package com.njcn.user.api.fallback;

import com.njcn.common.pojo.enums.response.CommonResponseEnum;
import com.njcn.common.pojo.exception.BusinessException;
import com.njcn.common.pojo.response.HttpResult;
import com.njcn.user.api.AppUserFeignClient;
import com.njcn.user.api.UserFeignClient;
import com.njcn.user.pojo.dto.UserDTO;
import com.njcn.user.pojo.po.User;
import com.njcn.user.utils.UserEnumUtil;
import feign.hystrix.FallbackFactory;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import java.util.List;

/**
 * @author hongawen
 * @version 1.0.0
 * @date 2021年08月24日 10:21
 */
@Slf4j
@Component
public class AppUserFeignClientFallbackFactory implements FallbackFactory<AppUserFeignClient> {


    /**
     * 输出远程请求接口异常日志
     * @param cause RPC请求异常
     */
    @Override
    public AppUserFeignClient create(Throwable cause) {
        //判断抛出异常是否为解码器抛出的业务异常
        Enum<?> exceptionEnum = CommonResponseEnum.SERVICE_FALLBACK;
        if(cause.getCause() instanceof BusinessException){
            BusinessException businessException = (BusinessException) cause.getCause();
            exceptionEnum = UserEnumUtil.getExceptionEnum(businessException.getResult());
        }
        Enum<?> finalExceptionEnum = exceptionEnum;
        return new AppUserFeignClient() {

            @Override
            public HttpResult<List<User>> getAdminInfo() {
                log.error("{}异常，降级处理，异常为：{}","获取业务管理员信息",cause.toString());
                throw new BusinessException(finalExceptionEnum);
            }

        };
    }
}
