Middleware file

ecommerce/request_cache/middleware.py

+import threading
+
+
+class _RequestCache(threading.local):
+    """
+    A thread-local for storing the per-request cache.
+    """
+    def __init__(self):
+        super(_RequestCache, self).__init__()
+        self.data = {}
+        self.request = None
+
+
+REQUEST_CACHE = _RequestCache()
+
+
+class RequestCache(object):
+    @classmethod
+    def get_request_cache(cls, name=None):
+        """
+        This method is deprecated. Please use :func:`request_cache.get_cache`.
+        """
+        if name is None:
+            return REQUEST_CACHE
+        else:
+            return REQUEST_CACHE.data.setdefault(name, {})
+
+    @classmethod
+    def get_current_request(cls):
+        """
+        This method is deprecated. Please use :func:`request_cache.get_request`.
+        """
+        return REQUEST_CACHE.request
+
+    @classmethod
+    def clear_request_cache(cls):
+        """
+        Empty the request cache.
+        """
+        REQUEST_CACHE.data = {}
+        REQUEST_CACHE.request = None
+
+    def process_request(self, request):
+        self.clear_request_cache()
+        REQUEST_CACHE.request = request
+        return None
+
+    def process_response(self, request, response):
+        self.clear_request_cache()
+        return response
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