Re: [rpyc] weakly-referenced object no longer exists

[Tomer Filiba]

you lose the connection: netrefs hold a weakref to their connection, so they won't keep it alive unnecessarily.

in your class, you create a new connection each time, which terminates as soon as the function returns.

it's a bad idea to create many connections anyway. instead, create a single, global connection, and it will work.

e.g.,

g_conn = rpyc.classic.connect("localhost")

class WrapperClass:

    def __new__(cls, *args, **kwargs):

         return g_conn.modules[mypath.mymodule.MyClass'].MyClass()

btw, it seems your WrapperClass can be just turned into a function. 

be sure to watch http://www.youtube.com/watch?v=o9pEzgHorH0 - he raises some good points there

hope this solves you issue,

-tomer

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Tomer Filiba  tomerfiliba.com

On Tue, Apr 30, 2013 at 12:24 PM, Prashant Shewale <pvsh...@gmail.com> wrote:

Hi,

     I am quite new to using RPyC. For my test framework I am trying to create a generic local wrapper class which will actually return me netref class instance of remote machine. For this I am trying to override __new__ method of my wrapper class. What I am trying is as below (in code below I have hardcoded things, but eventually I want to generalize it using parameters)

import rpyc

class WrapperClass:

    def __new__(cls, *args, **kwargs):

         conn = rpyc.classic.connect('localhost')

         _new_instance = conn.modules[mypath.mymodule.MyClass'].MyClass()

         return _new_instance

But I use this wrapper class, I can create netref instace of MyClass, but if I call __dir__ on that to list attributes, it gives me error like ReferenceError: weakly-referenced object no longer exists

Can somebody please let me know what is going wrong.

Thanks,

Prashant

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[Prashant Shewale]

Thanks for quick reply. Global connection worked great.

[Artem Chekunov]

Hi,

i have a similar problem

but i can't use global connection, because i need keep several connection in one time

could do you say me, how to should i create connection for each thread?