Hi Pradeep,
pytopology has a method get_outlinks thats takes a source datapathid
and destination datapathid, and returns a list of all of the port
pairs that are connected. This is defined in pytopology.i
For example:
if datapath 1's ports 5 and 6 are connected to datapath 2's ports 3
and 4 respectively, you would have the following.
from nox.lib.netinet.netinet import create_datapathid_from_host
dp1 = create_datapathid_from_host(1)
dp2 = create_datapathid_from_host(2)
ports = pytop.get_outlinks(dp1, dp2)
where ports would be a list of PyLinkPorts of length 2, where
PyLinkPorts is described in that pytopology.i file. Particularly it
would be the equivalent of [ (5, 3), (6, 4) ] , however it's actually
a SWIG-ed out list, which needs to be iterated through using begin(),
incr(), and end().
Hope that helps,
Natasha
On Oct 14, 2009, at 5:56 PM, Pradeep Padala wrote:
That works for me. I also looked at miscws/noxinfows.py, which seems
to
do some of the things I wanted.
I am trying to modify noxinfows.py to return topology. I got a handle
for pytopology with
self.pytop = self.resolve(pytopology)
Later, when the GET request comes, I am calling the function I wrote
below
def _get_nox_topology(self, request, arg):
try:
return simplejson.dumps(self.pytop.XXXXXXXXXXXXXXXXX)
except Exception, e:
return self.err(Failure(), request, "_get_topology",
"Could not retrieve topology")
Now, I don't know how to access the pytopology functions (XXXXXXXXXXXX
part). For example, the get_outlinks() function takes two arguments,
but
in the C++ file, I didn't find any comments on what to pass here.
In the manual, there are just a few notes about the topology module,
grepping through the whole source tree, I didn't find any examples of
using pytopology (may be I am missing something).
Any help would be great.
Thanks,
Pradeep
-----Original Message-----
From: Martin Casado [mailto:[email protected]]
Sent: Wednesday, October 14, 2009 3:35 PM
To: Pradeep Padala
Cc: [email protected]
Subject: Re: make check fails "Import by filename is not supported"
Yeah, that page in the manual is a bit out of date. I appreciate you
pointing this out, I'll clean it up in git.
We use to have a simple webpage for monitoring the state but it
didn't
keep up with changes to the front-end code so we pulled it out.
We'll
be pushing out another on with the next change set but that could
be a
couple of months yet.
That said, extending the web framework is fairly trivial. Check out
src/nox/webapps/webserver/dummywebpage.py
.martin
Thanks, I can run nox_core with pyswitch and pyauthenticator.
I was mainly following the instructions at
http://noxrepo.org/manual/vm_environment.html, and was trying
"From your localhost, you can verify that the switches and hosts are
connected by pointing your browser to http://localhost:8888/";
Is this provided by the monitorsui? It would be nice to see the
topologies visually.
Pradeep
-----Original Message-----
From: Martin Casado [mailto:[email protected]]
Sent: Wednesday, October 14, 2009 1:27 PM
To: Pradeep Padala
Cc: [email protected]
Subject: Re: make check fails "Import by filename is not supported"
Yeah sorry, I should have mentioned before. The monitorsui
component
doesn't exist in 0.5. The documentation is updated in git but not
online. I would just use pyswitch to begin with.
.martin
When I ran that, I found that it's still compiled with python 2.6.
Removed all the build files, and recompiled.
ppad...@ppadala-desktop:~/noxcore/build/src$ ./nox_core pyloop
NOX 0.5.0~full~beta (nox_core), compiled Oct 14 2009 12:59:37
Compiled with OpenFlow 0x97 (exp)
Python 2.5.4 (r254:67916, Apr 4 2009, 18:12:40)
[GCC 4.3.3] on linux2
Now make check works fine, but when I run
sudo ./nox_core -v -i ptcp:2525 monitorsui switchstatsws pyswitch
pyauthenticator
I get the error
00027|nox|ERR:Application 'monitorsui' description not found.
Thanks,
Pradeep
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