apollo-client/src/main/java/com/ctrip/framework/apollo/internals/AbstractConfigRepository.java/AbstractConfigRepository/fireRepositoryChange
class AbstractConfigRepository:  protected void fireRepositoryChange(String namespace, Properties newProperties) {
    for (RepositoryChangeListener listener : m_listeners) {
      try {
        listener.onRepositoryChange(namespace, newProperties);
      } catch (Throwable ex) {
        Tracer.logError(ex);
        logger.error("Failed to invoke repository change listener {}", listener.getClass(), ex);
      }
    }
  }