63 lines
1.8 KiB
Go
63 lines
1.8 KiB
Go
package provisioner
|
|
|
|
import (
|
|
"encoding/json"
|
|
"time"
|
|
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
// Duration is a wrapper around Time.Duration to aid with marshal/unmarshal.
|
|
type Duration struct {
|
|
time.Duration
|
|
}
|
|
|
|
// NewDuration parses a duration string and returns a Duration type or and error
|
|
// if the given string is not a duration.
|
|
func NewDuration(s string) (*Duration, error) {
|
|
d, err := time.ParseDuration(s)
|
|
if err != nil {
|
|
return nil, errors.Wrapf(err, "error parsing %s as duration", s)
|
|
}
|
|
return &Duration{Duration: d}, nil
|
|
}
|
|
|
|
// MarshalJSON parses a duration string and sets it to the duration.
|
|
//
|
|
// A duration string is a possibly signed sequence of decimal numbers, each with
|
|
// optional fraction and a unit suffix, such as "300ms", "-1.5h" or "2h45m".
|
|
// Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h".
|
|
func (d *Duration) MarshalJSON() ([]byte, error) {
|
|
return json.Marshal(d.Duration.String())
|
|
}
|
|
|
|
// UnmarshalJSON parses a duration string and sets it to the duration.
|
|
//
|
|
// A duration string is a possibly signed sequence of decimal numbers, each with
|
|
// optional fraction and a unit suffix, such as "300ms", "-1.5h" or "2h45m".
|
|
// Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h".
|
|
func (d *Duration) UnmarshalJSON(data []byte) (err error) {
|
|
var (
|
|
s string
|
|
dd time.Duration
|
|
)
|
|
if d == nil {
|
|
return errors.New("duration cannot be nil")
|
|
}
|
|
if err = json.Unmarshal(data, &s); err != nil {
|
|
return errors.Wrapf(err, "error unmarshaling %s", data)
|
|
}
|
|
if dd, err = time.ParseDuration(s); err != nil {
|
|
return errors.Wrapf(err, "error parsing %s as duration", s)
|
|
}
|
|
d.Duration = dd
|
|
return
|
|
}
|
|
|
|
// Value returns 0 if the duration is null, the inner duration otherwise.
|
|
func (d *Duration) Value() time.Duration {
|
|
if d == nil {
|
|
return 0
|
|
}
|
|
return d.Duration
|
|
}
|