Hi guys: Two days ago I posted a question about how to delete a group of flows using REST API. The answer was: using cookie. An attribute of a JSON structure.
It was great!!!!
But, to delete a flow using the REST API you have to send an HTTP DELETE, there is not payload, you do not use a JSON structure.
So, How I can specify the cookie in a DELETE post?
Thank you in advance, marcelo
Marcelo,
you can issue a DELETE with data, the same way you would with a POST. Not sure how you are sending your REST calls, but with curl you would just make the request DELETE (-X delete) and pass the flow data with --data-binary.
I have not tried this with OpenDaylight, but hoping it's as simple as that.
here is the python code. I took it from a library I've used for a different controller platform, trimmed it down for brevity and modified it a bit to hopefully work with OpenDaylight (Bearer header, for example), but I have not tried it. Hopefully you can get it to work:
import urllib2
from urllib2 import HTTPError
def genericREST(method,url,data,xAuthToken,debug=False):
req = urllib2.Request(url, data)
try:
req.get_method=lambda: method
if xAuthToken != None:
req.add_header("Bearer",xAuthToken)
req.add_header("Content-type","application/x-www-form-urlencoded")
response = urllib2.urlopen(req)
return response
except Exception as e:
return "Error: %s"%e
def deleteREST(url,data,xAuthToken,debug=False):
return genericREST("DELETE", url, data, xAuthToken, debug)
Hi jamoluhrsen: thank you for your response. But I think it is not as simple. If you have time, take a look to this article: https://groups.google.com/a/openflowhub.org/forum/#!topic/floodlight-dev/CF7_Zwt-WVA Regards, marcelo
rolecram ( 2015-03-05 13:32:00 -0800 )editThanks for the info Marcelo, looks like spec-wise it's not going to work. I do know that some REST utilities will allow it, so if you are not stuck with a tool that disallows it you might get it to work. I can dig up some python code I've used before that does this, if that would be helpful.
jamoluhrsen ( 2015-03-05 15:43:35 -0800 )editJamo, i half remember that Michal gave you a different REST call to delete flows that in Operations table but not Config, i believe that could do it.
Chris O'Shea ( 2015-03-06 01:36:35 -0800 )editThanks for the reminder Chris. Maybe not totally helpful, but here is the thread: https://lists.opendaylight.org/pipermail/openflowplugin-dev/2014-September/001972.html I was trying to remove a flow that only existed in the operational store. That was with a POST.
jamoluhrsen ( 2015-03-06 10:35:33 -0800 )editI don't know about deleting the flow using cookie. I personally send a request like this which deletes the flow from table and from switch if you specify the node id, table id where the flow is and the flow id.
Something like this:
http://<controller-ip>:8181/restconf/config/opendaylight-inventory:nodes/node/<node id="">/table//flow/<flow id="">
Change the fields between '<>' to your values.
If you want to delete an entire table the procedure is the same and is something like this: http://<controller-ip>:8181/restconf/config/opendaylight-inventory:nodes/node/<node id="">/table/</node></controller-ip>
</flow>Regards, Nuno B.
Asked: 2015-03-04 18:01:12 -0800
Seen: 1,669 times
Last updated: Mar 08 '15
