15 from config import Config
16 from plcapi import PLCAPI
21 savedargv = sys.argv[:]
23 known_modules=['conf_files', 'sm', 'bwmon', 'vsys', 'codemux']
25 parser = optparse.OptionParser()
26 parser.add_option('-d', '--daemon', action='store_true', dest='daemon', default=False, help='run daemonized')
27 parser.add_option('-s', '--startup', action='store_true', dest='startup', default=False, help='run all sliver startup scripts')
28 parser.add_option('-f', '--config', action='store', dest='config', default='/etc/planetlab/plc_config', help='PLC configuration file')
29 parser.add_option('-k', '--session', action='store', dest='session', default='/etc/planetlab/session', help='API session key (or file)')
30 parser.add_option('-p', '--period', action='store', dest='period', default=600, help='Polling interval (sec)')
31 parser.add_option('-r', '--random', action='store', dest='random', default=301, help='Range for additional random polling interval (sec)')
32 parser.add_option('-v', '--verbose', action='store_true', dest='verbose', default=False, help='more verbose log')
33 parser.add_option('-m', '--module', action='store', dest='module', default='', help='run a single module among '+' '.join(known_modules))
34 (options, args) = parser.parse_args()
39 '''Run call backs defined in modules'''
41 logger.log("Syncing w/ PLC")
42 data = plc.GetSlivers()
45 # XXX So some modules can at least boostrap.
48 logger.log_slivers(data)
49 # Set i2 ip list for nodes in I2 nodegroup.
50 try: net.GetSlivers(plc, data)
51 except: logger.log_exc()
52 # All other callback modules
53 for module in modules:
55 callback = getattr(module, 'GetSlivers')
57 except: logger.log_exc()
61 if options.daemon: tools.daemon()
65 logger.set_level(logger.LOG_VERBOSE)
67 # Load /etc/planetlab/plc_config
68 config = Config(options.config)
71 other_pid = tools.pid_file()
73 print """There might be another instance of the node manager running as pid %d. If this is not the case, please remove the pid file %s""" % (other_pid, tools.PID_FILE)
76 print "Warning while writing PID file:", err
78 # Load and start modules
80 assert options.module in known_modules
81 running_modules=[options.module]
82 logger.verbose('Running single module %s'%options.module)
84 running_modules=known_modules
85 for module in running_modules:
87 m = __import__(module)
88 m.start(options, config)
90 except ImportError, err:
91 print "Warning while loading module %s:" % module, err
93 # Load /etc/planetlab/session
94 if os.path.exists(options.session):
95 session = file(options.session).read().strip()
97 session = options.session
99 # Initialize XML-RPC client
100 iperiod=int(options.period)
101 irandom=int(options.random)
102 plc = PLCAPI(config.plc_api_uri, config.cacert, session, timeout=iperiod/2)
106 logger.verbose('mainloop - nm:getSlivers - period=%d random=%d'%(iperiod,irandom))
108 delay=iperiod + random.randrange(0,irandom)
109 logger.verbose('mainloop - sleeping for %d s'%delay)
111 except: logger.log_exc()
114 if __name__ == '__main__':
115 logger.log("Entering nm.py "+id)
116 stacklim = 512*1024 # 0.5 MiB
117 curlim = resource.getrlimit(resource.RLIMIT_STACK)[0] # soft limit
118 if curlim > stacklim:
119 resource.setrlimit(resource.RLIMIT_STACK, (stacklim, stacklim))
120 # for some reason, doesn't take effect properly without the exec()
121 python = '/usr/bin/python'
122 os.execv(python, [python] + savedargv)
125 # This is for debugging purposes. Open a copy of Python and import nm
126 tools.as_daemon_thread(run)