def __init__(self, configuration):
self.daemon = Daemon(self)
self.processes = Processes(self)
self.configuration = Configuration(configuration)
self.watchdogs = {}
self._peers = {}
self._shutdown = False
self._reload = False
self._restart = False
self._route_update = False
self._commands = {}
self._saved_pid = False
self.reload()
signal.signal(signal.SIGTERM, self.sigterm)
signal.signal(signal.SIGHUP, self.sighup)
signal.signal(signal.SIGALRM, self.sigalrm)
def __init__ (self,configuration):
self.daemon = Daemon(self)
self.processes = Processes(self)
self.configuration = Configuration(configuration)
self.watchdogs = {}
self._peers = {}
self._shutdown = False
self._reload = False
self._restart = False
self._route_update = False
self._commands = {}
self._saved_pid = False
self.reload()
signal.signal(signal.SIGTERM, self.sigterm)
signal.signal(signal.SIGHUP, self.sighup)
signal.signal(signal.SIGALRM, self.sigalrm)
class Supervisor(object):
# [hex(ord(c)) for c in os.popen('clear').read()]
clear = ''.join([
chr(int(c, 16))
for c in ['0x1b', '0x5b', '0x48', '0x1b', '0x5b', '0x32', '0x4a']
])
def __init__(self, configuration):
self.daemon = Daemon(self)
self.processes = Processes(self)
self.configuration = Configuration(configuration)
self.watchdogs = {}
self._peers = {}
self._shutdown = False
self._reload = False
self._restart = False
self._route_update = False
self._commands = {}
self._saved_pid = False
self.reload()
signal.signal(signal.SIGTERM, self.sigterm)
signal.signal(signal.SIGHUP, self.sighup)
signal.signal(signal.SIGALRM, self.sigalrm)
def sigterm(self, signum, frame):
logger.supervisor("SIG TERM received")
self._shutdown = True
def sighup(self, signum, frame):
logger.supervisor("SIG HUP received")
self._reload = True
def sigalrm(self, signum, frame):
logger.supervisor("SIG ALRM received")
self._restart = True
def run(self, supervisor_speed=0.5):
if self.daemon.drop_privileges():
logger.supervisor(
"Could not drop privileges to '%s' refusing to run as root" %
self.daemon.user)
logger.supervisor(
"Set the environmemnt value USER to change the unprivileged user"
)
return
self.daemon.daemonise()
self.daemon.savepid()
# did we complete the run of updates caused by the last SIGHUP ?
reload_completed = True
while True:
try:
while self._peers:
start = time.time()
self.handle_commands(self.processes.received())
if self._shutdown:
self._shutdown = False
self.shutdown()
elif self._reload and reload_completed:
self._reload = False
self.reload()
elif self._restart:
self._restart = False
self.restart()
elif self._route_update:
self._route_update = False
self.route_update()
elif self._commands:
self.commands(self._commands)
self._commands = {}
reload_completed = True
# Handle all connection
peers = self._peers.keys()
ios = []
while peers:
for key in peers[:]:
peer = self._peers[key]
# there was no routes to send for this peer, we performed keepalive checks
if peer.run() is not True:
# no need to come back to it before a a full cycle
if peer.bgp and peer.bgp.connection:
ios.append(peer.bgp.connection.io)
peers.remove(key)
# send the route we parsed (if we parsed any to our child processes)
# This is a generator and can only be run once
try:
for route in peer.received_routes():
# This is a generator which content does only change at config reload
for name in self.processes.receive_routes(
):
# using str(key) as we should not manipulate it and assume its format
self.processes.write(
name, 'neighbor %s %s\n' %
(str(key), route))
except ProcessError:
# Can not find any better error code that 6,0 !
raise Notify(6, 0,
'ExaBGP Internal error, sorry.')
# otherwise process as many routes as we can within a second for the remaining peers
duration = time.time() - start
# RFC state that we MUST not more than one KEEPALIVE / sec
# And doing less could cause the session to drop
if duration >= 1.0:
reload_completed = False
ios = []
break
duration = time.time() - start
if ios:
try:
read, _, _ = select.select(
ios, [], [], max(supervisor_speed - duration,
0))
except select.error, e:
errno, message = e.args
if not errno in errno_block:
raise
else:
if duration < supervisor_speed:
time.sleep(max(supervisor_speed - duration, 0))
self.processes.terminate()
self.daemon.removepid()
break
except KeyboardInterrupt:
logger.supervisor("^C received")
self._shutdown = True
except IOError:
logger.supervisor(
"I/O Error received, most likely ^C during IO")
self._shutdown = True
class Supervisor (object):
# [hex(ord(c)) for c in os.popen('clear').read()]
clear = ''.join([chr(int(c,16)) for c in ['0x1b', '0x5b', '0x48', '0x1b', '0x5b', '0x32', '0x4a']])
def __init__ (self,configuration):
self.daemon = Daemon(self)
self.processes = Processes(self)
self.configuration = Configuration(configuration)
self.watchdogs = {}
self._peers = {}
self._shutdown = False
self._reload = False
self._restart = False
self._route_update = False
self._commands = {}
self._saved_pid = False
self.reload()
signal.signal(signal.SIGTERM, self.sigterm)
signal.signal(signal.SIGHUP, self.sighup)
signal.signal(signal.SIGALRM, self.sigalrm)
def sigterm (self,signum, frame):
logger.supervisor("SIG TERM received")
self._shutdown = True
def sighup (self,signum, frame):
logger.supervisor("SIG HUP received")
self._reload = True
def sigalrm (self,signum, frame):
logger.supervisor("SIG ALRM received")
self._restart = True
def run (self,supervisor_speed=0.5):
if self.daemon.drop_privileges():
logger.supervisor("Could not drop privileges to '%s' refusing to run as root" % self.daemon.user)
logger.supervisor("Set the environmemnt value USER to change the unprivileged user")
return
self.daemon.daemonise()
self.daemon.savepid()
# did we complete the run of updates caused by the last SIGHUP ?
reload_completed = True
while True:
try:
while self._peers:
start = time.time()
self.handle_commands(self.processes.received())
if self._shutdown:
self._shutdown = False
self.shutdown()
elif self._reload and reload_completed:
self._reload = False
self.reload()
elif self._restart:
self._restart = False
self.restart()
elif self._route_update:
self._route_update = False
self.route_update()
elif self._commands:
self.commands(self._commands)
self._commands = {}
reload_completed = True
# Handle all connection
peers = self._peers.keys()
ios = []
while peers:
for key in peers[:]:
peer = self._peers[key]
# there was no routes to send for this peer, we performed keepalive checks
if peer.run() is not True:
# no need to come back to it before a a full cycle
if peer.bgp and peer.bgp.connection:
ios.append(peer.bgp.connection.io)
peers.remove(key)
# send the route we parsed (if we parsed any to our child processes)
# This is a generator and can only be run once
try:
for route in peer.received_routes():
# This is a generator which content does only change at config reload
for name in self.processes.receive_routes():
# using str(key) as we should not manipulate it and assume its format
self.processes.write(name,'neighbor %s %s\n' % (str(key),route))
except ProcessError:
# Can not find any better error code that 6,0 !
raise Notify(6,0,'ExaBGP Internal error, sorry.')
# otherwise process as many routes as we can within a second for the remaining peers
duration = time.time() - start
# RFC state that we MUST not more than one KEEPALIVE / sec
# And doing less could cause the session to drop
if duration >= 1.0:
reload_completed = False
ios=[]
break
duration = time.time() - start
if ios:
try:
read,_,_ = select.select(ios,[],[],max(supervisor_speed-duration,0))
except select.error,e:
errno,message = e.args
if not errno in errno_block:
raise
else:
if duration < supervisor_speed:
time.sleep(max(supervisor_speed-duration,0))
self.processes.terminate()
self.daemon.removepid()
break
except KeyboardInterrupt:
logger.supervisor("^C received")
self._shutdown = True
except IOError:
logger.supervisor("I/O Error received, most likely ^C during IO")
self._shutdown = True
