package com.nis.interceptor;

import java.text.SimpleDateFormat;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.core.NamedThreadLocal;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import com.nis.util.DateUtils;
import com.nis.util.LogUtils;
import com.nis.web.service.BaseService;

public class LogInterceptor extends BaseService implements HandlerInterceptor{
	
	private static final ThreadLocal<Long> timeThreadLocal =
			new NamedThreadLocal<Long>("ThreadLocal StartTime");
	

	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
			throws Exception {
		long beginTime = System.currentTimeMillis();//1、开始时间  
		timeThreadLocal.set(beginTime);		//线程绑定变量（该数据只有当前请求的线程可见）  
		if (logger.isDebugEnabled()){
	        logger.debug("开始计时: {}  URI: {}", new SimpleDateFormat("hh:mm:ss.SSS")
	        	.format(beginTime), request.getRequestURI());
		}
		
		
		return true;
	}

	@Override
	public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
			ModelAndView modelAndView) throws Exception {
		if (modelAndView != null){
			logger.info("ViewName: " + modelAndView.getViewName());
		}
		
	}

	@Override
	public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
			throws Exception {
		long beginTime = timeThreadLocal.get();//得到线程绑定的局部变量（开始时间）  
		long endTime = System.currentTimeMillis(); 	//2、结束时间  
		
		long consumerTime = endTime - beginTime;
		
		// 打印JVM信息。
		if (logger.isDebugEnabled()){
			
			Object[] params = new Object[]{
					new SimpleDateFormat("hh:mm:ss.SSS").format(endTime)
					, DateUtils.formatDateTime(consumerTime)
					,request.getRequestURI()
					,Runtime.getRuntime().maxMemory()/1024/1024
					,Runtime.getRuntime().totalMemory()/1024/1024
					,Runtime.getRuntime().freeMemory()/1024/1024
					,(Runtime.getRuntime().maxMemory()-Runtime.getRuntime().totalMemory()+Runtime.getRuntime().freeMemory())/1024/1024};
	        logger.debug("计时结束：{}  耗时：{}  URI: {}  最大内存: {}m  已分配内存: {}m  已分配内存中的剩余空间: {}m  最大可用内存: {}m",params);
	        		
		}
		
		// 保存日志
		LogUtils.saveLog(request, handler, ex, null, consumerTime);
				
		
	}

}