From 48912bdf55a2b9a71452d000b62db41cbce4a0e1 Mon Sep 17 00:00:00 2001
From: Raphael Michel <mail@raphaelmichel.de>
Date: Sat, 25 Mar 2017 22:21:07 +0100
Subject: [PATCH] Healthcheck: Check redis and cache

---
 src/pretix/base/views/health.py | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/pretix/base/views/health.py b/src/pretix/base/views/health.py
index c6cf152157..c3b7f5d0d8 100644
--- a/src/pretix/base/views/health.py
+++ b/src/pretix/base/views/health.py
@@ -1,3 +1,5 @@
+from django.conf import settings
+from django.core import cache
 from django.http import HttpResponse
 
 from ..models import User
@@ -6,4 +8,18 @@ from ..models import User
 def healthcheck(request):
     # Perform a simple DB query to see that DB access works
     User.objects.exists()
+
+    # Test if redis access works
+    if settings.HAS_REDIS:
+        import django_redis
+
+        redis = django_redis.get_redis_connection("redis")
+        redis.set("_healthcheck", 1)
+        if not redis.exists("_healthcheck"):
+            return HttpResponse("Redis not available.", status=503)
+
+    cache.cache.set("_healthcheck", "1")
+    if not cache.cache.get("_healthcheck") == "1":
+        return HttpResponse("Cache not available.", status=503)
+
     return HttpResponse()