Hi Douglas, Hmmm... how about swapping the order of arguments?
e.g) if __name__ == "__main__": manager.main(args=['ryu.app.ofctl_rest'] + sys.argv) FYI, I guess Dr.Bernstein did "hack"(used "ryu.cmd.manager" directly) in order to add original CLI option like "--netfile" and "--widest_paths". On the other hand, you can add your original CLI option as following. $ git diff diff --git a/ryu/flags.py b/ryu/flags.py index 69eb3d2..ebf16c8 100644 --- a/ryu/flags.py +++ b/ryu/flags.py @@ -112,3 +112,10 @@ CONF.register_cli_opts([ help='Initial Router ID used by Zebra protocol service ' '(default: %s)' % DEFAULT_ZSERV_ROUTER_ID), ], group='zapi') + +CONF.register_cli_opts([ + cfg.StrOpt( + 'netfile', default=None, help='network json file'), + cfg.BoolOpt( + 'widest_paths', default=False, help='Use widest path.'), +]) Please note you need to re-install Ryu after the above modifications. $ python setup.py install Then, with this modification, you can run "l2DestForwardStaticRyu.py" as the standard Ryu application via "ryu-manager": $ ryu-manager --help ...(snip)... --netfile NETFILE network json file ...(snip)... --widest_paths Use widest path. ...(snip)... $ ryu-manager l2DestForwardStaticRyu.py ryu.app.ofctl_rest --netfile=ExNetwithLoops1A.json --widest_paths Thanks, Iwase On 2017年06月13日 22:04, Douglas Harewood-Gill wrote: > Hi Iwase and thank you for getting back to me. The author of this program, Dr > Bernstein added this line "from ryu.cmd import manager" which as far as I > understand directly starts Ryu from within side L2DestForwardStaticRyu.py. > Should be around line 29 I think. He had to do this he told me because he > could not start the program in the conventional way because he needed to > import the "ExNetwithLoops!A.json file" for the topology with static mac and > IP addresses. Apparently he could not do this just using the standard Ryu > format of starting the Ryu Manager with the Controller file and then with > REST. > > I tried your suggestion by removing "manager.main(args=sys.argv)" > > from " if __name__ == "__main__": " > > and using the following:- > > "manager.main(args=sys.argv + ['ryu.app.ofctl_rest'])" and I got the > following error message in the terminal. > > "l2DestForwardStaticRyuNS: error: unrecognized arguments: ryu.app.ofctl_rest" > > Any advice would be welcome. I am obviously going to see what I can find here > and will let you know if I find anything relevant. > > Cheers > > Douglas > > > > > On 13 June 2017 at 02:17, Iwase Yusuke <iwase.yusu...@gmail.com > <mailto:iwase.yusu...@gmail.com>> wrote: > > Hi Douglas, > > I checked "L2DestForwardStaticRyu.py", and it seems to be "hacked" to run > app without "ryu-manager". > To start the built-in Ryu application with "L2DestForwardStaticRyu.py", > how about the following? > The following appends to "ofctl_rest" app to the argument of "manager". > > e.g.) around line 91: > > if __name__ == "__main__": > - manager.main(args=sys.argv) > + manager.main(args=sys.argv + ['ryu.app.ofctl_rest']) > > > Thanks, > Iwase > > > On 2017年06月09日 21:00, Douglas Harewood-Gill wrote: > > Hi Iwase. Thank you for contacting me and apologies for my delay in > responding. I have tried what you have suggested but the problem I have is > that the L2DestForwardStaticRyu.py program is designed to run on its own. It > imports the the ryu.cmd import manager and uses the Ryu controller but you > start it by typing "|python l2DestForwardStaticRyu.py > --netfile=ExNetwithLoops1A.json" |where it imports =ExNetWithLoops1A.Json. > > When this program is started, it automatically loads Ryu and implements > the code within this program. I am not sure how to start the this and > ryu.app.ofctl_rest at the same time. I have tried starting them separately in > different terminals but that did not work. > > > > Thank you also for the information you have sent. I have looked at it > before but I do not know how to implement this with my custom code. I have > been looking for examples but they seem to be few and far between. Any advice > as always would be greatly appreciated. > > > > Thanks again. > > > > Douglas > > > > On 8 June 2017 at 01:27, Iwase Yusuke <iwase.yusu...@gmail.com > <mailto:iwase.yusu...@gmail.com> <mailto:iwase.yusu...@gmail.com > <mailto:iwase.yusu...@gmail.com>>> wrote: > > > > Hi Douglas, > > > > Excuse me for cutting in. > > > > Just for getting flow statistics, how about running your app and > ofctl_rest > > together as Fujimoto said. > > e.g.) > > $ ryu-manager your_app.py ryu.app.ofctl_rest > > > > > > If you want to implement your own REST APIs on your app, Ryu-Book > is the > > most helpful as far as I know. > > (You might already be aware of this though...) > > http://osrg.github.io/ryu-book/en/html/rest_api.html > <http://osrg.github.io/ryu-book/en/html/rest_api.html> > <http://osrg.github.io/ryu-book/en/html/rest_api.html > <http://osrg.github.io/ryu-book/en/html/rest_api.html>> > > > > > > FYI, here is an sample implementation on simple_switch_13.py for > getting > > flow statistics. > > The usage of "WSGI" framework is described on Ryu-Book. > > > > > > $ git diff > > diff --git a/ryu/app/simple_switch_13.py > b/ryu/app/simple_switch_13.py > > index 3e7c598..f33e474 100644 > > --- a/ryu/app/simple_switch_13.py > > +++ b/ryu/app/simple_switch_13.py > > @@ -13,6 +13,8 @@ > > # See the License for the specific language governing permissions > and > > # limitations under the License. > > > > +import json > > + > > from ryu.base import app_manager > > from ryu.controller import ofp_event > > from ryu.controller.handler import CONFIG_DISPATCHER, > MAIN_DISPATCHER > > @@ -21,14 +23,26 @@ from ryu.ofproto import ofproto_v1_3 > > from ryu.lib.packet import packet > > from ryu.lib.packet import ethernet > > from ryu.lib.packet import ether_types > > +from ryu.app.ofctl import api as ofctl_api > > +from ryu.app.wsgi import ControllerBase > > +from ryu.app.wsgi import Response > > +from ryu.app.wsgi import route > > +from ryu.app.wsgi import WSGIApplication > > + > > + > > +_URI_PREFIX = '/simpleswitch/stats/{dpid}' > > > > > > class SimpleSwitch13(app_manager.RyuApp): > > OFP_VERSIONS = [ofproto_v1_3.OFP_VERSION] > > + _CONTEXTS = {'wsgi': WSGIApplication} > > > > def __init__(self, *args, **kwargs): > > super(SimpleSwitch13, self).__init__(*args, **kwargs) > > self.mac_to_port = {} > > + wsgi = kwargs['wsgi'] > > + wsgi.register(SimpleSwitchController, > > + {SimpleSwitch13.__name__: self}) > > > > @set_ev_cls(ofp_event.EventOFPSwitchFeatures, > CONFIG_DISPATCHER) > > def switch_features_handler(self, ev): > > @@ -117,3 +131,32 @@ class SimpleSwitch13(app_manager.RyuApp): > > out = parser.OFPPacketOut(datapath=datapath, > buffer_id=msg.buffer_id, > > in_port=in_port, > actions=actions, data=data) > > datapath.send_msg(out) > > + > > + def get_flow_stats(self, dpid): > > + datapath = ofctl_api.get_datapath(self, dpid) > > + if datapath is None: > > + return None > > + > > + parser = datapath.ofproto_parser > > + req = parser.OFPFlowStatsRequest(datapath) > > + > > + rep = ofctl_api.send_msg( > > + app=self, msg=req, > > + reply_cls=parser.OFPFlowStatsReply, reply_multi=True) > > + return [r.to_jsondict() for r in rep] > > + > > + > > +class SimpleSwitchController(ControllerBase): > > + > > + def __init__(self, req, link, data, **config): > > + super(SimpleSwitchController, self).__init__(req, link, > data, **config) > > + self.simple_switch_app = data[SimpleSwitch13.__name__] > > + > > + @route('simpleswitch', _URI_PREFIX, methods=['GET']) > > + def list_mac_table(self, req, **kwargs): > > + dpid = int(str(kwargs['dpid'])) > > + ret = self.simple_switch_app.get_flow_stats(dpid) > > + if ret is None: > > + return Response(status=404) > > + > > + return Response(content_type='application/json', > body=json.dumps(ret)) > > > > > > $ ryu-manager ryu/app/simple_switch_13.py > > Registered VCS backend: git > > Registered VCS backend: hg > > Registered VCS backend: svn > > Registered VCS backend: bzr > > loading app ryu/app/simple_switch_13.py > > loading app ryu.controller.ofp_handler > > loading app ryu.app.ofctl.service > > loading app ryu.controller.ofp_handler > > creating context wsgi > > instantiating app ryu.app.ofctl.service of OfctlService > > instantiating app ryu/app/simple_switch_13.py of SimpleSwitch13 > > instantiating app ryu.controller.ofp_handler of OFPHandler > > (10332) wsgi starting up on http://0.0.0.0:8080 > > ... > > > > > > $ curl -X GET http://localhost:8080/simpleswitch/stats/1 > <http://localhost:8080/simpleswitch/stats/1> > <http://localhost:8080/simpleswitch/stats/1 > <http://localhost:8080/simpleswitch/stats/1>> | python -m json.tool > > [ > > { > > "OFPFlowStatsReply": { > > "body": [ > > { > > "OFPFlowStats": { > > "byte_count": 140, > > "cookie": 0, > > "duration_nsec": 771000000, > > "duration_sec": 1, > > "flags": 0, > > "hard_timeout": 0, > > "idle_timeout": 0, > > "instructions": [ > > { > > "OFPInstructionActions": { > > "actions": [ > > { > > "OFPActionOutput": { > > "len": 16, > > "max_len": 65535, > > "port": 4294967293, > > "type": 0 > > } > > } > > ], > > "len": 24, > > "type": 4 > > } > > } > > ], > > "length": 80, > > "match": { > > "OFPMatch": { > > "length": 4, > > "oxm_fields": [], > > "type": 1 > > } > > }, > > "packet_count": 2, > > "priority": 0, > > "table_id": 0 > > } > > } > > ], > > "flags": 0, > > "type": 1 > > } > > } > > ] > > > > > > Thanks, > > Iwase > > > > > > On 2017年06月07日 20:21, Douglas Harewood-Gill wrote: > > > Hi there. That is fantastic. Sounds exactly like what I am > looking for so thank you. > > > > > > One last question for the minute. I know you provided a link but > how do you implement this with custom Ryu controller code? > > > > > > My apologies if I am asking something really obvious. > > > > > > Cheers > > > > > > Douglas > > > > > > On 7 June 2017 at 01:15, Fujimoto Satoshi > <satoshi.fujimo...@gmail.com <mailto:satoshi.fujimo...@gmail.com> > <mailto:satoshi.fujimo...@gmail.com <mailto:satoshi.fujimo...@gmail.com>> > <mailto:satoshi.fujimo...@gmail.com <mailto:satoshi.fujimo...@gmail.com> > <mailto:satoshi.fujimo...@gmail.com <mailto:satoshi.fujimo...@gmail.com>>>> > wrote: > > > > > > Hi, Douglas > > > > > > Ryu has ofctl_rest.py, which is a sample application and > provides REST API to get flow statistics. > > > > http://ryu.readthedocs.io/en/latest/app/ofctl_rest.html > <http://ryu.readthedocs.io/en/latest/app/ofctl_rest.html> > <http://ryu.readthedocs.io/en/latest/app/ofctl_rest.html > <http://ryu.readthedocs.io/en/latest/app/ofctl_rest.html>> > <http://ryu.readthedocs.io/en/latest/app/ofctl_rest.html > <http://ryu.readthedocs.io/en/latest/app/ofctl_rest.html> > <http://ryu.readthedocs.io/en/latest/app/ofctl_rest.html > <http://ryu.readthedocs.io/en/latest/app/ofctl_rest.html>>> > > > > > > I think it is better to use ofctl_rest.py than to implement > your own REST API in your app. > > > > > > Thanks, > > > Fujimoto > > > > > > > > > On 2017年06月06日 21:18, Douglas Harewood-Gill wrote: > > >> > > >> Greetings I am a PhD student new to both Python and Ryu and > I was wondering if anyone could give me some advice. > > >> > > >> > > >> I am using the Ryu controller program > (L2DestForwardStaticRyu.py) provided by Dr Grey Bernstein > (https://www.grotto-networking.com/SDNfun.html#programming-switches-with-ryu > <https://www.grotto-networking.com/SDNfun.html#programming-switches-with-ryu> > <https://www.grotto-networking.com/SDNfun.html#programming-switches-with-ryu > <https://www.grotto-networking.com/SDNfun.html#programming-switches-with-ryu>> > <https://www.grotto-networking.com/SDNfun.html#programming-switches-with-ryu > <https://www.grotto-networking.com/SDNfun.html#programming-switches-with-ryu> > <https://www.grotto-networking.com/SDNfun.html#programming-switches-with-ryu > <https://www.grotto-networking.com/SDNfun.html#programming-switches-with-ryu>>>) > for shortest path computation for a full Mesh network in Mininet but the > example provided does not include REST which I require to be able to collect > flow statistics such as the flows in each router, bandwidth, latency, etc. > > >> > > >> > > >> Unfortunately I have been looking and with the exception of > (https://osrg.github.io/ryu-book/en/html/rest_api.html > <https://osrg.github.io/ryu-book/en/html/rest_api.html> > <https://osrg.github.io/ryu-book/en/html/rest_api.html > <https://osrg.github.io/ryu-book/en/html/rest_api.html>> > <https://osrg.github.io/ryu-book/en/html/rest_api.html > <https://osrg.github.io/ryu-book/en/html/rest_api.html> > <https://osrg.github.io/ryu-book/en/html/rest_api.html > <https://osrg.github.io/ryu-book/en/html/rest_api.html>>>) which seems overly > specific, I am unable to find a good example that would allow me to work out > how to integrate REST into the above Ryu control program. > > >> > > >> So if anyone can point me in the right direction or can > provide some examples, I would be most grateful. > > >> > > >> > > >> Thank you for your time. > > >> > > >> > > >> Best Regards > > >> > > >> > > >> Douglas > > >> > > >> > > >> > > >> -- > > >> *Douglas Harewood-Gill MSc MIET* > > >> CDT Student in Communications (PhD), University of Bristol > > >> Post-Graduate Student (Taught and Research) > > >> e-mail: douglas.harewood-g...@bristol.ac.uk > <mailto:douglas.harewood-g...@bristol.ac.uk> > <mailto:douglas.harewood-g...@bristol.ac.uk > <mailto:douglas.harewood-g...@bristol.ac.uk>> > <mailto:douglas.harewood-g...@bristol.ac.uk > <mailto:douglas.harewood-g...@bristol.ac.uk> > <mailto:douglas.harewood-g...@bristol.ac.uk > <mailto:douglas.harewood-g...@bristol.ac.uk>>> > > >> > > >> * > > >> CDT Communications* > > >> > > >> University of Bristol, Merchant Venturers' Building, > Woodland Road, Clifton, Bristol. BS8 1UB > > >> > > >> http://www.bristol.ac.uk/ > > >> > > >> > > >> > > >> > > >> > ------------------------------------------------------------------------------ > > >> Check out the vibrant tech community on one of the world's > most > > >> engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > >> > > >> > > >> _______________________________________________ > > >> Ryu-devel mailing list > > >> Ryu-devel@lists.sourceforge.net > <mailto:Ryu-devel@lists.sourceforge.net> > <mailto:Ryu-devel@lists.sourceforge.net > <mailto:Ryu-devel@lists.sourceforge.net>> > <mailto:Ryu-devel@lists.sourceforge.net > <mailto:Ryu-devel@lists.sourceforge.net> > <mailto:Ryu-devel@lists.sourceforge.net > <mailto:Ryu-devel@lists.sourceforge.net>>> > > >> https://lists.sourceforge.net/lists/listinfo/ryu-devel > <https://lists.sourceforge.net/lists/listinfo/ryu-devel> > <https://lists.sourceforge.net/lists/listinfo/ryu-devel > <https://lists.sourceforge.net/lists/listinfo/ryu-devel>> > <https://lists.sourceforge.net/lists/listinfo/ryu-devel > <https://lists.sourceforge.net/lists/listinfo/ryu-devel> > <https://lists.sourceforge.net/lists/listinfo/ryu-devel > <https://lists.sourceforge.net/lists/listinfo/ryu-devel>>> > > > > > > > > > > > > > > > -- > > > *Douglas Harewood-Gill MSc MIET* > > > CDT Student in Communications (PhD), University of Bristol > > > Post-Graduate Student (Taught and Research) > > > e-mail: douglas.harewood-g...@bristol.ac.uk > <mailto:douglas.harewood-g...@bristol.ac.uk> > <mailto:douglas.harewood-g...@bristol.ac.uk > <mailto:douglas.harewood-g...@bristol.ac.uk>> > <mailto:douglas.harewood-g...@bristol.ac.uk > <mailto:douglas.harewood-g...@bristol.ac.uk> > <mailto:douglas.harewood-g...@bristol.ac.uk > <mailto:douglas.harewood-g...@bristol.ac.uk>>> > > > > > > * > > > CDT Communications* > > > > > > University of Bristol, Merchant Venturers' Building, Woodland > Road, Clifton, Bristol. BS8 1UB > > > > > > http://www.bristol.ac.uk/ > > > > > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > Check out the vibrant tech community on one of the world's most > > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > > > > > > > > > > > _______________________________________________ > > > Ryu-devel mailing list > > > Ryu-devel@lists.sourceforge.net > <mailto:Ryu-devel@lists.sourceforge.net> > <mailto:Ryu-devel@lists.sourceforge.net > <mailto:Ryu-devel@lists.sourceforge.net>> > > > https://lists.sourceforge.net/lists/listinfo/ryu-devel > <https://lists.sourceforge.net/lists/listinfo/ryu-devel> > <https://lists.sourceforge.net/lists/listinfo/ryu-devel > <https://lists.sourceforge.net/lists/listinfo/ryu-devel>> > > > > > > > > > > > > > -- > > *Douglas Harewood-Gill MSc MIET* > > CDT Student in Communications (PhD), University of Bristol > > Post-Graduate Student (Taught and Research) > > e-mail: douglas.harewood-g...@bristol.ac.uk > <mailto:douglas.harewood-g...@bristol.ac.uk> > <mailto:douglas.harewood-g...@bristol.ac.uk > <mailto:douglas.harewood-g...@bristol.ac.uk>> > > > > * > > CDT Communications* > > > > University of Bristol, Merchant Venturers' Building, Woodland Road, > Clifton, Bristol. BS8 1UB > > > > http://www.bristol.ac.uk/ > > > > > > > > > > > ------------------------------------------------------------------------------ > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > > > > > > > _______________________________________________ > > Ryu-devel mailing list > > Ryu-devel@lists.sourceforge.net <mailto:Ryu-devel@lists.sourceforge.net> > > https://lists.sourceforge.net/lists/listinfo/ryu-devel > <https://lists.sourceforge.net/lists/listinfo/ryu-devel> > > > > > > > -- > *Douglas Harewood-Gill MSc MIET* > CDT Student in Communications (PhD), University of Bristol > Post-Graduate Student (Taught and Research) > e-mail: douglas.harewood-g...@bristol.ac.uk > <mailto:douglas.harewood-g...@bristol.ac.uk> > > * > CDT Communications* > > University of Bristol, Merchant Venturers' Building, Woodland Road, Clifton, > Bristol. BS8 1UB > > http://www.bristol.ac.uk/ > > > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > > > _______________________________________________ > Ryu-devel mailing list > Ryu-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/ryu-devel > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Ryu-devel mailing list Ryu-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ryu-devel