|
| 1 | +/* |
| 2 | + Copyright The containerd Authors. |
| 3 | +
|
| 4 | + Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | + you may not use this file except in compliance with the License. |
| 6 | + You may obtain a copy of the License at |
| 7 | +
|
| 8 | + http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | +
|
| 10 | + Unless required by applicable law or agreed to in writing, software |
| 11 | + distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | + See the License for the specific language governing permissions and |
| 14 | + limitations under the License. |
| 15 | +*/ |
| 16 | + |
| 17 | +package images |
| 18 | + |
| 19 | +import ( |
| 20 | + "fmt" |
| 21 | + |
| 22 | + "github.com/containerd/containerd/cmd/ctr/commands" |
| 23 | + "github.com/containerd/containerd/errdefs" |
| 24 | + "github.com/urfave/cli" |
| 25 | +) |
| 26 | + |
| 27 | +var tagCommand = cli.Command{ |
| 28 | + Name: "tag", |
| 29 | + Usage: "tag an image", |
| 30 | + ArgsUsage: "[flags] <source_ref> <target_ref> [<target_ref>, ...]", |
| 31 | + Description: `Tag an image for use in containerd.`, |
| 32 | + Flags: []cli.Flag{ |
| 33 | + cli.BoolFlag{ |
| 34 | + Name: "force", |
| 35 | + Usage: "force target_ref to be created, regardless if it already exists", |
| 36 | + }, |
| 37 | + }, |
| 38 | + Action: func(context *cli.Context) error { |
| 39 | + var ( |
| 40 | + ref = context.Args().First() |
| 41 | + ) |
| 42 | + if ref == "" { |
| 43 | + return fmt.Errorf("please provide an image reference to tag from") |
| 44 | + } |
| 45 | + if context.NArg() <= 1 { |
| 46 | + return fmt.Errorf("please provide an image reference to tag to") |
| 47 | + } |
| 48 | + |
| 49 | + client, ctx, cancel, err := commands.NewClient(context) |
| 50 | + if err != nil { |
| 51 | + return err |
| 52 | + } |
| 53 | + defer cancel() |
| 54 | + |
| 55 | + ctx, done, err := client.WithLease(ctx) |
| 56 | + if err != nil { |
| 57 | + return err |
| 58 | + } |
| 59 | + defer done(ctx) |
| 60 | + |
| 61 | + imageService := client.ImageService() |
| 62 | + image, err := imageService.Get(ctx, ref) |
| 63 | + if err != nil { |
| 64 | + return err |
| 65 | + } |
| 66 | + // Support multiple references for one command run |
| 67 | + for _, targetRef := range context.Args()[1:] { |
| 68 | + image.Name = targetRef |
| 69 | + // Attempt to create the image first |
| 70 | + if _, err = imageService.Create(ctx, image); err != nil { |
| 71 | + // If user has specified force and the image already exists then |
| 72 | + // delete the original image and attempt to create the new one |
| 73 | + if errdefs.IsAlreadyExists(err) && context.Bool("force") { |
| 74 | + if err = imageService.Delete(ctx, targetRef); err != nil { |
| 75 | + return err |
| 76 | + } |
| 77 | + if _, err = imageService.Create(ctx, image); err != nil { |
| 78 | + return err |
| 79 | + } |
| 80 | + } else { |
| 81 | + return err |
| 82 | + } |
| 83 | + } |
| 84 | + fmt.Println(targetRef) |
| 85 | + } |
| 86 | + return nil |
| 87 | + }, |
| 88 | +} |
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