/
disk.go
48 lines (41 loc) · 1.22 KB
/
disk.go
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package cmd
import (
"fmt"
"github.com/LINBIT/virter/pkg/cliutils"
"github.com/rck/unit"
)
// DiskArg represents a disk that can be passed to virter via a command line argument.
type DiskArg struct {
Name string `arg:"name"`
Size Size `arg:"size"`
Format string `arg:"format,qcow2"`
Bus string `arg:"bus,virtio"`
Pool string `arg:"pool,"`
}
type Size struct {
KiB uint64
}
func (s *Size) UnmarshalText(text []byte) error {
u := unit.MustNewUnit(sizeUnits)
val, err := u.ValueFromString(string(text))
if err != nil {
return fmt.Errorf("invalid size: %w", err)
}
signedSizeKiB := val.Value / sizeUnits["K"]
if signedSizeKiB < 0 {
return fmt.Errorf("invalid size: must be positive number")
}
s.KiB = uint64(signedSizeKiB)
return nil
}
func (d *DiskArg) GetName() string { return d.Name }
func (d *DiskArg) GetSizeKiB() uint64 { return d.Size.KiB }
func (d *DiskArg) GetFormat() string { return d.Format }
func (d *DiskArg) GetBus() string { return d.Bus }
func (d *DiskArg) GetPool() string { return d.Pool }
// Set implements flag.Value.Set.
func (d *DiskArg) Set(str string) error {
return cliutils.Parse(str, d)
}
// Type implements pflag.Value.Type.
func (d *DiskArg) Type() string { return "disk" }