Add support for exporting prometheus metrics

Author: jelly

requirements.txt

@@ -16,3 +16,4 @@ bleach==6.0.0
 requests==2.32.0
 xtarfile==0.1.0
 zstandard==0.17.0
+django-prometheus==2.3.1

settings.py

@@ -6,6 +6,9 @@
 DEBUG = False
 DEBUG_TOOLBAR = False
 
+# Export prometheus metrics
+PROMETHEUS_METRICS = False
+
 # Notification admins
 ADMINS = ()
 
@@ -265,4 +268,9 @@
 
     INSTALLED_APPS = [*list(INSTALLED_APPS), 'debug_toolbar']
 
+if PROMETHEUS_METRICS:
+    MIDDLEWARE = ['django_prometheus.middleware.PrometheusBeforeMiddleware', *list(MIDDLEWARE), 'django_prometheus.middleware.PrometheusAfterMiddleware']
+
+    INSTALLED_APPS = [*list(INSTALLED_APPS), 'django_prometheus']
+
 # vim: set ts=4 sw=4 et:

urls.py

@@ -114,6 +114,12 @@
         path('__debug__/', include(debug_toolbar.urls)),
     ])
 
+# prometheus metrics
+if settings.PROMETHEUS_METRICS:  # pragma :no cover
+    urlpatterns.extend([
+        path('', include('django_prometheus.urls')),
+    ])
+
 
 # displays all archweb urls
 def show_urls(urllist=urlpatterns, depth=0):  # pragma: no cover