eta_crawler/services/commodity_trade_dalian.go

package services

import (
	"bytes"
	"fmt"
	"github.com/PuerkitoBio/goquery"
	"hongze/hongze_data_crawler/models"
	"hongze/hongze_data_crawler/utils"
	"io/ioutil"
	"log"
	"mime/multipart"
	"net/http"
	"strconv"
	"strings"
	"time"
)

type SearchList struct {
	VarietyName string `description:"商品名称"`
	CarietyCode string `description:"商品名称对应的编码"`
	List        []SearchContractId
	ListSearch  []*SearchContractId
}

type SearchContractId struct {
	ContractId string `description:"商品类型"`
}

//同步 N天 之内的数据
func SyncRankingFromDalianDo() {
	for i := 200; i >= 0; i-- {
		SyncRankingFromDalianSearch(i)
	}
}

//大连交易所持单排名
func SyncRankingFromDalianSearch(dayNum int) (err error) {
	fmt.Println("start")
	defer func() {
		if err != nil {
			fmt.Println("RefreshDataFromDalian Err:" + err.Error())
			go utils.SendEmail(utils.APPNAME+"【"+utils.RunMode+"】"+"失败提醒", "RefreshDataFromDalian ErrMsg:"+err.Error(), utils.EmailSendToUsers)
		}
	}()
	//定义爬取时间
	endDate := time.Now().AddDate(0, 0, -dayNum).Format(utils.FormatDateTime)
	//endDate := time.Now().Format(utils.FormatDateTime)
	timeDate := utils.StrTimeToTime(endDate)
	currDate := timeDate.Format(utils.FormatDateUnSpace)
	year := timeDate.Year()
	month := timeDate.Format("01")
	var dayStr string
	day := timeDate.Day()
	if day < 10 {
		dayStr = "0" + strconv.Itoa(day)
	} else {
		dayStr = strconv.Itoa(day)
	}
	monthNum, _ := strconv.Atoi(month)
	month = strconv.Itoa(monthNum - 1) //获取时月份需要减一
	list, err := models.GetBaseFromTradeDalianDataList(timeDate.Format(utils.FormatDate))
	if err != nil {
		fmt.Println(err)
		return err
	}
	listDataMap := make(map[string]int)
	for _, v := range list {
		listDataMap[v.DealShortName+v.ClassifyType+v.DataTime] = v.BaseFromTradeDalianIndexId
	}

	var ContractId string
	var CarietyCode string
	var VarietyName string
	//模拟form表单请求
	url := "http://www.dce.com.cn/publicweb/quotesdata/memberDealPosiQuotes.html"
	method := "POST"
	payload := &bytes.Buffer{}
	writer := multipart.NewWriter(payload)
	_ = writer.WriteField("memberDealPosiQuotes.variety", CarietyCode)
	_ = writer.WriteField("memberDealPosiQuotes.trade_type", "0")
	_ = writer.WriteField("year", strconv.Itoa(year))
	_ = writer.WriteField("month", month)
	_ = writer.WriteField("day", dayStr)
	_ = writer.WriteField("contract.contract_id", ContractId)
	_ = writer.WriteField("contract.variety_id", CarietyCode)
	_ = writer.WriteField("currDate", currDate)
	err = writer.Close()
	if err != nil {
		utils.FileLog.Info("获取指标失败：" + currDate + VarietyName + ContractId)
		return err
	}
	client := &http.Client{}
	req, err := http.NewRequest(method, url, payload)
	if err != nil {
		return err
	}
	req.Header.Add("Cookie", "JSESSIONID=36ACF02A59227A3854F9D5D5E2FB5F2E; WMONID=R5ojcAIIcx-")
	req.Header.Set("Content-Type", writer.FormDataContentType())
	res, err := client.Do(req)
	if err != nil {
		return err
	}
	defer res.Body.Close()
	body, err := ioutil.ReadAll(res.Body)
	if err != nil {
		go utils.SendEmail(utils.APPNAME+"【"+utils.RunMode+"】"+"失败提醒", "RefreshDataFromDalian ErrMsg:"+err.Error()+"获取指标失败："+currDate+VarietyName+ContractId, utils.EmailSendToUsers)
		return err
	}
	exitProductMaps, _, varietyArrMaps := DoSearch(string(body))
	var items []*SearchList
	for k, v := range exitProductMaps {
		item := new(SearchList)
		item.VarietyName = v
		item.CarietyCode = varietyArrMaps[k]
		htmlBody, err := GetDalianHtmlBody(dayNum, "", item.CarietyCode, item.VarietyName)
		if err != nil {
			return err
		}
		listContractId := DoSearchMap(htmlBody)
		item.ListSearch = listContractId
		items = append(items, item)
	}
	for k, v := range items {
		for _, v2 := range v.ListSearch {
			fmt.Println(currDate, v.VarietyName, v2.ContractId, v.CarietyCode, k)
		}
	}
	SyncRankingFromDalian(dayNum, items)
	return err
}

//处理搜索条件初始
func DoSearch(body string) (exitProductMaps, exitContractIdMaps, varietyArrMaps map[int]string) {
	var str string
	str = body
	doc, err := goquery.NewDocumentFromReader(strings.NewReader(str))
	if err != nil {
		log.Fatal(err)
	}
	exitProductMap := make(map[int]string)
	exitContractIdMap := make(map[int]string)
	varietyArrMap := make(map[int]string)
	//var productName string
	ul := doc.Find(".selBox ul")
	var pNum int
	var cidNum int
	var vNum int
	ul.Each(func(i int, s *goquery.Selection) {
		//解析标签
		//fmt.Println(i, s.Text())
		ulTxt := s.Text()
		//fmt.Println(ulTxt)
		if ulTxt != "" && (i == 0 || i == 2) {
			ulTxtArr := strings.Split(ulTxt, "\n")
			for _, v := range ulTxtArr {
				v = strings.Replace(v, " ", "", -1)
				v = strings.Replace(v, "\n", "", -1)
				v = strings.Replace(v, "	", "", -1)
				if v != "" && len(v) > 0 {
					exitProductMap[pNum] = v
					pNum++
				}
			}
		}
		if ulTxt != "" && i == 3 {
			//fmt.Println(ulTxt)
			cidTxtArr := strings.Split(ulTxt, " ")
			for _, v := range cidTxtArr {
				v = strings.Replace(v, "\n", "", -1)
				v = strings.Replace(v, " ", "", -1)
				v = strings.Replace(v, "	", "", -1)
				if v != "" {
					exitContractIdMap[cidNum] = v
					cidNum++
				}
			}
		}
	})
	varietyArr := strings.Split(str, "onclick=\"javascript:setVariety('")
	for _, v := range varietyArr {
		strnum := strings.Index(v, "');")
		if strnum > 0 {
			varietyStr := v[0:strnum]
			if len(varietyStr) < 10 {
				//fmt.Println(strnum, varietyStr)
				varietyArrMap[vNum] = varietyStr
				vNum++
			}
		}
	}
	exitProductMaps = exitProductMap
	exitContractIdMaps = exitContractIdMap
	varietyArrMaps = varietyArrMap
	return
}

//处理搜索条件
func DoSearchMap(body string) (items []*SearchContractId) {
	var str string
	str = body
	doc, err := goquery.NewDocumentFromReader(strings.NewReader(str))
	if err != nil {
		log.Fatal(err)
	}
	exitContractIdMap := make(map[int]string)
	ul := doc.Find(".selBox ul")
	var cidNum int
	ul.Each(func(i int, s *goquery.Selection) {
		//解析标签
		ulTxt := s.Text()
		if ulTxt != "" && i == 3 {
			cidTxtArr := strings.Split(ulTxt, " ")
			for _, v := range cidTxtArr {
				v = strings.Replace(v, "\n", "", -1)
				v = strings.Replace(v, " ", "", -1)
				v = strings.Replace(v, "	", "", -1)
				if v != "" {
					exitContractIdMap[cidNum] = v
					cidNum++
				}
			}
		}
	})
	for _, v := range exitContractIdMap {
		item := new(SearchContractId)
		item.ContractId = v
		items = append(items, item)
	}
	return items
}

//处理解析Html
func DoHtml(body, name, contractId string, dateTime time.Time, listDataMap map[string]int) (err error) {
	defer func() {
		if err != nil {
			fmt.Println("RefreshDataFromDaLian Err:" + err.Error())
			go utils.SendEmail(utils.APPNAME+"【"+utils.RunMode+"】"+"失败提醒", "RefreshDataFromDaLian ErrMsg:"+err.Error(), utils.EmailSendToUsers)
		}
	}()
	str := body
	doc, err := goquery.NewDocumentFromReader(strings.NewReader(str))
	if err != nil {
		log.Fatal(err)
	}
	var isAdd bool
	addSql := `  INSERT INTO base_from_trade_dalian_index(rank,deal_short_name,deal_name,deal_code,deal_value,buy_short_name,deal_change,buy_name,buy_code,buy_value,buy_change,sold_short_name,sold_name,sold_code,sold_value,sold_change,frequency,classify_name,classify_type,create_time,modify_time,data_time) values  `
	table := doc.Find("table")
	var rank, shortName, dealValue, dealChange, buyName, buyValue, buyChange, soldName, soldValue, soldChange string
	table.Find("tr").Each(func(i int, tr *goquery.Selection) {
		tds := tr.Find("td")
		//fmt.Println(tds.Length(), "长度：", i)
		if tds.Length() == 0 || tds.Length() == 7 || i == 23 {
			tdText := tds.Text()
			utils.FileLog.Info(tdText)
		} else {
			item := new(models.BaseFromTradeDalianIndex)
			tds.Each(func(tk int, td *goquery.Selection) {
				tdText := td.Text()
				if tk == 0 { //名次
					rank = tdText
				}
				if tk == 1 { //会员简称
					shortName = tdText
				}
				if tk == 2 { //成交量
					dealValue = strings.Replace(tdText, ",", "", -1)
				}
				if tk == 3 { //增减
					dealChange = strings.Replace(tdText, ",", "", -1)
				}
				if tk == 5 { //会员简称
					buyName = tdText
				}
				if tk == 6 { //持买单量
					buyValue = strings.Replace(tdText, ",", "", -1)
				}
				if tk == 7 { //增减
					buyChange = strings.Replace(tdText, ",", "", -1)
				}

				if tk == 9 { //会员简称
					soldName = tdText
				}
				if tk == 10 { //持卖单量
					soldValue = strings.Replace(tdText, ",", "", -1)
				}
				if tk == 11 { //增减
					soldChange = strings.Replace(tdText, ",", "", -1)
				}
			})
			item.Rank = rank
			item.DealShortName = shortName
			item.DealName = shortName + "_成交量_" + contractId
			item.DealCode = DlIndexCodeGenerator(item.DealName, "deal")
			item.DealValue = dealValue
			item.BuyShortName = buyName
			item.DealChange = dealChange
			item.BuyName = buyName + "_持买单量_" + contractId
			item.BuyCode = DlIndexCodeGenerator(item.BuyName, "buy")
			item.BuyValue = buyValue
			item.BuyChange = buyChange
			item.SoldShortName = soldName
			item.SoldName = soldName + "_持卖单量_" + contractId
			item.SoldCode = DlIndexCodeGenerator(item.SoldName, "sold")
			item.SoldValue = soldValue
			item.SoldChange = soldChange
			item.Frequency = "日度"
			item.ClassifyName = name
			item.ClassifyType = contractId
			item.CreateTime = time.Now().Format(utils.FormatDateTime)
			item.ModifyTime = time.Now().Format(utils.FormatDateTime)
			item.DataTime = dateTime.Format(utils.FormatDate)
			if val, ok := listDataMap[item.DealShortName+item.ClassifyType+item.DataTime]; !ok {
				addSql += models.GetAddSql(item)
				isAdd = true
			} else {
				//更新
				err := models.UpdateBaseFromTradeDalianIndex(item, val)
				if err != nil {
					fmt.Println("UpdateBaseFromTradeDalianIndex err:", err)
				}
			}
		}
	})
	addSql = strings.TrimRight(addSql, ",")
	if isAdd {
		err = models.RefreshEdbDataByDaLian(addSql)
		if err != nil {
			return err
		}
	}
	return
}

func DlIndexCodeGenerator(indexName, suffix string) string {
	ineIndexCode, _ := ineIndexCodeMap[indexName]
	if ineIndexCode == "" {
		ineIndexCode = fmt.Sprintf("DL%s", time.Now().Format(utils.FormatDateTimeUnSpace)+strconv.Itoa(utils.GetRandInt(1, 100))+suffix)
		ineIndexCodeMap[indexName] = ineIndexCode
		err := models.AddBaseFromTradeMapping(indexName, ineIndexCode, "DL")
		if err != nil {
			fmt.Println("add Code err:", err)
		}
	}
	return ineIndexCode
}

//大连交易所持单排名
func GetDalianHtmlBody(dayNum int, contractId, carietyCode, varietyName string) (body string, err error) {
	defer func() {
		if err != nil {
			fmt.Println("GetDalianHtmlBody Err:" + err.Error())
			go utils.SendEmail(utils.APPNAME+"【"+utils.RunMode+"】"+"失败提醒", "GetDalianHtmlBody ErrMsg:"+err.Error(), utils.EmailSendToUsers)
		}
	}()

	//定义爬取时间
	endDate := time.Now().AddDate(0, 0, -dayNum).Format(utils.FormatDateTime)
	//endDate := time.Now().Format(utils.FormatDateTime)
	timeDate := utils.StrTimeToTime(endDate)
	currDate := timeDate.Format(utils.FormatDateUnSpace)
	year := timeDate.Year()
	month := timeDate.Format("01")
	var dayStr string
	day := timeDate.Day()
	if day < 10 {
		dayStr = "0" + strconv.Itoa(day)
	} else {
		dayStr = strconv.Itoa(day)
	}
	monthNum, _ := strconv.Atoi(month)
	month = strconv.Itoa(monthNum - 1) //获取时月份需要减一

	list, err := models.GetBaseFromTradeDalianDataList(timeDate.Format(utils.FormatDate))
	listDataMap := make(map[string]int)
	for _, v := range list {
		listDataMap[v.DealShortName+v.ClassifyType+v.DataTime] = v.BaseFromTradeDalianIndexId
	}
	if err != nil {
		fmt.Println(err)
		return
	}
	//模拟form表单请求
	url := "http://www.dce.com.cn/publicweb/quotesdata/memberDealPosiQuotes.html"
	method := "POST"
	payload := &bytes.Buffer{}
	writer := multipart.NewWriter(payload)
	_ = writer.WriteField("memberDealPosiQuotes.variety", carietyCode)
	_ = writer.WriteField("memberDealPosiQuotes.trade_type", "0")
	_ = writer.WriteField("year", strconv.Itoa(year))
	_ = writer.WriteField("month", month)
	_ = writer.WriteField("day", dayStr)
	_ = writer.WriteField("contract.contract_id", contractId)
	_ = writer.WriteField("contract.variety_id", carietyCode)
	_ = writer.WriteField("currDate", currDate)
	err = writer.Close()
	if err != nil {
		utils.FileLog.Info("获取指标失败：" + currDate + varietyName + contractId)
		return
	}
	client := &http.Client{}
	req, err := http.NewRequest(method, url, payload)
	if err != nil {
		return
	}
	req.Header.Add("Cookie", "JSESSIONID=36ACF02A59227A3854F9D5D5E2FB5F2E; WMONID=R5ojcAIIcx-")
	req.Header.Set("Content-Type", writer.FormDataContentType())
	res, err := client.Do(req)
	if err != nil {
		return
	}
	defer res.Body.Close()
	htmlBody, err := ioutil.ReadAll(res.Body)
	if err != nil {
		go utils.SendEmail(utils.APPNAME+"【"+utils.RunMode+"】"+"失败提醒", "GetDalianHtmlBody ErrMsg:"+err.Error()+"获取指标失败："+currDate+varietyName+contractId, utils.EmailSendToUsers)
		return
	}
	body = string(htmlBody)
	return
}

//大连交易所持单排名
func SyncRankingFromDalian(dayNum int, searchList []*SearchList) (err error) {
	fmt.Println("start")
	defer func() {
		if err != nil {
			fmt.Println("RefreshDataFromDalian Err:" + err.Error())
			go utils.SendEmail(utils.APPNAME+"【"+utils.RunMode+"】"+"失败提醒", "RefreshDataFromDalian ErrMsg:"+err.Error(), utils.EmailSendToUsers)
		}
	}()
	//n := utils.GetRandInt(10, 120)
	//time.Sleep(time.Duration(n) * time.Second)
	//searchList := []SearchList{
	//	SearchList{VarietyName: "豆一", CarietyCode: "a", List: []SearchContractId{SearchContractId{ContractId: "a2111"}, {ContractId: "a2201"}, {ContractId: "a2203"}}},
	//	SearchList{VarietyName: "豆二", CarietyCode: "b", List: []SearchContractId{SearchContractId{ContractId: "b2112"}, {ContractId: "b2201"}}},
	//	SearchList{VarietyName: "豆粕", CarietyCode: "m", List: []SearchContractId{SearchContractId{ContractId: "m2111"}, {ContractId: "m2112"}, {ContractId: "m2201"}, {ContractId: "m2203"}, {ContractId: "m2205"}, {ContractId: "m2207"}, {ContractId: "m2208"}, {ContractId: "m2209"}}},
	//	SearchList{VarietyName: "豆油", CarietyCode: "y", List: []SearchContractId{SearchContractId{ContractId: "y2112"}, {ContractId: "y2201"}, {ContractId: "y2203"}, {ContractId: "y2205"}, {ContractId: "y2207"}, {ContractId: "y2208"}}},
	//	SearchList{VarietyName: "棕榈油", CarietyCode: "p", List: []SearchContractId{SearchContractId{ContractId: "p2112"}, {ContractId: "p2201"}, {ContractId: "p2202"}, {ContractId: "p2203"}, {ContractId: "p2204"}, {ContractId: "p2205"}}},
	//	SearchList{VarietyName: "玉米", CarietyCode: "c", List: []SearchContractId{SearchContractId{ContractId: "c2111"}, {ContractId: "c2201"}, {ContractId: "c2203"}, {ContractId: "c2205"}, {ContractId: "c2207"}}},
	//	SearchList{VarietyName: "玉米淀粉", CarietyCode: "cs", List: []SearchContractId{SearchContractId{ContractId: "cs2111"}, {ContractId: "cs2201"}, {ContractId: "cs2203"}}},
	//	SearchList{VarietyName: "鸡蛋", CarietyCode: "jd", List: []SearchContractId{SearchContractId{ContractId: "jd2201"}, {ContractId: "jd2202"}, {ContractId: "jd2203"}, {ContractId: "jd2204"}, {ContractId: "jd2205"}}},
	//	SearchList{VarietyName: "粳米", CarietyCode: "rr", List: []SearchContractId{SearchContractId{ContractId: "rr2112"}}},
	//	//SearchList{VarietyName: "纤维板", CarietyCode: "fb", List:[]SearchContractId{}}, //无数据
	//	//SearchList{VarietyName: "胶合板", CarietyCode: "bb", List:[]SearchContractId{}}, //无数据
	//	SearchList{VarietyName: "生猪", CarietyCode: "lh", List: []SearchContractId{SearchContractId{ContractId: "lh2201"}, {ContractId: "lh2203"}, {ContractId: "lh2205"}}},
	//	SearchList{VarietyName: "聚乙烯", CarietyCode: "l", List: []SearchContractId{SearchContractId{ContractId: "l2112"}, {ContractId: "l2201"}, {ContractId: "l2202"}, {ContractId: "l2203"}, {ContractId: "l2204"}, {ContractId: "l2205"}}},
	//	SearchList{VarietyName: "聚氯乙烯", CarietyCode: "v", List: []SearchContractId{SearchContractId{ContractId: "v2111"}, {ContractId: "v2112"}, {ContractId: "v2201"}, {ContractId: "v2202"}, {ContractId: "v2203"}, {ContractId: "v2204"}, {ContractId: "v2205"}}},
	//	SearchList{VarietyName: "聚丙烯", CarietyCode: "pp", List: []SearchContractId{SearchContractId{ContractId: "pp2112"}, {ContractId: "pp2201"}, {ContractId: "pp2202"}, {ContractId: "pp2203"}, {ContractId: "pp2204"}, {ContractId: "pp2205"}}},
	//	SearchList{VarietyName: "苯乙烯", CarietyCode: "eb", List: []SearchContractId{SearchContractId{ContractId: "eb2111"}, {ContractId: "eb2112"}, {ContractId: "eb2201"}, {ContractId: "eb2202"}}},
	//	SearchList{VarietyName: "焦炭", CarietyCode: "j", List: []SearchContractId{SearchContractId{ContractId: "j2201"}, {ContractId: "j2205"}}},
	//	SearchList{VarietyName: "焦煤", CarietyCode: "jm", List: []SearchContractId{SearchContractId{ContractId: "jm2201"}, {ContractId: "jm2205"}}},
	//	SearchList{VarietyName: "铁矿石", CarietyCode: "i", List: []SearchContractId{SearchContractId{ContractId: "i2112"}, {ContractId: "i2201"}, {ContractId: "i2202"}, {ContractId: "i2203"}, {ContractId: "i2204"}, {ContractId: "i2205"}, {ContractId: "i2206"}, {ContractId: "i2207"}, {ContractId: "i2208"}, {ContractId: "i2209"}}},
	//	SearchList{VarietyName: "乙二醇", CarietyCode: "eg", List: []SearchContractId{SearchContractId{ContractId: "eg2112"}, {ContractId: "eg2201"}, {ContractId: "eg2202"}, {ContractId: "eg2203"}, {ContractId: "eg2205"}}},
	//	SearchList{VarietyName: "液化石油气", CarietyCode: "pg", List: []SearchContractId{SearchContractId{ContractId: "pg2111"}, {ContractId: "pg2112"}, {ContractId: "pg2201"}, {ContractId: "pg2202"}}},
	//}

	//定义爬取时间
	endDate := time.Now().AddDate(0, 0, -dayNum).Format(utils.FormatDateTime)
	//endDate := time.Now().Format(utils.FormatDateTime)
	timeDate := utils.StrTimeToTime(endDate)
	currDate := timeDate.Format(utils.FormatDateUnSpace)
	year := timeDate.Year()
	month := timeDate.Format("01")
	var dayStr string
	day := timeDate.Day()
	if day < 10 {
		dayStr = "0" + strconv.Itoa(day)
	} else {
		dayStr = strconv.Itoa(day)
	}
	monthNum, _ := strconv.Atoi(month)
	month = strconv.Itoa(monthNum - 1) //获取时月份需要减一

	list, err := models.GetBaseFromTradeDalianDataList(timeDate.Format(utils.FormatDate))
	listDataMap := make(map[string]int)
	for _, v := range list {
		listDataMap[v.DealShortName+v.ClassifyType+v.DataTime] = v.BaseFromTradeDalianIndexId
	}
	if err != nil {
		fmt.Println(err)
		return err
	}
	for _, v := range searchList {
		for _, v2 := range v.ListSearch {
			//模拟form表单请求
			url := "http://www.dce.com.cn/publicweb/quotesdata/memberDealPosiQuotes.html"
			method := "POST"
			payload := &bytes.Buffer{}
			writer := multipart.NewWriter(payload)
			_ = writer.WriteField("memberDealPosiQuotes.variety", v.CarietyCode)
			_ = writer.WriteField("memberDealPosiQuotes.trade_type", "0")
			_ = writer.WriteField("year", strconv.Itoa(year))
			_ = writer.WriteField("month", month)
			_ = writer.WriteField("day", dayStr)
			_ = writer.WriteField("contract.contract_id", v2.ContractId)
			_ = writer.WriteField("contract.variety_id", v.CarietyCode)
			_ = writer.WriteField("currDate", currDate)
			err := writer.Close()
			fmt.Println(currDate, v.VarietyName, v2.ContractId)
			if err != nil {
				utils.FileLog.Info("获取指标失败：" + currDate + v.VarietyName + v2.ContractId)
				return err
			}
			client := &http.Client{}
			req, err := http.NewRequest(method, url, payload)
			if err != nil {
				return err
			}

			req.Header.Add("Cookie", "JSESSIONID=36ACF02A59227A3854F9D5D5E2FB5F2E; WMONID=R5ojcAIIcx-")
			req.Header.Set("Content-Type", writer.FormDataContentType())
			res, err := client.Do(req)
			if err != nil {
				return err
			}
			defer res.Body.Close()
			body, err := ioutil.ReadAll(res.Body)
			if err != nil {
				go utils.SendEmail(utils.APPNAME+"【"+utils.RunMode+"】"+"失败提醒", "RefreshDataFromDalian ErrMsg:"+err.Error()+"获取指标失败："+currDate+v.VarietyName+v2.ContractId, utils.EmailSendToUsers)
				return err
			}
			err = DoHtml(string(body), v.VarietyName, v2.ContractId, timeDate, listDataMap)
			if err != nil {
				return err
			}
		}
	}
	return err
}