github.com/wlan0/docker@v1.5.0/pkg/timeutils/json.go (about)

     1  package timeutils
     2  
     3  import (
     4  	"errors"
     5  	"time"
     6  )
     7  
     8  const (
     9  	// RFC3339NanoFixed is our own version of RFC339Nano because we want one
    10  	// that pads the nano seconds part with zeros to ensure
    11  	// the timestamps are aligned in the logs.
    12  	RFC3339NanoFixed = "2006-01-02T15:04:05.000000000Z07:00"
    13  	// JSONFormat is the format used by FastMarshalJSON
    14  	JSONFormat = `"` + time.RFC3339Nano + `"`
    15  )
    16  
    17  // FastMarshalJSON avoids one of the extra allocations that
    18  // time.MarshalJSON is making.
    19  func FastMarshalJSON(t time.Time) (string, error) {
    20  	if y := t.Year(); y < 0 || y >= 10000 {
    21  		// RFC 3339 is clear that years are 4 digits exactly.
    22  		// See golang.org/issue/4556#c15 for more discussion.
    23  		return "", errors.New("time.MarshalJSON: year outside of range [0,9999]")
    24  	}
    25  	return t.Format(JSONFormat), nil
    26  }