Temporary backup from J621 porting

nonpacks/common/middleware.py

@@ -0,0 +1,10 @@
+import time
+
+class TimingMiddleware:
+    def __init__(self, get_response):
+        self.get_response = get_response
+
+    def __call__(self, request):
+        request._start_time = time.time()
+        response = self.get_response(request)
+        return response