96 lines
2.7 KiB
Go
96 lines
2.7 KiB
Go
package image
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"golang.org/x/net/context"
|
|
|
|
"github.com/docker/cli/cli"
|
|
"github.com/docker/cli/cli/command"
|
|
"github.com/docker/cli/opts"
|
|
units "github.com/docker/go-units"
|
|
"github.com/spf13/cobra"
|
|
)
|
|
|
|
type pruneOptions struct {
|
|
force bool
|
|
all bool
|
|
filter opts.FilterOpt
|
|
}
|
|
|
|
// 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 [OPTIONS]",
|
|
Short: "Remove unused images",
|
|
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
|
|
},
|
|
Tags: map[string]string{"version": "1.25"},
|
|
}
|
|
|
|
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. 'until=<timestamp>')")
|
|
|
|
return cmd
|
|
}
|
|
|
|
const (
|
|
allImageWarning = `WARNING! This will remove all images without at least one container associated to them.
|
|
Are you sure you want to continue?`
|
|
danglingWarning = `WARNING! This will remove all dangling images.
|
|
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.Add("dangling", fmt.Sprintf("%v", !options.all))
|
|
pruneFilters = command.PruneFilters(dockerCli, pruneFilters)
|
|
|
|
warning := danglingWarning
|
|
if options.all {
|
|
warning = allImageWarning
|
|
}
|
|
if !options.force && !command.PromptForConfirmation(dockerCli.In(), dockerCli.Out(), warning) {
|
|
return 0, "", nil
|
|
}
|
|
|
|
report, err := dockerCli.Client().ImagesPrune(context.Background(), pruneFilters)
|
|
if err != nil {
|
|
return 0, "", err
|
|
}
|
|
|
|
if len(report.ImagesDeleted) > 0 {
|
|
output = "Deleted Images:\n"
|
|
for _, st := range report.ImagesDeleted {
|
|
if st.Untagged != "" {
|
|
output += fmt.Sprintln("untagged:", st.Untagged)
|
|
} else {
|
|
output += fmt.Sprintln("deleted:", st.Deleted)
|
|
}
|
|
}
|
|
spaceReclaimed = report.SpaceReclaimed
|
|
}
|
|
|
|
return spaceReclaimed, output, nil
|
|
}
|
|
|
|
// RunPrune calls the Image Prune API
|
|
// This returns the amount of space reclaimed and a detailed output string
|
|
func RunPrune(dockerCli command.Cli, all bool, filter opts.FilterOpt) (uint64, string, error) {
|
|
return runPrune(dockerCli, pruneOptions{force: true, all: all, filter: filter})
|
|
}
|