쿠폰 이름 해시 로직 변경

coupon/helper.go

@@ -0,0 +1,59 @@
+package coupon
+
+import (
+	"crypto/md5"
+	"encoding/binary"
+	"encoding/hex"
+	"math/rand"
+	"strings"
+)
+
+func DisolveCouponCode(code string) (round string, key string) {
+	var final []byte
+	for _, n := range strings.Split(code, "-") {
+		nb, err := hex.DecodeString(n)
+		if err != nil {
+			// 형식 오류
+			return "", ""
+		}
+		final = append(final, nb...)
+	}
+
+	if len(final) != 8 {
+		// 형식 오류
+		return "", ""
+	}
+
+	uid := final[4:]
+	left := binary.BigEndian.Uint16(uid[0:2])
+	right := binary.BigEndian.Uint16(uid[2:4])
+
+	final = final[0:4]
+	xor := binary.LittleEndian.Uint32(final)
+	roundhashnum := xor ^ (uint32(left) * uint32(right))
+
+	roundhash := make([]byte, 4)
+	binary.BigEndian.PutUint32(roundhash, roundhashnum)
+
+	round = hex.EncodeToString(roundhash)
+	key = hex.EncodeToString(uid)
+
+	return
+}
+
+func MakeCouponRoundHash(name string) (hash string, roundNumber uint32) {
+	m5 := md5.New()
+	m5.Write([]byte(name))
+	hashbt := m5.Sum(nil)
+
+	roundbt := make([]byte, 8)
+	copy(roundbt, hashbt[:8])
+
+	roundseed := int64(binary.BigEndian.Uint64(roundbt))
+	roundhash := make([]byte, 4)
+	rand.New(rand.NewSource(roundseed)).Read(roundhash)
+	roundNumber = binary.BigEndian.Uint32(roundhash)
+	hash = hex.EncodeToString(roundhash)
+
+	return
+}

flagx/commandline.go

@@ -1,7 +1,6 @@
 package flagx
 
 import (
-	"encoding"
 	"flag"
 	"fmt"
 	"os"
@@ -125,9 +124,6 @@ func Duration(name string, value time.Duration, usage string) *time.Duration {
 	return findProperFlagSet(name).Duration(name, value, usage)
 }
 
-func TextVar(p encoding.TextUnmarshaler, name string, value encoding.TextMarshaler, usage string) {
-	findProperFlagSet(name).TextVar(p, name, value, usage)
-}
 func Func(name, usage string, fn func(string) error) {
 	findProperFlagSet(name).Func(name, usage, fn)
 }

go.mod

@@ -1,6 +1,6 @@
 module repositories.action2quare.com/ayo/gocommon
 
-go 1.19
+go 1.18
 
 replace repositories.action2quare.com/ayo/gocommon => ./
 

server.go

@@ -132,7 +132,8 @@ func (server *Server) shutdown() {
 		logger.Println("http server shutdown. healthcheckcounter :", t)
 		atomic.StoreInt64(&healthcheckcounter, math.MinInt64)
 
-		for cnt := 0; cnt < 100; {
+		timer := 600 // 0.1 * 600 = 1분
+		for cnt := 0; cnt < 100 && timer > 0; {
 			next := atomic.LoadInt64(&healthcheckcounter)
 			if next == t {
 				cnt++
@@ -141,6 +142,7 @@ func (server *Server) shutdown() {
 				cnt = 0
 			}
 			time.Sleep(100 * time.Millisecond)
+			timer--
 		}
 		logger.Println("http server shutdown. healthcheck completed")
 	} else {