X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=src%2Femuvim%2Fdcemulator%2Fnet.py;h=3ded28ec70009b1a2e9648ccb7b23bc90322b4f7;hb=23c480906da46931b6f4350f3fb434a89f49227a;hp=8130f84739d872a76ae78dc5340d1c1441a0aa9c;hpb=a24b437787696be1285d631f8bcd361c4a54a95e;p=osm%2Fvim-emu.git diff --git a/src/emuvim/dcemulator/net.py b/src/emuvim/dcemulator/net.py index 8130f84..3ded28e 100755 --- a/src/emuvim/dcemulator/net.py +++ b/src/emuvim/dcemulator/net.py @@ -8,6 +8,9 @@ import site import time from subprocess import Popen import os +import re + + from mininet.net import Dockernet from mininet.node import Controller, DefaultController, OVSSwitch, OVSKernelSwitch, Docker, RemoteController @@ -26,7 +29,7 @@ class DCNetwork(Dockernet): This class is used by topology definition scripts. """ - def __init__(self, controller=RemoteController, + def __init__(self, controller=RemoteController, monitor=False, dc_emulation_max_cpu=1.0, # fraction of overall CPU time for emulation dc_emulation_max_mem=512, # emulation max mem in MB **kwargs): @@ -55,7 +58,10 @@ class DCNetwork(Dockernet): self.DCNetwork_graph = nx.MultiDiGraph() # monitoring agent - self.monitor_agent = DCNetworkMonitor(self) + if monitor: + self.monitor_agent = DCNetworkMonitor(self) + else: + self.monitor_agent = None # initialize resource model registrar self.rm_registrar = ResourceModelRegistrar( @@ -118,22 +124,46 @@ class DCNetwork(Dockernet): if isinstance(node1, Docker): if "id" in params["params1"]: node1_port_id = params["params1"]["id"] + node1_port_name = link.intf1.name node2_port_id = node2.ports[link.intf2] if isinstance(node2, Docker): if "id" in params["params2"]: node2_port_id = params["params2"]["id"] + node2_port_name = link.intf2.name + # 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 - self.DCNetwork_graph.add_edge(node1.name, node2.name, - attr_dict={'src_port_id': node1_port_id, 'src_port': node1.ports[link.intf1], - 'dst_port_id': node2_port_id, 'dst_port': node2.ports[link.intf2]}) - self.DCNetwork_graph.add_edge(node2.name, node1.name, - attr_dict={'src_port_id': node2_port_id, 'src_port': node2.ports[link.intf2], - 'dst_port_id': node1_port_id, 'dst_port': node1.ports[link.intf1]}) + attr_dict = {} + # possible weight metrics allowed by TClink class: + weight_metrics = ['bw', 'delay', 'jitter', 'loss'] + edge_attributes = [p for p in params if p in weight_metrics] + for attr in edge_attributes: + # if delay: strip ms (need number as weight in graph) + match = re.search('([0-9]*\.?[0-9]+)', params[attr]) + if match: + attr_number = match.group(1) + else: + attr_number = None + attr_dict[attr] = attr_number + + + attr_dict2 = {'src_port_id': node1_port_id, 'src_port_nr': node1.ports[link.intf1], + 'src_port_name': node1_port_name, + 'dst_port_id': node2_port_id, 'dst_port_nr': node2.ports[link.intf2], + 'dst_port_name': node2_port_name} + attr_dict2.update(attr_dict) + self.DCNetwork_graph.add_edge(node1.name, node2.name, attr_dict=attr_dict2) + + attr_dict2 = {'src_port_id': node2_port_id, 'src_port_nr': node2.ports[link.intf2], + 'src_port_name': node2_port_name, + 'dst_port_id': node1_port_id, 'dst_port_nr': node1.ports[link.intf1], + 'dst_port_name': node1_port_name} + attr_dict2.update(attr_dict) + self.DCNetwork_graph.add_edge(node2.name, node1.name, attr_dict=attr_dict2) return link @@ -175,34 +205,44 @@ class DCNetwork(Dockernet): Dockernet.start(self) def stop(self): - # stop Ryu controller + + # stop the monitor agent + if self.monitor_agent is not None: + self.monitor_agent.stop() + + # stop emulator net Dockernet.stop(self) + + # stop Ryu controller self.stopRyu() + def CLI(self): CLI(self) # to remove chain do setChain( src, dst, cmd='del-flows') - def setChain(self, vnf_src_name, vnf_dst_name, vnf_src_interface=None, vnf_dst_interface=None, cmd='add-flow'): + def setChain(self, vnf_src_name, vnf_dst_name, vnf_src_interface=None, vnf_dst_interface=None, cmd='add-flow', + weight=None, **kwargs): + logging.info('vnf_src_if: {0}'.format(vnf_src_interface)) #check if port is specified (vnf:port) if vnf_src_interface is None: # take first interface by default connected_sw = self.DCNetwork_graph.neighbors(vnf_src_name)[0] link_dict = self.DCNetwork_graph[vnf_src_name][connected_sw] vnf_src_interface = link_dict[0]['src_port_id'] - #vnf_source_interface = 0 + #logging.info('vnf_src_if: {0}'.format(vnf_src_interface)) 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: - #logging.info("{0},{1}".format(link_dict[link],vnf_source_interface)) + #logging.info("here1: {0},{1}".format(link_dict[link],vnf_src_interface)) if link_dict[link]['src_port_id'] == vnf_src_interface: # found the right link and connected switch - #logging.info("{0},{1}".format(link_dict[link]['src_port_id'], vnf_source_interface)) + #logging.info("conn_sw: {2},{0},{1}".format(link_dict[link]['src_port_id'], vnf_src_interface, connected_sw)) src_sw = connected_sw - src_sw_inport = link_dict[link]['dst_port'] + src_sw_inport_nr = link_dict[link]['dst_port_nr'] break if vnf_dst_interface is None: @@ -210,7 +250,6 @@ class DCNetwork(Dockernet): connected_sw = self.DCNetwork_graph.neighbors(vnf_dst_name)[0] link_dict = self.DCNetwork_graph[connected_sw][vnf_dst_name] vnf_dst_interface = link_dict[0]['dst_port_id'] - #vnf_dest_interface = 0 vnf_dst_name = vnf_dst_name.split(':')[0] for connected_sw in self.DCNetwork_graph.neighbors(vnf_dst_name): @@ -219,14 +258,16 @@ class DCNetwork(Dockernet): if link_dict[link]['dst_port_id'] == vnf_dst_interface: # found the right link and connected switch dst_sw = connected_sw - dst_sw_outport = link_dict[link]['src_port'] + dst_sw_outport_nr = link_dict[link]['src_port_nr'] break # get shortest path #path = nx.shortest_path(self.DCNetwork_graph, vnf_src_name, vnf_dst_name) try: - path = nx.shortest_path(self.DCNetwork_graph, src_sw, dst_sw) + # returns the first found shortest path + # if all shortest paths are wanted, use: all_shortest_paths + path = nx.shortest_path(self.DCNetwork_graph, src_sw, dst_sw, weight=weight) except: logging.info("No path could be found between {0} and {1}".format(vnf_src_name, vnf_dst_name)) return "No path could be found between {0} and {1}".format(vnf_src_name, vnf_dst_name) @@ -235,7 +276,7 @@ class DCNetwork(Dockernet): #current_hop = vnf_src_name current_hop = src_sw - switch_inport = src_sw_inport + switch_inport_nr = src_sw_inport_nr for i in range(0,len(path)): current_node = self.getNodeByName(current_hop) @@ -248,7 +289,7 @@ class DCNetwork(Dockernet): next_node = self.getNodeByName(next_hop) if next_hop == vnf_dst_name: - switch_outport = dst_sw_outport + switch_outport_nr = dst_sw_outport_nr logging.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)) @@ -256,27 +297,30 @@ class DCNetwork(Dockernet): else: # take first link between switches by default index_edge_out = 0 - switch_outport = self.DCNetwork_graph[current_hop][next_hop][index_edge_out]['src_port'] - - # take into account that multiple edges are possible between 2 nodes - index_edge_in = 0 + switch_outport_nr = self.DCNetwork_graph[current_hop][next_hop][index_edge_out]['src_port_nr'] - #switch_inport = self.DCNetwork_graph[current_hop][next_hop][index_edge_in]['dst_port'] - - #next2_hop = path[path.index(current_hop)+2] - #index_edge_out = 0 - #switch_outport = self.DCNetwork_graph[next_hop][next2_hop][index_edge_out]['src_port'] - #switch_outport = self.DCNetwork_graph[current_hop][next_hop][index_edge_out]['src_port'] - - #logging.info("add flow in switch: {0} in_port: {1} out_port: {2}".format(current_node.name, switch_inport, switch_outport)) + #logging.info("add flow in switch: {0} in_port: {1} out_port: {2}".format(current_node.name, switch_inport_nr, switch_outport_nr)) # set of entry via ovs-ofctl - # TODO use rest API of ryu to set flow entries to correct witch dpid + # TODO use rest API of ryu to set flow entries to correct dpid + # TODO this only sets port in to out, no match, so this will give trouble when multiple services are deployed... + # TODO need multiple matches to do this (VLAN tags) if isinstance( current_node, OVSSwitch ): - match = 'in_port=%s' % switch_inport + match_input = kwargs.get('match') + self._set_flow_entry_dpctl(current_node, switch_inport_nr, switch_outport_nr, match_input, cmd) + if kwargs.get('bidirectional'): + self._set_flow_entry_dpctl(current_node, switch_outport_nr, switch_inport_nr, match_input, cmd) + ''' + match = 'in_port=%s' % switch_inport_nr + #add additional match entries from the argument + match_input = kwargs.get('match') + #logging.info('match input:{0}'.format(match_input)) + if match_input: + s = ',' + match = s.join([match,match_input]) if cmd=='add-flow': - action = 'action=%s' % switch_outport + action = 'action=%s' % switch_outport_nr s = ',' ofcmd = s.join([match,action]) elif cmd=='del-flows': @@ -285,16 +329,39 @@ class DCNetwork(Dockernet): ofcmd='' current_node.dpctl(cmd, ofcmd) - logging.info("add flow in switch: {0} in_port: {1} out_port: {2}".format(current_node.name, switch_inport, - switch_outport)) + logging.info("add flow in switch: {0} in_port: {1} out_port: {2}".format(current_node.name, switch_inport_nr, + switch_outport_nr)) + ''' # take first link between switches by default if isinstance( next_node, OVSSwitch ): - switch_inport = self.DCNetwork_graph[current_hop][next_hop][0]['dst_port'] + switch_inport_nr = self.DCNetwork_graph[current_hop][next_hop][0]['dst_port_nr'] current_hop = next_hop return "path added between {0} and {1}".format(vnf_src_name, vnf_dst_name) #return "destination node: {0} not reached".format(vnf_dst_name) + def _set_flow_entry_dpctl(self, node, switch_inport_nr, switch_outport_nr, match_input, cmd): + match = 'in_port=%s' % switch_inport_nr + # add additional match entries from the argument + #match_input = kwargs.get('match') + # logging.info('match input:{0}'.format(match_input)) + if match_input: + s = ',' + match = s.join([match, match_input]) + + if cmd == 'add-flow': + action = 'action=%s' % switch_outport_nr + s = ',' + ofcmd = s.join([match, action]) + elif cmd == 'del-flows': + ofcmd = match + else: + ofcmd = '' + + node.dpctl(cmd, ofcmd) + logging.info("add flow in switch: {0} in_port: {1} out_port: {2}".format(node.name, switch_inport_nr, + switch_outport_nr)) + # start Ryu Openflow controller as Remote Controller for the DCNetwork def startRyu(self): # start Ryu controller with rest-API