def _generate_path(self, topo, src_mac, dst_mac, src_port,
dst_port, src_dpid, dst_dpid):
"""Generate path method."""
net = nx.DiGraph(data=topo)
net.add_node(src_mac)
net.add_node(dst_mac)
net.add_edge(int(src_dpid), src_mac, {'port': int(src_port)})
net.add_edge(src_mac, int(src_dpid))
net.add_edge(int(dst_dpid), dst_mac, {'port': int(dst_port)})
net.add_edge(dst_mac, int(dst_dpid))
target_path = None
try:
path = nx.shortest_path(net, src_mac, dst_mac)
path2 = nx.shortest_path(net, src_mac, dst_mac)
path2.pop()
path2.pop(0)
list_load = check_switch_load(path2, data_collection.switch_stat, constant.load_limitation)
if len(list_load) > 0:
# print 'lui', list_load
all_paths = nx.all_simple_paths(net, src_mac, dst_mac)
path_list = list(all_paths)
target_path_index, target_path_cost = calculate_least_cost_path(path_list, data_collection.switch_stat, net)
target_path = path_list[target_path_index]
else:
target_path = path
print 'tarrr', target_path
except Exception:
target_path = None
return target_path
def _generate_path(self, topo, src_mac, dst_mac, src_port, dst_port,
src_dpid, dst_dpid):
"""Generate path method."""
net = nx.DiGraph(data=topo)
net.add_node(src_mac)
net.add_node(dst_mac)
net.add_edge(int(src_dpid), src_mac, {'port': int(src_port)})
net.add_edge(src_mac, int(src_dpid))
net.add_edge(int(dst_dpid), dst_mac, {'port': int(dst_port)})
net.add_edge(dst_mac, int(dst_dpid))
target_path = None
try:
path = nx.shortest_path(net, src_mac, dst_mac)
path2 = nx.shortest_path(net, src_mac, dst_mac)
path2.pop()
path2.pop(0)
list_load = check_switch_load(path2, data_collection.switch_stat,
constant.load_limitation)
if len(list_load) > 0:
# print 'lui', list_load
all_paths = nx.all_simple_paths(net, src_mac, dst_mac)
path_list = list(all_paths)
target_path_index, target_path_cost = calculate_least_cost_path(
path_list, data_collection.switch_stat, net)
target_path = path_list[target_path_index]
else:
target_path = path
print 'tarrr', target_path
except Exception:
target_path = None
return target_path
def _monitor(self):
while True:
switch_list = get_switch(self.topology_api_app, None)
switch_id_list = []
for datapath in switch_list:
self._update_sw_stas(datapath)
self._request_stats(datapath.dp)
switch_id_list.append(datapath.dp.id)
target_list = check_switch_load(switch_id_list, switch_stat,
constant.load_limitation)
print'target_list', target_list, len(target_list)
if len(target_list) > 0:
ev = Routing_UpdateEvent(target_list, constant.load_limitation)
# print 'evevevevevev', ev, ev.msg
self.send_event_to_observers(ev)
hub.sleep(1)
