initial commit

gluon/contrib/gae_memcache.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Developed by Robin Bhattacharyya (memecache for GAE)
+Released under the web2py license (LGPL)
+
+from gluon.contrib.gae_memcache import MemcacheClient
+cache.ram=cache.disk=MemcacheClient(request)
+"""
+
+import time
+from google.appengine.api.memcache import Client
+
+
+class MemcacheClient(Client):
+
+    def __init__(self, request):
+        self.request = request
+        Client.__init__(self)
+
+    def __call__(
+        self,
+        key,
+        f,
+        time_expire=300,
+        ):
+        key = '%s/%s' % (self.request.application, key)
+        dt = time_expire
+        value = None
+        obj = self.get(key)
+        if obj and (dt == None or obj[0] > time.time() - dt):
+            value = obj[1]
+        elif f is None:
+            if obj:
+                self.delete(key)
+        else:
+            value = f()
+            self.set(key, (time.time(), value))
+        return value
+
+    def increment(self, key, value=1):
+        key = '%s/%s' % (self.request.application, key)
+        obj = self.get(key)
+        if obj:
+            value = obj[1] + value
+        self.set((time.time(), value))
+        return value
+
+    def clear(self, key):
+        key = '%s/%s' % (self.request.application, key)
+        self.delete(key)
+