#!/usr/bin/python
-
+#
+# $Id$
+# $URL$
#
# Useful information can be found at https://svn.planet-lab.org/wiki/NodeManager
#
# NOTE: modules listed here should also be loaded in this order
known_modules=['net','conf_files', 'sm', 'bwmon']
-# Deal with plugins directory
plugin_path = "/usr/share/NodeManager/plugins"
-if os.path.exists(plugin_path):
- sys.path.append(plugin_path)
- known_modules += [i[:-3] for i in os.listdir(plugin_path) if i.endswith(".py") and (i[:-3] not in known_modules)]
+default_period=600
+default_random=301
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)')
-parser.add_option('-r', '--random', action='store', dest='random', default=301, help='Range for additional random polling interval (sec)')
+parser.add_option('-p', '--period', action='store', dest='period', default=default_period,
+ help='Polling interval (sec) - default %d'%default_period)
+parser.add_option('-r', '--random', action='store', dest='random', default=default_random,
+ help='Range for additional random polling interval (sec) -- default %d'%default_random)
parser.add_option('-v', '--verbose', action='store_true', dest='verbose', default=False, help='more verbose log')
parser.add_option('-P', '--path', action='store', dest='path', default=plugin_path, help='Path to plugins directory')
modules = []
-def GetSlivers(plc, config):
+def GetSlivers(config, plc):
'''Run call backs defined in modules'''
try:
logger.log("Syncing w/ PLC")
+ # retrieve GetSlivers from PLC
data = plc.GetSlivers()
- if (options.verbose): logger.log_slivers(data)
+ # use the magic 'default' slice to retrieve system-wide defaults
getPLCDefaults(data, config)
+ # tweak the 'vref' attribute from GetSliceFamily
+ setSliversVref (data)
+ # always dump it for debug purposes
+ # used to be done only in verbose; very helpful though, and tedious to obtain,
+ # so let's dump this unconditionnally
+ logger.log_slivers(data)
+ logger.verbose("Sync w/ PLC done (3)")
except:
- logger.log_exc()
+ logger.log_exc("failed in nm.GetSlivers")
# XXX So some modules can at least boostrap.
logger.log("nm: Can't contact PLC to GetSlivers(). Continuing.")
data = {}
for module in modules:
try:
callback = getattr(module, 'GetSlivers')
- callback(plc, data, config)
- except: logger.log_exc()
+ callback(data, config, plc)
+ except: logger.log_exc("nm.GetSlivers failed to run callback for module %r"%module)
def getPLCDefaults(data, config):
if len(attr_dict):
logger.verbose("Found default slice overrides.\n %s" % attr_dict)
config.OVERRIDES = attr_dict
- return
+ return
+ # NOTE: if an _default slice existed, it would have been found above and
+ # the routine would return. Thus, if we've gotten here, then no default
+ # slice is bound to this node.
if 'OVERRIDES' in dir(config): del config.OVERRIDES
+def setSliversVref (data):
+ '''
+ Tweak the 'vref' attribute in all slivers based on the 'GetSliceFamily' key
+ '''
+ # GetSlivers exposes the result of GetSliceFamily() as an separate key in data
+ # It is safe to override the attributes with this, as this method has the right logic
+ for sliver in data.get('slivers'):
+ try:
+ slicefamily=sliver.get('GetSliceFamily')
+ for att in sliver['attributes']:
+ if att['tagname']=='vref':
+ att['value']=slicefamily
+ continue
+ sliver['attributes'].append({ 'tagname':'vref','value':slicefamily})
+ except:
+ logger.log_exc("Could not overwrite 'vref' attribute from 'GetSliceFamily'",name=sliver['name'])
+
+
def run():
try:
if options.daemon: tools.daemon()
irandom=int(options.random)
plc = PLCAPI(config.plc_api_uri, config.cacert, session, timeout=iperiod/2)
+ #check auth
+ logger.log("Checking Auth.")
+ while plc.check_authentication() != True:
+ try:
+ plc.update_session()
+ logger.log("Authentication Failure. Retrying")
+ except:
+ logger.log("Retry Failed. Waiting")
+ time.sleep(iperiod)
+ logger.log("Authentication Succeeded!")
+
+
while True:
# Main NM Loop
logger.verbose('mainloop - nm:getSlivers - period=%d random=%d'%(iperiod,irandom))
- GetSlivers(plc, config)
+ GetSlivers(config, plc)
delay=iperiod + random.randrange(0,irandom)
logger.verbose('mainloop - sleeping for %d s'%delay)
time.sleep(delay)
- except: logger.log_exc()
+ except: logger.log_exc("failed in nm.run")
if __name__ == '__main__':
- logger.log("Entering nm.py "+id)
- 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)
+ logger.log("======================================== Entering nm.py "+id)
run()
else:
# This is for debugging purposes. Open a copy of Python and import nm
git://git.onelab.eu / nodemanager.git / blobdiff