124 lines
3.1 KiB
Go
124 lines
3.1 KiB
Go
/*
|
|
Copyright The containerd 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 tasks
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
|
|
"github.com/containerd/containerd"
|
|
"github.com/containerd/containerd/cmd/ctr/commands"
|
|
"github.com/containerd/containerd/plugin"
|
|
"github.com/containerd/containerd/runtime/linux/runctypes"
|
|
"github.com/containerd/containerd/runtime/v2/runc/options"
|
|
"github.com/urfave/cli"
|
|
)
|
|
|
|
var checkpointCommand = cli.Command{
|
|
Name: "checkpoint",
|
|
Usage: "checkpoint a container",
|
|
ArgsUsage: "[flags] CONTAINER",
|
|
Flags: []cli.Flag{
|
|
cli.BoolFlag{
|
|
Name: "exit",
|
|
Usage: "Stop the container after the checkpoint",
|
|
},
|
|
cli.StringFlag{
|
|
Name: "image-path",
|
|
Usage: "Path to criu image files",
|
|
},
|
|
cli.StringFlag{
|
|
Name: "work-path",
|
|
Usage: "Path to criu work files and logs",
|
|
},
|
|
},
|
|
Action: func(context *cli.Context) error {
|
|
id := context.Args().First()
|
|
if id == "" {
|
|
return errors.New("container id must be provided")
|
|
}
|
|
client, ctx, cancel, err := commands.NewClient(context, containerd.WithDefaultRuntime(context.String("runtime")))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer cancel()
|
|
container, err := client.LoadContainer(ctx, id)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
task, err := container.Task(ctx, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
info, err := container.Info(ctx)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
opts := []containerd.CheckpointTaskOpts{withCheckpointOpts(info.Runtime.Name, context)}
|
|
checkpoint, err := task.Checkpoint(ctx, opts...)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if context.String("image-path") == "" {
|
|
fmt.Println(checkpoint.Name())
|
|
}
|
|
return nil
|
|
},
|
|
}
|
|
|
|
// withCheckpointOpts only suitable for runc runtime now
|
|
func withCheckpointOpts(rt string, context *cli.Context) containerd.CheckpointTaskOpts {
|
|
return func(r *containerd.CheckpointTaskInfo) error {
|
|
imagePath := context.String("image-path")
|
|
workPath := context.String("work-path")
|
|
|
|
switch rt {
|
|
case plugin.RuntimeRuncV1, plugin.RuntimeRuncV2:
|
|
if r.Options == nil {
|
|
r.Options = &options.CheckpointOptions{}
|
|
}
|
|
opts, _ := r.Options.(*options.CheckpointOptions)
|
|
|
|
if context.Bool("exit") {
|
|
opts.Exit = true
|
|
}
|
|
if imagePath != "" {
|
|
opts.ImagePath = imagePath
|
|
}
|
|
if workPath != "" {
|
|
opts.WorkPath = workPath
|
|
}
|
|
case plugin.RuntimeLinuxV1:
|
|
if r.Options == nil {
|
|
r.Options = &runctypes.CheckpointOptions{}
|
|
}
|
|
opts, _ := r.Options.(*runctypes.CheckpointOptions)
|
|
|
|
if context.Bool("exit") {
|
|
opts.Exit = true
|
|
}
|
|
if imagePath != "" {
|
|
opts.ImagePath = imagePath
|
|
}
|
|
if workPath != "" {
|
|
opts.WorkPath = workPath
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
}
|