def wmon(w):
     cpid, _ = self.monitor(w, argv, cpids)
     time.sleep(1)
     self.lock.acquire()
     for cpid in cpids:
         os.kill(cpid, signal.SIGKILL)
     self.lock.release()
     finalize(exval=1)

 def errfail(self):
     """fail nicely if child did not terminate with success"""
     filling = ""
     if self.elines:
         filling = ", saying:"
     logging.error("""command "%s" returned with %s%s""" % (" ".join(self.args), repr(self.returncode), filling))
     for l in self.elines:
         for ll in l.rstrip().split("\n"):
             logging.error(self.args[0] + "> " + ll.rstrip())
     syncdutils.finalize(exval=1)

 def wmon(w):
     cpid, _ = self.monitor(w, argv, cpids, agents, slave_vol,
                            slave_host)
     time.sleep(1)
     self.lock.acquire()
     for cpid in cpids:
         os.kill(cpid, signal.SIGKILL)
     for apid in agents:
         os.kill(apid, signal.SIGKILL)
     self.lock.release()
     finalize(exval=1)

 def wmon(w):
     cpid, _ = self.monitor(w, argv, cpids, agents, slave_vol,
                            slave_host, master)
     time.sleep(1)
     self.lock.acquire()
     for cpid in cpids:
         errno_wrap(os.kill, [cpid, signal.SIGKILL], [ESRCH])
     for apid in agents:
         errno_wrap(os.kill, [apid, signal.SIGKILL], [ESRCH])
     self.lock.release()
     finalize(exval=1)

def main():
    signal.signal(signal.SIGTERM, lambda *a: finalize(*a, **{'exval': 1}))
    GLogger.setup()
    excont = FreeObject(exval = 0)
    try:
        try:
            main_i()
        except:
            log_raise_exception(excont)
    finally:
        finalize(exval = excont.exval)

def main():
    """main routine, signal/exception handling boilerplates"""
    signal.signal(signal.SIGTERM, lambda *a: finalize(*a, **{'exval': 1}))
    GLogger.setup()
    excont = FreeObject(exval = 0)
    try:
        try:
            main_i()
        except:
            log_raise_exception(excont)
    finally:
        finalize(exval = excont.exval)

def main():
    """main routine, signal/exception handling boilerplates"""
    gconf.starttime = time.time()
    set_term_handler()
    GLogger.setup()
    excont = FreeObject(exval = 0)
    try:
        try:
            main_i()
        except:
            log_raise_exception(excont)
    finally:
        finalize(exval = excont.exval)

    def service_loop(self):
        """start a RePCe server serving self's server

        stop servicing if a timeout is configured and got no
        keep-alime in that inteval
        """

        if boolify(gconf.use_rsync_xattrs) and not privileged():
            raise GsyncdError(
                "using rsync for extended attributes is not supported")

        repce = RepceServer(
            self.server, sys.stdin, sys.stdout, int(gconf.sync_jobs))
        t = syncdutils.Thread(target=lambda: (repce.service_loop(),
                                              syncdutils.finalize()))
        t.start()
        logging.info("slave listening")
        if gconf.timeout and int(gconf.timeout) > 0:
            while True:
                lp = self.server.last_keep_alive
                time.sleep(int(gconf.timeout))
                if lp == self.server.last_keep_alive:
                    logging.info(
                        "connection inactive for %d seconds, stopping" %
                        int(gconf.timeout))
                    break
        else:
            select((), (), ())

    def __init__(self, obj, fd_tup):
        (inf, ouf, rw, ww) = fd_tup.split(',')
        repce = RepceServer(obj, int(inf), int(ouf), 1)
        t = syncdutils.Thread(target=lambda: (repce.service_loop(),
                                              syncdutils.finalize()))
        t.start()
        logging.info('Agent listining...')

        select((), (), ())

 def service_loop(self):
     repce = RepceServer(self.server, sys.stdin, sys.stdout, int(gconf.sync_jobs))
     t = syncdutils.Thread(target=lambda: (repce.service_loop(),
                                           syncdutils.finalize()))
     t.start()
     logging.info("slave listening")
     if gconf.timeout and int(gconf.timeout) > 0:
         while True:
             lp = self.server.last_keep_alive
             time.sleep(int(gconf.timeout))
             if lp == self.server.last_keep_alive:
                 logging.info("connection inactive for %d seconds, stopping" % int(gconf.timeout))
                 break
     else:
         select.select((), (), ())

    def service_loop(self):
        """start a RePCe server serving self's server

        stop servicing if a timeout is configured and got no
        keep-alime in that inteval
        """
        repce = RepceServer(self.server, sys.stdin, sys.stdout, int(gconf.sync_jobs))
        t = syncdutils.Thread(target=lambda: (repce.service_loop(), syncdutils.finalize()))
        t.start()
        logging.info("slave listening")
        if gconf.timeout and int(gconf.timeout) > 0:
            while True:
                lp = self.server.last_keep_alive
                time.sleep(int(gconf.timeout))
                if lp == self.server.last_keep_alive:
                    logging.info("connection inactive for %d seconds, stopping" % int(gconf.timeout))
                    break
        else:
            select((), (), ())

        def inhibit(self, *a):
            """inhibit a gluster filesystem

            Mount glusterfs over a temporary mountpoint,
            change into the mount, and lazy unmount the
            filesystem.
            """

            mpi, mpo = os.pipe()
            mh = Popen.fork()
            if mh:
                os.close(mpi)
                fcntl.fcntl(mpo, fcntl.F_SETFD, fcntl.FD_CLOEXEC)
                d = None
                margv = self.make_mount_argv(*a)
                if self.mntpt:
                    # mntpt is determined pre-mount
                    d = self.mntpt
                    os.write(mpo, d + '\0')
                po = Popen(margv, **self.mountkw)
                self.handle_mounter(po)
                po.terminate_geterr()
                logging.debug('auxiliary glusterfs mount in place')
                if not d:
                    # mntpt is determined during mount
                    d = self.mntpt
                    os.write(mpo, d + '\0')
                os.write(mpo, 'M')
                t = syncdutils.Thread(target=lambda: os.chdir(d))
                t.start()
                tlim = gconf.starttime + int(gconf.connection_timeout)
                while True:
                    if not t.isAlive():
                        break
                    if time.time() >= tlim:
                        syncdutils.finalize(exval = 1)
                    time.sleep(1)
                os.close(mpo)
                _, rv = syncdutils.waitpid(mh, 0)
                if rv:
                    rv = (os.WIFEXITED(rv) and os.WEXITSTATUS(rv) or 0) - \
                         (os.WIFSIGNALED(rv) and os.WTERMSIG(rv) or 0)
                    logging.warn('stale mount possibly left behind on ' + d)
                    raise GsyncdError("cleaning up temp mountpoint %s failed with status %d" % \
                                      (d, rv))
            else:
                rv = 0
                try:
                    os.setsid()
                    os.close(mpo)
                    mntdata = ''
                    while True:
                        c = os.read(mpi, 1)
                        if not c:
                            break
                        mntdata += c
                    if mntdata:
                        mounted = False
                        if mntdata[-1] == 'M':
                            mntdata = mntdata[:-1]
                            assert(mntdata)
                            mounted = True
                        assert(mntdata[-1] == '\0')
                        mntpt = mntdata[:-1]
                        assert(mntpt)
                        if mounted:
                            po = self.umount_l(mntpt)
                            po.terminate_geterr(fail_on_err = False)
                            if po.returncode != 0:
                                po.errlog()
                                rv = po.returncode
                        self.cleanup_mntpt(mntpt)
                except:
                    logging.exception('mount cleanup failure:')
                    rv = 200
                os._exit(rv)
            logging.debug('auxiliary glusterfs mount prepared')

 def errfail(self):
     """fail nicely if child did not terminate with success"""
     self.errlog()
     syncdutils.finalize(exval = 1)

#.........这里部分代码省略.........
    # Subcmd accepts config file argument but not passed
    # Set default path for config file in that case
    # If an subcmd accepts config file then it also accepts
    # master and Slave arguments.
    if config_file is None and hasattr(args, "config_file"):
        config_file = "%s/geo-replication/%s_%s_%s/gsyncd.conf" % (
            GLUSTERD_WORKDIR,
            args.master,
            extra_tmpl_args["primary_slave_host"],
            extra_tmpl_args["slavevol"])

    # If Config file path not exists, log error and continue using default conf
    config_file_error_msg = None
    if config_file is not None and not os.path.exists(config_file):
        # Logging not yet initialized, create the error message to
        # log later and reset the config_file to None
        config_file_error_msg = lf(
            "Session config file not exists, using the default config",
            path=config_file)
        config_file = None

    rconf.config_file = config_file

    # Override gconf values from argument values only if it is slave gsyncd
    override_from_args = False
    if args.subcmd == "slave":
        override_from_args = True

    # Load Config file
    gconf.load(GLUSTERFS_CONFDIR + "/gsyncd.conf",
               config_file,
               vars(args),
               extra_tmpl_args,
               override_from_args)

    # Default label to print in log file
    label = args.subcmd
    if args.subcmd in ("worker", "agent"):
        # If Worker or agent, then add brick path also to label
        label = "%s %s" % (args.subcmd, args.local_path)
    elif args.subcmd == "slave":
        # If Slave add Master node and Brick details
        label = "%s %s%s" % (args.subcmd, args.master_node, args.master_brick)

    # Setup Logger
    # Default log file
    log_file = gconf.get("cli-log-file")
    log_level = gconf.get("cli-log-level")
    if getattr(args, "master", None) is not None and \
       getattr(args, "slave", None) is not None:
        log_file = gconf.get("log-file")
        log_level = gconf.get("log-level")

    # Use different log file location for Slave log file
    if args.subcmd == "slave":
        log_file = gconf.get("slave-log-file")
        log_level = gconf.get("slave-log-level")

    if args.debug:
        log_file = "-"
        log_level = "DEBUG"

    # Create Logdir if not exists
    try:
        if log_file != "-":
            os.mkdir(os.path.dirname(log_file))
    except OSError as e:
        if e.errno != EEXIST:
            raise

    setup_logging(
        log_file=log_file,
        level=log_level,
        label=label
    )

    if config_file_error_msg is not None:
        logging.warn(config_file_error_msg)

    # Log message for loaded config file
    if config_file is not None:
        logging.info(lf("Using session config file", path=config_file))

    set_term_handler()
    excont = FreeObject(exval=0)

    # Gets the function name based on the input argument. For example
    # if subcommand passed as argument is monitor then it looks for
    # function with name "subcmd_monitor" in subcmds file
    func = getattr(subcmds, "subcmd_" + args.subcmd.replace("-", "_"), None)

    try:
        try:
            if func is not None:
                rconf.args = args
                func(args)
        except:
            log_raise_exception(excont)
    finally:
        finalize(exval=excont.exval)