kro cli package command #617
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| // Copyright 2025 The Kube Resource Orchestrator 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 commands | ||
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| import ( | ||
| "fmt" | ||
| "os" | ||
| "time" | ||
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| "github.com/google/go-containerregistry/pkg/name" | ||
| v1 "github.com/google/go-containerregistry/pkg/v1" | ||
| "github.com/google/go-containerregistry/pkg/v1/empty" | ||
| "github.com/google/go-containerregistry/pkg/v1/mutate" | ||
| "github.com/google/go-containerregistry/pkg/v1/static" | ||
| "github.com/google/go-containerregistry/pkg/v1/tarball" | ||
| "github.com/google/go-containerregistry/pkg/v1/types" | ||
| "github.com/spf13/cobra" | ||
| "sigs.k8s.io/yaml" | ||
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| "github.com/kro-run/kro/api/v1alpha1" | ||
| ) | ||
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| type PackageConfig struct { | ||
| resourceGraphDefinitionFile string | ||
| outputFile string | ||
| } | ||
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| var packageConfig = &PackageConfig{} | ||
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| func init() { | ||
| packageRGDCmd.PersistentFlags().StringVarP(&packageConfig.resourceGraphDefinitionFile, "file", "f", "", | ||
| "Path to the ResourceGraphDefinition file") | ||
| packageRGDCmd.PersistentFlags().StringVarP(&packageConfig.outputFile, "output", "o", "", | ||
| "Output file name for the OCI image tarball") | ||
| } | ||
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| var packageRGDCmd = &cobra.Command{ | ||
| Use: "package", | ||
| Short: "Package ResourceGraphDefinition file into an OCI image", | ||
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| Long: "Package command packages the ResourceGraphDefinition" + | ||
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| "file into an OCI image, which can be used for distribution and deployment.", | ||
| RunE: func(cmd *cobra.Command, args []string) error { | ||
| if packageConfig.resourceGraphDefinitionFile == "" { | ||
| return fmt.Errorf("ResourceGraphDefinition file is required") | ||
| } | ||
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| if packageConfig.outputFile == "" { | ||
| return fmt.Errorf("output file name is required") | ||
| } | ||
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| data, err := os.ReadFile(packageConfig.resourceGraphDefinitionFile) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to read ResourceGraphDefinition file: %w", err) | ||
| } | ||
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| var rgd v1alpha1.ResourceGraphDefinition | ||
| if err := yaml.Unmarshal(data, &rgd); err != nil { | ||
| return fmt.Errorf("failed to unmarshal ResourceGraphDefinition: %w", err) | ||
| } | ||
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| fmt.Fprintf(os.Stderr, "Packaging ResourceGraphDefinition into %s...\n", | ||
| packageConfig.outputFile) | ||
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| if err = packageRGD(data, &rgd); err != nil { | ||
| return fmt.Errorf("failed to package ResourceGraphDefinition: %w", err) | ||
| } | ||
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| fmt.Fprintf(os.Stderr, "Successfully packaged ResourceGraphDefinition to %s\n", | ||
| packageConfig.outputFile) | ||
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| return nil | ||
| }, | ||
| } | ||
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| func packageRGD(data []byte, rgd *v1alpha1.ResourceGraphDefinition) error { | ||
| layer := static.NewLayer(data, types.MediaType("application/vnd.kro.resourcegraphdefinition.v1alpha1+yaml")) | ||
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| img := empty.Image | ||
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| img, err := mutate.AppendLayers(img, layer) | ||
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| if err != nil { | ||
| return fmt.Errorf("failed to append layer: %w", err) | ||
| } | ||
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| configFile, err := img.ConfigFile() | ||
| if err != nil { | ||
| return fmt.Errorf("failed to get config file: %w", err) | ||
| } | ||
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| now := time.Now() | ||
| configFile.Created = v1.Time{Time: now} | ||
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| configFile.Config.Labels = map[string]string{ | ||
| "kro.run/type": "resourcegraphdefinition", | ||
| "kro.run/name": rgd.Name, | ||
| } | ||
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| img, err = mutate.ConfigFile(img, configFile) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to update image config: %w", err) | ||
| } | ||
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| ref, err := name.ParseReference(fmt.Sprintf("kro.run/rgd/%s:latest", rgd.Name)) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to parse image reference: %w", err) | ||
| } | ||
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| if err := tarball.WriteToFile(packageConfig.outputFile, ref, img); err != nil { | ||
| return fmt.Errorf("failed to write image to file: %w", err) | ||
| } | ||
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| return nil | ||
| } | ||
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| func AddPackageCommand(rootCmd *cobra.Command) { | ||
| rootCmd.AddCommand(packageRGDCmd) | ||
| } | ||
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