apollo-configservice/src/main/java/com/ctrip/framework/apollo/configservice/ConfigServiceAutoConfiguration.java/ConfigServiceAutoConfiguration/clientAuthenticationFilter
class ConfigServiceAutoConfiguration:  @Bean
  public FilterRegistrationBean clientAuthenticationFilter(AccessKeyUtil accessKeyUtil) {
    FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();

    filterRegistrationBean.setFilter(new ClientAuthenticationFilter(bizConfig, accessKeyUtil));
    filterRegistrationBean.addUrlPatterns("/configs/*");
    filterRegistrationBean.addUrlPatterns("/configfiles/*");
    filterRegistrationBean.addUrlPatterns("/notifications/v2/*");

    return filterRegistrationBean;
  }