Apollo配置中心动态刷新日志级别

Apollo配置中心动态刷新日志级别

• 添加次配置后，当在apollo上面调整日志级别不需要重启服务器，马上就能生效

  /**
   * 结合apollo动态刷新日志级别
   * @author: nj
   * @date: 2019/1/21:下午5:00
   */
  @Configuration
  public class LogListenerConfig {
      private static final Logger logger = LoggerFactory.getLogger(LoggerConfiguration.class);
      /**
       * 监听关键字，当配置中心的依次开头的配置发生变化时，日志级别刷新
       */
      private static final String LOGGER_TAG = "loggers.root.";
  
      @Autowired
      private LoggingSystem loggingSystem;
  
      /**
       * 可以指定具体的namespace，未指定时使用的是 application这个namespace
       */
      @ApolloConfig
      private Config config;
  
      @ApolloConfigChangeListener
      private void onChange(ConfigChangeEvent changeEvent) {
          refreshLoggingLevels();
      }
  
      @PostConstruct
      private void refreshLoggingLevels() {
          Set<String> keyNames = config.getPropertyNames();
          for (String key : keyNames) {
              if (containsIgnoreCase(key, LOGGER_TAG)) {
                  String strLevel = config.getProperty(key, "info");
                  LogLevel level = LogLevel.valueOf(strLevel.toUpperCase());
                  //重置日志级别，马上生效
                  //loggingSystem.setLogLevel(key.replace(LOGGER_TAG, ""), level);
                  loggingSystem.setLogLevel("", level);
                  logger.info("{}:{}", key, strLevel);
              }
          }
      }
  
      private static boolean containsIgnoreCase(String str, String searchStr) {
          if (str == null || searchStr == null) {
              return false;
          }
          int len = searchStr.length();
          int max = str.length() - len;
          for (int i = 0; i <= max; i++) {
              if (str.regionMatches(true, i, searchStr, 0, len)) {
                  return true;
              }
          }
          return false;
      }
  }