def __init__(self, config):
self.start_time = util.current_time()
self.area_list = dict()
self.backbone = None # unused
self.virtual_link = None # unused
self.external_router = list() # unused
self.as_external_lsa = dict() # type-5 lsa list
self.nssa_lsa = dict() # type-7 lsa list
self.opaque11_lsa = dict() # type-11 lsa list
self.config = config
self.rid = self.config['router_id']
self.interface_mame = self.config['interface']
self.local_ip = self.config['ip']
# Check config parameters legality
if self.config['hello_interval'] < 1 or self.config[
'hello_interval'] > 65535:
LOG.critical(
'[OSPF Instance] Hello interval is beyond the limitation.')
return
try:
self.config['options'] = OspfProtocol.parse_options_config(
self.config['options'])
except Exception:
LOG.critical('[OSPF Instance] Options is illegal.')
return
# The probe only connect to one area, so area list has no meaning.
self.area = OspfArea(self)
self.area_list[self.area.area_id] = self.area
self.lsdb = OspfLsdb(self)
self.recv = OspfReceiver(self.area.interface,
self.area.interface.nbr_list,
self.config['packet_display'])
self._sock = None # socket for receiving ospf packets
# Statistics
self.stat = OspfStat()
def __init__(self, config):
self.start_time = util.current_time()
self.area_list = dict()
self.backbone = None # unused
self.virtual_link = None # unused
self.external_router = list() # unused
self.as_external_lsa = dict() # type-5 lsa list
self.nssa_lsa = dict() # type-7 lsa list
self.opaque11_lsa = dict() # type-11 lsa list
self.config = config
self.rid = self.config['router_id']
self.interface_mame = self.config['interface']
self.local_ip = self.config['ip']
# Check config parameters legality
if self.config['hello_interval'] < 1 or self.config['hello_interval'] > 65535:
LOG.critical('[OSPF Instance] Hello interval is beyond the limitation.')
return
try:
self.config['options'] = OspfProtocol.parse_options_config(self.config['options'])
except Exception:
LOG.critical('[OSPF Instance] Options is illegal.')
return
# The probe only connect to one area, so area list has no meaning.
self.area = OspfArea(self)
self.area_list[self.area.area_id] = self.area
self.lsdb = OspfLsdb(self)
self.recv = OspfReceiver(self.area.interface, self.area.interface.nbr_list, self.config['packet_display'])
self._sock = None # socket for receiving ospf packets
# Statistics
self.stat = OspfStat()
class OspfInstance(object):
"""
OSPF instance skeleton class
"""
_instance = None
def __new__(cls, *args, **kwargs):
if not cls._instance:
cls._instance = super(OspfInstance, cls).__new__(cls, *args, **kwargs)
return cls._instance
def __init__(self, config):
self.start_time = util.current_time()
self.area_list = dict()
self.backbone = None # unused
self.virtual_link = None # unused
self.external_router = list() # unused
self.as_external_lsa = dict() # type-5 lsa list
self.nssa_lsa = dict() # type-7 lsa list
self.opaque11_lsa = dict() # type-11 lsa list
self.config = config
self.rid = self.config['router_id']
self.interface_mame = self.config['interface']
self.local_ip = self.config['ip']
# Check config parameters legality
if self.config['hello_interval'] < 1 or self.config['hello_interval'] > 65535:
LOG.critical('[OSPF Instance] Hello interval is beyond the limitation.')
return
try:
self.config['options'] = OspfProtocol.parse_options_config(self.config['options'])
except Exception:
LOG.critical('[OSPF Instance] Options is illegal.')
return
# The probe only connect to one area, so area list has no meaning.
self.area = OspfArea(self)
self.area_list[self.area.area_id] = self.area
self.lsdb = OspfLsdb(self)
self.recv = OspfReceiver(self.area.interface, self.area.interface.nbr_list, self.config['packet_display'])
self._sock = None # socket for receiving ospf packets
# Statistics
self.stat = OspfStat()
def run(self):
"""
Main thread
"""
# gives an interface up message to ism
self.area.interface.fire('ISM_InterfaceUp')
if self.area.interface.state == ISM_STATE['ISM_Down']:
LOG.error('[OSPF Instance] Interface up failed.')
return
# open a socket to listen ospf port to avoid sending icmp protocol unreachable
self._sock = OspfSock()
self._sock.bind_ospf_multicast_group(self.interface_mame)
self._sock.add_ospf_multicast_group(self.local_ip)
# bind signal handler to handle terminal signal
signal.signal(signal.SIGTERM, self.term_handler)
signal.signal(signal.SIGINT, self.term_handler)
while True:
(data, src) = self._sock.recv()
(src_ip, port) = src
if src_ip == self.local_ip: # filter to drop all packets from self
continue
self.recv.ospf_handler(data, time.time())
def term_handler(self, a, b):
LOG.debug('[OSPF Instance] Signal %s is received.' % str(a))
self.exit()
def exit(self):
self._sock.drop_ospf_multicast_group(self.local_ip)
self._sock.close()
LOG.info('[OSPF Instance] Program exits.')
exit(0)
class OspfInstance(object):
"""
OSPF instance skeleton class
"""
_instance = None
def __new__(cls, *args, **kwargs):
if not cls._instance:
cls._instance = super(OspfInstance,
cls).__new__(cls, *args, **kwargs)
return cls._instance
def __init__(self, config):
self.start_time = util.current_time()
self.area_list = dict()
self.backbone = None # unused
self.virtual_link = None # unused
self.external_router = list() # unused
self.as_external_lsa = dict() # type-5 lsa list
self.nssa_lsa = dict() # type-7 lsa list
self.opaque11_lsa = dict() # type-11 lsa list
self.config = config
self.rid = self.config['router_id']
self.interface_mame = self.config['interface']
self.local_ip = self.config['ip']
# Check config parameters legality
if self.config['hello_interval'] < 1 or self.config[
'hello_interval'] > 65535:
LOG.critical(
'[OSPF Instance] Hello interval is beyond the limitation.')
return
try:
self.config['options'] = OspfProtocol.parse_options_config(
self.config['options'])
except Exception:
LOG.critical('[OSPF Instance] Options is illegal.')
return
# The probe only connect to one area, so area list has no meaning.
self.area = OspfArea(self)
self.area_list[self.area.area_id] = self.area
self.lsdb = OspfLsdb(self)
self.recv = OspfReceiver(self.area.interface,
self.area.interface.nbr_list,
self.config['packet_display'])
self._sock = None # socket for receiving ospf packets
# Statistics
self.stat = OspfStat()
def run(self):
"""
Main thread
"""
# gives an interface up message to ism
self.area.interface.fire('ISM_InterfaceUp')
if self.area.interface.state == ISM_STATE['ISM_Down']:
LOG.error('[OSPF Instance] Interface up failed.')
return
# open a socket to listen ospf port to avoid sending icmp protocol unreachable
self._sock = OspfSock()
self._sock.bind_ospf_multicast_group(self.interface_mame)
self._sock.add_ospf_multicast_group(self.local_ip)
# bind signal handler to handle terminal signal
signal.signal(signal.SIGTERM, self.term_handler)
signal.signal(signal.SIGINT, self.term_handler)
while True:
(data, src) = self._sock.recv()
(src_ip, port) = src
if src_ip == self.local_ip: # filter to drop all packets from self
continue
self.recv.ospf_handler(data, time.time())
def term_handler(self, a, b):
LOG.debug('[OSPF Instance] Signal %s is received.' % str(a))
self.exit()
def exit(self):
self._sock.drop_ospf_multicast_group(self.local_ip)
self._sock.close()
LOG.info('[OSPF Instance] Program exits.')
exit(0)
