/
utils.go
183 lines (165 loc) · 4.57 KB
/
utils.go
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package pkglib
import (
"context"
"fmt"
"io"
"os"
"strings"
"text/tabwriter"
"time"
"github.com/containerd/containerd/platforms"
"github.com/docker/go-units"
buildkitClient "github.com/moby/buildkit/client"
)
func printTableHeader(tw *tabwriter.Writer) {
fmt.Fprintln(tw, "ID\tRECLAIMABLE\tSIZE\tLAST ACCESSED")
}
func printTableRow(tw *tabwriter.Writer, di *buildkitClient.UsageInfo) {
id := di.ID
if di.Mutable {
id += "*"
}
size := units.HumanSize(float64(di.Size))
if di.Shared {
size += "*"
}
lastAccessed := ""
if di.LastUsedAt != nil {
lastAccessed = units.HumanDuration(time.Since(*di.LastUsedAt)) + " ago"
}
fmt.Fprintf(tw, "%-40s\t%-5v\t%-10s\t%s\n", id, !di.InUse, size, lastAccessed)
}
func printSummary(tw *tabwriter.Writer, du []*buildkitClient.UsageInfo) {
total := int64(0)
reclaimable := int64(0)
shared := int64(0)
for _, di := range du {
if di.Size > 0 {
total += di.Size
if !di.InUse {
reclaimable += di.Size
}
}
if di.Shared {
shared += di.Size
}
}
if shared > 0 {
fmt.Fprintf(tw, "Shared:\t%s\n", units.HumanSize(float64(shared)))
fmt.Fprintf(tw, "Private:\t%s\n", units.HumanSize(float64(total-shared)))
}
fmt.Fprintf(tw, "Reclaimable:\t%s\n", units.HumanSize(float64(reclaimable)))
fmt.Fprintf(tw, "Total:\t%s\n", units.HumanSize(float64(total)))
tw.Flush()
}
func printKV(w io.Writer, k string, v interface{}) {
fmt.Fprintf(w, "%s:\t%v\n", k, v)
}
func printVerbose(tw *tabwriter.Writer, du []*buildkitClient.UsageInfo) {
for _, di := range du {
printKV(tw, "ID", di.ID)
if len(di.Parents) != 0 {
printKV(tw, "Parent", strings.Join(di.Parents, ","))
}
printKV(tw, "Created at", di.CreatedAt)
printKV(tw, "Mutable", di.Mutable)
printKV(tw, "Reclaimable", !di.InUse)
printKV(tw, "Shared", di.Shared)
printKV(tw, "Size", units.HumanSize(float64(di.Size)))
if di.Description != "" {
printKV(tw, "Description", di.Description)
}
printKV(tw, "Usage count", di.UsageCount)
if di.LastUsedAt != nil {
printKV(tw, "Last used", units.HumanDuration(time.Since(*di.LastUsedAt))+" ago")
}
if di.RecordType != "" {
printKV(tw, "Type", di.RecordType)
}
fmt.Fprintf(tw, "\n")
}
tw.Flush()
}
func getClientForPlatform(ctx context.Context, buildersMap map[string]string, builderImage, platform string) (*buildkitClient.Client, error) {
p, err := platforms.Parse(platform)
if err != nil {
return nil, fmt.Errorf("failed to parse platform: %s", err)
}
dr := newDockerRunner(false)
builderName := getBuilderForPlatform(p.Architecture, buildersMap)
client, err := dr.builder(ctx, builderName, builderImage, platform, false)
if err != nil {
return nil, fmt.Errorf("unable to ensure builder container: %v", err)
}
return client, nil
}
// DiskUsage of builder
func DiskUsage(buildersMap map[string]string, builderImage string, platformsToClean []string, verbose bool) error {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
for _, platform := range platformsToClean {
client, err := getClientForPlatform(ctx, buildersMap, builderImage, platform)
if err != nil {
return fmt.Errorf("cannot get client: %s", err)
}
du, err := client.DiskUsage(ctx)
if err != nil {
_ = client.Close()
return err
}
err = client.Close()
if err != nil {
return fmt.Errorf("cannot close client: %s", err)
}
tw := tabwriter.NewWriter(os.Stdout, 1, 8, 1, '\t', 0)
if len(du) > 0 {
if verbose {
printVerbose(tw, du)
} else {
printTableHeader(tw)
for _, di := range du {
printTableRow(tw, di)
}
}
}
printSummary(tw, du)
}
return nil
}
// PruneBuilder clean build cache of builder
func PruneBuilder(buildersMap map[string]string, builderImage string, platformsToClean []string, verbose bool) error {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
total := int64(0)
for _, platform := range platformsToClean {
client, err := getClientForPlatform(ctx, buildersMap, builderImage, platform)
if err != nil {
return fmt.Errorf("cannot get client: %s", err)
}
ch := make(chan buildkitClient.UsageInfo)
processed := make(chan struct{})
go func() {
defer close(processed)
for du := range ch {
if verbose {
fmt.Printf("%s\t%s\tremoved\n", du.ID, units.HumanSize(float64(du.Size)))
}
total += du.Size
}
}()
err = client.Prune(ctx, ch)
if err != nil {
_ = client.Close()
close(ch)
return err
}
err = client.Close()
if err != nil {
return fmt.Errorf("cannot close client: %s", err)
}
close(ch)
<-processed
}
fmt.Printf("Reclaimed:\t%s\n", units.BytesSize(float64(total)))
return nil
}