def ensure_stopped( config ):
"""
Stop all syndicated instances for this mountpoint.
"""
mountpoint_dir = config['mountpoint_dir']
# is the daemon running?
procs = watchdog.find_by_attrs( "syndicate-automount-daemon", {"mounts": mountpoint_dir} )
if len(procs) > 0:
failed = signal_all( procs, signal.SIGTERM )
# wait for signals to be delivered
time.sleep(1.0)
procs = watchdog.find_by_attrs( "syndicate-automount-daemon", {"mounts": mountpoint_dir} )
if len(procs) > 0 or len(failed) > 0:
failed = signal_all( procs, signal.SIGKILL )
if len(failed) > 0:
log.error("Failed to stop automount daemons %s" % (",".join( [str(watchdog.get_proc_pid( p )) for p in procs] )))
return False
return True
def get_pids_of_daemons_for_dir( mountpoint_dir ):
"""
Get the PIDs of all automount daemons running on a mountpoint.
"""
procs = watchdog.find_by_attrs( "syndicate-automount-daemon", {"mounts": mountpoint_dir} )
ret = [ watchdog.get_proc_pid(p) for p in procs ]
return ret
def signal_all( procs, signum ):
"""
Send signum to all of a list of processes.
Return the ones where we couldn't deliver the signal.
"""
failed = []
for proc in procs:
pid = watchdog.get_proc_pid( proc )
log.info("Send signal %s to %s" % (signum, pid))
try:
os.kill( pid, signum )
except OSError, oe:
log.exception(oe)
log.error("Failed to send signal %s to %s, errno = %s" % (signum, pid, oe.errno))
failed.append( proc )
def ensure_running( config ):
"""
Verify that there is an automount daemon servicing a mountpoint.
If there isn't, start one.
If we're configured to run in the foreground, this method never returns.
"""
mountpoint_dir = config['mountpoint_dir']
# is the daemon running?
procs = watchdog.find_by_attrs( "syndicate-automount-daemon", {"mounts": mountpoint_dir} )
if len(procs) > 0:
# it's running
print "Syndicate automount daemon already running for %s (PID(s): %s)" % (mountpoint_dir, ",".join( [str(watchdog.get_proc_pid(p)) for p in procs] ))
return True
if config.get("foreground", None):
main( config )
else:
logfile_path = None
pidfile_path = config.get("pidfile", None)
if config.has_key("logdir"):
logfile_path = os.path.join( config['logdir'], "syndicated.log" )
title = watchdog.attr_proc_title( "syndicate-automount-daemon", {"mounts" : mountpoint_dir} )
setproctitle.setproctitle( title )
daemon.daemonize( lambda: main(config), logfile_path=logfile_path, pidfile_path=pidfile_path )
return True
