Initial commit

pkg/utils/utils.go

@@ -0,0 +1,81 @@
+package utils
+
+import (
+	"database/sql/driver"
+	"fmt"
+	"github.com/gofrs/uuid"
+	"golang.org/x/crypto/bcrypt"
+	"net"
+	"strconv"
+	"time"
+)
+
+type JsonTime struct {
+	time.Time
+}
+
+func NewJsonTime(t time.Time) JsonTime {
+	return JsonTime{
+		Time: t,
+	}
+}
+
+func NowJsonTime() JsonTime {
+	return JsonTime{
+		Time: time.Now(),
+	}
+}
+
+func (t JsonTime) MarshalJSON() ([]byte, error) {
+	var stamp = fmt.Sprintf("\"%s\"", t.Format("2006-01-02 15:04:05"))
+	return []byte(stamp), nil
+}
+
+func (t JsonTime) Value() (driver.Value, error) {
+	var zeroTime time.Time
+	if t.Time.UnixNano() == zeroTime.UnixNano() {
+		return nil, nil
+	}
+	return t.Time, nil
+}
+
+func (t *JsonTime) Scan(v interface{}) error {
+	value, ok := v.(time.Time)
+	if ok {
+		*t = JsonTime{Time: value}
+		return nil
+	}
+	return fmt.Errorf("can not convert %v to timestamp", v)
+}
+
+type Bcrypt struct {
+	cost int
+}
+
+func (b *Bcrypt) Encode(password []byte) ([]byte, error) {
+	return bcrypt.GenerateFromPassword(password, b.cost)
+}
+
+func (b *Bcrypt) Match(hashedPassword, password []byte) error {
+	return bcrypt.CompareHashAndPassword(hashedPassword, password)
+}
+
+var Encoder = Bcrypt{
+	cost: bcrypt.DefaultCost,
+}
+
+func UUID() string {
+	v4, _ := uuid.NewV4()
+	return v4.String()
+}
+
+func Tcping(ip string, port int) bool {
+	var conn net.Conn
+	var err error
+
+	if conn, err = net.DialTimeout("tcp", ip+":"+strconv.Itoa(port), 2*time.Second); err != nil {
+		return false
+	}
+	defer conn.Close()
+	return true
+}