package com.zhgd.xmgl.config;

import com.zhgd.xmgl.util.RequestIdUtil;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.ProceedingJoinPoint;
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.slf4j.MDC;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.util.Map;

@Aspect
@Component
@Slf4j
public class TaskAspect {

    @Pointcut("@annotation(org.springframework.scheduling.annotation.Scheduled)")
    public void servicePointcut() {
        System.out.println("Pointcut: 不会被执行");
    }

    @Around("servicePointcut()")
    public void doAround(ProceedingJoinPoint jointPoint) throws Throwable {
        Map<String, String> context = MDC.getCopyOfContextMap();    //复制主线程MDC
        // 获取当前访问的class类及类名
        Class<?> clazz = jointPoint.getTarget().getClass();
        String clazzName = jointPoint.getTarget().getClass().getName();

        // 获取访问的方法名
        String methodName = jointPoint.getSignature().getName();
        try {

            if (null == context) {
                RequestIdUtil.setRequestId("-t");   //主线程没有MDC就自己生成一个
                log.info("task方法开始:{}",methodName);
            }

            // 获取方法所有参数及其类型
            Object[] args = jointPoint.getArgs();
            Class[] argClz = ((MethodSignature) jointPoint.getSignature()).getParameterTypes();
            // 获取访问的方法对象
            Method method = clazz.getDeclaredMethod(methodName, argClz);

            // 判断当前访问的方法是否存在指定注解
            if (method.isAnnotationPresent(Scheduled.class)) {
                Scheduled annotation = method.getAnnotation(Scheduled.class);

                // 获取注解标识值与注解描述
    //            String value = annotation.value();
    //            String desc = annotation.description();

                // 执行目标方法
                Object proceed = jointPoint.proceed();
            }
        } finally {
            if (null == context) {
                RequestIdUtil.clear();
                log.info("task方法结束：{}",methodName);
            }
        }
    }

}