DockerCLI/cli/command/builder/prune.go

97 lines
2.8 KiB
Go

package builder
import (
"context"
"fmt"
"strings"
"github.com/docker/cli/cli"
"github.com/docker/cli/cli/command"
"github.com/docker/cli/opts"
"github.com/docker/docker/api/types"
units "github.com/docker/go-units"
"github.com/spf13/cobra"
)
type pruneOptions struct {
force bool
all bool
filter opts.FilterOpt
keepStorage opts.MemBytes
}
// NewPruneCommand returns a new cobra prune command for images
func NewPruneCommand(dockerCli command.Cli) *cobra.Command {
options := pruneOptions{filter: opts.NewFilterOpt()}
cmd := &cobra.Command{
Use: "prune",
Short: "Remove build cache",
Args: cli.NoArgs,
RunE: func(cmd *cobra.Command, args []string) error {
spaceReclaimed, output, err := runPrune(dockerCli, options)
if err != nil {
return err
}
if output != "" {
fmt.Fprintln(dockerCli.Out(), output)
}
fmt.Fprintln(dockerCli.Out(), "Total reclaimed space:", units.HumanSize(float64(spaceReclaimed)))
return nil
},
Annotations: map[string]string{"version": "1.39"},
}
flags := cmd.Flags()
flags.BoolVarP(&options.force, "force", "f", false, "Do not prompt for confirmation")
flags.BoolVarP(&options.all, "all", "a", false, "Remove all unused images, not just dangling ones")
flags.Var(&options.filter, "filter", "Provide filter values (e.g. 'unused-for=24h')")
flags.Var(&options.keepStorage, "keep-storage", "Amount of disk space to keep for cache")
return cmd
}
const (
normalWarning = `WARNING! This will remove all dangling build cache. Are you sure you want to continue?`
allCacheWarning = `WARNING! This will remove all build cache. Are you sure you want to continue?`
)
func runPrune(dockerCli command.Cli, options pruneOptions) (spaceReclaimed uint64, output string, err error) {
pruneFilters := options.filter.Value()
pruneFilters = command.PruneFilters(dockerCli, pruneFilters)
warning := normalWarning
if options.all {
warning = allCacheWarning
}
if !options.force && !command.PromptForConfirmation(dockerCli.In(), dockerCli.Out(), warning) {
return 0, "", nil
}
report, err := dockerCli.Client().BuildCachePrune(context.Background(), types.BuildCachePruneOptions{
All: options.all,
KeepStorage: options.keepStorage.Value(),
Filters: pruneFilters,
})
if err != nil {
return 0, "", err
}
if len(report.CachesDeleted) > 0 {
var sb strings.Builder
sb.WriteString("Deleted build cache objects:\n")
for _, id := range report.CachesDeleted {
sb.WriteString(id)
sb.WriteByte('\n')
}
output = sb.String()
}
return report.SpaceReclaimed, output, nil
}
// CachePrune executes a prune command for build cache
func CachePrune(dockerCli command.Cli, all bool, filter opts.FilterOpt) (uint64, string, error) {
return runPrune(dockerCli, pruneOptions{force: true, all: all, filter: filter})
}