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