_moduleLogger = logging.getLogger("handle")
-class MetaMemoize(type):
- """
- Allows a class to cache off instances for reuse
- """
-
- def __call__(cls, connection, *args):
- obj, newlyCreated = cls.__new__(cls, connection, *args)
- if newlyCreated:
- obj.__init__(connection, connection.get_handle_id(), *args)
- _moduleLogger.info("New Handle %r" % obj)
- return obj
-
-
class TheOneRingHandle(telepathy.server.Handle):
"""
Instances are memoized
"""
- __metaclass__ = MetaMemoize
-
- _instances = weakref.WeakValueDictionary()
-
- def __new__(cls, connection, *args):
- key = cls, connection.username, args
- if key in cls._instances.keys():
- return cls._instances[key], False
- else:
- instance = object.__new__(cls, connection, *args)
- cls._instances[key] = instance # TRICKY: instances is a weakdict
- return instance, True
-
def __init__(self, connection, id, handleType, name):
telepathy.server.Handle.__init__(self, id, handleType, name)
self._conn = weakref.proxy(connection)
class ConnectionHandle(TheOneRingHandle):
- instance = None
-
def __init__(self, connection, id):
handleType = telepathy.HANDLE_TYPE_CONTACT
handleName = connection.username
}
-def create_handle(connection, type, *args):
- handle = _HANDLE_TYPE_MAPPING[type](connection, *args)
- connection._handles[handle.get_type(), handle.get_id()] = handle
- return handle
+def create_handle_factory():
+
+ cache = weakref.WeakValueDictionary()
+
+ def create_handle(connection, type, *args):
+ Handle = _HANDLE_TYPE_MAPPING[type]
+ key = Handle, connection.username, args
+ try:
+ handle = cache[key]
+ isNewHandle = False
+ except KeyError:
+ handle = Handle(connection, connection.get_handle_id(), *args)
+ cache[key] = handle
+ isNewHandle = True
+ connection._handles[handle.get_type(), handle.get_id()] = handle
+ handleStatus = "Is New!" if isNewHandle else "From Cache"
+ _moduleLogger.info("Created Handle: %r (%s)" % (handle, handleStatus))
+ return handle
+
+ return create_handle
+
+
+create_handle = create_handle_factory()