@Override
    public String execute(CommandContext commandContext) throws NoSuchCommandException, PermissionDenyException {
        String remoteAddress = Optional.ofNullable(commandContext.getRemote())
                .map(Channel::remoteAddress)
                .map(Objects::toString)
                .orElse("unknown");

        logger.info("[Dubbo QoS] Command Process start. Command: " + commandContext.getCommandName() + ", Args: "
                + Arrays.toString(commandContext.getArgs()) + ", Remote Address: " + remoteAddress);

        BaseCommand command = null;
        try {
            command =
                    frameworkModel.getExtensionLoader(BaseCommand.class).getExtension(commandContext.getCommandName());
        } catch (Throwable throwable) {
            // can't find command
        }
        if (command == null) {
            logger.info("[Dubbo QoS] Command Not found. Command: " + commandContext.getCommandName()
                    + ", Remote Address: " + remoteAddress);
            throw new NoSuchCommandException(commandContext.getCommandName());
        }

        // check permission when configs allow anonymous access
        if (commandContext.isAllowAnonymousAccess()) {
            PermissionChecker permissionChecker = DefaultAnonymousAccessPermissionChecker.INSTANCE;
            try {
                permissionChecker = frameworkModel
                        .getExtensionLoader(PermissionChecker.class)
                        .getExtension(QosConstants.QOS_PERMISSION_CHECKER);
            } catch (Throwable throwable) {
                // can't find valid custom permissionChecker
            }

            final Cmd cmd = command.getClass().getAnnotation(Cmd.class);
            final PermissionLevel cmdRequiredPermissionLevel = cmd.requiredPermissionLevel();

            if (!permissionChecker.access(commandContext, cmdRequiredPermissionLevel)) {
                logger.info(
                        "[Dubbo QoS] Command Deny to access. Command: " + commandContext.getCommandName() + ", Args: "
                                + Arrays.toString(commandContext.getArgs()) + ", Required Permission Level: "
                                + cmdRequiredPermissionLevel + ", Remote Address: "
                                + remoteAddress);
                throw new PermissionDenyException(commandContext.getCommandName());
            }
        }

        try {
            String result = command.execute(commandContext, commandContext.getArgs());
            if (command.logResult()) {
                logger.info("[Dubbo QoS] Command Process success. Command: " + commandContext.getCommandName()
                        + ", Args: "
                        + Arrays.toString(commandContext.getArgs()) + ", Result: " + result + ", Remote Address: "
                        + remoteAddress);
            }
            return result;
        } catch (Throwable t) {
            logger.info(
                    "[Dubbo QoS] Command Process Failed. Command: " + commandContext.getCommandName() + ", Args: "
                            + Arrays.toString(commandContext.getArgs()) + ", Remote Address: "
                            + remoteAddress,
                    t);
            throw t;
        }
    }
@Test
    void shouldNotThrowPermissionDenyException_GivenPermissionConfigAndNotMatchCmdPermissionLevel() {
        DefaultCommandExecutor executor = new DefaultCommandExecutor(FrameworkModel.defaultModel());
        final CommandContext commandContext = CommandContextFactory.newInstance("live", new String[] {"dubbo"}, false);
        // 1 PROTECTED
        commandContext.setQosConfiguration(
                QosConfiguration.builder().anonymousAccessPermissionLevel("1").build());
        Assertions.assertDoesNotThrow(() -> executor.execute(commandContext));
    }