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Signed-off-by: weipeng <[email protected]>
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Dec 13, 2024
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/* | ||
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. | ||
*/ | ||
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package image | ||
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import ( | ||
"fmt" | ||
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"github.com/spf13/cobra" | ||
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"github.com/containerd/nerdctl/v2/cmd/nerdctl/helpers" | ||
"github.com/containerd/nerdctl/v2/pkg/api/types" | ||
"github.com/containerd/nerdctl/v2/pkg/clientutil" | ||
"github.com/containerd/nerdctl/v2/pkg/cmd/image" | ||
) | ||
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func addSquashFlags(cmd *cobra.Command) { | ||
cmd.Flags().IntP("layer-count", "c", 0, "The number of layers that can be compressed") | ||
cmd.Flags().StringP("layer-digest", "d", "", "The digest of the layer to be compressed") | ||
cmd.Flags().StringP("author", "a", "", `Author (e.g., "nerdctl contributor <[email protected]>")`) | ||
cmd.Flags().StringP("message", "m", "", "Commit message") | ||
} | ||
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func NewSquashCommand() *cobra.Command { | ||
var squashCommand = &cobra.Command{ | ||
Use: "squash [flags] SOURCE_IMAGE TAG_IMAGE", | ||
Short: "Compress the number of layers of the image", | ||
Args: helpers.IsExactArgs(2), | ||
RunE: squashAction, | ||
SilenceUsage: true, | ||
SilenceErrors: true, | ||
} | ||
addSquashFlags(squashCommand) | ||
return squashCommand | ||
} | ||
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func processSquashCommandFlags(cmd *cobra.Command, args []string) (options types.ImageSquashOptions, err error) { | ||
globalOptions, err := helpers.ProcessRootCmdFlags(cmd) | ||
if err != nil { | ||
return options, err | ||
} | ||
layerCount, err := cmd.Flags().GetInt("layer-count") | ||
if err != nil { | ||
return options, err | ||
} | ||
layerDigest, err := cmd.Flags().GetString("layer-digest") | ||
if err != nil { | ||
return options, err | ||
} | ||
author, err := cmd.Flags().GetString("author") | ||
if err != nil { | ||
return options, err | ||
} | ||
message, err := cmd.Flags().GetString("message") | ||
if err != nil { | ||
return options, err | ||
} | ||
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options = types.ImageSquashOptions{ | ||
GOptions: globalOptions, | ||
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Author: author, | ||
Message: message, | ||
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SourceImageRef: args[0], | ||
TargetImageName: args[1], | ||
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SquashLayerCount: layerCount, | ||
SquashLayerDigest: layerDigest, | ||
} | ||
return options, nil | ||
} | ||
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func squashAction(cmd *cobra.Command, args []string) error { | ||
options, err := processSquashCommandFlags(cmd, args) | ||
if err != nil { | ||
return err | ||
} | ||
if !options.GOptions.Experimental { | ||
return fmt.Errorf("squash is an experimental feature, please enable experimental mode") | ||
} | ||
client, ctx, cancel, err := clientutil.NewClient(cmd.Context(), options.GOptions.Namespace, options.GOptions.Address) | ||
if err != nil { | ||
return err | ||
} | ||
defer cancel() | ||
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return image.Squash(ctx, client, options) | ||
} |
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Original file line number | Diff line number | Diff line change |
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@@ -287,3 +287,23 @@ type SociOptions struct { | |
// Minimum layer size to build zTOC for. Smaller layers won't have zTOC and not lazy pulled. Default is 10 MiB. | ||
MinLayerSize int64 | ||
} | ||
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// ImageSquashOptions specifies options for `nerdctl image squash`. | ||
type ImageSquashOptions struct { | ||
// GOptions is the global options | ||
GOptions GlobalCommandOptions | ||
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// Author (e.g., "nerdctl contributor <[email protected]>") | ||
Author string | ||
// Commit message | ||
Message string | ||
// SourceImageRef is the image to be squashed | ||
SourceImageRef string | ||
// TargetImageName is the name of the squashed image | ||
TargetImageName string | ||
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// SquashLayerCount is the number of layers to squash | ||
SquashLayerCount int | ||
// SquashLayerDigest is the digest of the layer to squash | ||
SquashLayerDigest string | ||
} |
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