I am trying to access the port_no field of an ofp_port_stats reply
object. printing the object suggests that it is an ofp_port_stats
object, but trying to access its port_no field results in an
AttributeError: 'list' object has no attribute 'port_no'. How do I
access its port_no and other fields?
[16:24:42] erinacity:~/Code/pox
alisonc $ ./pox.py openflow.of_01 py
[snip startup crap]
POX> import pox.openflow.libopenflow_01 as of
POX>
POX> def handle_port_stats(event):
... print event.stats
... print event.stats.port_no
...
POX> core.openflow.addListenerByName("PortStatsReceived", handle_port_stats)
(<class 'pox.openflow.PortStatsReceived'>, 14)
POX>
core.openflow.connections[1].send(of.ofp_stats_request(body=of.ofp_port_stats_request(port_no=of.OFPP_NONE)))
POX> [<pox.openflow.libopenflow_01.ofp_port_stats object at
0x2a57ad0>, <pox.openflow.libopenflow_01.ofp_port_stats object at
0x2a57a10>, <pox.openflow.libopenflow_01.ofp_port_stats object at
0x2a57b50>]
ERROR:core:Exception while handling OpenFlowNexus!PortStatsReceived...
Traceback (most recent call last):
File "/home/alisonc/Code/pox/pox/lib/revent/revent.py", line 231, in
raiseEventNoErrors
return self.raiseEvent(event, *args, **kw)
File "/home/alisonc/Code/pox/pox/lib/revent/revent.py", line 278, in
raiseEvent
rv = event._invoke(handler, *args, **kw)
File "/home/alisonc/Code/pox/pox/lib/revent/revent.py", line 156, in _invoke
return handler(self, *args, **kw)
File "<console>", line 3, in handle_port_stats
AttributeError: 'list' object has no attribute 'port_no'
Cheers,
--
Alison Chan
chan7...@kettering.edu
SMS: +1 909 278 7753
Fax: +1 206 203 2793
