open-nomad/helper/flags/autopilot_flags.go
2020-12-14 10:07:27 -06:00

104 lines
2 KiB
Go

package flags
// These flag type implementations are provided to maintain autopilot command
// backwards compatibility.
import (
"fmt"
"strconv"
"time"
)
// BoolValue provides a flag value that's aware if it has been set.
type BoolValue struct {
v *bool
}
// Merge will overlay this value if it has been set.
func (b *BoolValue) Merge(onto *bool) {
if b.v != nil {
*onto = *(b.v)
}
}
// Set implements the flag.Value interface.
func (b *BoolValue) Set(v string) error {
if b.v == nil {
b.v = new(bool)
}
var err error
*(b.v), err = strconv.ParseBool(v)
return err
}
// String implements the flag.Value interface.
func (b *BoolValue) String() string {
var current bool
if b.v != nil {
current = *(b.v)
}
return fmt.Sprintf("%v", current)
}
// DurationValue provides a flag value that's aware if it has been set.
type DurationValue struct {
v *time.Duration
}
// Merge will overlay this value if it has been set.
func (d *DurationValue) Merge(onto *time.Duration) {
if d.v != nil {
*onto = *(d.v)
}
}
// Set implements the flag.Value interface.
func (d *DurationValue) Set(v string) error {
if d.v == nil {
d.v = new(time.Duration)
}
var err error
*(d.v), err = time.ParseDuration(v)
return err
}
// String implements the flag.Value interface.
func (d *DurationValue) String() string {
var current time.Duration
if d.v != nil {
current = *(d.v)
}
return current.String()
}
// UintValue provides a flag value that's aware if it has been set.
type UintValue struct {
v *uint
}
// Merge will overlay this value if it has been set.
func (u *UintValue) Merge(onto *uint) {
if u.v != nil {
*onto = *(u.v)
}
}
// Set implements the flag.Value interface.
func (u *UintValue) Set(v string) error {
if u.v == nil {
u.v = new(uint)
}
parsed, err := strconv.ParseUint(v, 0, 64)
*(u.v) = (uint)(parsed)
return err
}
// String implements the flag.Value interface.
func (u *UintValue) String() string {
var current uint
if u.v != nil {
current = *(u.v)
}
return fmt.Sprintf("%v", current)
}