/211Project/to211-service/src/main/java/com/to211/service/impl/SessionServiceImpl.java

package com.to211.service.impl;



import java.util.HashMap;

import java.util.Map;

import java.util.concurrent.TimeUnit;



import javax.annotation.Resource;



import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.springframework.data.redis.support.collections.RedisMap;

import org.springframework.stereotype.Service;



import com.alibaba.fastjson.JSON;

import com.fdhay.authcenter.proxy.domain.User;

import com.fdhay.authcenter.proxy.service.UserService;

import com.to211.common.Constants;

import com.to211.service.SessionService;

import com.to211.service.base.RedisService;



@Service(value="sessionService")

public class SessionServiceImpl implements SessionService {

	protected Log logger = LogFactory.getLog(getClass());

	

	@Resource private RedisService redisService;

	@Resource private UserService userService;

	

	private static final String REDIS_LOGIN_USER_KEY_PREFIX = Constants.cfg.getValue("redis.login.user.key.prefix", "redis.login.user.key.");

	private static final String REDIS_LOGIN_USER_TIMEOUT_MINUTES = Constants.cfg.getValue("redis.login.user.timeout.minutes", "5");

	

	private static final String REDIS_SESSION_KEY_PREFIX = Constants.cfg.getValue("redis.session.key.prefix", "redis.session.key.");

	private static final String REDIS_SESSION_TIMEOUT_MINUTES = Constants.cfg.getValue("redis.session.timeout.minutes", "30");

	

	@Override

	public User getLoginUser(String cookie){

		try{

			Map<String, String>  map = redisService.getRedisMap(getRedisMapKeyForLoginUser(cookie));

			String userJson = map.get(cookie);

//			if(user == null){

//				//如果本地redis session中没有该用户，到authcenter认证中心去检测该cookie是否合法。

//				user = userService.getLoginUserIfCookieValid(cookie);

//				this.addLoginUser(cookie, user);

//			}

			return JSON.parseObject(userJson, User.class);

		}catch(Exception e){

			logger.error(e);

		}

		return null;

	}

	

	@Override

	public void addLoginUser(String cookie, User user){

		try{

			String redisMapKey = getRedisMapKeyForLoginUser(cookie);

			RedisMap<String, String>  map = redisService.getRedisMap(redisMapKey);

			map.put(cookie, JSON.toJSONString(user));

			int timeout = Integer.parseInt(REDIS_LOGIN_USER_TIMEOUT_MINUTES);

			map.expire(timeout, TimeUnit.MINUTES);

		}catch(Exception e){

			logger.error(e);

		}

	}

	

	@Override

	public Boolean refreshLoginUserTimeoutMinutes(String cookie){

		try{

			String redisMapKey = getRedisMapKeyForLoginUser(cookie);

			RedisMap<String, String>  map = redisService.getRedisMap(redisMapKey);

			int timeout = Integer.parseInt(REDIS_LOGIN_USER_TIMEOUT_MINUTES);

			return map.expire(timeout, TimeUnit.MINUTES);

		}catch(Exception e){

			logger.error(e);

		}

		return false;

	}

	

	private String getRedisMapKeyForLoginUser(String cookie){

		return REDIS_LOGIN_USER_KEY_PREFIX + cookie;

	}

	



	@Override

	public Map<String, Object> getSessionContext(String cookie){

		try{

			String redisMapKey = getRedisMapKeyForSession(cookie);

			RedisMap<String, Object>  map = redisService.getRedisMap(redisMapKey);

			int timeout = Integer.parseInt(REDIS_SESSION_TIMEOUT_MINUTES);

			map.expire(timeout, TimeUnit.MINUTES);

			return map;

 		}catch(Exception e){

			logger.error(e);

		}

		return new HashMap<String, Object>();

	}

	

	private String getRedisMapKeyForSession(String cookie){

		return REDIS_SESSION_KEY_PREFIX + cookie;

	}

}