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topo.py
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/
topo.py
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#coding=utf-8
#!/usr/bin/env python
from credentials import get_nova_credentials_v2
from credentials import get_credentials
from novaclient.client import Client as nova_client
from neutronclient.v2_0.client import Client as neutron_client
from utils import print_values
import os
import time
class CreateTopo:
def __init__(topo,info):
topo.info=info
topo.subnet_route_route = len(info['link']['route_route'])
topo.subnet_route_host = len(info['link']['route_host'])
topo.subnet_num = topo.subnet_route_route+topo.subnet_route_host
topo.router_num = info['routes']
topo.network_id = u''
topo.subnet_id = {}
topo.subnet_cidr = {}
topo.router_cidr = {}
topo.ports_id = {}
topo.router_id = {}
topo.route_ip = {}
topo.neutron_credentials = get_credentials()
topo.nova_credentials = get_nova_credentials_v2()
topo.neutron = neutron_client(**topo.neutron_credentials)
topo.nova = nova_client(**topo.nova_credentials)
for tmp in range(topo.subnet_num):
topo.ports_id[tmp] = {}
for tmp in range(topo.subnet_num):
topo.route_ip[tmp] = {}
def Create_net(topo):
body_sample = {'network': {'name': topo.info['network'],
'admin_state_up': True}}
netw = topo.neutron.create_network(body=body_sample)
net_dict = netw['network']
topo.network_id = net_dict['id']
print('Network %s created' % topo.network_id)
subnet_list=[]
for tmp in range(topo.subnet_num):
subnet={'cidr':'10.1.'+str(tmp)+'.0/24',
'ip_version':4,
'network_id':topo.network_id,
'name':'subnet'+str(tmp)}
subnet_list.append(subnet)
body_create_subnet={'subnets':subnet_list}
subnet=topo.neutron.create_subnet(body=body_create_subnet)
#print subnet
for tmp in range(topo.subnet_num):
#tmp=int(tmp)
topo.subnet_id[tmp]=subnet['subnets'][tmp]['id']
topo.subnet_cidr[tmp]=subnet['subnets'][tmp]['cidr']
#print topo.subnet_id[tmp]
print 'subnet'+str(tmp),topo.subnet_cidr[tmp],'is created'
print \
def Create_routers(topo):
for tmp in range(topo.router_num):
request = {'router': {'name': 'router'+str(tmp),
'admin_state_up': True}}
router = topo.neutron.create_router(request)
topo.router_id[tmp] = router['router']['id']
print 'router'+str(tmp),'id:',topo.router_id[tmp],'is created'
print \
def Create_ports(topo):
for subnets in range(topo.subnet_route_route):
ports_ip = {}
for tmp in range(len(topo.info['link']['route_route'][subnets])):
body_value = {'port':{
'admin_state_up':True,
'name':'n'+str(subnets)+'port'+str(tmp),
'network_id':topo.network_id,
'fixed_ips':[{'subnet_id':topo.subnet_id[subnets]}],
}}
port = topo.neutron.create_port(body=body_value)
#print port
port_id = port['port']['id']
print 'created port r2r:id---',port_id
topo.ports_id[subnets][tmp] = port['port']['id']
router = topo.info['link']['route_route'][subnets][tmp]
topo.neutron.add_interface_router(\
router = topo.router_id[router],
body = {'port_id':port_id})
ports_ip[router] = port['port']['fixed_ips'][0]['ip_address']
for router_1 in topo.info['link']['route_route'][subnets]:
for router_2 in topo.info['link']['route_route'][subnets]:
if router_1 != router_2:
topo.route_ip[router_1][router_2] = ports_ip[router_2]
print \
for subnets in range(topo.subnet_route_route,topo.subnet_num):
for tmp in range(len(topo.info['link']['route_host'][subnets-topo.subnet_route_host])):
if tmp == 0:
body_value = {'port':{
'admin_state_up':True,
'fixed_ips':[{'subnet_id':topo.subnet_id[subnets],
'ip_address':'10.1.'+str(subnets)+'.1'}],
'name':'n'+str(subnets)+'port'+str(tmp),
'network_id':topo.network_id,
}}
port = topo.neutron.create_port(body=body_value)
port_id = port['port']['id']
topo.ports_id[subnets][tmp] = port_id
router = topo.info['link']['route_host'][subnets-topo.subnet_route_route][tmp]
topo.neutron.add_interface_router(\
router=topo.router_id[router],
body={'port_id':port_id})
topo.router_cidr[router] = topo.subnet_cidr[subnets]
else:
body_port = {'port':{
'admin_state_up':True,
'name':'n'+str(subnets)+'port'+str(tmp),
'network_id':topo.network_id,
'fixed_ips':[{'subnet_id':topo.subnet_id[subnets]}],
}}
port = topo.neutron.create_port(body=body_port)
port_id = port['port']['id']
print 'created port r2h:id---',port_id
topo.ports_id[subnets][tmp] = port_id
print \
def Create_vms(topo):
for subnets in range(topo.subnet_route_route,topo.subnet_num):
for tmp in range(1,len(topo.info['link']['route_host'][subnets-topo.subnet_route_route])):
nics = [{'port-id':topo.ports_id[subnets][tmp]}]
image = topo.nova.images.find(name = topo.info['image'])
flavor = topo.nova.flavors.find(name = topo.info['flavor'])
vm_name = 'vm'+str(topo.info['link']['route_host'][subnets-topo.subnet_route_route][tmp])
instance = topo.nova.servers.create(
name = 'vm'+str(topo.info['link']['route_host'][subnets-topo.subnet_route_route][tmp]),
flavor = flavor,
image = image,
key_name = 'demo-key',
nics = nics)
time.sleep(5)
print ("created:%s",vm_name)
print \
def init_LinkGraph(topo):
topo.LinkGraph = {}
for router_1 in range(topo.info['routes']):
topo.LinkGraph[router_1]={}
for router_2 in range(topo.info['routes']):
topo.LinkGraph[router_1][router_2] = 999999 #MAX
for Link_Group in range(len(topo.info['link']['route_route'])):
for router_1 in topo.info['link']['route_route'][Link_Group]:
for router_2 in topo.info['link']['route_route'][Link_Group]:
if router_1 != router_2:
topo.LinkGraph[router_1][router_2] = 1
else:
topo.LinkGraph[router_1][router_2] = 0
def init_nextHop(topo):
topo.nextHop = {}
for router in range(topo.info['routes']):
topo.nextHop[router] = {}
def BFS_routes(topo):
nextHop = {}
for router in range(topo.info['routes']):
nextHop[router] = {}
for bejin_router in range(topo.info['routes']):
visited = {}
queue = []
for router in range(topo.info['routes']):
visited[router] = False
visited[bejin_router] = True
for router in range(topo.info['routes']):
if visited[router] == False and topo.LinkGraph[bejin_router][router] == 1:
visited[router] = True
nextHop[bejin_router][router] = router
for router in range(topo.info['routes']):
if visited[router] == True and bejin_router != router:
queue.append(router)
while(len(queue)!=0):
tmp_router = queue.pop(0)
for end_router in range(topo.info['routes']):
if visited[end_router] == False and topo.LinkGraph[tmp_router][end_router] == 1:
visited[end_router] = True
queue.append(end_router)
nextHop[bejin_router][end_router] = router
topo.nextHop = nextHop
def add_routeTable(topo):
for router_1 in range(topo.info['routes']):
routes = []
for router_2 in range(topo.info['routes']):
if router_1 != router_2 and router_2 in topo.router_cidr.keys() and router_2 in topo.nextHop[router_1].keys():
print router_1
print router_2
end_Cidr = topo.router_cidr[router_2]
print end_Cidr
nextHop_ip = topo.route_ip[router_1][topo.nextHop[router_1][router_2]]
print nextHop_ip
routes.append({'destination':end_Cidr,'nexthop':nextHop_ip})
body_routes = {'router':{'routes':routes}}
print body_routes
topo.neutron.update_router(topo.router_id[router_1],body_routes)
print 'routeTable added'
print topo.nextHop
if __name__=='__main__':
info={'vms':4,
'routes':3,
'link':{'route_route':[(0,1),(1,2)],
'route_host':[(0,0,1),(2,2,3)]},
'flavor':'8b7842f3-458d-4d1b-8988-189f4864ba04',
'network':'sample-net',
'image':'38d09e27-c127-4229-a1ff-0e52ee4131ad'
}
topo = CreateTopo(info)
topo.Create_net()
topo.Create_routers()
topo.Create_ports()
topo.Create_vms()
topo.init_nextHop()
topo.init_LinkGraph()
topo.BFS_routes()
print topo.nextHop
topo.add_routeTable()
#print topo.nextHop