content: package com.ctrip.framework.apollo.portal.spi.ctrip.filters;
  
  import com.ctrip.framework.apollo.portal.constant.TracerEventType;
  import com.ctrip.framework.apollo.portal.entity.bo.UserInfo;
  import com.ctrip.framework.apollo.portal.spi.UserInfoHolder;
  import com.ctrip.framework.apollo.tracer.Tracer;
  
  import com.google.common.base.Strings;
  
  import javax.servlet.*;
  import javax.servlet.http.HttpServletRequest;
  
  import java.io.IOException;
  
  public class UserAccessFilter implements Filter {
  
    private static final String STATIC_RESOURCE_REGEX = ".*\\.(js|html|htm|png|css|woff2)$";
  
    private UserInfoHolder userInfoHolder;
  
    public UserAccessFilter(UserInfoHolder userInfoHolder) {
      this.userInfoHolder = userInfoHolder;
    }
  
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
  
    }
  
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
        throws IOException, ServletException {
  
      String requestUri = ((HttpServletRequest) request).getRequestURI();
  
      try {
        if (!isOpenAPIRequest(requestUri) && !isStaticResource(requestUri)) {
          UserInfo userInfo = userInfoHolder.getUser();
          if (userInfo != null) {
            Tracer.logEvent(TracerEventType.USER_ACCESS, userInfo.getUserId());
          }
        }
      } catch (Throwable e) {
        Tracer.logError("Record user access info error.", e);
      }
  
      chain.doFilter(request, response);
    }
  
    @Override
    public void destroy() {
  
    }
  
    private boolean isOpenAPIRequest(String uri) {
      return !Strings.isNullOrEmpty(uri) && uri.startsWith("/openapi");
    }
  
    private boolean isStaticResource(String uri) {
      return !Strings.isNullOrEmpty(uri) && uri.matches(STATIC_RESOURCE_REGEX);
    }
  
  }
  