def __init__(self, instance_number):
"""
:param instance_number: the controller instance number
:param net: the subnet allocated for the fibbing nodes
"""
self.leader = False
self.instance = instance_number
self.name = 'c%s' % instance_number
self.nodes = {}
self.bridge = Bridge('br0', self.name)
self.root = None
net = ip_network(CFG.get(DEFAULTSECT, 'base_net'))
controller_prefix = CFG.getint(DEFAULTSECT, 'controller_prefixlen')
host_prefix = net.max_prefixlen - controller_prefix
controller_base = (int(net.network_address) +
(instance_number << host_prefix))
controller_net = ip_address(controller_base)
self.net = ip_network('%s/%s' % (controller_net, controller_prefix))
self.graph_thread = Thread(target=self.infer_graph, name="Graph inference thread")
self.json_proxy = SJMPServer(hostname=CFG.get(DEFAULTSECT, 'json_hostname'),
port=CFG.getint(DEFAULTSECT, 'json_port'),
invoke=self.proxy_connected,
target=FakeNodeProxyImplem(self))
self.json_thread = Thread(target=self.json_proxy.communicate)
# Used to assign unique router-id to each node
self.next_id = 1
self.links = []
# The fibbing routes
self.routes = {}
self.route_mappings = {}
def __init__(self, instance_number):
"""
:param instance_number: the controller instance number
:param net: the subnet allocated for the fibbing nodes
"""
self.leader = False
self.instance = instance_number
self.name = 'c%s' % instance_number
self.nodes = {}
self.bridge = Bridge('br0', self.name)
self.root = None
net = ip_network(CFG.get(DEFAULTSECT, 'base_net'))
controller_prefix = CFG.getint(DEFAULTSECT, 'controller_prefixlen')
host_prefix = net.max_prefixlen - controller_prefix
controller_base = (int(net.network_address) +
(instance_number << host_prefix))
controller_net = ip_address(controller_base)
self.net = ip_network('%s/%s' % (controller_net, controller_prefix))
self.graph_thread = daemon_thread(target=self.infer_graph,
name="Graph inference thread")
self.json_proxy = SJMPServer(hostname=CFG.get(DEFAULTSECT,
'json_hostname'),
port=CFG.getint(DEFAULTSECT,
'json_port'),
invoke=self.proxy_connected,
target=FakeNodeProxyImplem(self))
self.json_thread = daemon_thread(target=self.json_proxy.communicate,
name="JSON proxy thread")
# Used to assign unique router-id to each node
self.next_id = 1
self.links = []
# The fibbing routes
self.routes = {}
self.route_mappings = {}
def build_graph(self):
new_graph = DiGraph()
# Rebuild the graph from the LSDB
for lsa in chain(self.routers.values(),
self.networks.values(),
self.ext_networks.values()):
lsa.apply(new_graph, self)
# Contract all IPs to their respective router-id
for lsa in self.routers.values():
lsa.contract_graph(new_graph, self.router_private_address.get(
lsa.routerid, []))
# Figure out the controllers layout
base_net = ip_network(CFG.get(DEFAULTSECT, 'base_net'))
controller_prefix = CFG.getint(DEFAULTSECT, 'controller_prefixlen')
# Group by controller and log them
for ip in new_graph.nodes_iter():
addr = ip_address(ip)
if addr in base_net:
"""1. Compute address diff to remove base_net
2. Right shift to remove host bits
3. Mask with controller mask
"""
id = (((int(addr) - int(base_net.network_address)) >>
base_net.max_prefixlen - controller_prefix) &
((1 << controller_prefix) - 1))
self.controllers[id].append(ip)
# Contract them on the graph
for id, ips in self.controllers.iteritems():
contract_graph(new_graph, ips, 'C_%s' % id)
# Remove generated self loops
new_graph.remove_edges_from(new_graph.selfloop_edges())
self.apply_secondary_addresses(new_graph)
return new_graph
def set_up_ns_ID(self):
"""
update the starting ID of
NetworkNamespace Class
According to instance_nbr
"""
instance_count = CFG.getint(DEFAULTSECT, 'controller_instance_number')
NetworkNamespace.ID = NetworkNamespace.ID + 10 * instance_count
def __init__(self, *args, **kwargs):
super(SouthboundListener, self).__init__(*args, **kwargs)
self.igp_graph = IGPGraph()
self.dirty = False
self.json_proxy = SJMPClient(hostname=CFG.get(DEFAULTSECT,
'json_hostname'),
port=CFG.getint(DEFAULTSECT, 'json_port'),
target=self)
self.quagga_manager = ProxyCloner(FakeNodeProxy, self.json_proxy)
def __init__(self, *args, **kwargs):
super(SouthboundListener, self).__init__(*args, **kwargs)
self.igp_graph = IGPGraph()
self.dirty = False
self.json_proxy = SJMPClient(hostname=CFG.get(DEFAULTSECT,
'json_hostname'),
port=CFG.getint(DEFAULTSECT, 'json_port'),
target=self)
self.quagga_manager = ProxyCloner(FakeNodeProxy, self.json_proxy)
def __init__(self, fwd_dags, optimizer, additional_routes=None):
self.igp_graph = nx.DiGraph()
self.dirty = False
self.additional_routes = additional_routes
self.optimizer = optimizer
self.fwd_dags = fwd_dags
self.current_lsas = set([])
self.json_proxy = SJMPClient(hostname=CFG.get(DEFAULTSECT,
'json_hostname'),
port=CFG.getint(DEFAULTSECT, 'json_port'),
target=self)
self.quagga_manager = ProxyCloner(FakeNodeProxy, self.json_proxy)
def build_graph(self):
self.controllers.clear()
new_graph = IGPGraph()
# Rebuild the graph from the LSDB
for lsa in chain(self.routers.itervalues(),
self.networks.itervalues(),
self.ext_networks.itervalues()):
if is_expired_lsa(lsa):
log.debug("LSA %s is too old (%d) ignoring it!",
lsa, lsa.age)
else:
lsa.apply(new_graph, self)
# Contract all IPs to their respective router-id
for rlsa in self.routers.itervalues():
rlsa.contract_graph(new_graph,
self.private_addresses
.addresses_of(rlsa.routerid))
# Figure out the controllers layout
controller_prefix = CFG.getint(DEFAULTSECT, 'controller_prefixlen')
# Group by controller and log them
for ip in new_graph.nodes_iter():
try:
addr = ip_address(ip)
except ValueError:
continue # Have a prefix
if addr in self.BASE_NET:
"""1. Compute address diff to remove base_net
2. Right shift to remove host bits
3. Mask with controller mask"""
cid = (((int(addr) - int(self.BASE_NET.network_address)) >>
self.BASE_NET.max_prefixlen - controller_prefix) &
((1 << controller_prefix) - 1))
self.controllers[cid].append(ip)
# Contract them on the graph
for id, ips in self.controllers.iteritems():
cname = 'C_%s' % id
new_graph.add_controller(cname)
new_graph.contract(cname, ips)
# Remove generated self loops
new_graph.remove_edges_from(new_graph.selfloop_edges())
self.apply_secondary_addresses(new_graph)
return new_graph
def start(self, phys_ports, nodecount=None):
"""
Start the fibbing network
:param nodecount: Pre-allocate nodecount fibbing nodes
"""
# Create root node
self.root = self.add_node(id='root', cls=RootRouter, start=False)
self.root.lsdb.set_leader_watchdog(self)
del self.nodes[self.root.id] # The root node should not originate LSA
self.graph_thread.start()
self.json_thread.start()
# And map all physical ports to it
ports = gen_physical_ports(phys_ports)
for name, addr in ports:
link = PhysicalLink(self.root, name, addr)
self.root.add_physical_link(link)
self.root.start()
# Create additional nodes if requested
if nodecount is None:
nodecount = CFG.getint(DEFAULTSECT, 'initial_node_count')
while nodecount > 0:
self.add_node()
nodecount -= 1
def start(self, phys_ports, nodecount=None):
"""
Start the fibbing network
:param nodecount: Pre-allocate nodecount fibbing nodes
"""
# Create root node
self.root = self.add_node(id='root', cls=RootRouter, start=False)
self.root.lsdb.set_leader_watchdog(self)
del self.nodes[self.root.id] # The root node should not originate LSA
self.graph_thread.start()
self.json_thread.start()
# And map all physical ports to it
ports = gen_physical_ports(phys_ports)
for name, addr in ports:
link = PhysicalLink(self.root, name, addr)
self.root.add_physical_link(link)
self.root.start()
# Create additional nodes if requested
if nodecount is None:
nodecount = CFG.getint(DEFAULTSECT, 'initial_node_count')
while nodecount > 0:
self.add_node()
nodecount -= 1
def __init__(self, client, *args, **kwargs):
Cmd.__init__(self, *args, **kwargs)
self.client = client
def do_add(self, line=''):
self.client.add(('192.168.14.1', '192.168.23.2', 1, '3.3.3.0/24'))
self.client.add((None, '192.168.23.2', 1, '4.4.4.0/24'))
self.client.add([(None, '192.168.23.2', 1, '5.5.5.0/24'),
(None, '192.168.14.1', 1, '5.5.5.0/24')])
def do_remove(self, line=''):
self.client.remove(('192.168.14.1', '192.168.23.2', '3.3.3.0/24'))
self.client.remove((None, '192.168.23.2', '4.4.4.0/24'))
self.client.remove([(None, '192.168.23.2', '5.5.5.0/24'),
(None, '192.168.14.1', '5.5.5.0/24')])
def do_exit(self, line):
return True
if __name__ == '__main__':
log.setLevel(logging.DEBUG)
shapeshifter = ShapeshifterProxyTest()
c = SJMPClient("localhost",
CFG.getint(DEFAULTSECT, "json_port"),
target=shapeshifter)
fakenode = ProxyCloner(FakeNodeProxy, c)
Thread(target=c.communicate, name='client').start()
TestCLI(fakenode).cmdloop()
c.stop()
class TestCLI(Cmd):
Cmd.prompt = "> "
def __init__(self, client, *args, **kwargs):
Cmd.__init__(self, *args, **kwargs)
self.client = client
def do_add(self, line=""):
self.client.add(("192.168.14.1", "192.168.23.2", 1, "3.3.3.0/24"))
self.client.add((None, "192.168.23.2", 1, "4.4.4.0/24"))
self.client.add([(None, "192.168.23.2", 1, "5.5.5.0/24"), (None, "192.168.14.1", 1, "5.5.5.0/24")])
def do_remove(self, line=""):
self.client.remove(("192.168.14.1", "192.168.23.2", "3.3.3.0/24"))
self.client.remove((None, "192.168.23.2", "4.4.4.0/24"))
self.client.remove([(None, "192.168.23.2", "5.5.5.0/24"), (None, "192.168.14.1", "5.5.5.0/24")])
def do_exit(self, line):
return True
if __name__ == "__main__":
log.setLevel(logging.DEBUG)
shapeshifter = ShapeshifterProxyTest()
c = SJMPClient("localhost", CFG.getint(DEFAULTSECT, "json_port"), target=shapeshifter)
fakenode = ProxyCloner(FakeNodeProxy, c)
Thread(target=c.communicate, name="client").start()
TestCLI(fakenode).cmdloop()
c.stop()