private void loadTrustedUriPattern(TrimProperties properties) throws IOException {
    String trustedUriPattern =
        properties.getProperty(
            "trusted_uri_pattern",
            ConfigurationFileUtils.getConfigurationDefaultValue("trusted_uri_pattern"));
    Pattern pattern;
    if (trustedUriPattern != null) {
      try {
        pattern = Pattern.compile(trustedUriPattern);
      } catch (Exception e) {
        LOGGER.warn("Failed to parse trusted_uri_pattern {}", trustedUriPattern);
        pattern = commonDescriptor.getConfig().getTrustedUriPattern();
      }
    } else {
      pattern = commonDescriptor.getConfig().getTrustedUriPattern();
    }
    commonDescriptor.getConfig().setTrustedUriPattern(pattern);
  }
load a property file and set TsfileDBConfig variables.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/conf/IoTDBDescriptor.java