def main():
parser = OptionParser()
parser.add_option("-r",
action="store_true",
dest="recover",
help=("run recovery mode (implicit after any crash)"))
parser.add_option("--background",
dest="background",
action="store_true",
default=False,
help=("runs the scheduler monitor on "
"background"))
(options, args) = parser.parse_args()
recover = (options.recover == True)
if len(args) != 0:
parser.print_help()
sys.exit(1)
if os.getuid() == 0:
logging.critical("Running as root, aborting!")
sys.exit(1)
if utils.program_is_alive(monitor_db.WATCHER_PID_FILE_PREFIX):
logging.critical("autotest-monitor-watcher already running, aborting!")
sys.exit(1)
utils.write_pid(monitor_db.WATCHER_PID_FILE_PREFIX)
if options.background:
logging_manager.configure_logging(
watcher_logging_config.WatcherLoggingConfig(use_console=False))
# Double fork - see http://code.activestate.com/recipes/66012/
try:
pid = os.fork()
if (pid > 0):
sys.exit(0) # exit from first parent
except OSError, e:
sys.stderr.write("fork #1 failed: (%d) %s\n" %
(e.errno, e.strerror))
sys.exit(1)
# Decouple from parent environment
os.chdir("/")
os.umask(0)
os.setsid()
# Second fork
try:
pid = os.fork()
if (pid > 0):
sys.exit(0) # exit from second parent
except OSError, e:
sys.stderr.write("fork #2 failed: (%d) %s\n" %
(e.errno, e.strerror))
sys.exit(1)
sys.stderr.write("fork #1 failed: (%d) %s\n" %
(e.errno, e.strerror))
sys.exit(1)
# Decouple from parent environment
os.chdir("/")
os.umask(0)
os.setsid()
# Second fork
try:
pid = os.fork()
if (pid > 0):
sys.exit(0) # exit from second parent
except OSError, e:
sys.stderr.write("fork #2 failed: (%d) %s\n" %
(e.errno, e.strerror))
sys.exit(1)
else:
logging_manager.configure_logging(
watcher_logging_config.WatcherLoggingConfig())
while True:
proc = MonitorProc(do_recovery=recover)
proc.start()
time.sleep(PAUSE_LENGTH)
while proc.is_running():
logging.info("Tick")
time.sleep(PAUSE_LENGTH)
recover = False