Disable Redis for Staging added statsd for post methods

- Disable Redis as there is a current connection limit of 256 which
 could slow down the request if they are all used
 - Added statd to methods in the post to help spot any bottlenecks

app/config.py

@@ -388,6 +388,7 @@ class Staging(Config):
     FROM_NUMBER = 'stage'
     API_RATE_LIMIT_ENABLED = True
     CHECK_PROXY_HEADER = True
+    REDIS_ENABLED = False
 
     API_KEY_LIMITS = {
         KEY_TYPE_TEAM: {

app/notifications/process_notifications.py

@@ -13,6 +13,7 @@ from notifications_utils.recipients import (
 from app import redis_store
 from app.celery import provider_tasks
 from app.config import QueueNames
+
 from app.models import (
     EMAIL_TYPE,
     KEY_TYPE_TEST,
@@ -26,6 +27,8 @@ from app.dao.notifications_dao import (
     dao_delete_notifications_and_history_by_id,
     dao_created_scheduled_notification
 )
+
+from app.statsd_decorators import statsd
 from app.v2.errors import BadRequestError
 from app.utils import get_template_instance, cache_key_for_service_template_counter, convert_bst_to_utc
 
@@ -43,6 +46,7 @@ def check_placeholders(template_object):
         raise BadRequestError(fields=[{'template': message}], message=message)
 
 
+@statsd(namespace="performance-testing")
 def persist_notification(
     *,
     template_id,
@@ -112,6 +116,7 @@ def persist_notification(
     return notification
 
 
+@statsd(namespace="performance-testing")
 def send_notification_to_queue(notification, research_mode, queue=None):
     if research_mode or notification.key_type == KEY_TYPE_TEST:
         queue = QueueNames.RESEARCH_MODE

app/notifications/validators.py

@@ -14,6 +14,7 @@ from app.models import (
     KEY_TYPE_TEST, KEY_TYPE_TEAM, SCHEDULE_NOTIFICATIONS
 )
 from app.service.utils import service_allowed_to_send_to
+from app.statsd_decorators import statsd
 from app.v2.errors import TooManyRequestsError, BadRequestError, RateLimitError
 from app import redis_store
 from app.notifications.process_notifications import create_content_for_notification
@@ -46,6 +47,7 @@ def check_service_over_daily_message_limit(key_type, service):
             raise TooManyRequestsError(service.message_limit)
 
 
+@statsd(namespace="performance-testing")
 def check_rate_limiting(service, api_key):
     check_service_over_api_rate_limit(service, api_key)
     check_service_over_daily_message_limit(api_key.key_type, service)
@@ -80,12 +82,14 @@ def service_has_permission(notify_type, permissions):
     return notify_type in [p.permission for p in permissions]
 
 
+@statsd(namespace="performance-testing")
 def check_service_has_permission(notify_type, permissions):
     if not service_has_permission(notify_type, permissions):
         raise BadRequestError(message="Cannot send {}".format(
             get_public_notify_type_text(notify_type, plural=True)))
 
 
+@statsd(namespace="performance-testing")
 def check_service_can_schedule_notification(permissions, scheduled_for):
     if scheduled_for:
         if not service_has_permission(SCHEDULE_NOTIFICATIONS, permissions):
@@ -117,6 +121,7 @@ def check_sms_content_char_count(content_count):
         raise BadRequestError(message=message)
 
 
+@statsd(namespace="performance-testing")
 def validate_template(template_id, personalisation, service, notification_type):
     try:
         template = templates_dao.dao_get_template_by_id_and_service_id(

app/v2/notifications/create_response.py

@@ -1,3 +1,5 @@
+from app.statsd_decorators import statsd
+
 
 def create_post_sms_response_from_notification(notification, content, from_number, url_root, scheduled_for):
     noti = __create_notification_response(notification, url_root, scheduled_for)
@@ -8,6 +10,7 @@ def create_post_sms_response_from_notification(notification, content, from_numbe
     return noti
 
 
+@statsd(namespace="performance-testing")
 def create_post_email_response_from_notification(notification, content, subject, email_from, url_root, scheduled_for):
     noti = __create_notification_response(notification, url_root, scheduled_for)
     noti['content'] = {

app/v2/notifications/post_notifications.py

@@ -34,6 +34,7 @@ from app.notifications.validators import (
     check_service_sms_sender_id
 )
 from app.schema_validation import validate
+from app.statsd_decorators import statsd
 from app.v2.errors import BadRequestError
 from app.v2.notifications import v2_notification_blueprint
 from app.v2.notifications.notification_schemas import (
@@ -118,6 +119,7 @@ def post_notification(notification_type):
     return jsonify(resp), 201
 
 
+@statsd(namespace="performance-testing")
 def process_sms_or_email_notification(*, form, notification_type, api_key, template, service, reply_to_text=None):
     form_send_to = form['email_address'] if notification_type == EMAIL_TYPE else form['phone_number']
 
@@ -160,6 +162,7 @@ def process_sms_or_email_notification(*, form, notification_type, api_key, templ
     return notification
 
 
+@statsd(namespace="performance-testing")
 def process_letter_notification(*, letter_data, api_key, template):
     if api_key.key_type == KEY_TYPE_TEAM:
         raise BadRequestError(message='Cannot send letters with a team api key', status_code=403)
@@ -187,6 +190,7 @@ def process_letter_notification(*, letter_data, api_key, template):
     return notification
 
 
+@statsd(namespace="performance-testing")
 def get_reply_to_text(notification_type, form):
     reply_to = None
     if notification_type == EMAIL_TYPE: