2019-04-29 21:25:05 +00:00
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// Copyright 2018 The gVisor Authors.
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2018-04-27 17:37:02 +00:00
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package cmd
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import (
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2018-11-28 22:00:54 +00:00
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"context"
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"fmt"
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"os"
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"flag"
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"github.com/google/subcommands"
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"gvisor.googlesource.com/gvisor/pkg/log"
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"gvisor.googlesource.com/gvisor/runsc/boot"
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"gvisor.googlesource.com/gvisor/runsc/container"
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)
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// Delete implements subcommands.Command for the "delete" command.
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type Delete struct {
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// force indicates that the container should be terminated if running.
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force bool
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}
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// Name implements subcommands.Command.Name.
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func (*Delete) Name() string {
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return "delete"
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}
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// Synopsis implements subcommands.Command.Synopsis.
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func (*Delete) Synopsis() string {
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return "delete resources held by a container"
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}
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// Usage implements subcommands.Command.Usage.
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func (*Delete) Usage() string {
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return `delete [flags] <container ids>`
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}
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// SetFlags implements subcommands.Command.SetFlags.
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func (d *Delete) SetFlags(f *flag.FlagSet) {
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f.BoolVar(&d.force, "force", false, "terminate container if running")
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}
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// Execute implements subcommands.Command.Execute.
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func (d *Delete) Execute(_ context.Context, f *flag.FlagSet, args ...interface{}) subcommands.ExitStatus {
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if f.NArg() == 0 {
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f.Usage()
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return subcommands.ExitUsageError
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}
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conf := args[0].(*boot.Config)
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if err := d.execute(f.Args(), conf); err != nil {
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Fatalf("%v", err)
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}
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return subcommands.ExitSuccess
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}
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func (d *Delete) execute(ids []string, conf *boot.Config) error {
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for _, id := range ids {
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c, err := container.Load(conf.RootDir, id)
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if err != nil {
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if os.IsNotExist(err) && d.force {
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log.Warningf("couldn't find container %q: %v", id, err)
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return nil
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}
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return fmt.Errorf("loading container %q: %v", id, err)
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}
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if !d.force && c.Status != container.Created && c.Status != container.Stopped {
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return fmt.Errorf("cannot delete container that is not stopped without --force flag")
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}
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if err := c.Destroy(); err != nil {
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return fmt.Errorf("destroying container: %v", err)
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}
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}
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return nil
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}
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