DockerCLI/cli/command/formatter/disk_usage.go

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package formatter
import (
"bytes"
"fmt"
"strings"
"text/template"
"github.com/docker/distribution/reference"
"github.com/docker/docker/api/types"
units "github.com/docker/go-units"
)
const (
defaultDiskUsageImageTableFormat = "table {{.Repository}}\t{{.Tag}}\t{{.ID}}\t{{.CreatedSince}}\t{{.VirtualSize}}\t{{.SharedSize}}\t{{.UniqueSize}}\t{{.Containers}}"
defaultDiskUsageContainerTableFormat = "table {{.ID}}\t{{.Image}}\t{{.Command}}\t{{.LocalVolumes}}\t{{.Size}}\t{{.RunningFor}}\t{{.Status}}\t{{.Names}}"
defaultDiskUsageVolumeTableFormat = "table {{.Name}}\t{{.Links}}\t{{.Size}}"
defaultDiskUsageBuildCacheTableFormat = "table {{.ID}}\t{{.CacheType}}\t{{.Size}}\t{{.CreatedSince}}\t{{.LastUsedSince}}\t{{.UsageCount}}\t{{.Shared}}"
defaultDiskUsageTableFormat = "table {{.Type}}\t{{.TotalCount}}\t{{.Active}}\t{{.Size}}\t{{.Reclaimable}}"
typeHeader = "TYPE"
totalHeader = "TOTAL"
activeHeader = "ACTIVE"
reclaimableHeader = "RECLAIMABLE"
containersHeader = "CONTAINERS"
sharedSizeHeader = "SHARED SIZE"
uniqueSizeHeader = "UNIQUE SIZE"
)
// DiskUsageContext contains disk usage specific information required by the formatter, encapsulate a Context struct.
type DiskUsageContext struct {
Context
Verbose bool
LayersSize int64
Images []*types.ImageSummary
Containers []*types.Container
Volumes []*types.Volume
BuildCache []*types.BuildCache
BuilderSize int64
}
func (ctx *DiskUsageContext) startSubsection(format string) (*template.Template, error) {
ctx.buffer = bytes.NewBufferString("")
ctx.header = ""
ctx.Format = Format(format)
ctx.preFormat()
return ctx.parseFormat()
}
// NewDiskUsageFormat returns a format for rendering an DiskUsageContext
func NewDiskUsageFormat(source string, verbose bool) Format {
switch {
case verbose && source == RawFormatKey:
format := `{{range .Images}}type: Image
` + NewImageFormat(source, false, true) + `
{{end -}}
{{range .Containers}}type: Container
` + NewContainerFormat(source, false, true) + `
{{end -}}
{{range .Volumes}}type: Volume
` + NewVolumeFormat(source, false) + `
{{end -}}
{{range .BuildCache}}type: Build Cache
` + NewBuildCacheFormat(source, false) + `
{{end -}}`
return format
case !verbose && source == TableFormatKey:
return Format(defaultDiskUsageTableFormat)
case !verbose && source == RawFormatKey:
format := `type: {{.Type}}
total: {{.TotalCount}}
active: {{.Active}}
size: {{.Size}}
reclaimable: {{.Reclaimable}}
`
return Format(format)
default:
return Format(source)
}
}
func (ctx *DiskUsageContext) Write() (err error) {
if ctx.Verbose {
return ctx.verboseWrite()
}
ctx.buffer = bytes.NewBufferString("")
ctx.preFormat()
tmpl, err := ctx.parseFormat()
if err != nil {
return err
}
err = ctx.contextFormat(tmpl, &diskUsageImagesContext{
totalSize: ctx.LayersSize,
images: ctx.Images,
})
if err != nil {
return err
}
err = ctx.contextFormat(tmpl, &diskUsageContainersContext{
containers: ctx.Containers,
})
if err != nil {
return err
}
err = ctx.contextFormat(tmpl, &diskUsageVolumesContext{
volumes: ctx.Volumes,
})
if err != nil {
return err
}
err = ctx.contextFormat(tmpl, &diskUsageBuilderContext{
builderSize: ctx.BuilderSize,
buildCache: ctx.BuildCache,
})
if err != nil {
return err
}
diskUsageContainersCtx := diskUsageContainersContext{containers: []*types.Container{}}
diskUsageContainersCtx.Header = SubHeaderContext{
"Type": typeHeader,
"TotalCount": totalHeader,
"Active": activeHeader,
"Size": SizeHeader,
"Reclaimable": reclaimableHeader,
}
ctx.postFormat(tmpl, &diskUsageContainersCtx)
return err
}
type diskUsageContext struct {
Images []*imageContext
Containers []*containerContext
Volumes []*volumeContext
BuildCache []*buildCacheContext
}
func (ctx *DiskUsageContext) verboseWrite() error {
duc := &diskUsageContext{
Images: make([]*imageContext, 0, len(ctx.Images)),
Containers: make([]*containerContext, 0, len(ctx.Containers)),
Volumes: make([]*volumeContext, 0, len(ctx.Volumes)),
BuildCache: make([]*buildCacheContext, 0, len(ctx.BuildCache)),
}
trunc := ctx.Format.IsTable()
// First images
for _, i := range ctx.Images {
repo := "<none>"
tag := "<none>"
if len(i.RepoTags) > 0 && !isDangling(*i) {
// Only show the first tag
ref, err := reference.ParseNormalizedNamed(i.RepoTags[0])
if err != nil {
continue
}
if nt, ok := ref.(reference.NamedTagged); ok {
repo = reference.FamiliarName(ref)
tag = nt.Tag()
}
}
duc.Images = append(duc.Images, &imageContext{
repo: repo,
tag: tag,
trunc: trunc,
i: *i,
})
}
// Now containers
for _, c := range ctx.Containers {
// Don't display the virtual size
c.SizeRootFs = 0
duc.Containers = append(duc.Containers, &containerContext{trunc: trunc, c: *c})
}
// And volumes
for _, v := range ctx.Volumes {
duc.Volumes = append(duc.Volumes, &volumeContext{v: *v})
}
// And build cache
buildCacheSort(ctx.BuildCache)
for _, v := range ctx.BuildCache {
duc.BuildCache = append(duc.BuildCache, &buildCacheContext{v: v, trunc: trunc})
}
if ctx.Format == TableFormatKey {
return ctx.verboseWriteTable(duc)
}
ctx.preFormat()
tmpl, err := ctx.parseFormat()
if err != nil {
return err
}
return tmpl.Execute(ctx.Output, duc)
}
func (ctx *DiskUsageContext) verboseWriteTable(duc *diskUsageContext) error {
tmpl, err := ctx.startSubsection(defaultDiskUsageImageTableFormat)
if err != nil {
return err
}
ctx.Output.Write([]byte("Images space usage:\n\n"))
for _, img := range duc.Images {
if err := ctx.contextFormat(tmpl, img); err != nil {
return err
}
}
ctx.postFormat(tmpl, newImageContext())
tmpl, err = ctx.startSubsection(defaultDiskUsageContainerTableFormat)
if err != nil {
return err
}
ctx.Output.Write([]byte("\nContainers space usage:\n\n"))
for _, c := range duc.Containers {
if err := ctx.contextFormat(tmpl, c); err != nil {
return err
}
}
ctx.postFormat(tmpl, newContainerContext())
tmpl, err = ctx.startSubsection(defaultDiskUsageVolumeTableFormat)
if err != nil {
return err
}
ctx.Output.Write([]byte("\nLocal Volumes space usage:\n\n"))
for _, v := range duc.Volumes {
if err := ctx.contextFormat(tmpl, v); err != nil {
return err
}
}
ctx.postFormat(tmpl, newVolumeContext())
tmpl, err = ctx.startSubsection(defaultDiskUsageBuildCacheTableFormat)
if err != nil {
return err
}
fmt.Fprintf(ctx.Output, "\nBuild cache usage: %s\n\n", units.HumanSize(float64(ctx.BuilderSize)))
for _, v := range duc.BuildCache {
if err := ctx.contextFormat(tmpl, v); err != nil {
return err
}
}
ctx.postFormat(tmpl, newBuildCacheContext())
return nil
}
type diskUsageImagesContext struct {
HeaderContext
totalSize int64
images []*types.ImageSummary
}
func (c *diskUsageImagesContext) MarshalJSON() ([]byte, error) {
return MarshalJSON(c)
}
func (c *diskUsageImagesContext) Type() string {
return "Images"
}
func (c *diskUsageImagesContext) TotalCount() string {
return fmt.Sprintf("%d", len(c.images))
}
func (c *diskUsageImagesContext) Active() string {
used := 0
for _, i := range c.images {
if i.Containers > 0 {
used++
}
}
return fmt.Sprintf("%d", used)
}
func (c *diskUsageImagesContext) Size() string {
return units.HumanSize(float64(c.totalSize))
}
func (c *diskUsageImagesContext) Reclaimable() string {
var used int64
for _, i := range c.images {
if i.Containers != 0 {
if i.VirtualSize == -1 || i.SharedSize == -1 {
continue
}
used += i.VirtualSize - i.SharedSize
}
}
reclaimable := c.totalSize - used
if c.totalSize > 0 {
return fmt.Sprintf("%s (%v%%)", units.HumanSize(float64(reclaimable)), (reclaimable*100)/c.totalSize)
}
return units.HumanSize(float64(reclaimable))
}
type diskUsageContainersContext struct {
HeaderContext
containers []*types.Container
}
func (c *diskUsageContainersContext) MarshalJSON() ([]byte, error) {
return MarshalJSON(c)
}
func (c *diskUsageContainersContext) Type() string {
return "Containers"
}
func (c *diskUsageContainersContext) TotalCount() string {
return fmt.Sprintf("%d", len(c.containers))
}
func (c *diskUsageContainersContext) isActive(container types.Container) bool {
return strings.Contains(container.State, "running") ||
strings.Contains(container.State, "paused") ||
strings.Contains(container.State, "restarting")
}
func (c *diskUsageContainersContext) Active() string {
used := 0
for _, container := range c.containers {
if c.isActive(*container) {
used++
}
}
return fmt.Sprintf("%d", used)
}
func (c *diskUsageContainersContext) Size() string {
var size int64
for _, container := range c.containers {
size += container.SizeRw
}
return units.HumanSize(float64(size))
}
func (c *diskUsageContainersContext) Reclaimable() string {
var reclaimable int64
var totalSize int64
for _, container := range c.containers {
if !c.isActive(*container) {
reclaimable += container.SizeRw
}
totalSize += container.SizeRw
}
if totalSize > 0 {
return fmt.Sprintf("%s (%v%%)", units.HumanSize(float64(reclaimable)), (reclaimable*100)/totalSize)
}
return units.HumanSize(float64(reclaimable))
}
type diskUsageVolumesContext struct {
HeaderContext
volumes []*types.Volume
}
func (c *diskUsageVolumesContext) MarshalJSON() ([]byte, error) {
return MarshalJSON(c)
}
func (c *diskUsageVolumesContext) Type() string {
return "Local Volumes"
}
func (c *diskUsageVolumesContext) TotalCount() string {
return fmt.Sprintf("%d", len(c.volumes))
}
func (c *diskUsageVolumesContext) Active() string {
used := 0
for _, v := range c.volumes {
if v.UsageData.RefCount > 0 {
used++
}
}
return fmt.Sprintf("%d", used)
}
func (c *diskUsageVolumesContext) Size() string {
var size int64
for _, v := range c.volumes {
if v.UsageData.Size != -1 {
size += v.UsageData.Size
}
}
return units.HumanSize(float64(size))
}
func (c *diskUsageVolumesContext) Reclaimable() string {
var reclaimable int64
var totalSize int64
for _, v := range c.volumes {
if v.UsageData.Size != -1 {
if v.UsageData.RefCount == 0 {
reclaimable += v.UsageData.Size
}
totalSize += v.UsageData.Size
}
}
if totalSize > 0 {
return fmt.Sprintf("%s (%v%%)", units.HumanSize(float64(reclaimable)), (reclaimable*100)/totalSize)
}
return units.HumanSize(float64(reclaimable))
}
type diskUsageBuilderContext struct {
HeaderContext
builderSize int64
buildCache []*types.BuildCache
}
func (c *diskUsageBuilderContext) MarshalJSON() ([]byte, error) {
return MarshalJSON(c)
}
func (c *diskUsageBuilderContext) Type() string {
return "Build Cache"
}
func (c *diskUsageBuilderContext) TotalCount() string {
return fmt.Sprintf("%d", len(c.buildCache))
}
func (c *diskUsageBuilderContext) Active() string {
numActive := 0
for _, bc := range c.buildCache {
if bc.InUse {
numActive++
}
}
return fmt.Sprintf("%d", numActive)
}
func (c *diskUsageBuilderContext) Size() string {
return units.HumanSize(float64(c.builderSize))
}
func (c *diskUsageBuilderContext) Reclaimable() string {
var inUseBytes int64
for _, bc := range c.buildCache {
if bc.InUse && !bc.Shared {
inUseBytes += bc.Size
}
}
return units.HumanSize(float64(c.builderSize - inUseBytes))
}