def _start(name, f, log):
import daemonize
pidfile = var.pidfile(name)
if os.path.exists(pidfile):
raise Running(name, pidfile)
util.ensure_dir(os.path.dirname(pidfile))
# Save original log level to workaround issue with daemonization
# (see note in _run).
log_level = log.getEffectiveLevel()
daemon = daemonize.Daemonize(app=name,
action=lambda: _run(f, log, log_level),
pid=pidfile,
keep_fds=_log_fds(log))
daemon.start()
def status(name):
pidfile = var.pidfile(name)
if os.path.exists(pidfile):
try:
pid = _read_pid(pidfile)
except Exception as e:
raise PidfileError(pidfile, e)
else:
try:
proc = psutil.Process(pid)
except psutil.NoSuchProcess:
raise OrphanedProcess(pid, pidfile)
else:
return Status(proc.is_running(), pid)
else:
return Status(False)
def stop(name, title=None):
log = logging.getLogger("guild")
title = title or name
pidfile = var.pidfile(name)
if not os.path.exists(pidfile):
raise NotRunning(name)
try:
pid = _read_pid(pidfile)
except Exception:
if log.getEffectiveLevel() <= logging.DEBUG:
log.exception("reading %s", pidfile)
log.info("%s has an invalid pidfile (%s) - deleting", title, pidfile)
util.ensure_deleted(pidfile)
else:
try:
proc = psutil.Process(pid)
except psutil.NoSuchProcess:
log.info("%s did not shut down cleanly - cleaning up", title)
util.ensure_deleted(pidfile)
else:
log.info("Stopping %s (pid %i)", title, proc.pid)
proc.terminate()