package com.ctrip.framework.apollo.portal.auth;

 import com.ctrip.framework.apollo.portal.entity.po.UserInfo;

 import java.lang.reflect.Method;

 /**

  * ctrip内部实现的获取用户信息

  */

 public class CtripUserInfoHolder implements UserInfoHolder{

   private Object assertionHolder;

   private Method getAssertion;

   public CtripUserInfoHolder() {

     Class clazz = null;

     try {

       clazz = Class.forName("org.jasig.cas.client.util.AssertionHolder");

       assertionHolder = clazz.newInstance();

       getAssertion = assertionHolder.getClass().getMethod("getAssertion");

     } catch (Exception e) {

       throw new RuntimeException("init AssertionHolder fail", e);

     }

   }

   @Override

   public UserInfo getUser() {

     try {

       Object assertion = getAssertion.invoke(assertionHolder);

       Method getPrincipal = assertion.getClass().getMethod("getPrincipal");

       Object principal = getPrincipal.invoke(assertion);

       Method getName = principal.getClass().getMethod("getName");

       String name = (String) getName.invoke(principal);

       UserInfo userInfo = new UserInfo();

       userInfo.setUserId(name);

       return userInfo;

     } catch (Exception e) {

       throw new RuntimeException("get user info from assertion holder error", e);

     }

   }

 }