_date,
+        )
+    )
+    recent_count = db.session.execute(stmt1).scalar_one()
+    old_count = db.session.execute(stmt2).scalar_one()
+    return recent_count + old_count
+
+
 def dao_get_failed_notification_count():
     stmt = select(func.count(Notification.id)).where(
         Notification.status == NotificationStatus.FAILED

app/service/rest.py

@@ -1,5 +1,6 @@
 import itertools
 from datetime import datetime, timedelta
+from zoneinfo import ZoneInfo
 
 from flask import Blueprint, current_app, jsonify, request
 from sqlalchemy import select
@@ -7,7 +8,7 @@ from sqlalchemy.exc import IntegrityError
 from sqlalchemy.orm.exc import NoResultFound
 from werkzeug.datastructures import MultiDict
 
-from app import db, redis_store
+from app import db
 from app.aws.s3 import get_personalisation_from_s3, get_phone_number_from_s3
 from app.config import QueueNames
 from app.dao import fact_notification_status_dao, notifications_dao
@@ -28,7 +29,10 @@ from app.dao.fact_notification_status_dao import (
     fetch_stats_for_all_services_by_date_range,
 )
 from app.dao.inbound_numbers_dao import dao_allocate_number_for_service
-from app.dao.notifications_dao import dao_get_notification_count_for_service
+from app.dao.notifications_dao import (
+    dao_get_notification_count_for_service,
+    dao_get_notification_count_for_service_message_ratio,
+)
 from app.dao.organization_dao import dao_get_organization_by_service_id
 from app.dao.service_data_retention_dao import (
     fetch_service_data_retention,
@@ -109,7 +113,6 @@ from app.service.service_senders_schema import (
 from app.service.utils import get_guest_list_objects
 from app.user.users_schema import post_set_permissions_schema
 from app.utils import get_prev_next_pagination_links, utc_now
-from notifications_utils.clients.redis import total_limit_cache_key
 
 service_blueprint = Blueprint("service", __name__)
 
@@ -1145,17 +1148,11 @@ def modify_service_data_retention(service_id, data_retention_id):
 def get_service_message_ratio():
     service_id = request.args.get("service_id")
 
+    current_year = datetime.datetime.now(tzinfo=ZoneInfo("UTC")).year
     my_service = dao_fetch_service_by_id(service_id)
-
+    messages_sent = dao_get_notification_count_for_service_message_ratio(
-    cache_key = total_limit_cache_key(service_id)
+        service_id, current_year
-    messages_sent = redis_store.get(cache_key)
-    if messages_sent is None:
-        messages_sent = 0
-        current_app.logger.warning(
-            f"Messages sent was not being tracked for service {service_id}"
     )
-    else:
-        messages_sent = int(messages_sent)
 
     return {
         "messages_sent": messages_sent,