AttributeError: '********' object has no attribute '*******'

[s-nt-s]

I have this code:

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import logging
import os
import sys
import rpyc
from rpyc.utils.server import ThreadedServer

import MyBot

class XmppService(rpyc.Service):
    def on_connect(self):
        # code that runs when a connection is created
        # (to init the serivce, if needed)
        pass

    def on_disconnect(self):
        # code that runs when the connection has already closed
        # (to finalize the service, if needed)
        pass

    def exposed_send_mensage(self, msg, to=None):
        self.exposed_bot.write_message(msg, to)

    def exposed_login(self):
        self.exposed_bot = MyBot.MyBot()
        self.exposed_bot.run()

if __name__ == "__main__":
    if len(sys.argv)>1:
        if sys.argv[1]=="login":
            c = rpyc.connect("localhost", 18861)
            c.root.login()
        else:
            c = rpyc.connect("localhost", 18861)
            c.root.send_mensage(" ".join(sys.argv[1:]))
    else:
        t = ThreadedServer(XmppService, port = 18861)
        t.start()

then:

• I run python xmppservice.py and it is ok
• I run python xmppservice.py login and it is ok
• I run python xmppservice.py bla bla bla bla and then:

$ python xmppservice.py bla bla bla bla
Traceback (most recent call last):
  File "xmppservice.py", line 38, in <module>
    c.root.send_mensage(" ".join(sys.argv[1:]))
  File "/usr/local/lib/python2.7/dist-packages/rpyc/core/netref.py", line 196, in __call__
    return syncreq(_self, consts.HANDLE_CALL, args, kwargs)
  File "/usr/local/lib/python2.7/dist-packages/rpyc/core/netref.py", line 71, in syncreq
    return conn.sync_request(handler, oid, *args)
  File "/usr/local/lib/python2.7/dist-packages/rpyc/core/protocol.py", line 441, in sync_request
    raise obj
AttributeError: 'XmppService' object has no attribute 'exposed_bot'

========= Remote Traceback (1) =========
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/rpyc/core/protocol.py", line 305, in _dispatch_request
    res = self._HANDLERS[handler](self, *args)
  File "/usr/local/lib/python2.7/dist-packages/rpyc/core/protocol.py", line 535, in _handle_call
    return self._local_objects[oid](*args, **dict(kwargs))
  File "xmppservice.py", line 25, in exposed_send_mensage
    self.exposed_bot.write_message(msg, to)
AttributeError: 'XmppService' object has no attribute 'exposed_bot'

And in the server side:

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/rpyc/core/protocol.py", line 305, in _dispatch_request
    res = self._HANDLERS[handler](self, *args)
  File "/usr/local/lib/python2.7/dist-packages/rpyc/core/protocol.py", line 535, in _handle_call
    return self._local_objects[oid](*args, **dict(kwargs))
  File "xmppservice.py", line 25, in exposed_send_mensage
    self.exposed_bot.write_message(msg, to)
AttributeError: 'XmppService' object has no attribute 'exposed_bot'

[aplicacionamedida]

Hi ,
I am not sure whether this is a bug. It seems that different connections have different namespaces. I tried this code and it works:

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import logging
import os
import sys
import rpyc
from rpyc.utils.server import ThreadedServer

class MyBot(object):
    def run(self):
        print "running..."

    def write_message(self, msg, to):
        print "message to %s: %s"%(to, msg)

class XmppService(rpyc.Service):
    def on_connect(self):
        # code that runs when a connection is created
        # (to init the serivce, if needed)
        pass

    def on_disconnect(self):
        # code that runs when the connection has already closed
        # (to finalize the service, if needed)
        pass

    def exposed_send_mensage(self, msg, to=None):
        self.exposed_bot.write_message(msg, to)

    def exposed_login(self):
        self.exposed_bot = MyBot()
        self.exposed_bot.run()

if __name__ == "__main__":
    if len(sys.argv)>1:
        c = rpyc.connect("localhost", 18861)
        c.root.login()
        c.root.send_mensage(" ".join(sys.argv[2:]), sys.argv[1])
    else:
        t = ThreadedServer(XmppService, port = 18861)
        t.start()

I run this:

python xmppservice.py user bla bla bla

and I get this result:

running...
message to user: bla bla bla

[s-nt-s]

Yes. That works because you do login and send message in the same execution, but what I was searching is a way to send a message using a previous connection. My final goal is to have a bot xmpp always connected as a daemon and that other script can ask it to send messages using the connection already open whiteout needing to do login again.

[aplicacionamedida]

You can do something like this (bot is now a global variable):

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import logging
import os
import sys
import rpyc
from rpyc.utils.server import ThreadedServer

class MyBot(object):
    def run(self):
        print "running..."

    def write_message(self, msg, to):
        print "message to %s: %s"%(to, msg)

class XmppService(rpyc.Service):
    def on_connect(self):
        # code that runs when a connection is created
        # (to init the serivce, if needed)
        pass

    def on_disconnect(self):
        # code that runs when the connection has already closed
        # (to finalize the service, if needed)
        pass

    def exposed_send_mensage(self, msg, to=None):
        bot.write_message(msg, to)

if __name__ == "__main__":
    if len(sys.argv)>1:
        c = rpyc.connect("localhost", 18861)
        c.root.send_mensage(" ".join(sys.argv[2:]), sys.argv[1])
    else:
        bot = MyBot()
        bot.run()
        t = ThreadedServer(XmppService, port = 18861)
        t.start()

[aplicacionamedida]

I think that another possibility is to create a custom service sharing the namespace to all connections.

I have an example in this recipe:
https://code.activestate.com/recipes/580721-tkinter-remote-debugging/

[s-nt-s]

with bot as a global variable I get this:

Traceback (most recent call last):
  File "xmppservice2.py", line 32, in <module>
    c.root.send_mensage(" ".join(sys.argv[1:]))
  File "/usr/local/lib/python2.7/dist-packages/rpyc/core/netref.py", line 196, in __call__
    return syncreq(_self, consts.HANDLE_CALL, args, kwargs)
  File "/usr/local/lib/python2.7/dist-packages/rpyc/core/netref.py", line 71, in syncreq
    return conn.sync_request(handler, oid, *args)
  File "/usr/local/lib/python2.7/dist-packages/rpyc/core/protocol.py", line 441, in sync_request
    raise obj
NameError: global name 'bot' is not defined

========= Remote Traceback (1) =========
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/rpyc/core/protocol.py", line 305, in _dispatch_request
    res = self._HANDLERS[handler](self, *args)
  File "/usr/local/lib/python2.7/dist-packages/rpyc/core/protocol.py", line 535, in _handle_call
    return self._local_objects[oid](*args, **dict(kwargs))
  File "xmppservice2.py", line 23, in exposed_send_mensage
    bot.write_message(msg, to)
NameError: global name 'bot' is not defined

MyBot came from https://github.com/s-nt-s/XmppBot and the run method came from https://github.com/s-nt-s/XmppBot/blob/master/xmppbot.py#L155
maybe the problem is run method not finish?

[coldfix]

As noted by @aplicacionamedida, this is not a bug. Each connection creates an independent service object. This fact is now documented in the tutorial.

Regarding your last post: Since you didn't show your code, I can only guess you didn't explicitly set global bot before setting bot = ... in the login method.

[coldfix]

Note that in the next release (3.5) it will be possible to share the same service object for multiple connections by passing in a fully constructed service instance as the service argument.