@Bean
    @ConditionalOnMissingBean(PolarisDataChangedListener.class)
    public DataChangedListener polarisDataChangedListener(final PolarisProperties polarisProperties, final ConfigFileService configFileService,
                                                          final ConfigFilePublishService configFilePublishService) {
        return new PolarisDataChangedListener(polarisProperties, configFileService, configFilePublishService);
    }
Data changed listener data changed listener.

@param polarisProperties polarisProperties
@param configFilePublishService configFilePublishService
@param configFileService the config service
@return the data changed listener
shenyu-admin-listener/shenyu-admin-listener-polaris/src/main/java/org/apache/shenyu/admin/config/PolarisSyncConfiguration.java