def change_atexitPolicy(interactive_session=True, new_policy=None):
from Ganga.Core.MonitoringComponent.Local_GangaMC_Service import config
if new_policy is None:
# select the shutdown method based on configuration and/or session type
forced_shutdown_policy = config['forced_shutdown_policy']
else:
forced_shutdown_policy = new_policy
if forced_shutdown_policy == 'interactive':
should_wait_cb = should_wait_interactive_cb
else:
if forced_shutdown_policy == 'batch':
should_wait_cb = should_wait_batch_cb
else:
if interactive_session:
should_wait_cb = should_wait_interactive_cb
else:
should_wait_cb = should_wait_batch_cb
global at_exit_should_wait_cb
if at_exit_should_wait_cb is None:
at_exit_should_wait_cb = should_wait_cb
import atexit
from Ganga.Core.GangaThread import GangaThreadPool
# create generic Ganga thread pool
thread_pool = GangaThreadPool.getInstance()
atexit.register(thread_pool.shutdown, should_wait_cb=at_exit_should_wait_cb)
else:
at_exit_should_wait_cb = should_wait_cb
global current_shutdown_policy
current_shutdown_policy = forced_shutdown_policy
def change_atexitPolicy(interactive_session=True, new_policy=None):
from Ganga.Core.MonitoringComponent.Local_GangaMC_Service import config
if new_policy is None:
# select the shutdown method based on configuration and/or session type
forced_shutdown_policy = config['forced_shutdown_policy']
else:
forced_shutdown_policy = new_policy
if forced_shutdown_policy == 'interactive':
should_wait_cb = should_wait_interactive_cb
else:
if forced_shutdown_policy == 'batch':
should_wait_cb = should_wait_batch_cb
else:
if interactive_session:
should_wait_cb = should_wait_interactive_cb
else:
should_wait_cb = should_wait_batch_cb
global at_exit_should_wait_cb
if at_exit_should_wait_cb is None:
at_exit_should_wait_cb = should_wait_cb
import atexit
from Ganga.Core.GangaThread import GangaThreadPool
# create generic Ganga thread pool
thread_pool = GangaThreadPool.getInstance()
atexit.register(thread_pool.shutdown,
should_wait_cb=at_exit_should_wait_cb)
else:
at_exit_should_wait_cb = should_wait_cb
global current_shutdown_policy
current_shutdown_policy = forced_shutdown_policy
def _ganga_run_exitfuncs():
"""Run all exit functions from plugins and internal services in the correct order
Go over all plugins and internal services and call the appropriate shutdown functions in the correct order. Because
we want each shutdown function to be run (e.g. to make sure flushing is done) we put each call into a try..except
and report to the user before continuing.
"""
# Set the disk timeout to 1 sec, sacrifice stability for quicker exit
setConfigOption('Configuration', 'DiskIOTimeout', 1)
# Stop the monitoring loop from iterating further
if monitoring_component is not None:
try:
getStackTrace()
if monitoring_component.alive:
monitoring_component.disableMonitoring()
monitoring_component.stop()
monitoring_component.join()
except Exception as err:
logger.exception("Exception raised while stopping the monitoring: %s" % err)
# Stop the tasks system from running
try:
stopTasks()
except Exception as err:
logger.exception("Exception raised while stopping Tasks: %s" % err)
# purge the monitoring queues
try:
_purge_actions_queue()
stop_and_free_thread_pool()
except Exception as err:
logger.exception("Exception raised while purging monitoring queues: %s" % err)
# Freeze queues
try:
if _global_queues:
_global_queues.freeze()
except Exception as err:
logger.exception("Exception raised during freeze of Global Queues: %s" % err)
# shutdown the threads in the GangaThreadPool
try:
GangaThreadPool.getInstance().shutdown()
except Exception as err:
logger.exception("Exception raised during shutdown of GangaThreadPool: %s" % err)
# Shutdown queues
try:
logger.info("Stopping Job processing before shutting down Repositories")
shutDownQueues()
except Exception as err:
logger.exception("Exception raised while purging shutting down queues: %s" % err)
# shutdown the repositories
try:
logger.info("Shutting Down Ganga Repositories")
Repository_runtime.shutdown()
except Exception as err:
logger.exception("Exception raised while shutting down repositories: %s" % err)
# label services as disabled
Coordinator.servicesEnabled = False
# clear the credential store
try:
CredentialStore.shutdown()
except Exception as err:
logger.exception("Exception raised while clearing the credential store: %s" % err)
# shutdown SessionLock
try:
removeGlobalSessionFileHandlers()
removeGlobalSessionFiles()
except Exception as err:
logger.exception("Exception raised while shutting down SessionLocks: %s" % err)
# Shutdown stacktracer
if stacktracer._tracer:
try:
stacktracer.trace_stop()
except Exception as err:
logger.exception("Exception raised while stopping stack tracer: %s" % err)
# do final shutdown
if requires_shutdown is True:
try:
final_shutdown()
except Exception as err:
logger.exception("Exception raised while doing final shutdown: %s" % err)
# show any open files after everything's shutdown
if bootstrap.DEBUGFILES or bootstrap.MONITOR_FILES:
bootstrap.printOpenFiles()
logger.info("Bootstrapping")
Ganga.Runtime._prog.bootstrap()
else:
# No need to perform the bootstrap but we need to test if the internal
# services need to be reinitialized
from Ganga.Utility.Config import setConfigOption
setConfigOption('PollThread', 'forced_shutdown_policy', 'batch')
from Ganga.Core.InternalServices import Coordinator
if not Coordinator.servicesEnabled:
# Start internal services
logger.info("InternalServices restarting")
def testing_cb(t_total, critical_thread_ids, non_critical_thread_ids):
return True
from Ganga.Core.GangaThread import GangaThreadPool
thread_pool = GangaThreadPool.getInstance()
thread_pool.shutdown(should_wait_cb=testing_cb)
from Ganga.GPI import reactivate
reactivate()
else:
logger.info("InternalServices still running")
# Adapted from the Coordinator class, check for the required credentials and stop if not found
# Hopefully stops us falling over due to no AFS access of something similar
from Ganga.Core.InternalServices import Coordinator
missing_cred = Coordinator.getMissingCredentials()
logger.info("Checking Credentials")
if missing_cred:
raise Exception("Failed due to missing credentials %s" %
def _ganga_run_exitfuncs():
"""Run all exit functions from plugins and internal services in the correct order
Go over all plugins and internal services and call the appropriate shutdown functions in the correct order. Because
we want each shutdown function to be run (e.g. to make sure flushing is done) we put each call into a try..except
and report to the user before continuing.
"""
# Set the disk timeout to 1 sec, sacrifice stability for quicker exit
setConfigOption('Configuration', 'DiskIOTimeout', 1)
# Stop the monitoring loop from iterating further
if monitoring_component is not None:
try:
getStackTrace()
if monitoring_component.alive:
monitoring_component.disableMonitoring()
monitoring_component.stop()
monitoring_component.join()
except Exception as err:
logger.exception(
"Exception raised while stopping the monitoring: %s" % err)
# Stop the tasks system from running
try:
stopTasks()
except Exception as err:
logger.exception("Exception raised while stopping Tasks: %s" % err)
# purge the monitoring queues
try:
_purge_actions_queue()
stop_and_free_thread_pool()
except Exception as err:
logger.exception(
"Exception raised while purging monitoring queues: %s" % err)
# Freeze queues
try:
if _global_queues:
_global_queues.freeze()
except Exception as err:
logger.exception(
"Exception raised during freeze of Global Queues: %s" % err)
# shutdown the threads in the GangaThreadPool
try:
GangaThreadPool.getInstance().shutdown()
except Exception as err:
logger.exception(
"Exception raised during shutdown of GangaThreadPool: %s" % err)
# Shutdown queues
try:
logger.info(
"Stopping Job processing before shutting down Repositories")
shutDownQueues()
except Exception as err:
logger.exception(
"Exception raised while purging shutting down queues: %s" % err)
# shutdown the repositories
try:
logger.info("Shutting Down Ganga Repositories")
Repository_runtime.shutdown()
except Exception as err:
logger.exception(
"Exception raised while shutting down repositories: %s" % err)
# label services as disabled
Coordinator.servicesEnabled = False
# shutdown SessionLock
try:
removeGlobalSessionFileHandlers()
removeGlobalSessionFiles()
except Exception as err:
logger.exception(
"Exception raised while shutting down SessionLocks: %s" % err)
# Shutdown stacktracer
if stacktracer._tracer:
try:
stacktracer.trace_stop()
except Exception as err:
logger.exception(
"Exception raised while stopping stack tracer: %s" % err)
# do final shutdown
if requires_shutdown is True:
try:
final_shutdown()
except Exception as err:
logger.exception(
"Exception raised while doing final shutdown: %s" % err)
# show any open files after everything's shutdown
if bootstrap.DEBUGFILES or bootstrap.MONITOR_FILES:
bootstrap.printOpenFiles()
def bootstrap(reg, interactive_session):
"""
Create local subsystems. In the future this procedure should be enhanced to connect to remote subsystems.
FIXME: this procedure should be moved to the Runtime package.
This function will change the default value of autostart of the monitoring, depending if the session is interactive or batch.
The autostart value may be overriden in the config file, so warn if it differs from the default.
"""
from Ganga.Core.MonitoringComponent.Local_GangaMC_Service import JobRegistry_Monitor, config
config.addOption('forced_shutdown_policy','session_type','If there are remaining background activities at exit such as monitoring, output download Ganga will attempt to wait for the activities to complete. You may select if a user is prompted to answer if he wants to force shutdown ("interactive") or if the system waits on a timeout without questions ("timeout"). The default is "session_type" which will do interactive shutdown for CLI and timeout for scripts.')
config.addOption('forced_shutdown_timeout',60,"Timeout in seconds for forced Ganga shutdown in batch mode.")
config.addOption('forced_shutdown_prompt_time',10,"User will get the prompt every N seconds, as specified by this parameter.")
config.addOption('forced_shutdown_first_prompt_time',5,"User will get the FIRST prompt after N seconds, as specified by this parameter. This parameter also defines the time that Ganga will wait before shutting down, if there are only non-critical threads alive, in both interactive and batch mode.")
from Ganga.Utility.logging import getLogger
logger = getLogger()
from Ganga.Core.GangaThread import GangaThreadPool
# create generic Ganga thread pool
thread_pool = GangaThreadPool.getInstance()
#start the internal services coordinator
from Ganga.Core.InternalServices import Coordinator,ShutdownManager
Coordinator.bootstrap()
#load the shutdown manager
#ShutdownManager.install()
# backend-specific setup (e.g. Remote: setup any remote ssh pipes)
for j in reg:
if hasattr(j,'status') and j.status in ['submitted','running']:
if hasattr(j,'backend'): # protect: EmptyGangaObject does not have backend either
if hasattr(j.backend,'setup'): # protect: EmptyGangaObject does not have setup() method
j.backend.setup()
#start the monitoring loop
global monitoring_component
monitoring_component = JobRegistry_Monitor( reg )
monitoring_component.start()
#register the MC shutdown hook
import atexit
def should_wait_interactive_cb(t_total, critical_thread_ids, non_critical_thread_ids):
global t_last
if t_last is None:
t_last = -time.time()
# if there are critical threads then prompt user or wait depending on configuration
if critical_thread_ids:
if ((t_last<0 and time.time()+t_last > config['forced_shutdown_first_prompt_time']) or
(t_last>0 and time.time()-t_last > config['forced_shutdown_prompt_time'])):
msg = """Job status update or output download still in progress (shutdown not completed after %d seconds).
%d background thread(s) still running: %s.
Do you want to force the exit (y/[n])? """ % (t_total, len(critical_thread_ids), critical_thread_ids)
resp = raw_input(msg)
t_last = time.time()
return resp.lower() != 'y'
else:
return True
# if there are non-critical threads then wait or shutdown depending on configuration
elif non_critical_thread_ids:
if t_total < config['forced_shutdown_first_prompt_time']:
return True
else:
return False
# if there are no threads then shutdown
else:
return False
def should_wait_batch_cb(t_total, critical_thread_ids, non_critical_thread_ids):
# if there are critical threads then wait or shutdown depending on configuration
if critical_thread_ids:
if t_total < config['forced_shutdown_timeout']:
return True
else:
logger.warning('Shutdown was forced after waiting for %d seconds for background activities to finish (monitoring, output download, etc). This may result in some jobs being corrupted.',t_total)
return False
# if there are non-critical threads then wait or shutdown depending on configuration
elif non_critical_thread_ids:
if t_total < config['forced_shutdown_first_prompt_time']:
return True
else:
return False
# if there are no threads then shutdown
else:
return False
#register the exit function with the highest priority (==0)
#atexit.register((0,monitoring_component.stop), fail_cb=mc_fail_cb,max_retries=config['max_shutdown_retries'])
#select the shutdown method based on configuration and/or session type
forced_shutdown_policy = config['forced_shutdown_policy']
if forced_shutdown_policy == 'interactive':
should_wait_cb = should_wait_interactive_cb
else:
if forced_shutdown_policy == 'batch':
should_wait_cb = should_wait_batch_cb
else:
if interactive_session:
should_wait_cb = should_wait_interactive_cb
else:
should_wait_cb = should_wait_batch_cb
atexit.register((0,thread_pool.shutdown), should_wait_cb=should_wait_cb)
#export to GPI
from Ganga.Runtime.GPIexport import exportToGPI
exportToGPI('runMonitoring',monitoring_component.runMonitoring,'Functions')
autostart_default = interactive_session
config.overrideDefaultValue('autostart',bool(autostart_default))
if config['autostart'] is not autostart_default:
msg = 'monitoring loop %s (the default setting for %s session is %s)'
val = { True : ('enabled', 'batch', 'disabled'),
False: ('disabled', 'interactive', 'enabled')}
logger.warning(msg%val[config['autostart']])
if config['autostart']:
monitoring_component.enableMonitoring()
# THIS IS FOR DEBUGGING ONLY
import time
class Stuck(GangaThread.GangaThread):
def __init__(self):
GangaThread.GangaThread.__init__(self,name='Stuck')
def run(self):
i = 0
while i < 10:
time.sleep(3)
#print '*'*30,i
i += 1
def stop(self):
print "I was asked to stop..."
