Implement basic metrics

shiftregister/metrics/admin.py

@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.

shiftregister/metrics/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class MetricsConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "shiftregister.metrics"

shiftregister/metrics/models.py

@@ -0,0 +1,3 @@
+from django.db import models
+
+# Create your models here.

shiftregister/metrics/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

shiftregister/metrics/urls.py

@@ -0,0 +1,7 @@
+from django.urls import path
+
+from . import views
+
+urlpatterns = [
+    path("", views.metrics, name="metrics"),
+]

shiftregister/metrics/views.py

@@ -0,0 +1,12 @@
+from django.http import HttpResponse
+from shiftregister.app.models import Helper
+
+
+def metrics(request):
+    response = HttpResponse("\n".join((f"shiftregister_{name} {value}" for name, value in (
+        ("helpers_total", Helper.objects.count()),
+        ("helpers_confirmed_total", Helper.objects.filter(number_validated=True).count()),
+    ))))
+    response.headers["Content-Type"] = "text/plain"
+
+    return response

shiftregister/settings.py

@@ -43,6 +43,7 @@ INSTALLED_APPS = [
     "shiftregister.importer.apps.ImporterConfig",
     "shiftregister.team.apps.TeamConfig",
     "shiftregister.pages.apps.PagesConfig",
+    "shiftregister.metrics.apps.MetricsConfig",
     "django.contrib.admin",
     "django.contrib.auth",
     "django.contrib.contenttypes",

shiftregister/urls.py

@@ -21,4 +21,5 @@ urlpatterns = [
     path("team/", include("shiftregister.team.urls")),
     path("admin/", admin.site.urls),
     path("p/", include("shiftregister.pages.urls")),
+    path("metrics/", include("shiftregister.metrics.urls")),
 ]