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# Copyright (C) 2012 Nippon Telegraph and Telephone Corporation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
import json
import ast
from ryu.base import app_manager
from ryu.controller import ofp_event
from ryu.controller import dpset
from ryu.controller.handler import MAIN_DISPATCHER
from ryu.controller.handler import set_ev_cls
from ryu.exception import RyuException
from ryu.ofproto import ofproto_v1_0
from ryu.ofproto import ofproto_v1_2
from ryu.ofproto import ofproto_v1_3
from ryu.ofproto import ofproto_v1_4
from ryu.ofproto import ofproto_v1_5
from ryu.lib import ofctl_v1_0
from ryu.lib import ofctl_v1_2
from ryu.lib import ofctl_v1_3
from ryu.lib import ofctl_v1_4
from ryu.lib import ofctl_v1_5
from ryu.app.wsgi import ControllerBase
from ryu.app.wsgi import Response
from ryu.app.wsgi import WSGIApplication
LOG = logging.getLogger('ryu.app.ofctl_rest')
# supported ofctl versions in this restful app
supported_ofctl = {
ofproto_v1_0.OFP_VERSION: ofctl_v1_0,
ofproto_v1_2.OFP_VERSION: ofctl_v1_2,
ofproto_v1_3.OFP_VERSION: ofctl_v1_3,
ofproto_v1_4.OFP_VERSION: ofctl_v1_4,
ofproto_v1_5.OFP_VERSION: ofctl_v1_5,
}
# REST API
#
# Retrieve the switch stats
#
# get the list of all switches
# GET /stats/switches
#
# get the desc stats of the switch
# GET /stats/desc/<dpid>
#
# get flows desc stats of the switch
# GET /stats/flowdesc/<dpid>
#
# get flows desc stats of the switch filtered by the fields
# POST /stats/flowdesc/<dpid>
#
# get flows stats of the switch
# GET /stats/flow/<dpid>
#
# get flows stats of the switch filtered by the fields
# POST /stats/flow/<dpid>
#
# get aggregate flows stats of the switch
# GET /stats/aggregateflow/<dpid>
#
# get aggregate flows stats of the switch filtered by the fields
# POST /stats/aggregateflow/<dpid>
#
# get table stats of the switch
# GET /stats/table/<dpid>
#
# get table features stats of the switch
# GET /stats/tablefeatures/<dpid>
#
# get ports stats of the switch
# GET /stats/port/<dpid>[/<port>]
# Note: Specification of port number is optional
#
# get queues stats of the switch
# GET /stats/queue/<dpid>[/<port>[/<queue_id>]]
# Note: Specification of port number and queue id are optional
# If you want to omitting the port number and setting the queue id,
# please specify the keyword "ALL" to the port number
# e.g. GET /stats/queue/1/ALL/1
#
# get queues config stats of the switch
# GET /stats/queueconfig/<dpid>[/<port>]
# Note: Specification of port number is optional
#
# get queues desc stats of the switch
# GET /stats/queuedesc/<dpid>[/<port>[/<queue_id>]]
# Note: Specification of port number and queue id are optional
# If you want to omitting the port number and setting the queue id,
# please specify the keyword "ALL" to the port number
# e.g. GET /stats/queuedesc/1/ALL/1
#
# get meter features stats of the switch
# GET /stats/meterfeatures/<dpid>
#
# get meter config stats of the switch
# GET /stats/meterconfig/<dpid>[/<meter_id>]
# Note: Specification of meter id is optional
#
# get meter desc stats of the switch
# GET /stats/meterdesc/<dpid>[/<meter_id>]
# Note: Specification of meter id is optional
#
# get meters stats of the switch
# GET /stats/meter/<dpid>[/<meter_id>]
# Note: Specification of meter id is optional
#
# get group features stats of the switch
# GET /stats/groupfeatures/<dpid>
#
# get groups desc stats of the switch
# GET /stats/groupdesc/<dpid>[/<group_id>]
# Note: Specification of group id is optional (OpenFlow 1.5 or later)
#
# get groups stats of the switch
# GET /stats/group/<dpid>[/<group_id>]
# Note: Specification of group id is optional
#
# get ports description of the switch
# GET /stats/portdesc/<dpid>[/<port_no>]
# Note: Specification of port number is optional (OpenFlow 1.5 or later)
# Update the switch stats
#
# add a flow entry
# POST /stats/flowentry/add
#
# modify all matching flow entries
# POST /stats/flowentry/modify
#
# modify flow entry strictly matching wildcards and priority
# POST /stats/flowentry/modify_strict
#
# delete all matching flow entries
# POST /stats/flowentry/delete
#
# delete flow entry strictly matching wildcards and priority
# POST /stats/flowentry/delete_strict
#
# delete all flow entries of the switch
# DELETE /stats/flowentry/clear/<dpid>
#
# add a meter entry
# POST /stats/meterentry/add
#
# modify a meter entry
# POST /stats/meterentry/modify
#
# delete a meter entry
# POST /stats/meterentry/delete
#
# add a group entry
# POST /stats/groupentry/add
#
# modify a group entry
# POST /stats/groupentry/modify
#
# delete a group entry
# POST /stats/groupentry/delete
#
# modify behavior of the physical port
# POST /stats/portdesc/modify
#
# modify role of controller
# POST /stats/role
#
#
# send a experimeter message
# POST /stats/experimenter/<dpid>
class CommandNotFoundError(RyuException):
message = 'No such command : %(cmd)s'
class PortNotFoundError(RyuException):
message = 'No such port info: %(port_no)s'
def stats_method(method):
def wrapper(self, req, dpid, *args, **kwargs):
# Get datapath instance from DPSet
try:
dp = self.dpset.get(int(str(dpid), 0))
except ValueError:
LOG.exception('Invalid dpid: %s', dpid)
return Response(status=400)
if dp is None:
LOG.error('No such Datapath: %s', dpid)
return Response(status=404)
# Get lib/ofctl_* module
try:
ofctl = supported_ofctl.get(dp.ofproto.OFP_VERSION)
except KeyError:
LOG.exception('Unsupported OF version: %s',
dp.ofproto.OFP_VERSION)
return Response(status=501)
# Invoke StatsController method
try:
ret = method(self, req, dp, ofctl, *args, **kwargs)
return Response(content_type='application/json',
body=json.dumps(ret))
except ValueError:
LOG.exception('Invalid syntax: %s', req.body)
return Response(status=400)
except AttributeError:
LOG.exception('Unsupported OF request in this version: %s',
dp.ofproto.OFP_VERSION)
return Response(status=501)
return wrapper
def command_method(method):
def wrapper(self, req, *args, **kwargs):
# Parse request json body
try:
if req.body:
# We use ast.literal_eval() to parse request json body
# instead of json.loads().
# Because we need to parse binary format body
# in send_experimenter().
body = ast.literal_eval(req.body.decode('utf-8'))
else:
body = {}
except SyntaxError:
LOG.exception('Invalid syntax: %s', req.body)
return Response(status=400)
# Get datapath_id from request parameters
dpid = body.get('dpid', None)
if not dpid:
try:
dpid = kwargs.pop('dpid')
except KeyError:
LOG.exception('Cannot get dpid from request parameters')
return Response(status=400)
# Get datapath instance from DPSet
try:
dp = self.dpset.get(int(str(dpid), 0))
except ValueError:
LOG.exception('Invalid dpid: %s', dpid)
return Response(status=400)
if dp is None:
LOG.error('No such Datapath: %s', dpid)
return Response(status=404)
# Get lib/ofctl_* module
try:
ofctl = supported_ofctl.get(dp.ofproto.OFP_VERSION)
except KeyError:
LOG.exception('Unsupported OF version: version=%s',
dp.ofproto.OFP_VERSION)
return Response(status=501)
# Invoke StatsController method
try:
method(self, req, dp, ofctl, body, *args, **kwargs)
return Response(status=200)
except ValueError:
LOG.exception('Invalid syntax: %s', req.body)
return Response(status=400)
except AttributeError:
LOG.exception('Unsupported OF request in this version: %s',
dp.ofproto.OFP_VERSION)
return Response(status=501)
except CommandNotFoundError as e:
LOG.exception(e.message)
return Response(status=404)
except PortNotFoundError as e:
LOG.exception(e.message)
return Response(status=404)
return wrapper
class StatsController(ControllerBase):
def __init__(self, req, link, data, **config):
super(StatsController, self).__init__(req, link, data, **config)
self.dpset = data['dpset']
self.waiters = data['waiters']
def get_dpids(self, req, **_kwargs):
dps = list(self.dpset.dps.keys())
body = json.dumps(dps)
return Response(content_type='application/json', body=body)
@stats_method
def get_desc_stats(self, req, dp, ofctl, **kwargs):
return ofctl.get_desc_stats(dp, self.waiters)
@stats_method
def get_flow_desc(self, req, dp, ofctl, **kwargs):
flow = req.json if req.body else {}
return ofctl.get_flow_desc(dp, self.waiters, flow)
@stats_method
def get_flow_stats(self, req, dp, ofctl, **kwargs):
flow = req.json if req.body else {}
return ofctl.get_flow_stats(dp, self.waiters, flow)
@stats_method
def get_aggregate_flow_stats(self, req, dp, ofctl, **kwargs):
flow = req.json if req.body else {}
return ofctl.get_aggregate_flow_stats(dp, self.waiters, flow)
@stats_method
def get_table_stats(self, req, dp, ofctl, **kwargs):
return ofctl.get_table_stats(dp, self.waiters)
@stats_method
def get_table_features(self, req, dp, ofctl, **kwargs):
return ofctl.get_table_features(dp, self.waiters)
@stats_method
def get_port_stats(self, req, dp, ofctl, port=None, **kwargs):
if port == "ALL":
port = None
return ofctl.get_port_stats(dp, self.waiters, port)
@stats_method
def get_queue_stats(self, req, dp, ofctl,
port=None, queue_id=None, **kwargs):
if port == "ALL":
port = None
if queue_id == "ALL":
queue_id = None
return ofctl.get_queue_stats(dp, self.waiters, port, queue_id)
@stats_method
def get_queue_config(self, req, dp, ofctl, port=None, **kwargs):
if port == "ALL":
port = None
return ofctl.get_queue_config(dp, self.waiters, port)
@stats_method
def get_queue_desc(self, req, dp, ofctl,
port=None, queue=None, **_kwargs):
if port == "ALL":
port = None
if queue == "ALL":
queue = None
return ofctl.get_queue_desc(dp, self.waiters, port, queue)
@stats_method
def get_meter_features(self, req, dp, ofctl, **kwargs):
return ofctl.get_meter_features(dp, self.waiters)
@stats_method
def get_meter_config(self, req, dp, ofctl, meter_id=None, **kwargs):
if meter_id == "ALL":
meter_id = None
return ofctl.get_meter_config(dp, self.waiters, meter_id)
@stats_method
def get_meter_desc(self, req, dp, ofctl, meter_id=None, **kwargs):
if meter_id == "ALL":
meter_id = None
return ofctl.get_meter_desc(dp, self.waiters, meter_id)
@stats_method
def get_meter_stats(self, req, dp, ofctl, meter_id=None, **kwargs):
if meter_id == "ALL":
meter_id = None
return ofctl.get_meter_stats(dp, self.waiters, meter_id)
@stats_method
def get_group_features(self, req, dp, ofctl, **kwargs):
return ofctl.get_group_features(dp, self.waiters)
@stats_method
def get_group_desc(self, req, dp, ofctl, group_id=None, **kwargs):
if dp.ofproto.OFP_VERSION < ofproto_v1_5.OFP_VERSION:
return ofctl.get_group_desc(dp, self.waiters)
else:
return ofctl.get_group_desc(dp, self.waiters, group_id)
@stats_method
def get_group_stats(self, req, dp, ofctl, group_id=None, **kwargs):
if group_id == "ALL":
group_id = None
return ofctl.get_group_stats(dp, self.waiters, group_id)
@stats_method
def get_port_desc(self, req, dp, ofctl, port_no=None, **kwargs):
if dp.ofproto.OFP_VERSION < ofproto_v1_5.OFP_VERSION:
return ofctl.get_port_desc(dp, self.waiters)
else:
return ofctl.get_port_desc(dp, self.waiters, port_no)
@stats_method
def get_role(self, req, dp, ofctl, **kwargs):
return ofctl.get_role(dp, self.waiters)
@command_method
def mod_flow_entry(self, req, dp, ofctl, flow, cmd, **kwargs):
cmd_convert = {
'add': dp.ofproto.OFPFC_ADD,
'modify': dp.ofproto.OFPFC_MODIFY,
'modify_strict': dp.ofproto.OFPFC_MODIFY_STRICT,
'delete': dp.ofproto.OFPFC_DELETE,
'delete_strict': dp.ofproto.OFPFC_DELETE_STRICT,
}
mod_cmd = cmd_convert.get(cmd, None)
if mod_cmd is None:
raise CommandNotFoundError(cmd=cmd)
ofctl.mod_flow_entry(dp, flow, mod_cmd)
@command_method
def delete_flow_entry(self, req, dp, ofctl, flow, **kwargs):
if ofproto_v1_0.OFP_VERSION == dp.ofproto.OFP_VERSION:
flow = {}
else:
flow = {'table_id': dp.ofproto.OFPTT_ALL}
ofctl.mod_flow_entry(dp, flow, dp.ofproto.OFPFC_DELETE)
@command_method
def mod_meter_entry(self, req, dp, ofctl, meter, cmd, **kwargs):
cmd_convert = {
'add': dp.ofproto.OFPMC_ADD,
'modify': dp.ofproto.OFPMC_MODIFY,
'delete': dp.ofproto.OFPMC_DELETE,
}
mod_cmd = cmd_convert.get(cmd, None)
if mod_cmd is None:
raise CommandNotFoundError(cmd=cmd)
ofctl.mod_meter_entry(dp, meter, mod_cmd)
@command_method
def mod_group_entry(self, req, dp, ofctl, group, cmd, **kwargs):
cmd_convert = {
'add': dp.ofproto.OFPGC_ADD,
'modify': dp.ofproto.OFPGC_MODIFY,
'delete': dp.ofproto.OFPGC_DELETE,
}
mod_cmd = cmd_convert.get(cmd, None)
if mod_cmd is None:
raise CommandNotFoundError(cmd=cmd)
ofctl.mod_group_entry(dp, group, mod_cmd)
@command_method
def mod_port_behavior(self, req, dp, ofctl, port_config, cmd, **kwargs):
port_no = port_config.get('port_no', None)
port_no = int(str(port_no), 0)
port_info = self.dpset.port_state[int(dp.id)].get(port_no)
if port_info:
port_config.setdefault('hw_addr', port_info.hw_addr)
if dp.ofproto.OFP_VERSION < ofproto_v1_4.OFP_VERSION:
port_config.setdefault('advertise', port_info.advertised)
else:
port_config.setdefault('properties', port_info.properties)
else:
raise PortNotFoundError(port_no=port_no)
if cmd != 'modify':
raise CommandNotFoundError(cmd=cmd)
ofctl.mod_port_behavior(dp, port_config)
@command_method
def send_experimenter(self, req, dp, ofctl, exp, **kwargs):
ofctl.send_experimenter(dp, exp)
@command_method
def set_role(self, req, dp, ofctl, role, **kwargs):
ofctl.set_role(dp, role)
class RestStatsApi(app_manager.RyuApp):
OFP_VERSIONS = [ofproto_v1_0.OFP_VERSION,
ofproto_v1_2.OFP_VERSION,
ofproto_v1_3.OFP_VERSION,
ofproto_v1_4.OFP_VERSION,
ofproto_v1_5.OFP_VERSION]
_CONTEXTS = {
'dpset': dpset.DPSet,
'wsgi': WSGIApplication
}
def __init__(self, *args, **kwargs):
super(RestStatsApi, self).__init__(*args, **kwargs)
self.dpset = kwargs['dpset']
wsgi = kwargs['wsgi']
self.waiters = {}
self.data = {}
self.data['dpset'] = self.dpset
self.data['waiters'] = self.waiters
mapper = wsgi.mapper
wsgi.registory['StatsController'] = self.data
path = '/stats'
uri = path + '/switches'
mapper.connect('stats', uri,
controller=StatsController, action='get_dpids',
conditions=dict(method=['GET']))
uri = path + '/desc/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_desc_stats',
conditions=dict(method=['GET']))
uri = path + '/flowdesc/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_flow_stats',
conditions=dict(method=['GET', 'POST']))
uri = path + '/flow/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_flow_stats',
conditions=dict(method=['GET', 'POST']))
uri = path + '/aggregateflow/{dpid}'
mapper.connect('stats', uri,
controller=StatsController,
action='get_aggregate_flow_stats',
conditions=dict(method=['GET', 'POST']))
uri = path + '/table/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_table_stats',
conditions=dict(method=['GET']))
uri = path + '/tablefeatures/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_table_features',
conditions=dict(method=['GET']))
uri = path + '/port/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_port_stats',
conditions=dict(method=['GET']))
uri = path + '/port/{dpid}/{port}'
mapper.connect('stats', uri,
controller=StatsController, action='get_port_stats',
conditions=dict(method=['GET']))
uri = path + '/queue/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_queue_stats',
conditions=dict(method=['GET']))
uri = path + '/queue/{dpid}/{port}'
mapper.connect('stats', uri,
controller=StatsController, action='get_queue_stats',
conditions=dict(method=['GET']))
uri = path + '/queue/{dpid}/{port}/{queue_id}'
mapper.connect('stats', uri,
controller=StatsController, action='get_queue_stats',
conditions=dict(method=['GET']))
uri = path + '/queueconfig/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_queue_config',
conditions=dict(method=['GET']))
uri = path + '/queueconfig/{dpid}/{port}'
mapper.connect('stats', uri,
controller=StatsController, action='get_queue_config',
conditions=dict(method=['GET']))
uri = path + '/queuedesc/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_queue_desc',
conditions=dict(method=['GET']))
uri = path + '/queuedesc/{dpid}/{port}'
mapper.connect('stats', uri,
controller=StatsController, action='get_queue_desc',
conditions=dict(method=['GET']))
uri = path + '/queuedesc/{dpid}/{port}/{queue}'
mapper.connect('stats', uri,
controller=StatsController, action='get_queue_desc',
conditions=dict(method=['GET']))
uri = path + '/meterfeatures/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_meter_features',
conditions=dict(method=['GET']))
uri = path + '/meterconfig/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_meter_config',
conditions=dict(method=['GET']))
uri = path + '/meterconfig/{dpid}/{meter_id}'
mapper.connect('stats', uri,
controller=StatsController, action='get_meter_config',
conditions=dict(method=['GET']))
uri = path + '/meterdesc/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_meter_desc',
conditions=dict(method=['GET']))
uri = path + '/meterdesc/{dpid}/{meter_id}'
mapper.connect('stats', uri,
controller=StatsController, action='get_meter_desc',
conditions=dict(method=['GET']))
uri = path + '/meter/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_meter_stats',
conditions=dict(method=['GET']))
uri = path + '/meter/{dpid}/{meter_id}'
mapper.connect('stats', uri,
controller=StatsController, action='get_meter_stats',
conditions=dict(method=['GET']))
uri = path + '/groupfeatures/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_group_features',
conditions=dict(method=['GET']))
uri = path + '/groupdesc/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_group_desc',
conditions=dict(method=['GET']))
uri = path + '/groupdesc/{dpid}/{group_id}'
mapper.connect('stats', uri,
controller=StatsController, action='get_group_desc',
conditions=dict(method=['GET']))
uri = path + '/group/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_group_stats',
conditions=dict(method=['GET']))
uri = path + '/group/{dpid}/{group_id}'
mapper.connect('stats', uri,
controller=StatsController, action='get_group_stats',
conditions=dict(method=['GET']))
uri = path + '/portdesc/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_port_desc',
conditions=dict(method=['GET']))
uri = path + '/portdesc/{dpid}/{port_no}'
mapper.connect('stats', uri,
controller=StatsController, action='get_port_desc',
conditions=dict(method=['GET']))
uri = path + '/role/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='get_role',
conditions=dict(method=['GET']))
uri = path + '/flowentry/{cmd}'
mapper.connect('stats', uri,
controller=StatsController, action='mod_flow_entry',
conditions=dict(method=['POST']))
uri = path + '/flowentry/clear/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='delete_flow_entry',
conditions=dict(method=['DELETE']))
uri = path + '/meterentry/{cmd}'
mapper.connect('stats', uri,
controller=StatsController, action='mod_meter_entry',
conditions=dict(method=['POST']))
uri = path + '/groupentry/{cmd}'
mapper.connect('stats', uri,
controller=StatsController, action='mod_group_entry',
conditions=dict(method=['POST']))
uri = path + '/portdesc/{cmd}'
mapper.connect('stats', uri,
controller=StatsController, action='mod_port_behavior',
conditions=dict(method=['POST']))
uri = path + '/experimenter/{dpid}'
mapper.connect('stats', uri,
controller=StatsController, action='send_experimenter',
conditions=dict(method=['POST']))
uri = path + '/role'
mapper.connect('stats', uri,
controller=StatsController, action='set_role',
conditions=dict(method=['POST']))
@set_ev_cls([ofp_event.EventOFPStatsReply,
ofp_event.EventOFPDescStatsReply,
ofp_event.EventOFPFlowStatsReply,
ofp_event.EventOFPAggregateStatsReply,
ofp_event.EventOFPTableStatsReply,
ofp_event.EventOFPTableFeaturesStatsReply,
ofp_event.EventOFPPortStatsReply,
ofp_event.EventOFPQueueStatsReply,
ofp_event.EventOFPQueueDescStatsReply,
ofp_event.EventOFPMeterStatsReply,
ofp_event.EventOFPMeterFeaturesStatsReply,
ofp_event.EventOFPMeterConfigStatsReply,
ofp_event.EventOFPGroupStatsReply,
ofp_event.EventOFPGroupFeaturesStatsReply,
ofp_event.EventOFPGroupDescStatsReply,
ofp_event.EventOFPPortDescStatsReply
], MAIN_DISPATCHER)
def stats_reply_handler(self, ev):
msg = ev.msg
dp = msg.datapath
if dp.id not in self.waiters:
return
if msg.xid not in self.waiters[dp.id]:
return
lock, msgs = self.waiters[dp.id][msg.xid]
msgs.append(msg)
flags = 0
if dp.ofproto.OFP_VERSION == ofproto_v1_0.OFP_VERSION:
flags = dp.ofproto.OFPSF_REPLY_MORE
elif dp.ofproto.OFP_VERSION == ofproto_v1_2.OFP_VERSION:
flags = dp.ofproto.OFPSF_REPLY_MORE
elif dp.ofproto.OFP_VERSION >= ofproto_v1_3.OFP_VERSION:
flags = dp.ofproto.OFPMPF_REPLY_MORE
if msg.flags & flags:
return
del self.waiters[dp.id][msg.xid]
lock.set()
@set_ev_cls([ofp_event.EventOFPSwitchFeatures,
ofp_event.EventOFPQueueGetConfigReply,
ofp_event.EventOFPRoleReply,
], MAIN_DISPATCHER)
def features_reply_handler(self, ev):
msg = ev.msg
dp = msg.datapath
if dp.id not in self.waiters:
return
if msg.xid not in self.waiters[dp.id]:
return
lock, msgs = self.waiters[dp.id][msg.xid]
msgs.append(msg)
del self.waiters[dp.id][msg.xid]
lock.set()