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UNIX timestamps in Golang
package timestamp
import (
"fmt"
"labix.org/v2/mgo/bson"
"strconv"
"time"
)
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()
}
@mcuadros
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Embedding the time.Time structure you can use the Timetamp struct like the original one

type Timestamp struct {
    time.Time
}

func (t *Timestamp) MarshalJSON() ([]byte, error) {
    ts := t.Time.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.Time = time.Unix(int64(ts), 0)

    return nil
}

@evillemez
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Thank you for this... was writing the same thing and stumbled across this.

@mkraft
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mkraft commented Jan 18, 2017

👍

@cescoferraro
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func (t *Timestamp) Time() time.Time {
	return time.Time(*t)
}

@nuvi-wagner
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How do you then create a new instance of a Timestamp? Using the time.Now() method for example?

@NgocSon159
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NgocSon159 commented May 30, 2019

This function help me a lot! Thanks you so much.
func (t *Timestamp) SetBSON(raw bson.Raw) error {
}

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