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package system
import (
"fmt"
"math"
"os"
"strings"
"time"
"github.com/containers/common/pkg/completion"
"github.com/containers/common/pkg/report"
"github.com/containers/podman/v4/cmd/podman/registry"
"github.com/containers/podman/v4/cmd/podman/validate"
"github.com/containers/podman/v4/pkg/domain/entities"
"github.com/docker/go-units"
"github.com/spf13/cobra"
)
var (
dfSystemDescription = `
podman system df
Show podman disk usage
`
dfSystemCommand = &cobra.Command{
Use: "df [options]",
Args: validate.NoArgs,
Short: "Show podman disk usage",
Long: dfSystemDescription,
RunE: df,
ValidArgsFunction: completion.AutocompleteNone,
}
)
var (
dfOptions entities.SystemDfOptions
)
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: dfSystemCommand,
Parent: systemCmd,
})
flags := dfSystemCommand.Flags()
flags.BoolVarP(&dfOptions.Verbose, "verbose", "v", false, "Show detailed information on disk usage")
formatFlagName := "format"
flags.StringVar(&dfOptions.Format, formatFlagName, "", "Pretty-print images using a Go template")
_ = dfSystemCommand.RegisterFlagCompletionFunc(formatFlagName, completion.AutocompleteNone)
}
func df(cmd *cobra.Command, args []string) error {
reports, err := registry.ContainerEngine().SystemDf(registry.Context(), dfOptions)
if err != nil {
return err
}
if dfOptions.Verbose {
return printVerbose(cmd, reports)
}
return printSummary(cmd, reports)
}
func printSummary(cmd *cobra.Command, reports *entities.SystemDfReport) error {
var (
dfSummaries []*dfSummary
active int
size, reclaimable int64
)
for _, i := range reports.Images {
if i.Containers > 0 {
active++
}
size += i.Size
if i.Containers < 1 {
reclaimable += i.Size
}
}
imageSummary := dfSummary{
Type: "Images",
Total: len(reports.Images),
Active: active,
RawSize: size,
RawReclaimable: reclaimable,
}
dfSummaries = append(dfSummaries, &imageSummary)
// Containers
var (
conActive int
conSize, conReclaimable int64
)
for _, c := range reports.Containers {
if c.Status == "running" {
conActive++
} else {
conReclaimable += c.RWSize
}
conSize += c.RWSize
}
containerSummary := dfSummary{
Type: "Containers",
Total: len(reports.Containers),
Active: conActive,
RawSize: conSize,
RawReclaimable: conReclaimable,
}
dfSummaries = append(dfSummaries, &containerSummary)
// Volumes
var (
activeVolumes int
volumesSize, volumesReclaimable int64
)
for _, v := range reports.Volumes {
activeVolumes += v.Links
volumesSize += v.Size
volumesReclaimable += v.ReclaimableSize
}
volumeSummary := dfSummary{
Type: "Local Volumes",
Total: len(reports.Volumes),
Active: activeVolumes,
RawSize: volumesSize,
RawReclaimable: volumesReclaimable,
}
dfSummaries = append(dfSummaries, &volumeSummary)
// need to give un-exported fields
hdrs := report.Headers(dfSummary{}, map[string]string{
"Size": "SIZE",
"Reclaimable": "RECLAIMABLE",
})
rpt := report.New(os.Stdout, cmd.Name())
defer rpt.Flush()
var err error
if cmd.Flags().Changed("format") {
rpt, err = rpt.Parse(report.OriginUser, dfOptions.Format)
} else {
row := "{{range . }}{{.Type}}\t{{.Total}}\t{{.Active}}\t{{.Size}}\t{{.Reclaimable}}\n{{end -}}"
rpt, err = rpt.Parse(report.OriginPodman, row)
}
if err != nil {
return err
}
return writeTemplate(rpt, hdrs, dfSummaries)
}
func printVerbose(cmd *cobra.Command, reports *entities.SystemDfReport) error { //nolint:interfacer
rpt := report.New(os.Stdout, cmd.Name())
defer rpt.Flush()
fmt.Fprint(rpt.Writer(), "Images space usage:\n\n")
// convert to dfImage for output
dfImages := make([]*dfImage, 0, len(reports.Images))
for _, d := range reports.Images {
dfImages = append(dfImages, &dfImage{SystemDfImageReport: d})
}
hdrs := report.Headers(entities.SystemDfImageReport{}, map[string]string{
"ImageID": "IMAGE ID",
"SharedSize": "SHARED SIZE",
"UniqueSize": "UNIQUE SIZE",
})
imageRow := "{{range .}}{{.Repository}}\t{{.Tag}}\t{{.ImageID}}\t{{.Created}}\t{{.Size}}\t{{.SharedSize}}\t{{.UniqueSize}}\t{{.Containers}}\n{{end -}}"
rpt, err := rpt.Parse(report.OriginPodman, imageRow)
if err != nil {
return err
}
if err := writeTemplate(rpt, hdrs, dfImages); err != nil {
return err
}
fmt.Fprint(rpt.Writer(), "\nContainers space usage:\n\n")
// convert to dfContainers for output
dfContainers := make([]*dfContainer, 0, len(reports.Containers))
for _, d := range reports.Containers {
dfContainers = append(dfContainers, &dfContainer{SystemDfContainerReport: d})
}
hdrs = report.Headers(entities.SystemDfContainerReport{}, map[string]string{
"ContainerID": "CONTAINER ID",
"LocalVolumes": "LOCAL VOLUMES",
"RWSize": "SIZE",
})
containerRow := "{{range .}}{{.ContainerID}}\t{{.Image}}\t{{.Command}}\t{{.LocalVolumes}}\t{{.RWSize}}\t{{.Created}}\t{{.Status}}\t{{.Names}}\n{{end -}}"
rpt, err = rpt.Parse(report.OriginPodman, containerRow)
if err != nil {
return err
}
if err := writeTemplate(rpt, hdrs, dfContainers); err != nil {
return err
}
fmt.Fprint(rpt.Writer(), "\nLocal Volumes space usage:\n\n")
dfVolumes := make([]*dfVolume, 0, len(reports.Volumes))
// convert to dfVolume for output
for _, d := range reports.Volumes {
dfVolumes = append(dfVolumes, &dfVolume{SystemDfVolumeReport: d})
}
hdrs = report.Headers(entities.SystemDfVolumeReport{}, map[string]string{
"VolumeName": "VOLUME NAME",
})
volumeRow := "{{range .}}{{.VolumeName}}\t{{.Links}}\t{{.Size}}\n{{end -}}"
rpt, err = rpt.Parse(report.OriginPodman, volumeRow)
if err != nil {
return err
}
return writeTemplate(rpt, hdrs, dfVolumes)
}
func writeTemplate(rpt *report.Formatter, hdrs []map[string]string, output interface{}) error {
if rpt.RenderHeaders {
if err := rpt.Execute(hdrs); err != nil {
return err
}
}
return rpt.Execute(output)
}
type dfImage struct {
*entities.SystemDfImageReport
}
func (d *dfImage) ImageID() string {
return d.SystemDfImageReport.ImageID[0:12]
}
func (d *dfImage) Created() string {
return units.HumanDuration(time.Since(d.SystemDfImageReport.Created))
}
func (d *dfImage) Size() string {
return units.HumanSize(float64(d.SystemDfImageReport.Size))
}
func (d *dfImage) SharedSize() string {
return units.HumanSize(float64(d.SystemDfImageReport.SharedSize))
}
func (d *dfImage) UniqueSize() string {
return units.HumanSize(float64(d.SystemDfImageReport.UniqueSize))
}
type dfContainer struct {
*entities.SystemDfContainerReport
}
func (d *dfContainer) ContainerID() string {
return d.SystemDfContainerReport.ContainerID[0:12]
}
func (d *dfContainer) Image() string {
return d.SystemDfContainerReport.Image[0:12]
}
func (d *dfContainer) Command() string {
return strings.Join(d.SystemDfContainerReport.Command, " ")
}
func (d *dfContainer) RWSize() string {
return units.HumanSize(float64(d.SystemDfContainerReport.RWSize))
}
func (d *dfContainer) Created() string {
return units.HumanDuration(time.Since(d.SystemDfContainerReport.Created))
}
type dfVolume struct {
*entities.SystemDfVolumeReport
}
func (d *dfVolume) Size() string {
return units.HumanSize(float64(d.SystemDfVolumeReport.Size))
}
type dfSummary struct {
Type string
Total int
Active int
RawSize int64 `json:"Size"`
RawReclaimable int64 `json:"Reclaimable"`
}
func (d *dfSummary) Size() string {
return units.HumanSize(float64(d.RawSize))
}
func (d *dfSummary) Reclaimable() string {
percent := 0
// make sure to check this to prevent div by zero problems
if d.RawSize > 0 {
percent = int(math.Round(float64(d.RawReclaimable) / float64(d.RawSize) * float64(100)))
}
return fmt.Sprintf("%s (%d%%)", units.HumanSize(float64(d.RawReclaimable)), percent)
}
|
