I am running simple_switch.py in ryu/app/ folder with slight modification
and the output is given below.(The first occourance of output has been
expanded to make it more readable.) I want to make the contents of sw_list
and link_list more "human readable".Is there some nice display function
that is already implemented that I can use? Or if not how do I implement
it?
The change I have made to simple_switch.py (I have added the four lines
shown in red to packet-in handler to simple switch.
@set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)
def _packet_in_handler(self, ev):
sw_list = ryu.topology.api.get_all_switch(self)
print('sw_list {}'.format(sw_list))
link_list = ryu.topology.api.get_all_link(self)
print('link_list {}'.format(link_list))
msg = ev.msg
datapath = msg.datapath
ofproto = datapath.ofproto
sudo ryu-manager --observe-links ryu/app/simple_switch.py
loading app ryu/app/simple_switch.py
loading app ryu.topology.switches
loading app ryu.controller.ofp_handler
loading app ryu.controller.ofp_handler
instantiating app ryu.topology.switches of Switches
instantiating app ryu.controller.ofp_handler of OFPHandler
instantiating app ryu/app/simple_switch.py of SimpleSwitch
sw_list [<ryu.topology.switches.Switch object at 0x1be9510>,
<ryu.topology.switches.Switch object at 0x1be97d0>,
<ryu.topology.switches.Switch object at 0x1be92d0>,
<ryu.topology.switches.Switch object at 0x1be9050>,
<ryu.topology.switches.Switch object at 0x1be9150>,
<ryu.topology.switches.Switch object at 0x1be9590>]
link_list { <ryu.topology.switches.Link object at 0x1be38d0>:
1397547974.976759,
<ryu.topology.switches.Link object at 0x1be3650>:
1397547974.658834,
<ryu.topology.switches.Link object at 0x1be3790>:
1397547975.459913,
<ryu.topology.switches.Link object at 0x1be3fd0>:
1397547974.865703,
<ryu.topology.switches.Link object at 0x1be3810>:
1397547974.91675,
<ryu.topology.switches.Link object at 0x1be37d0>:
1397547975.308176
}
packet in 514 1e:24:a3:bc:08:7e 01:80:c2:00:00:0e 2
sw_list [<ryu.topology.switches.Switch object at 0x1be94d0>,
<ryu.topology.switches.Switch object at 0x1be93d0>,
<ryu.topology.switches.Switch object at 0x1be9350>,
<ryu.topology.switches.Switch object at 0x1be9890>,
<ryu.topology.switches.Switch object at 0x1be9510>,
<ryu.topology.switches.Switch object at 0x1be97d0>]
link_list {<ryu.topology.switches.Link object at 0x1be38d0>:
1397547974.976759, <ryu.topology.switches.Link object at 0x1be3650>:
1397547975.565508, <ryu.topology.switches.Link object at 0x1be3790>:
1397547975.459913, <ryu.topology.switches.Link object at 0x1be3fd0>:
1397547974.865703, <ryu.topology.switches.Link object at 0x1be3810>:
1397547974.91675, <ryu.topology.switches.Link object at 0x1be37d0>:
1397547975.308176}
packet in 516 9e:41:4c:a8:9b:20 01:80:c2:00:00:0e 2
Thanks & Regards,
Karthik.
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