Add simple root page

fixes #54

mittaridatapumppu-deviceregistry/deviceregistry/urls.py

@@ -29,6 +29,7 @@
     DeviceTypeViewSet,
     MaintenanceLogViewSet,
     OrganizationViewSet,
+    index,
 )
 from endpoints.views import HostViewSet, EndpointViewSet
 
@@ -51,6 +52,7 @@
     path("admin/", admin.site.urls),
     path("api/v1/", include(router.urls)),
     path("api-auth/", include("rest_framework.urls", namespace="rest_framework")),
+    path("", index, name="index"),
 ]
 
 # if settings.DEBUG:

mittaridatapumppu-deviceregistry/devices/views.py

@@ -1,4 +1,7 @@
+import datetime
+
 from django.contrib.auth.models import User
+from django.http import JsonResponse
 from rest_framework import permissions
 from rest_framework import viewsets
 from rest_framework.authentication import (
@@ -30,6 +33,15 @@
 )
 
 
+def index(request):
+    """
+    Return a simple JSON response with the current time.
+    """
+    now = datetime.datetime.now(datetime.timezone.utc)
+    ok_msg = {"status": "ok", "time": now.isoformat()}
+    return JsonResponse(ok_msg, status=200)
+
+
 class UserViewSet(viewsets.ReadOnlyModelViewSet):
     """
     API endpoint that allows users to be viewed or edited.