bbe46b8c43
Signed-off-by: haoyun <yun.hao@daocloud.io> Co-authored-by: zounengren <zouyee1989@gmail.com>
98 lines
2.4 KiB
Go
98 lines
2.4 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 containers
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import (
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"errors"
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"github.com/containerd/containerd"
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"github.com/containerd/containerd/cio"
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"github.com/containerd/containerd/cmd/ctr/commands"
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"github.com/containerd/containerd/errdefs"
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"github.com/urfave/cli"
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)
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var restoreCommand = cli.Command{
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Name: "restore",
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Usage: "restore a container from checkpoint",
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ArgsUsage: "CONTAINER REF",
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Flags: []cli.Flag{
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cli.BoolFlag{
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Name: "rw",
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Usage: "restore the rw layer from the checkpoint",
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},
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cli.BoolFlag{
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Name: "live",
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Usage: "restore the runtime and memory data from the checkpoint",
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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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ref := context.Args().Get(1)
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if ref == "" {
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return errors.New("ref must be provided")
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}
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client, ctx, cancel, err := commands.NewClient(context)
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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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checkpoint, err := client.GetImage(ctx, ref)
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if err != nil {
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if !errdefs.IsNotFound(err) {
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return err
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}
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// TODO (ehazlett): consider other options (always/never fetch)
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ck, err := client.Fetch(ctx, ref)
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if err != nil {
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return err
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}
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checkpoint = containerd.NewImage(client, ck)
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}
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opts := []containerd.RestoreOpts{
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containerd.WithRestoreImage,
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containerd.WithRestoreSpec,
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containerd.WithRestoreRuntime,
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}
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if context.Bool("rw") {
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opts = append(opts, containerd.WithRestoreRW)
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}
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ctr, err := client.Restore(ctx, id, checkpoint, opts...)
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if err != nil {
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return err
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}
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topts := []containerd.NewTaskOpts{}
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if context.Bool("live") {
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topts = append(topts, containerd.WithTaskCheckpoint(checkpoint))
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}
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task, err := ctr.NewTask(ctx, cio.NewCreator(cio.WithStdio), topts...)
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if err != nil {
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return err
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}
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return task.Start(ctx)
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},
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}
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