Hi Kobayashi-San,

This UserWarning will occur with all RyuApps which access Datapath.ports member.

With this patch, UserWarning will be supressed in ryu.topology module,
but it still occurs in other RyuApps (e.g. DPSet).

Can we solve this problem fundamentally?
(not by using UserWarning)

Thanks,
Iwase


On 2016年01月13日 10:50, Satoshi KOBAYASHI wrote:
> Thank you. This is the patch.
> 
> On 2016/01/13 10:34
> 俊 赵 <[email protected]> wrote:
> 
>     Thanks.
> 
>     I can try the patch.
> 
>     And I also provide you with the details but I am not sure whether it 
> causes this.
> 
>     I want to use ryu.topology to find switches entering in the network. I am 
> using Open vSwitch 2.4.0.
> 
>     So I use the following code
> 
>     |from ryu.topology import api as topo_api from ryu.topology import event 
> as topo_event|
> 
> 
>     |@set_ev_cls(topo_event.EventSwitchEnter) def _switch_enter_handler(self, 
> ev): # self.datapath_ip = {} for sw in topo_api.get_all_switch(self): if 
> sw.dp.id == ev.switch.dp.id: console.info("enter a switch with attributes 
> datapath - "+str(sw.dp.id)+" and ip - "+sw.dp.socket.getpeername()[0])
>     |
> 
> 
>     Every time I start the app, it shows me that warning.
> 
>     Thank you!
> 
>     /Zhao Jun/
> 
>     
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>     Date: Wed, 13 Jan 2016 10:19:09 +0900
>     From: [email protected]
>     To: [email protected]; [email protected]
>     Subject: Re: [Ryu-devel] /ryu/topology/switches.py:545: UserWarning: 
> Datapath#ports
> 
>     Hi,
> 
>     The warning mean that Datapath#ports is not recommended to use directory.
>     But the warning should not be appear in this case.
>     Because perhaps you just use ryu.topology.
> 
>     I found out the code of the cause. This should be suppressed.
>     https://github.com/osrg/ryu/blob/v3.29/ryu/topology/switches.py#L545
> 
>     I can make a patch to resolve the issue but I don't know how to hit the 
> above line.
>     My environment don't show the warning. (Mininet w/ Open vSwitch)
>     Can you confirm the patch instead of me?
>     Or please give me more details. (e.g. product name of your openflow 
> switch and your procedure)
> 
>     Regards,
>     Satoshi
> 
>     On 2016/01/12 14:30
>     俊 赵 <[email protected]> wrote:
> 
>         Hi,
> 
>         I got warning with 
> "/usr/local/lib/python2.7/dist-packages/ryu/topology/switches.py:545: 
> UserWarning: Datapath#ports is kept for compatibility with the previous 
> openflow versions (< 1.3). This not be updated by EventOFPPortStatus message. 
> If you want to be updated, you can use 'ryu.controller.dpset' or 
> 'ryu.topology.switches'.
> 
>           for port in dp.ports.values():"
> 
>         I found this message coming from /ryu/controller/controller.py
> 
>         The constraint causing this is "ofproto.OFP_VERSION >= 0x04"
> 
>         Does it mean that if I am using openflow 1.3, the warning message 
> will trigger all the time?
> 
>         How can I get rid of this?
> 
>         Thanks.
> 
> 
>         /Zhao Jun/
> 
> 
> 
> 
>     
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> 
> -- 
> Satoshi KOBAYASHI
> 
> 
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