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moby--moby/cli/command/formatter/volume.go

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package formatter
import (
"fmt"
"strings"
"github.com/docker/docker/api/types"
units "github.com/docker/go-units"
)
const (
defaultVolumeQuietFormat = "{{.Name}}"
defaultVolumeTableFormat = "table {{.Driver}}\t{{.Name}}"
volumeNameHeader = "VOLUME NAME"
mountpointHeader = "MOUNTPOINT"
linksHeader = "LINKS"
// Status header ?
)
// NewVolumeFormat returns a format for use with a volume Context
func NewVolumeFormat(source string, quiet bool) Format {
switch source {
case TableFormatKey:
if quiet {
return defaultVolumeQuietFormat
}
return defaultVolumeTableFormat
case RawFormatKey:
if quiet {
return `name: {{.Name}}`
}
return `name: {{.Name}}\ndriver: {{.Driver}}\n`
}
return Format(source)
}
// VolumeWrite writes formatted volumes using the Context
func VolumeWrite(ctx Context, volumes []*types.Volume) error {
render := func(format func(subContext subContext) error) error {
for _, volume := range volumes {
if err := format(&volumeContext{v: *volume}); err != nil {
return err
}
}
return nil
}
return ctx.Write(newVolumeContext(), render)
}
type volumeHeaderContext map[string]string
func (c volumeHeaderContext) Label(name string) string {
n := strings.Split(name, ".")
r := strings.NewReplacer("-", " ", "_", " ")
h := r.Replace(n[len(n)-1])
return h
}
type volumeContext struct {
HeaderContext
v types.Volume
}
func newVolumeContext() *volumeContext {
volumeCtx := volumeContext{}
volumeCtx.header = volumeHeaderContext{
"Name": volumeNameHeader,
"Driver": driverHeader,
"Scope": scopeHeader,
"Mountpoint": mountpointHeader,
"Labels": labelsHeader,
"Links": linksHeader,
"Size": sizeHeader,
}
return &volumeCtx
}
func (c *volumeContext) MarshalJSON() ([]byte, error) {
return marshalJSON(c)
}
func (c *volumeContext) Name() string {
return c.v.Name
}
func (c *volumeContext) Driver() string {
return c.v.Driver
}
func (c *volumeContext) Scope() string {
return c.v.Scope
}
func (c *volumeContext) Mountpoint() string {
return c.v.Mountpoint
}
func (c *volumeContext) Labels() string {
if c.v.Labels == nil {
return ""
}
var joinLabels []string
for k, v := range c.v.Labels {
joinLabels = append(joinLabels, fmt.Sprintf("%s=%s", k, v))
}
return strings.Join(joinLabels, ",")
}
func (c *volumeContext) Label(name string) string {
if c.v.Labels == nil {
return ""
}
return c.v.Labels[name]
}
func (c *volumeContext) Links() string {
if c.v.UsageData == nil {
return "N/A"
}
return fmt.Sprintf("%d", c.v.UsageData.RefCount)
}
func (c *volumeContext) Size() string {
if c.v.UsageData == nil {
return "N/A"
}
return units.HumanSize(float64(c.v.UsageData.Size))
}