@Override
    public void handlerPlugin(final PluginData pluginData) {
        if (Objects.nonNull(pluginData) && Boolean.TRUE.equals(pluginData.getEnabled())) {
            MotanRegisterConfig motanRegisterConfig = GsonUtils.getInstance().fromJson(pluginData.getConfig(), MotanRegisterConfig.class);
            MotanRegisterConfig exist = Singleton.INST.get(MotanRegisterConfig.class);
            if (Objects.isNull(motanRegisterConfig)) {
                return;
            }
            if (Objects.isNull(exist) || !motanRegisterConfig.equals(exist)) {
                // If it is null, initialize it
                ApplicationConfigCache.getInstance().init(motanRegisterConfig);
                ApplicationConfigCache.getInstance().invalidateAll();
            }
            Singleton.INST.single(MotanRegisterConfig.class, motanRegisterConfig);
        }
    }
The type motan plugin data handler.
shenyu-plugin/shenyu-plugin-proxy/shenyu-plugin-rpc/shenyu-plugin-motan/src/main/java/org/apache/shenyu/plugin/motan/handler/MotanPluginDataHandler.java