package com.singhand.framework.common.aspectj;

import java.lang.reflect.Method;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import com.singhand.framework.common.aspectj.log.annotation.Log;

/**
 ************************************************* 
 * @ClassName: LogAspect
 * @Description: TODO(日志切面)
 * @author maojianyun
 * @date 2018年5月12日 下午3:44:09
 ************************************************
 */
@Aspect
@Component
public class LogAspect {

	/**
	 ********************************************************* 
	 * @method: logPointCut
	 * @Description: TODO(配置日志log织入点)
	 * @return void
	 * @author maojianyun
	 *********************************************************
	 */
	@Pointcut("@annotation(com.singhand.framework.common.aspectj.log.annotation.Log)")
	public void logPointCut() {
	}

	/**
	 ********************************************************* 
	 * @method: doBefore
	 * @Description: TODO(前置通知 用于拦截操作)
	 * @Param joinPoint 切点
	 * @return void
	 * @author maojianyun
	 *********************************************************
	 */
	@AfterReturning(pointcut = "logPointCut()")
	public void doBefore(JoinPoint joinPoint) {
		
	}

	/**
	 * ********************************************************
	 * 
	 * @method: arround
	 * @Description: TODO(环绕通知：用于记录接口所用的时间)
	 * @Param @param pjp
	 * @Param @return TODO(描述参数作用)
	 * @return Object
	 * @throws Throwable
	 * @author TODO
	 *********************************************************
	 */
	@Around("logPointCut()")
	public Object arround(ProceedingJoinPoint joinPoint) throws Throwable {
		long startTime = System.currentTimeMillis();
		Object o = joinPoint.proceed();
		// 获得注解
		Log log = getAnnotationLog(joinPoint);
		String action = log.action();
		// 添加记录时间的日志
		System.err.println("接口描述："+action);
		System.err.println("所用时间"+(System.currentTimeMillis() - startTime));
		return o;

	}

	/**
	 ********************************************************* 
	 * @method: AfterThrowing
	 * @Description: TODO(后置异常通知)
	 * @Param joinPoint
	 * @return void
	 * @author maojianyun
	 *********************************************************
	 */
	@AfterThrowing(value = "logPointCut()", throwing = "e")
	public void AfterThrowing(JoinPoint joinPoint, Exception e) {
		try {
			// 获得注解
			Log log = getAnnotationLog(joinPoint);
			String action = log.action();
			// 添加记录异常日志
			System.err.println("异常功能描述："+action);
			System.err.println("拦截异常日志。。。。。。。。。。。。。。。");
			e.printStackTrace();
		} catch (Exception e1) {
			e1.printStackTrace();
		}
	}

	/**
	 ********************************************************* 
	 * @method: getAnnotationLog
	 * @Description: TODO(判断是否具有注解)
	 * @Param joinPoint 切点
	 * @Param Exception
	 * @return Log 日志
	 * @author Exception
	 *********************************************************
	 */
	public Log getAnnotationLog(JoinPoint joinPoint) throws Exception {
		Signature signature = joinPoint.getSignature();
		MethodSignature methodSignature = (MethodSignature) signature;
		Method method = methodSignature.getMethod();

		if (method != null) {
			return method.getAnnotation(Log.class);
		}
		return null;
	}

}