def construct_sfc(src, dst, number_of_vnfs):
sfc_dict = {
"name": "sfc_1",
"type": "xx",
"vnf_list": [
# {"type": 2, "name": "vnf1", "CPU": 10},
# {"type": 2, "name": "vnf2", "CPU": 20},
# {"type": 2, "name": "vnf3", "CPU": 30},
# {"type": 2, "name": "vnf4", "CPU": 40},
# {"type": 2, "name": "vnf5", "CPU": 40},
# {"type": 2, "name": "vnf6", "CPU": 40},
],
"bandwidth": random.randint(5, 10),
"src_node": 0,
"dst_node": 0,
"latency": 10,
"duration": 20
}
sfc_dict['src_node'] = src
sfc_dict['dst_node'] = dst
for i in range(0, number_of_vnfs):
name = 'vnf' + str(i + 1)
vnf = {"type": 2, "name": name, "CPU": random.randint(5, 10)}
sfc_dict['vnf_list'].append(vnf)
# print sfc_dict
sfc = SFCGenerator(sfc_dict).generate()
return sfc
def generate_sfc(p):
global count
count = count + 1
sfc_dict["name"] = "sfc_" + str(count)
vnf_list = []
number_of_vnfs = random.randint(2, 6)
for i in range(0, number_of_vnfs):
vnf_list.append({
"type": 2,
"name": "vnf" + str(i),
"CPU": random.randint(1, 50)
})
bandwidth = random.randint(1, 50)
src_node = random.randint(0, number_of_substrate_node - 1)
dst_node = random.randint(0, number_of_substrate_node - 1)
while (dst_node == src_node):
dst_node = random.randint(0, number_of_substrate_node - 1)
# lifetime = np.random.poisson(500)
lifetime = int(round(np.random.exponential(500)))
duration = lifetime
sfc_dict["vnf_list"] = vnf_list
sfc_dict["bandwidth"] = bandwidth
sfc_dict["src_node"] = src_node
sfc_dict["dst_node"] = dst_node
sfc_dict["duration"] = duration
# for test
# vnf_list = []
# number_of_vnfs = 6# random.randint(2, 6)
# for i in range(0, number_of_vnfs):
# vnf_list.append({"type": 2, "name": "vnf" + str(i), "CPU": random.randint(1, 50)})
# bandwidth = random.randint(1, 50)
# src_node = random.randint(0, number_of_substrate_node - 1)
# dst_node = random.randint(0, number_of_substrate_node - 1)
# duration = random.randint(1000000, 2000000)
# sfc_dict["vnf_list"] = vnf_list
# sfc_dict["bandwidth"] = bandwidth
# sfc_dict["src_node"] = src_node
# sfc_dict["dst_node"] = dst_node
# sfc_dict["duration"] = duration
# print "***********"
print count
print sfc_dict
# print "###########"
sfc = SFCGenerator(sfc_dict).generate()
sfc_queue.put_sfc(sfc)
print "queue_size: " + str(sfc_queue.qsize())
if count >= 1000:
print "stop"
sfc_poisson_emitter.stop()
from algorithms.k_shortest_paths_algorithm import KShortestPathsAlgorithm
from algorithms.betweenness_centrality_algorithm import BetweennessCentralityAlgorithm
ALG3 = ALG3()
DPA = DynamicProgrammingAlgorithm()
RandomAlgorithm = RandomAlgorithm()
GreedyAlgorithm = GreedyAlgorithm()
KShortestPathsAlgorithm = KShortestPathsAlgorithm()
BetweennessCentralityAlgorithm = BetweennessCentralityAlgorithm()
substrate_network = simple_six_node_topology
# substrate_network = substrate_random_network
substrate_network = generate_random_network(100, 0.05)
sfc_dict = sfc1.sfc
sfc = SFCGenerator(sfc_dict).generate()
def deploy_sfc(deployment_algorithm, substrate_network, sfc):
# print "---------- " + deployment_algorithm.name + " ----------------------------"
deployment_algorithm.clear_all()
deployment_algorithm.install_substrate_network(substrate_network)
deployment_algorithm.install_SFC(sfc)
start_time = time.time()
deployment_algorithm.start_algorithm()
end_time = time.time()
route_info = deployment_algorithm.get_route_info()
latency = deployment_algorithm.get_latency()
return (route_info, latency, (end_time - start_time))