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// Copyright 2018 Google LLC All Rights Reserved.
//
// 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 cmd
import (
"fmt"
"github.com/google/go-containerregistry/pkg/crane"
v1 "github.com/google/go-containerregistry/pkg/v1"
"github.com/google/go-containerregistry/pkg/v1/tarball"
"github.com/google/go-containerregistry/pkg/v1/validate"
"github.com/spf13/cobra"
)
// NewCmdValidate creates a new cobra.Command for the validate subcommand.
func NewCmdValidate(options *[]crane.Option) *cobra.Command {
var (
tarballPath, remoteRef string
fast bool
)
validateCmd := &cobra.Command{
Use: "validate",
Short: "Validate that an image is well-formed",
Args: cobra.ExactArgs(0),
RunE: func(_ *cobra.Command, args []string) error {
for flag, maker := range map[string]func(string, ...crane.Option) (v1.Image, error){
tarballPath: makeTarball,
remoteRef: crane.Pull,
} {
if flag == "" {
continue
}
img, err := maker(flag, *options...)
if err != nil {
return fmt.Errorf("failed to read image %s: %w", flag, err)
}
opt := []validate.Option{}
if fast {
opt = append(opt, validate.Fast)
}
if err := validate.Image(img, opt...); err != nil {
fmt.Printf("FAIL: %s: %v\n", flag, err)
return err
}
fmt.Printf("PASS: %s\n", flag)
}
return nil
},
}
validateCmd.Flags().StringVar(&tarballPath, "tarball", "", "Path to tarball to validate")
validateCmd.Flags().StringVar(&remoteRef, "remote", "", "Name of remote image to validate")
validateCmd.Flags().BoolVar(&fast, "fast", false, "Skip downloading/digesting layers")
return validateCmd
}
func makeTarball(path string, _ ...crane.Option) (v1.Image, error) {
return tarball.ImageFromPath(path, nil)
}
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