+#!/usr/bin/python
+# Something relevant
"""Node Manager"""
import optparse
import time
import xmlrpclib
+import socket
+import os
+import sys
+import resource
import logger
-import sm
import tools
+from config import Config
+from plcapi import PLCAPI
+import random
+import net
+
+savedargv = sys.argv[:]
parser = optparse.OptionParser()
parser.add_option('-d', '--daemon', action='store_true', dest='daemon', default=False, help='run daemonized')
parser.add_option('-s', '--startup', action='store_true', dest='startup', default=False, help='run all sliver startup scripts')
+parser.add_option('-f', '--config', action='store', dest='config', default='/etc/planetlab/plc_config', help='PLC configuration file')
+parser.add_option('-k', '--session', action='store', dest='session', default='/etc/planetlab/session', help='API session key (or file)')
+parser.add_option('-p', '--period', action='store', dest='period', default=600, help='Polling interval (sec)')
(options, args) = parser.parse_args()
-# XXX - awaiting a real implementation
-data = []
modules = []
-def GetSlivers():
- for mod in modules: mod.GetSlivers_callback(data)
-
-def start_and_register_callback(mod):
- mod.start(options)
- modules.append(mod)
-
+def GetSlivers(plc):
+ try: data = plc.GetSlivers()
+ except: logger.log_exc()
+ # Set i2 ip list for nodes in I2 nodegroup.
+ try: net.GetSlivers(plc, data)
+ except: logger.log_exc()
+ # All other callback modules
+ for module in modules:
+ try:
+ callback = getattr(module, 'GetSlivers')
+ callback(data)
+ except: logger.log_exc()
def run():
try:
if options.daemon: tools.daemon()
+ # Load /etc/planetlab/plc_config
+ config = Config(options.config)
+
+ try:
+ other_pid = tools.pid_file()
+ if other_pid != None:
+ 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)
+ return
+ except OSError, err:
+ print "Warning while writing PID file:", err
+
+ # Load and start modules
+ for module in ['proper', 'conf_files', 'sm', 'bwmon']:
+ try:
+ m = __import__(module)
+ m.start(options, config)
+ modules.append(m)
+ except ImportError, err:
+ print "Warning while loading module %s:" % module, err
+
+ # Load /etc/planetlab/session
+ if os.path.exists(options.session):
+ session = file(options.session).read().strip()
+ else:
+ session = options.session
- other_pid = tools.pid_file()
- if other_pid != None:
- 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)
- return
+ # Initialize XML-RPC client
+ plc = PLCAPI(config.plc_api_uri, config.cacert, session, timeout=options.period/2)
- start_and_register_callback(sm)
while True:
- try: GetSlivers()
- except: logger.log_exc()
- time.sleep(10)
+ # Main NM Loop
+ GetSlivers(plc)
+ time.sleep(options.period + random.randrange(0,301))
except: logger.log_exc()
-if __name__ == '__main__': run()
+if __name__ == '__main__':
+ stacklim = 512*1024 # 0.5 MiB
+ curlim = resource.getrlimit(resource.RLIMIT_STACK)[0] # soft limit
+ if curlim > stacklim:
+ resource.setrlimit(resource.RLIMIT_STACK, (stacklim, stacklim))
+ # for some reason, doesn't take effect properly without the exec()
+ python = '/usr/bin/python'
+ os.execv(python, [python] + savedargv)
+ run()
else:
# This is for debugging purposes. Open a copy of Python and import nm
tools.as_daemon_thread(run)