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SFC_design.py
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SFC_design.py
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# conding=utf-8
import logging
import struct
import itertools
import time
from operator import attrgetter
from ryu.base import app_manager
from ryu.controller import ofp_event
from ryu.controller.handler import MAIN_DISPATCHER, DEAD_DISPATCHER
from ryu.controller.handler import CONFIG_DISPATCHER
from ryu.controller.handler import set_ev_cls
from ryu.ofproto import ofproto_v1_3
from ryu.lib.packet import packet
from ryu.lib.packet import ethernet
from ryu.lib.packet import ipv4
from ryu.lib.packet import arp
from ryu.lib.packet import ether_types as ether
from ryu.lib import hub
from ryu.topology import event, switches
from ryu.topology.api import get_switch, get_link
import network_aware
import network_monitor
from Create4inputfile import Ryutopoinfo
from run__MC_ICC16_Alg1 import Run___MC_ICC16_Alg
class SFC_design(app_manager.RyuApp):
OFP_VERSIONS = [ofproto_v1_3.OFP_VERSION]
_CONTEXTS = {
"Network_Aware": network_aware.Network_Aware,
"Network_Monitor": network_monitor.Network_Monitor,
}
def __init__(self, *args, **kwargs):
super(SFC_design, self).__init__(*args, **kwargs)
self.network_aware = kwargs["Network_Aware"]
self.network_monitor = kwargs["Network_Monitor"]
###############################################################################################################
self.mac_to_port = {}
self.datapaths = {}
self.link_to_port = self.network_aware.link_to_port## links :(src_dpid,dst_dpid)->(src_port,dst_port)
self.access_table = self.network_aware.access_table## {sw1,port1 :host1_ip}
self.access_ports = self.network_aware.access_ports## dpid->port_num (ports without link)
self.graph = self.network_aware.graph
self.NF = {} ###{'IPS': ['IPS1'], 'LB': ['LB1', 'LB2'], 'IDS': ['IDS1', 'IDS2'], 'FW': ['FW1', 'FW2']}
self.NF_ConnSw = {} ###{'LB1': '5', 'LB2': '6', 'IPS1': '7', 'IDS2': '4', 'FW1': '1', 'FW2': '3', 'IDS1': '2'}
self.HD_SFC_index = {} ###{('10.0.0.2', '10.0.0.4'): 1, ('10.0.0.3', '10.0.0.5'): 0, ('10.0.0.1', '10.0.0.5'): 0}
self.SFC = {} ###{0: ['FW', 'IDS', 'LB'], 1: ['IPS', 'IDS', 'LB']}
self.Sw_NF_Port = {}###Sw_NF_Port[dpid] = NF_Port
self.Sw_Host_Port = {} ###Sw_Host_Port[swdpid,hostip] = port
self.SFC_All_Component = {}###{0: [('FW1', 'IDS1', 'LB1'), ('FW1', 'IDS1', 'LB2'), ('FW1', 'IDS2', 'LB1'), ('FW1', 'IDS2', 'LB2'), ('FW2','IDS1','LB1'), ('FW2', 'IDS1', 'LB2'), ('FW2', 'IDS2', 'LB1'), ('FW2', 'IDS2', 'LB2')], 1: [('IPS1', 'IDS1', 'LB1'), ('IPS1', 'IDS1', 'LB2'), ('IPS1', 'IDS2', 'LB1'), ('IPS1', 'IDS2', 'LB2')]}
self.SFC_All_Component_convert_NF_TO_ConSw = {}###{0: [['1', '2', '5'], ['1', '2', '6'], ['1', '4', '5'], ['1', '4', '6'], ['3', '2', '5'], ['3', '2', '6'], ['3', '4', '5'], ['3', '4', '6']], 1: [['7', '2', '5'], ['7', '2', '6'], ['7', '4', '5'], ['7', '4', '6']]}
self.SFC_All_detail_pathes = {}####{0:[[[[path1121],[path1122],[path1123]],[[path1231],[path1232],[path1233]]],[[[path2121],[path2122],[path2123]],[[path2231],[path2232],[path2233]]].....],1:[[[[path1121],[path1122],[path1123]],[[path1231],[path1232],[path1233]]],[[[path2121],[path2122],[path2123]],[[path2231],[path2232],[path2233]]].....]}
self.SFC_All_detail_path = {}###{0:[[[path1121],[path1232]],[[path2122],[path2231]].....],1:[[[path1121],[path1232]],[[path2122],[path2231]]....]}
self.SFC_Best_Component_Path = {}###{0:[[path1121],[path1232]],1:[[path2122],[path2231]]]
self.SFC_Best_Component = {}###{0:[['FW1', 'IDS1'],[ 'IDS1','LB1']],1:[['IPS1', 'IDS1'],[ 'IDS1','LB1']]}
self.HD_Complete_Path = {}###{('10.0.0.2', '10.0.0.4'): [component_pathlist], ('10.0.0.3', '10.0.0.5'): [component_pathlist], ('10.0.0.1','10.0.0.5'): [component_pathlist]}
self.HD_Access_Sw = {}###{('10.0.0.1'): 5, ('10.0.0.2'): 4,('10.0.0.3'): 3,('10.0.0.4'): 2,('10.0.0.5'): 1}
self.NF_Switch = {}###NF_Switch[dpid]:port
self.SFC_Mpls_Label_Set = {}### SFC_Mpls_Label_Set[1]:[label1,label2,label3.....]
self.based_label = 0
## --- Define two rule-related parameters
self.priority = 10 ## This parameter indicates the priority of rules
self.hardTimeOut_of_a_solution = 120 ## This parameter indicates the hard_timeout of rules
self.usemypath = False## The trigger to start-running of Alg1.
## --- Define log-files :
self.Log_debug = open('SFC_design_log_file.txt','w');
self.apprun_thread = hub.spawn(self._apprun)## Begin to run.
self.Log_debug.write("=========== SFC_design app is ready! ==========\n")
self.Log_debug.flush()
##############################################################################################################################################
def set_data(self):
with open("HD_info.txt",'r') as f1:
sfc_index = 0
for lines in f1:
line=lines.strip('\n')
lineContent = line.split('\t')
SrcipConent = str(lineContent[0]);
DstipConent = str(lineContent[1]);
SfCConent= str(lineContent[2]);
One_path = [];
SfC = SfCConent.split(":")
pathContent = SfC[1].split(">")
for i in range(0,len(pathContent),1):
One_path.append(str(pathContent[i]))
SrcIp = SrcipConent.split(":")
DstIp = DstipConent.split(":")
srcip = SrcIp[1]
dstip = DstIp[1]
###self.access_table:{sw1,port1:[host1_ip] sw1,port2:[host2_ip]}
if srcip not in self.HD_Access_Sw.keys(): ##set HD_Access_Sw
for key,value in self.access_table.items():
if value == srcip:
self.HD_Access_Sw[srcip] = key[0]
break
if dstip not in self.HD_Access_Sw.keys():
for key,value in self.access_table.items():
if value == dstip:
self.HD_Access_Sw[dstip] = key[0]
break
if One_path not in self.SFC.values():
self.SFC[sfc_index] = One_path ##set SFC
sfc_index+=1
for key,value in self.SFC.items():
if value == One_path:
self.HD_SFC_index[srcip,dstip] = key ##set HD_SFC_index
self.Log_debug.write("HD_Access_Sw: "+str(self.HD_Access_Sw)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
self.Log_debug.write("SFC: "+str(self.SFC)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
self.Log_debug.write("HD_SFC_index: "+str(self.HD_SFC_index)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
with open("NF_info.txt",'r') as f2:
for lines in f2:
line=lines.strip('\n')
lineContent = line.split('\t')
NFTypeConent = str(lineContent[0]);
NFNameConent = str(lineContent[1]);
NFConnSwConent = str(lineContent[2]);
Sw_NF_PortConent = str(lineContent[3]);
NFType = NFTypeConent.split(":")
if NFType[1] not in self.NF.keys():
self.NF[NFType[1]] = []
NFName = NFNameConent.split(":")
if NFName[1] not in self.NF[NFType[1]]:
self.NF[NFType[1]].append(NFName[1]) ##set NF
NFConnSw = NFConnSwConent.split(":")
self.NF_ConnSw[NFName[1]] = NFConnSw[1] ##set NF_ConnSw
sw_NF_Port = Sw_NF_PortConent.split(":")
self.Sw_NF_Port[NFConnSw[1]] = int(sw_NF_Port[1])###set Sw_NF_Port
self.Log_debug.write("NF: "+str(self.NF)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
self.Log_debug.write("NF_ConnSw: "+str(self.NF_ConnSw)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
self.Log_debug.write("Sw_NF_Port: "+str(self.Sw_NF_Port)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
for key,value in self.SFC.items():
self.SFC_All_Component[key] = self.cal_all_component_by_SFCList(value) ##set SFC_All_Component
self.Log_debug.write("SFC_All_Component: "+str(self.SFC_All_Component)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
for key,value in self.SFC_All_Component.items():##set SFC_All_Component_convert_NF_TO_ConSw
self.SFC_All_Component_convert_NF_TO_ConSw[key] = []
for sfclist in value:
convert_NF_TO_ConSw_list = []
for sfc in sfclist:
convert_NF_TO_ConSw_list.append(self.NF_ConnSw[sfc])
self.SFC_All_Component_convert_NF_TO_ConSw[key].append(convert_NF_TO_ConSw_list)
self.Log_debug.write("SFC_All_Component_convert_NF_TO_ConSw: "+str(self.SFC_All_Component_convert_NF_TO_ConSw)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
for key,value in self.SFC_All_Component_convert_NF_TO_ConSw.items():###set SFC_All_detail_pathes
self.SFC_All_detail_pathes[key] = []
for sfcConSwList in value:
i=0
sfc_all_detail_path = []
if(len(sfcConSwList) == 1):
sfc_all_detail_path.append(self.network_aware.getAllPath(sfcConSwList[i],sfcConSwList[i]))
else:
while(i+1<len(sfcConSwList)):
sfc_all_detail_path.append(self.network_aware.getAllPath(sfcConSwList[i],sfcConSwList[i+1]))
i = i +1
self.SFC_All_detail_pathes[key].append(sfc_all_detail_path)
self.Log_debug.write("SFC_All_detail_pathes: "+str(self.SFC_All_detail_pathes)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
for key,value in self.SFC_All_detail_pathes.items():###set SFC_All_detail_path
self.SFC_All_detail_path[key] = []
for pathes_list in value:
one_path = []
for componet_pathes in pathes_list:
if(len(componet_pathes)<=1):
one_path.append(componet_pathes[0])
else:
one_path.append(self.get_max_speed_path_of_pathes(componet_pathes))
self.SFC_All_detail_path[key].append(one_path)
self.Log_debug.write("SFC_All_detail_path: "+str(self.SFC_All_detail_path)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
for key,value in self.SFC_All_detail_path.items():
speedlist = []
for one_component_path in value:
speed = float("inf")
i = 0
while(i<len(one_component_path)):
pathspeed = self.get_max_speed_of_one_path(one_component_path[i])
if pathspeed <= speed:
speed = pathspeed
i = i +1
speedlist.append(speed)
maxspeed = 0
j = 0
index = j
while(j<len(speedlist)):
if(speedlist[j] >= maxspeed):
maxspeed = speedlist[j]
index = j
j = j + 1
path = value[index]
self.SFC_Best_Component_Path[key] = path ###set SFC_Best_Component_Path
k = 0
sw_list = []
if(len(self.SFC[key])<=1):
for key1,value1 in self.NF_ConnSw.items():
for key2,value2 in self.NF.items():
if key1 in value2:
if key2 == self.SFC[key][k]:
if str(value1) == str(path[k][0]):
sw_list.append(key1)
break
else:
while(k<len(self.SFC[key])-1):
for key1,value1 in self.NF_ConnSw.items():
for key2,value2 in self.NF.items():
if key1 in value2:
if key2 == self.SFC[key][k]:
if str(value1) == str(path[k][0]):
sw_list.append(key1)
break
k = k+1
for key1,value1 in self.NF_ConnSw.items():
for key2,value2 in self.NF.items():
if key1 in value2:
if key2 == self.SFC[key][k]:
if str(value1) == str(path[k-1][-1]):
sw_list.append(key1)
break
self.SFC_Best_Component[key] = sw_list###set SFC_Best_Component
self.Log_debug.write("SFC_Best_Component_Path: "+str(self.SFC_Best_Component_Path)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
self.Log_debug.write("SFC_Best_Component: "+str(self.SFC_Best_Component)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
for key,value in self.access_table.items():
swdpid = key[0]
port = key[1]
hostip = value
self.Sw_Host_Port[swdpid,hostip] = port
self.Log_debug.write("Sw_Host_Port: "+str(self.Sw_Host_Port)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
##########################################################################################################################################
for key,value in self.HD_SFC_index.items():###set HD_Complete_Path
HDip = list(key)
complete_path = []
##HD_Access_Sw: {'10.0.0.5': 9, '10.0.0.4': 8, '10.0.0.7': 2, '10.0.0.6': 6, '10.0.0.1': 1, '10.0.0.3': 3, '10.0.0.2': 2}
complete_path.append(self.get_max_speed_path_of_pathes(self.network_aware.getAllPath(self.HD_Access_Sw[HDip[0]],self.SFC_Best_Component_Path[value][0][0])))
for partpath in self.SFC_Best_Component_Path[value]:
complete_path.append(partpath)
complete_path.append(self.get_max_speed_path_of_pathes(self.network_aware.getAllPath(self.SFC_Best_Component_Path[value][-1][-1],self.HD_Access_Sw[HDip[1]])))
self.HD_Complete_Path[key] = complete_path
self.Log_debug.write("HD_Complete_Path: "+str(self.HD_Complete_Path)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
self.Log_debug.write("datapaths: "+str(self.datapaths)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
for key1,value1 in self.Sw_NF_Port.items():
for key2,value2 in self.link_to_port.items():
swdpid = key2[0]
swport = value2[0]
nfdpid = key2[1]
nfport = value2[1]
if int(key1) == swdpid and int(value1) == swport:
self.NF_Switch[nfdpid] = nfport ###set NF_Switch
self.Log_debug.write("NF_Switch "+str(self.NF_Switch)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
##########################################################################################################################################
def design_flow_rule(self):
eth_IP = ether.ETH_TYPE_IP
eth_MPLS = ether.ETH_TYPE_MPLS
if self.datapaths and self.SFC_Best_Component_Path and self.Sw_NF_Port and self.Sw_Host_Port and self.HD_Access_Sw and self.HD_Complete_Path and self.link_to_port:
####################################################SFC-flow-rule######################################################
for key,value in self.SFC_Best_Component_Path.items():
i = 0
self.SFC_Mpls_Label_Set[key] = []
self.based_label = self.based_label + 1
self.SFC_Mpls_Label_Set[key].append(self.based_label)
while(i < len(value)):
if len(value[i]) <= 1:###have only one NF or there are two NF linked to one same switch
pass
else:
j = 0
while j < len(value[i]):
if j == 0:###the first NF switch
dpid = value[i][j]
nextdpid = value[i][j+1]
dp = self.datapaths[dpid]
in_port = self.Sw_NF_Port[str(dpid)]
label = self.based_label
out_port = self.link_to_port[dpid,nextdpid][0]
match = dp.ofproto_parser.OFPMatch(
in_port=in_port,
eth_type=eth_MPLS,
mpls_label=label)
self.based_label = self.based_label + 1
label = self.based_label
self.SFC_Mpls_Label_Set[key].append(label)
f = dp.ofproto_parser.OFPMatchField.make(
dp.ofproto.OXM_OF_MPLS_LABEL, label)
actions = [dp.ofproto_parser.OFPActionPopMpls(eth_IP),
dp.ofproto_parser.OFPActionPushMpls(eth_MPLS),
dp.ofproto_parser.OFPActionSetField(f),
dp.ofproto_parser.OFPActionOutput(out_port, 0)]
self.add_flow(dp, 10, match, actions, 0, False, idle_timeout=3600, hard_timeout=3600)
elif j == len(value[i]) - 1:###the last NF switch
dpid = value[i][j]
predpid = value[i][j-1]
dp = self.datapaths[dpid]
in_port = self.link_to_port[predpid,dpid][1]
out_port = self.Sw_NF_Port[str(dpid)]
label = self.based_label
match = dp.ofproto_parser.OFPMatch(
in_port=in_port,
eth_type=eth_MPLS,
mpls_label=label)
actions = [dp.ofproto_parser.OFPActionOutput(out_port, 0)]
self.add_flow(dp, 10, match, actions, 0, False, idle_timeout=3600, hard_timeout=3600)
else:###middle NF switches
dpid = value[i][j]
predpid = value[i][j-1]
nextdpid = value[i][j+1]
dp = self.datapaths[dpid]
in_port = self.link_to_port[predpid,dpid][1]
out_port = self.link_to_port[dpid,nextdpid][0]
label = self.based_label
match = dp.ofproto_parser.OFPMatch(
in_port=in_port,
eth_type=eth_MPLS,
mpls_label=label)
actions = [dp.ofproto_parser.OFPActionOutput(out_port, 0)]
self.add_flow(dp, 10, match, actions, 0, False, idle_timeout=3600, hard_timeout=3600)
j = j + 1
i = i+1
##############################################Host-Margainal-NFSw-flow-rule#########################################
for key,value in self.HD_Complete_Path.items():###for every (srcip.dstip):[Host_To_SFC_path_list,SFC_path_list,SFC_To_Host_path_list]
sfcindex = self.HD_SFC_index[key]
push_label = self.SFC_Mpls_Label_Set[sfcindex][0]
pop_label = self.SFC_Mpls_Label_Set[sfcindex][-1]
srcip = key[0]
dstip = key[1]
Host_To_SFC = value[0]
SFC_To_Host = value[-1]
i = 0
while i<len(Host_To_SFC):
if(len(Host_To_SFC)<=1):###the first NF switch is also the access switch
dpid = Host_To_SFC[i]
dp = self.datapaths[dpid]
in_port = self.Sw_Host_Port[dpid,srcip]
out_port = self.Sw_NF_Port[str(dpid)]
match = dp.ofproto_parser.OFPMatch(
in_port=in_port,
eth_type=eth_IP,
ipv4_src=srcip,
ipv4_dst=dstip)
f = dp.ofproto_parser.OFPMatchField.make(dp.ofproto.OXM_OF_MPLS_LABEL, push_label)
actions = [dp.ofproto_parser.OFPActionPushMpls(eth_MPLS),
dp.ofproto_parser.OFPActionSetField(f),
dp.ofproto_parser.OFPActionOutput(out_port, 0)]
self.add_flow(dp, 10, match, actions, 0, False, idle_timeout=3600, hard_timeout=3600)
else:
if i == 0:###the fist access switch
dpid = Host_To_SFC[i]
nextdpid = Host_To_SFC[i+1]
dp = self.datapaths[dpid]
in_port = self.Sw_Host_Port[dpid,srcip]
out_port = self.link_to_port[dpid,nextdpid][0]
match = dp.ofproto_parser.OFPMatch(
in_port=in_port,
eth_type=eth_IP,
ipv4_src=srcip,
ipv4_dst=dstip)
actions = [dp.ofproto_parser.OFPActionOutput(out_port, 0)]
self.add_flow(dp, 10, match, actions, 0, False, idle_timeout=3600, hard_timeout=3600)
elif i == len(Host_To_SFC)-1:###the last switch in the Host_To_SFC list(is also the access-SFC switch)
dpid = Host_To_SFC[i]
predpid = Host_To_SFC[i-1]
dp = self.datapaths[dpid]
in_port = self.link_to_port[predpid,dpid][1]
out_port = self.Sw_NF_Port[str(dpid)]
match = dp.ofproto_parser.OFPMatch(
in_port=in_port,
eth_type=eth_IP,
ipv4_src=srcip,
ipv4_dst=dstip)
f = dp.ofproto_parser.OFPMatchField.make(dp.ofproto.OXM_OF_MPLS_LABEL, push_label)
actions = [dp.ofproto_parser.OFPActionPushMpls(eth_MPLS),
dp.ofproto_parser.OFPActionSetField(f),
dp.ofproto_parser.OFPActionOutput(out_port, 0)]
self.add_flow(dp, 10, match, actions, 0, False, idle_timeout=3600, hard_timeout=3600)
else:###the middle switches in the Host_To_SFC list
dpid = Host_To_SFC[i]
predpid = Host_To_SFC[i-1]
nextdpid = Host_To_SFC[i+1]
dp = self.datapaths[dpid]
in_port = self.link_to_port[predpid,dpid][1]
out_port = self.link_to_port[dpid,nextdpid][0]
match = dp.ofproto_parser.OFPMatch(
in_port=in_port,
eth_type=eth_IP,
ipv4_src=srcip,
ipv4_dst=dstip)
actions = [dp.ofproto_parser.OFPActionOutput(out_port, 0)]
self.add_flow(dp, 10, match, actions, 0, False, idle_timeout=3600, hard_timeout=3600)
i = i+1
j = 0
while j<len(SFC_To_Host):
if(len(SFC_To_Host)<=1):###the first outgress NF switch is also the access switch
dpid = SFC_To_Host[j]
dp = self.datapaths[dpid]
in_port = self.Sw_NF_Port[str(dpid)]
out_port = self.Sw_Host_Port[dpid,dstip]
match = dp.ofproto_parser.OFPMatch(
in_port=in_port,
eth_type=eth_MPLS,
mpls_label=pop_label)
actions = [dp.ofproto_parser.OFPActionPopMpls(eth_IP)]
self.add_flow(dp, 10, match, actions, 0, True, idle_timeout=3600, hard_timeout=3600)
match = dp.ofproto_parser.OFPMatch(
eth_type=eth_IP,
ipv4_src=srcip,
ipv4_dst=dstip)
actions = [dp.ofproto_parser.OFPActionOutput(out_port, 0)]
self.add_flow(dp, 10, match, actions, 1, False, idle_timeout=3600, hard_timeout=3600)
else:
if j == 0:###the fist outgress switch
dpid = SFC_To_Host[j]
nextdpid = SFC_To_Host[j+1]
dp = self.datapaths[dpid]
in_port = self.Sw_NF_Port[str(dpid)]
out_port = self.link_to_port[dpid,nextdpid][0]
match = dp.ofproto_parser.OFPMatch(
in_port=in_port,
eth_type=eth_MPLS,
mpls_label=pop_label)
actions = [dp.ofproto_parser.OFPActionPopMpls(eth_IP)]
self.add_flow(dp, 10, match, actions, 0, True, idle_timeout=3600, hard_timeout=3600)
match = dp.ofproto_parser.OFPMatch(
eth_type=eth_IP,
ipv4_src=srcip,
ipv4_dst=dstip)
actions = [dp.ofproto_parser.OFPActionOutput(out_port, 0)]
self.add_flow(dp, 10, match, actions, 1, False, idle_timeout=3600, hard_timeout=3600)
elif j == len(SFC_To_Host)-1:###the last switch in the SFC_To_Host list
dpid = SFC_To_Host[j]
predpid = SFC_To_Host[j-1]
dp = self.datapaths[dpid]
in_port = self.link_to_port[predpid,dpid][1]
out_port = self.Sw_Host_Port[dpid,dstip]
match = dp.ofproto_parser.OFPMatch(
in_port=in_port,
eth_type=eth_IP,
ipv4_src=srcip,
ipv4_dst=dstip)
actions = [dp.ofproto_parser.OFPActionOutput(out_port, 0)]
self.add_flow(dp, 10, match, actions, 0, False, idle_timeout=3600, hard_timeout=3600)
else:###the middle switches in the SFC_To_Host list
dpid = SFC_To_Host[j]
predpid = SFC_To_Host[j-1]
nextdpid = SFC_To_Host[j+1]
dp = self.datapaths[dpid]
in_port = self.link_to_port[predpid,dpid][1]
out_port = self.link_to_port[dpid,nextdpid][0]
match = dp.ofproto_parser.OFPMatch(
in_port=in_port,
eth_type=eth_IP,
ipv4_src=srcip,
ipv4_dst=dstip)
actions = [dp.ofproto_parser.OFPActionOutput(out_port, 0)]
self.add_flow(dp, 10, match, actions, 0, False, idle_timeout=3600, hard_timeout=3600)
j = j+1
####################################################simply-implement-the-NF######################################################
for key,value in self.NF_Switch.items():
dpid = key
dp = self.datapaths[dpid]
in_port = value
out_port = value
match = dp.ofproto_parser.OFPMatch(in_port=in_port,
eth_type=eth_MPLS)
actions = [dp.ofproto_parser.OFPActionOutput(dp.ofproto.OFPP_IN_PORT,0)]
self.add_flow(dp, 10, match, actions, 0, False, idle_timeout=3600, hard_timeout=3600)
self.Log_debug.write("self.SFC_Mpls_Label_Set "+str(self.SFC_Mpls_Label_Set)+"\n")
self.Log_debug.flush()
self.Log_debug.write("\n")
self.Log_debug.flush()
def cal_all_component_by_SFCList(self,SFClist):###now it supports to cal max 6 of the length of sfclist
length = len(SFClist)
all_component = []
if(length ==1):
all_component = itertools.product(self.NF[SFClist[0]])
elif(length ==2):
all_component = itertools.product(self.NF[SFClist[0]],self.NF[SFClist[1]])
elif(length ==3):
all_component = itertools.product(self.NF[SFClist[0]],self.NF[SFClist[1]],self.NF[SFClist[2]])
elif(length ==4):
all_component = itertools.product(self.NF[SFClist[0]],self.NF[SFClist[1]],self.NF[SFClist[2]],self.NF[SFClist[3]])
elif(length ==5):
all_component = itertools.product(self.NF[SFClist[0]],self.NF[SFClist[1]],self.NF[SFClist[2]],self.NF[SFClist[3]],self.NF[SFClist[4]])
elif(length ==6):
all_component = itertools.product(self.NF[SFClist[0]],self.NF[SFClist[1]],self.NF[SFClist[2]],self.NF[SFClist[3]],self.NF[SFClist[4]],self.NF[SFClist[5]])
else:
pass
return list(all_component)
###############################################################################################################################################
##get the link speed between switch1 and switch2
def get_link_speed(self,switch1_dpid,switch2_dpid):
port1=self.link_to_port[(switch1_dpid,switch2_dpid)][0]
link_speed = self.network_monitor.get_port_speed(switch1_dpid,port1)
return link_speed
####################################################################################################################################
##equal to the min-capacity of one_path path--eg:{switch1,switch5,switch3,....}
def get_max_speed_of_one_path(self,path):
i=0
maxspeed = 0
if(len(path)<=1):
maxspeed = float("inf")
return maxspeed
while(i+1<len(path)):
linkspeed = self.get_link_speed(path[i],path[i+1])
if maxspeed < linkspeed:
maxspeed = linkspeed
i = i + 1
return maxspeed
###################################################################################################################
##get the max-capacity path between pathes pathes--eg:{(pathlist1),(pathlist2),(pathlist3),.......}
def get_max_speed_path_of_pathes(self,pathes):
j = 0
min_of_maxspeeds = float("inf")
max_speed_path_index = j
while(j<len(pathes)):
pathspeed = self.get_max_speed_of_one_path(pathes[j])
if(min_of_maxspeeds > pathspeed):
min_of_maxspeeds = pathspeed
max_speed_path_index = j
j = j + 1
return pathes[max_speed_path_index]
######################################################--child process--########################################################################
def _apprun(self):
self.Log_debug.write("enter child process"+"\n")
self.Log_debug.flush()
self.Log_debug.write("time "+str(time.time())+"\n")
self.Log_debug.flush()
self.Log_debug.write("child process sleep 30"+"\n")
self.Log_debug.flush()
hub.sleep(30)
self.Log_debug.write("child process sleep 30 over"+"\n")
self.Log_debug.flush()
while self.access_table is None:
self.Log_debug.write("access table is None,wait 5 seconds"+"\n")
self.Log_debug.flush()
hub.sleep(5)
self.Log_debug.write("access_table"+str(self.access_table)+"\n")
self.Log_debug.flush()
self.set_data()###get and cal all data needed
self.Log_debug.write("all data is got,start add flows"+"\n")
self.Log_debug.flush()
self.design_flow_rule()###add flows
self.Log_debug.write("flows are added over"+"\n")
self.Log_debug.flush()
self.Log_debug.write("child process over"+"\n")
self.Log_debug.flush()
self.Log_debug.write(" time "+str(time.time())+"\n")
self.Log_debug.flush()
##############################################################--Major Function--#############################################################
def add_flow(self, dp, p, match, actions, tableid, goto_table, idle_timeout=0, hard_timeout=0):
ofproto = dp.ofproto
parser = dp.ofproto_parser
if goto_table:
inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS, actions),
parser.OFPInstructionGotoTable(1, type_=None, len_=None)]
else:
inst = [parser.OFPInstructionActions(ofproto.OFPIT_APPLY_ACTIONS,
actions)]
mod = parser.OFPFlowMod(datapath=dp, table_id=tableid,
priority=p,command=dp.ofproto.OFPFC_ADD,
idle_timeout=idle_timeout,
hard_timeout=hard_timeout,
match=match, instructions=inst)
dp.send_msg(mod)
self.Log_debug.write("add a new flow "+"\n")
self.Log_debug.flush()
self.Log_debug.write("time "+str(time.time())+"\n")
self.Log_debug.flush()
def install_flow(self, path, flow_info,priority,time,buffer_id, data):
'''
path=[dpid1, dpid2, dpid3...]
flow_info=(eth_type, src_ip, dst_ip, in_port)
'''
# first flow entry
in_port = flow_info[3]
assert path
datapath_first = self.datapaths[path[0]]
ofproto = datapath_first.ofproto
parser = datapath_first.ofproto_parser
out_port = ofproto.OFPP_LOCAL
# inter_link
if len(path) > 2:
for i in xrange(1, len(path) - 1):
port = self.get_link2port(path[i - 1], path[i])
port_next = self.get_link2port(path[i], path[i + 1])
if port:
src_port, dst_port = port[1], port_next[0]
datapath = self.datapaths[path[i]]
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
actions = []
actions.append(parser.OFPActionOutput(dst_port))
match = parser.OFPMatch(
in_port=src_port,
eth_type=flow_info[0],
ipv4_src=flow_info[1],
ipv4_dst=flow_info[2])
self.add_flow(
datapath, priority, match, actions, 0, False,
idle_timeout=time, hard_timeout=time)
# inter links pkt_out
msg_data = None
if buffer_id == ofproto.OFP_NO_BUFFER:
msg_data = data
out = parser.OFPPacketOut(
datapath=datapath, buffer_id=buffer_id,
data=msg_data, in_port=src_port, actions=actions)
datapath.send_msg(out)
if len(path) > 1:
# the first flow entry
port_pair = self.get_link2port(path[0], path[1])
out_port = port_pair[0]
actions = []
actions.append(parser.OFPActionOutput(out_port))
match = parser.OFPMatch(
in_port=in_port,
eth_type=flow_info[0],
ipv4_src=flow_info[1],
ipv4_dst=flow_info[2])
self.add_flow(datapath_first,
priority, match, actions, 0, False, idle_timeout=time, hard_timeout=time)
# the last hop: tor -> host
datapath = self.datapaths[path[-1]]
ofproto = datapath.ofproto
parser = datapath.ofproto_parser
actions = []
src_port = self.get_link2port(path[-2], path[-1])[1]
dst_port = None
for key in self.access_table.keys():
if flow_info[2] == self.access_table[key]:
dst_port = key[1]
break
actions.append(parser.OFPActionOutput(dst_port))
match = parser.OFPMatch(
in_port=src_port,
eth_type=flow_info[0],
ipv4_src=flow_info[1],
ipv4_dst=flow_info[2])
self.add_flow(
datapath, priority, match, actions, 0, False, idle_timeout=time, hard_timeout=time)
# first pkt_out
actions = []
actions.append(parser.OFPActionOutput(out_port))
msg_data = None
if buffer_id == ofproto.OFP_NO_BUFFER:
msg_data = data
out = parser.OFPPacketOut(
datapath=datapath_first, buffer_id=buffer_id,
data=msg_data, in_port=in_port, actions=actions)
datapath_first.send_msg(out)
# last pkt_out
actions = []
actions.append(parser.OFPActionOutput(dst_port))
msg_data = None
if buffer_id == ofproto.OFP_NO_BUFFER:
msg_data = data
out = parser.OFPPacketOut(
datapath=datapath, buffer_id=buffer_id,