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UNIX timestamps in Golang
package timestamp
import (
type Timestamp time.Time
func (t *Timestamp) MarshalJSON() ([]byte, error) {
ts := time.Time(*t).Unix()
stamp := fmt.Sprint(ts)
return []byte(stamp), nil
func (t *Timestamp) UnmarshalJSON(b []byte) error {
ts, err := strconv.Atoi(string(b))
if err != nil {
return err
*t = Timestamp(time.Unix(int64(ts), 0))
return nil
func (t Timestamp) GetBSON() (interface{}, error) {
if time.Time(*t).IsZero() {
return nil, nil
return time.Time(*t), nil
func (t *Timestamp) SetBSON(raw bson.Raw) error {
var tm time.Time
if err := raw.Unmarshal(&tm); err != nil {
return err
*t = Timestamp(tm)
return nil
func (t *Timestamp) String() string {
return time.Time(*t).String()
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