"""
-Distributed Cloud Emulator (dcemulator)
-(c) 2015 by Manuel Peuster <manuel.peuster@upb.de>
+Copyright (c) 2015 SONATA-NFV and Paderborn University
+ALL RIGHTS RESERVED.
+
+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.
+
+Neither the name of the SONATA-NFV [, ANY ADDITIONAL AFFILIATION]
+nor the names of its contributors may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+
+This work has been performed in the framework of the SONATA project,
+funded by the European Commission under Grant number 671517 through
+the Horizon 2020 and 5G-PPP programmes. The authors would like to
+acknowledge the contributions of their colleagues of the SONATA
+partner consortium (www.sonata-nfv.eu).
"""
import logging
import urllib2
from functools import partial
-from mininet.net import Dockernet
+from mininet.net import Containernet
from mininet.node import Controller, DefaultController, OVSSwitch, OVSKernelSwitch, Docker, RemoteController
from mininet.cli import CLI
from mininet.link import TCLink
+from mininet.clean import cleanup
import networkx as nx
from emuvim.dcemulator.monitoring import DCNetworkMonitor
from emuvim.dcemulator.node import Datacenter, EmulatorCompute
from emuvim.dcemulator.resourcemodel import ResourceModelRegistrar
-class DCNetwork(Dockernet):
+LOG = logging.getLogger("dcemulator.net")
+LOG.setLevel(logging.DEBUG)
+
+class DCNetwork(Containernet):
"""
- Wraps the original Mininet/Dockernet class and provides
+ Wraps the original Mininet/Containernet class and provides
methods to add data centers, switches, etc.
This class is used by topology definition scripts.
dc_emulation_max_mem=512, # emulation max mem in MB
**kwargs):
"""
- Create an extended version of a Dockernet network
+ Create an extended version of a Containernet network
:param dc_emulation_max_cpu: max. CPU time used by containers in data centers
:param kwargs: path through for Mininet parameters
:return:
"""
+ # members
self.dcs = {}
+ self.ryu_process = None
+
+ # always cleanup environment before we start the emulator
+ self.killRyu()
+ cleanup()
# call original Docker.__init__ and setup default controller
- Dockernet.__init__(
+ Containernet.__init__(
self, switch=OVSKernelSwitch, controller=controller, **kwargs)
# Ryu management
- self.ryu_process = None
if controller == RemoteController:
# start Ryu controller
self.startRyu(learning_switch=enable_learning)
dc.net = self # set reference to network
self.dcs[label] = dc
dc.create() # finally create the data center in our Mininet instance
- logging.info("added data center: %s" % label)
+ LOG.info("added data center: %s" % label)
return dc
def addLink(self, node1, node2, **params):
"""
assert node1 is not None
assert node2 is not None
- logging.debug("addLink: n1=%s n2=%s" % (str(node1), str(node2)))
+ LOG.debug("addLink: n1=%s n2=%s" % (str(node1), str(node2)))
# ensure type of node1
if isinstance( node1, basestring ):
if node1 in self.dcs:
params["params2"]["ip"] = self.getNextIp()
# ensure that we allow TCLinks between data centers
# TODO this is not optimal, we use cls=Link for containers and TCLink for data centers
- # see Dockernet issue: https://github.com/mpeuster/dockernet/issues/3
+ # see Containernet issue: https://github.com/mpeuster/containernet/issues/3
if "cls" not in params:
params["cls"] = TCLink
- link = Dockernet.addLink(self, node1, node2, **params)
+ link = Containernet.addLink(self, node1, node2, **params)
# try to give container interfaces a default id
node1_port_id = node1.ports[link.intf1]
# add edge and assigned port number to graph in both directions between node1 and node2
# port_id: id given in descriptor (if available, otherwise same as port)
- # port: portnumber assigned by Dockernet
+ # port: portnumber assigned by Containernet
attr_dict = {}
# possible weight metrics allowed by TClink class:
Wrapper for addDocker method to use custom container class.
"""
self.DCNetwork_graph.add_node(label)
- return Dockernet.addDocker(self, label, cls=EmulatorCompute, **params)
+ return Containernet.addDocker(self, label, cls=EmulatorCompute, **params)
def removeDocker( self, label, **params ):
"""
Wrapper for removeDocker method to update graph.
"""
self.DCNetwork_graph.remove_node(label)
- return Dockernet.removeDocker(self, label, **params)
+ return Containernet.removeDocker(self, label, **params)
def addSwitch( self, name, add_to_graph=True, **params ):
"""
"""
if add_to_graph:
self.DCNetwork_graph.add_node(name)
- return Dockernet.addSwitch(self, name, protocols='OpenFlow10,OpenFlow12,OpenFlow13', **params)
+ return Containernet.addSwitch(self, name, protocols='OpenFlow10,OpenFlow12,OpenFlow13', **params)
def getAllContainers(self):
"""
# start
for dc in self.dcs.itervalues():
dc.start()
- Dockernet.start(self)
+ Containernet.start(self)
def stop(self):
self.monitor_agent.stop()
# stop emulator net
- Dockernet.stop(self)
+ Containernet.stop(self)
# stop Ryu controller
- self.stopRyu()
+ self.killRyu()
def CLI(self):
if cmd == 'add-flow':
ret = self._chainAddFlow(vnf_src_name, vnf_dst_name, vnf_src_interface, vnf_dst_interface, **kwargs)
if kwargs.get('bidirectional'):
- return ret +'\n' + self._chainAddFlow(vnf_dst_name, vnf_src_name, vnf_dst_interface, vnf_src_interface, **kwargs)
+ ret = ret +'\n' + self._chainAddFlow(vnf_dst_name, vnf_src_name, vnf_dst_interface, vnf_src_interface, **kwargs)
- elif cmd == 'del-flows': # TODO: del-flow to be implemented
+ elif cmd == 'del-flows':
ret = self._chainAddFlow(vnf_src_name, vnf_dst_name, vnf_src_interface, vnf_dst_interface, **kwargs)
if kwargs.get('bidirectional'):
- return ret + '\n' + self._chainAddFlow(vnf_dst_name, vnf_src_name, vnf_dst_interface, vnf_src_interface, **kwargs)
+ ret = ret + '\n' + self._chainAddFlow(vnf_dst_name, vnf_src_name, vnf_dst_interface, vnf_src_interface, **kwargs)
else:
- return "Command unknown"
+ ret = "Command unknown"
+
+ return ret
def _chainAddFlow(self, vnf_src_name, vnf_dst_name, vnf_src_interface=None, vnf_dst_interface=None, **kwargs):
- # TODO: this needs to be cleaned up
+ src_sw = None
+ dst_sw = None
+ src_sw_inport_nr = 0
+ dst_sw_outport_nr = 0
+
+ LOG.debug("call chainAddFlow vnf_src_name=%r, vnf_src_interface=%r, vnf_dst_name=%r, vnf_dst_interface=%r",
+ vnf_src_name, vnf_src_interface, vnf_dst_name, vnf_dst_interface)
+
#check if port is specified (vnf:port)
if vnf_src_interface is None:
# take first interface by default
for connected_sw in self.DCNetwork_graph.neighbors(vnf_src_name):
link_dict = self.DCNetwork_graph[vnf_src_name][connected_sw]
for link in link_dict:
- if link_dict[link]['src_port_id'] == vnf_src_interface:
+ if (link_dict[link]['src_port_id'] == vnf_src_interface or
+ link_dict[link]['src_port_name'] == vnf_src_interface): # Fix: we might also get interface names, e.g, from a son-emu-cli call
# found the right link and connected switch
src_sw = connected_sw
-
src_sw_inport_nr = link_dict[link]['dst_port_nr']
break
for connected_sw in self.DCNetwork_graph.neighbors(vnf_dst_name):
link_dict = self.DCNetwork_graph[connected_sw][vnf_dst_name]
for link in link_dict:
- if link_dict[link]['dst_port_id'] == vnf_dst_interface:
+ if link_dict[link]['dst_port_id'] == vnf_dst_interface or \
+ link_dict[link]['dst_port_name'] == vnf_dst_interface: # Fix: we might also get interface names, e.g, from a son-emu-cli call
# found the right link and connected switch
dst_sw = connected_sw
dst_sw_outport_nr = link_dict[link]['src_port_nr']
# if all shortest paths are wanted, use: all_shortest_paths
path = nx.shortest_path(self.DCNetwork_graph, src_sw, dst_sw, weight=kwargs.get('weight'))
except:
- logging.info("No path could be found between {0} and {1}".format(vnf_src_name, vnf_dst_name))
+ LOG.exception("No path could be found between {0} and {1} using src_sw={2} and dst_sw={3}".format(
+ vnf_src_name, vnf_dst_name, src_sw, dst_sw))
+ LOG.debug("Graph nodes: %r" % self.DCNetwork_graph.nodes())
+ LOG.debug("Graph edges: %r" % self.DCNetwork_graph.edges())
+ for e, v in self.DCNetwork_graph.edges():
+ LOG.debug("%r" % self.DCNetwork_graph[e][v])
return "No path could be found between {0} and {1}".format(vnf_src_name, vnf_dst_name)
- logging.info("Path between {0} and {1}: {2}".format(vnf_src_name, vnf_dst_name, path))
+ LOG.info("Path between {0} and {1}: {2}".format(vnf_src_name, vnf_dst_name, path))
current_hop = src_sw
switch_inport_nr = src_sw_inport_nr
if next_hop == vnf_dst_name:
switch_outport_nr = dst_sw_outport_nr
- logging.info("end node reached: {0}".format(vnf_dst_name))
+ LOG.info("end node reached: {0}".format(vnf_dst_name))
elif not isinstance( next_node, OVSSwitch ):
- logging.info("Next node: {0} is not a switch".format(next_hop))
+ LOG.info("Next node: {0} is not a switch".format(next_hop))
return "Next node: {0} is not a switch".format(next_hop)
else:
# take first link between switches by default
flow = {}
flow['dpid'] = int(node.dpid, 16)
- logging.info('node name:{0}'.format(node.name))
if cookie:
flow['cookie'] = int(cookie)
action['type'] = 'OUTPUT'
action['port'] = switch_outport_nr
flow['actions'].append(action)
- #flow['match'] = self._parse_match(match)
+
elif cmd == 'del-flows':
- #del(flow['actions'])
prefix = 'stats/flowentry/delete'
+
if cookie:
- flow['cookie_mask'] = cookie
- #if cookie is None:
- # flow['match'] = self._parse_match(match)
+ # TODO: add cookie_mask as argument
+ flow['cookie_mask'] = int('0xffffffffffffffff', 16) # need full mask to match complete cookie
action = {}
action['type'] = 'OUTPUT'
ofcmd = ''
node.dpctl(cmd, ofcmd)
- logging.info("{3} in switch: {0} in_port: {1} out_port: {2}".format(node.name, switch_inport_nr,
+ LOG.info("{3} in switch: {0} in_port: {1} out_port: {2}".format(node.name, switch_inport_nr,
switch_outport_nr, cmd))
# start Ryu Openflow controller as Remote Controller for the DCNetwork
if learning_switch:
self.ryu_process = Popen([ryu_cmd, ryu_path, ryu_path2, ryu_option, ryu_of_port], stdout=FNULL, stderr=FNULL)
else:
- # no learning switch
+ # no learning switch, but with rest api
self.ryu_process = Popen([ryu_cmd, ryu_path2, ryu_option, ryu_of_port], stdout=FNULL, stderr=FNULL)
time.sleep(1)
- def stopRyu(self):
+ def killRyu(self):
+ """
+ Stop the Ryu controller that might be started by son-emu.
+ :return:
+ """
+ # try it nicely
if self.ryu_process is not None:
self.ryu_process.terminate()
self.ryu_process.kill()
+ # ensure its death ;-)
+ Popen(['pkill', '-f', 'ryu-manager'])
def ryu_REST(self, prefix, dpid=None, data=None):
try:
else:
url = self.ryu_REST_api + '/' + str(prefix)
if data:
- #logging.info('POST: {0}'.format(str(data)))
+ #LOG.info('POST: {0}'.format(str(data)))
req = urllib2.Request(url, str(data))
else:
req = urllib2.Request(url)
ret = urllib2.urlopen(req).read()
return ret
except:
- logging.info('error url: {0}'.format(str(url)))
- if data: logging.info('error POST: {0}'.format(str(data)))
+ LOG.info('error url: {0}'.format(str(url)))
+ if data: LOG.info('error POST: {0}'.format(str(data)))
# need to respect that some match fields must be integers
# http://ryu.readthedocs.io/en/latest/app/ofctl_rest.html#description-of-match-and-actions
projects / osm / vim-emu.git / blobdiff