102 lines
2.5 KiB
Go
102 lines
2.5 KiB
Go
/*
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Copyright The containerd Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package tasks
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import (
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"fmt"
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"runtime"
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"github.com/containerd/containerd"
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"github.com/containerd/containerd/cmd/ctr/commands"
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"github.com/containerd/containerd/runtime/linux/runctypes"
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"github.com/containerd/containerd/runtime/v2/runc/options"
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"github.com/pkg/errors"
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"github.com/urfave/cli"
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)
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var checkpointCommand = cli.Command{
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Name: "checkpoint",
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Usage: "checkpoint a container",
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ArgsUsage: "[flags] CONTAINER",
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Flags: []cli.Flag{
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cli.BoolFlag{
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Name: "exit",
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Usage: "stop the container after the checkpoint",
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},
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cli.StringFlag{
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Name: "runtime",
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Usage: "runtime name",
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Value: fmt.Sprintf("io.containerd.runtime.v1.%s", runtime.GOOS),
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},
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},
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Action: func(context *cli.Context) error {
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id := context.Args().First()
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if id == "" {
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return errors.New("container id must be provided")
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}
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client, ctx, cancel, err := commands.NewClient(context, containerd.WithDefaultRuntime(context.String("runtime")))
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if err != nil {
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return err
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}
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defer cancel()
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container, err := client.LoadContainer(ctx, id)
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if err != nil {
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return err
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}
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task, err := container.Task(ctx, nil)
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if err != nil {
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return err
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}
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var opts []containerd.CheckpointTaskOpts
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if context.Bool("exit") {
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opts = append(opts, withExit(context.String("runtime")))
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}
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checkpoint, err := task.Checkpoint(ctx, opts...)
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if err != nil {
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return err
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}
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fmt.Println(checkpoint.Name())
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return nil
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},
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}
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func withExit(rt string) containerd.CheckpointTaskOpts {
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return func(r *containerd.CheckpointTaskInfo) error {
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switch rt {
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case "io.containerd.runc.v1":
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if r.Options == nil {
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r.Options = &options.CheckpointOptions{
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Exit: true,
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}
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} else {
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opts, _ := r.Options.(*options.CheckpointOptions)
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opts.Exit = true
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}
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default:
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if r.Options == nil {
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r.Options = &runctypes.CheckpointOptions{
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Exit: true,
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}
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} else {
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opts, _ := r.Options.(*runctypes.CheckpointOptions)
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opts.Exit = true
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}
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}
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return nil
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}
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}
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