Remove system check for ENKETO_REDIS_MAIN_URL

kobo/apps/__init__.py

@@ -2,7 +2,6 @@
 from django.apps import AppConfig
 from django.core.checks import register, Tags
 
-from kpi.utils.system_check import required_env_vars_check
 from kpi.utils.two_database_configuration_checker import \
     TwoDatabaseConfigurationChecker
 
@@ -19,4 +18,3 @@ def ready(self, *args, **kwargs):
 
 
 register(TwoDatabaseConfigurationChecker().as_check(), Tags.database)
-register(required_env_vars_check, Tags.compatibility)

kobo/apps/service_health/views.py

@@ -4,7 +4,7 @@
 
 import requests
 from django.conf import settings
-from django.core.cache import cache
+from django.core.cache import cache, caches
 from django.http import HttpResponse
 
 from kobo.celery import celery_app
@@ -75,6 +75,7 @@ def service_health(request):
         'Enketo': lambda: requests.get(
             settings.ENKETO_INTERNAL_URL, timeout=10
         ).raise_for_status(),
+        'Enketo Redis (main)': lambda: caches['enketo_redis_main'].set('a', True, 1),
     }
 
     check_results = []

kobo/settings/base.py

@@ -8,13 +8,13 @@
 from urllib.parse import quote_plus
 
 import django.conf.locale
+import environ
 from celery.schedules import crontab
 from django.conf.global_settings import LOGIN_URL
 from django.urls import reverse_lazy
 from django.utils.translation import get_language_info, gettext_lazy as t
 from pymongo import MongoClient
 
-import kpi.utils.environ as environ
 from kpi.utils.json import LazyJSONSerializable
 from kobo.apps.stripe.constants import FREE_TIER_NO_THRESHOLDS, FREE_TIER_EMPTY_DISPLAY
 from ..static_lists import EXTRA_LANG_INFO, SECTOR_CHOICE_DEFAULTS
@@ -1302,7 +1302,9 @@ def dj_stripe_request_callback_method():
 CACHES = {
     # Set CACHE_URL to override
     'default': env.cache_url(default='redis://redis_cache:6380/3'),
-    'enketo_redis_main': env.lazy_cache_url('ENKETO_REDIS_MAIN_URL')
+    'enketo_redis_main': env.cache_url(
+        'ENKETO_REDIS_MAIN_URI', default='redis://change-me.invalid/0'
+    ),
 }
 
 # How long to retain cached responses for kpi endpoints
@@ -1404,6 +1406,3 @@ def dj_stripe_request_callback_method():
         'NAME': 'kpi.password_validation.MostRecentPasswordValidator',
     },
 ]
-
-# Keep at the end of file to be sure all required env variables are registered
-ENVIRONMENT_VARIABLES_TO_CHECK = env.lazy_env_vars