3b6a556533
These are no longer used, and unlikely to be used externally. Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
105 lines
2.8 KiB
Go
105 lines
2.8 KiB
Go
package network
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import (
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"context"
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"errors"
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"fmt"
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"github.com/docker/cli/cli"
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"github.com/docker/cli/cli/command"
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"github.com/docker/cli/cli/command/system/pruner"
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"github.com/docker/cli/internal/prompt"
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"github.com/docker/cli/opts"
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"github.com/spf13/cobra"
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)
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func init() {
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// Register the prune command to run as part of "docker system prune"
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if err := pruner.Register(pruner.TypeNetwork, pruneFn); err != nil {
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panic(err)
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}
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}
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type pruneOptions struct {
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force bool
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filter opts.FilterOpt
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}
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// NewPruneCommand returns a new cobra prune command for networks
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func NewPruneCommand(dockerCli command.Cli) *cobra.Command {
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options := pruneOptions{filter: opts.NewFilterOpt()}
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cmd := &cobra.Command{
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Use: "prune [OPTIONS]",
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Short: "Remove all unused networks",
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Args: cli.NoArgs,
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RunE: func(cmd *cobra.Command, args []string) error {
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output, err := runPrune(cmd.Context(), dockerCli, options)
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if err != nil {
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return err
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}
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if output != "" {
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_, _ = fmt.Fprintln(dockerCli.Out(), output)
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}
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return nil
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},
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Annotations: map[string]string{"version": "1.25"},
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}
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flags := cmd.Flags()
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flags.BoolVarP(&options.force, "force", "f", false, "Do not prompt for confirmation")
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flags.Var(&options.filter, "filter", `Provide filter values (e.g. "until=<timestamp>")`)
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return cmd
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}
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const warning = `WARNING! This will remove all custom networks not used by at least one container.
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Are you sure you want to continue?`
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func runPrune(ctx context.Context, dockerCli command.Cli, options pruneOptions) (output string, err error) {
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pruneFilters := command.PruneFilters(dockerCli, options.filter.Value())
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if !options.force {
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r, err := prompt.Confirm(ctx, dockerCli.In(), dockerCli.Out(), warning)
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if err != nil {
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return "", err
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}
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if !r {
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return "", cancelledErr{errors.New("network prune has been cancelled")}
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}
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}
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report, err := dockerCli.Client().NetworksPrune(ctx, pruneFilters)
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if err != nil {
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return "", err
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}
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if len(report.NetworksDeleted) > 0 {
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output = "Deleted Networks:\n"
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for _, id := range report.NetworksDeleted {
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output += id + "\n"
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}
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}
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return output, nil
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}
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type cancelledErr struct{ error }
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func (cancelledErr) Cancelled() {}
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// pruneFn calls the Network Prune API for use in "docker system prune"
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// and returns the amount of space reclaimed and a detailed output string.
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func pruneFn(ctx context.Context, dockerCLI command.Cli, options pruner.PruneOptions) (uint64, string, error) {
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if !options.Confirmed {
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// Dry-run: perform validation and produce confirmation before pruning.
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confirmMsg := "all networks not used by at least one container"
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return 0, confirmMsg, cancelledErr{errors.New("network prune has been cancelled")}
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}
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output, err := runPrune(ctx, dockerCLI, pruneOptions{
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force: true,
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filter: options.Filter,
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})
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return 0, output, err
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}
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