SwordFish_Interface_Service/utils/api_util.go

package utils

import (
	// "context"
	"fmt"
	"log"
	"sfbase/global"
	"sfbase/redis"
	"sfbase/utils"
	"sfis/db"
	"sfis/lock"
	"sfis/model"
	"sfis/model/response"
	"strings"
	"time"

	"github.com/gin-gonic/gin"
	"go.uber.org/zap"
)

func Check(appID string, productID int, c *gin.Context, getData func() ([]map[string]interface{}, int, error), param, ip string) {
	lock.MainLock.Lock()
	userLock := lock.UserLockMap[appID]
	lock.MainLock.Unlock()
	var err error
	datas := []map[string]interface{}{}
	orderCode := ""
	errStr := ""
	/**
	第二步:用户接口产品校验-加锁处理
	*/
	//2.1 取用户接口状态校验-可加锁也可不加锁 这个没有太严谨
	//userLock.Lock()
	userProduct := &model.UserProduct{}
	db.GetSFISDB().First(userProduct, &model.UserProduct{AppID: appID, ProductID: productID})
	//userLock.Unlock()
	if userProduct.ID == 0 {
		response.FailWithDetailed(response.InterfaceDeleted, nil, "该用户接口未购买", c)
		return
	} else if userProduct.InterfaceStatus != 0 {
		response.FailWithDetailed(response.InterfaceDeleted, nil, "该用户接口暂不提供服务", c)
		return
	}
	//校验是否过期
	now := time.Now().Unix()
	end := userProduct.EndAt
	if now > end.Unix() {
		response.FailWithDetailed(response.InterfaceExpired, nil, "剩余量已过期", c)
		return
	}
	//校验每日调用上限
	limittodaykey := fmt.Sprintf("limittoday_%d_%d_%s", time.Now().Day(), productID, appID)
	limittoday := redis.GetInt("limit", limittodaykey)
	if limittoday >= userProduct.CallTimesLimitDay { //当天调用超过次数
		response.FailWithDetailed(response.MoreThanEveryDayDataNumberLimit, nil, "请求超过每日调用总量限制", c)
		return
	} else {
		if limittoday == 0 {
			_, max := utils.GetDayMinMax(time.Now())
			redis.Put("limit", limittodaykey, 0, int(max-now))
		}
	}
	//2.2 取用户(产品余量|钱包账户余额)校验-必须加锁
	costModel := userProduct.CostModel //扣费模式 0扣余量,1-扣余额
	product := GetProductByID(productID)
	userLock.Lock()
	log.Println(param + "锁住......")
	//
	// ctx, _ := context.WithTimeout(c, 20*time.Second)
	// go func() {
	// 	var i = 0
	// 	for {
	// 		select {
	// 		case <-ctx.Done():
	// 			userLock.Unlock()
	// 			return
	// 		case <-time.After(time.Second * time.Duration(2)):
	// 			i++
	// 			if i == 10 {
	// 				userLock.Unlock()
	// 				return
	// 			}
	// 			continue
	// 		}
	// 	}
	// }()
	// time.Sleep(time.Second * time.Duration(25))
	//
	db.GetSFISDB().First(userProduct, &model.UserProduct{AppID: appID, ProductID: productID})
	// costModel = 0
	switch costModel {
	case 0:
		//按剩余量扣费
		datas, orderCode, err, errStr = costByLeftNum(getData, appID, productID, userProduct, product, param, ip)
	case 1:
		//按账户钱包余额扣费
		datas, orderCode, err, errStr = costByAccountBalance(getData, appID, productID, userProduct, product, param, ip)
	case 2:
		//优先扣剩余量,剩余量为0,扣钱包余额
	}
	userLock.Unlock()
	log.Println(param + "解锁......")
	if err == nil {
		db.GetQyfw().Save("user_data", map[string]interface{}{
			"app_id":          appID,
			"result_num":      len(datas),
			"result_content":  datas,
			"order_code":      orderCode,
			"status":          200,
			"user_product_id": userProduct.ID,
			"create_at":       time.Now().Unix(),
		})
		limittodaykey := fmt.Sprintf("limittoday_%d_%d_%s", time.Now().Day(), userProduct.ProductID, userProduct.AppID)
		redis.Incr("limit", limittodaykey)
		response.FailWithDetailed(response.SUCCESS, datas, "OK", c)
	} else {
		if strings.Contains(errStr, "不足") {
			response.FailWithDetailed(response.LeftNumEmpty, nil, errStr, c)
		} else {
			global.Logger.Error("数据库操作失败", zap.Any("error:", err))
			response.FailWithDetailed(response.QueryError, nil, "内部错误", c)
		}
	}
}