add 'cache' property

tiramisu/storage/cache.py

@@ -27,34 +27,33 @@ class Cache(object):
         self._cache = {}
         self.storage = storage
 
-    def setcache(self, cache_type, path, val, time):
+    def setcache(self, path, val, time):
         self._cache[path] = (val, time)
 
-    def getcache(self, cache_type, path, exp):
+    def getcache(self, path, exp):
         value, created = self._cache[path]
-        if exp < created:
+        if exp <= created:
             return True, value
         return False, None
 
-    def hascache(self, cache_type, path):
+    def hascache(self, path):
         """ path is in the cache
 
-        :param cache_type: value | property
         :param path: the path's option
         """
         return path in self._cache
 
-    def reset_expired_cache(self, cache_type, exp):
+    def reset_expired_cache(self, exp):
         for key in tuple(self._cache.keys()):
             val, created = self._cache[key]
-            if exp > created:
+            if created is not None and exp > created:
                 del(self._cache[key])
 
-    def reset_all_cache(self, cache_type):
+    def reset_all_cache(self):
         "empty the cache"
         self._cache.clear()
 
-    def get_cached(self, cache_type, context):
+    def get_cached(self, context):
         """return all values in a dictionary
         example: {'path1': ('value1', 'time1'), 'path2': ('value2', 'time2')}
         """