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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,168 @@ | ||
| // Package chartutils implements helper functions to manipulate helm Charts | ||
| package chartutils | ||
|
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| import ( | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| "strings" | ||
|
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| "github.com/vmware-labs/distribution-tooling-for-helm/chartutils" | ||
| "github.com/vmware-labs/distribution-tooling-for-helm/imagelock" | ||
| "github.com/vmware-tanzu/carvel-imgpkg/pkg/imgpkg/lockconfig" | ||
|
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| "gopkg.in/yaml.v3" | ||
| ) | ||
|
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| // Somehow there is no data structure for a bundle in Carvel. Copying some basics from the describe command. | ||
|
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| // Author information from a Bundle | ||
| type Author struct { | ||
| Name string `json:"name,omitempty"` | ||
| Email string `json:"email,omitempty"` | ||
| } | ||
|
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| // Website URL where more information of the Bundle can be found | ||
| type Website struct { | ||
| URL string `json:"url,omitempty"` | ||
| } | ||
|
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| // Bundle Metadata | ||
| const ( | ||
| BundleAPIVersion = "imgpkg.carvel.dev/v1alpha1" | ||
| BundleKind = "Bundle" | ||
| ) | ||
|
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| // BundleVersion with detailsa bout the Carvel bundle version | ||
| type BundleVersion struct { | ||
| APIVersion string `json:"apiVersion"` // This generated yaml, but due to lib we need to use `json` | ||
| Kind string `json:"kind"` // This generated yaml, but due to lib we need to use `json` | ||
| } | ||
|
|
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| // Metadata for a Carvel bundle | ||
| type Metadata struct { | ||
| Version BundleVersion | ||
| Metadata map[string]string `json:"metadata,omitempty"` | ||
| Authors []Author `json:"authors,omitempty"` | ||
| Websites []Website `json:"websites,omitempty"` | ||
| } | ||
|
|
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| // ToYAML serializes the Carvel bundle into YAML | ||
| func (il *Metadata) ToYAML(w io.Writer) error { | ||
| enc := yaml.NewEncoder(w) | ||
| enc.SetIndent(2) | ||
|
|
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| return enc.Encode(il) | ||
| } | ||
|
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| // CarvelBundleFromYAMLFile Deserializes a string into a Metadata struct | ||
| func CarvelBundleFromYAMLFile(file string) (*Metadata, error) { | ||
| fh, err := os.Open(file) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to open Images.lock file: %v", err) | ||
| } | ||
| defer fh.Close() | ||
| return CarvelBundleFromYAML(fh) | ||
| } | ||
|
|
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| // CarvelBundleFromYAML reads a Carvel metadata bundled from the YAML read from r | ||
| func CarvelBundleFromYAML(r io.Reader) (*Metadata, error) { | ||
| metadata := &Metadata{ | ||
| Version: BundleVersion{ | ||
| APIVersion: BundleAPIVersion, | ||
| Kind: BundleKind, | ||
| }, | ||
| Metadata: map[string]string{}, | ||
| Authors: []Author{}, | ||
| Websites: []Website{}, | ||
| } | ||
| dec := yaml.NewDecoder(r) | ||
| if err := dec.Decode(metadata); err != nil { | ||
| return nil, fmt.Errorf("failed to load Carvel bundle: %v", err) | ||
| } | ||
|
|
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| return metadata, nil | ||
| } | ||
|
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| // NewCarvelBundle returns a new carvel bundle Metadata instance | ||
| func NewCarvelBundle() *Metadata { | ||
|
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| return &Metadata{ | ||
| Version: BundleVersion{ | ||
| APIVersion: BundleAPIVersion, | ||
| Kind: BundleKind, | ||
| }, | ||
| Metadata: map[string]string{}, | ||
| Authors: []Author{}, | ||
| Websites: []Website{}, | ||
| } | ||
| } | ||
|
|
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| // PrepareBundleMetadata builds and sets a new Carvel bundle struct | ||
| func PrepareBundleMetadata(chartPath string, lock *imagelock.ImagesLock) (*Metadata, error) { | ||
|
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| bundleMetadata := NewCarvelBundle() | ||
|
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| chart, err := chartutils.LoadChart(chartPath) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to load chart: %w", err) | ||
| } | ||
|
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| for _, maintainer := range chart.Metadata.Maintainers { | ||
| author := Author{ | ||
| Name: maintainer.Name, | ||
| } | ||
| if maintainer.Email != "" { | ||
| author.Email = maintainer.Email | ||
| } | ||
| bundleMetadata.Authors = append(bundleMetadata.Authors, author) | ||
| } | ||
| for _, source := range chart.Metadata.Sources { | ||
| website := Website{ | ||
| URL: source, | ||
| } | ||
| bundleMetadata.Websites = append(bundleMetadata.Websites, website) | ||
| } | ||
|
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| bundleMetadata.Metadata["name"] = lock.Chart.Name | ||
| for key, value := range chart.Metadata.Annotations { | ||
| if key != "images" { | ||
| bundleMetadata.Metadata[key] = value | ||
| } | ||
| } | ||
| return bundleMetadata, nil | ||
| } | ||
|
|
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| // PrepareImagesLock builds and set a new Carvel images lock struct | ||
| func PrepareImagesLock(lock *imagelock.ImagesLock) (lockconfig.ImagesLock, error) { | ||
|
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| imagesLock := lockconfig.ImagesLock{ | ||
| LockVersion: lockconfig.LockVersion{ | ||
| APIVersion: lockconfig.ImagesLockAPIVersion, | ||
| Kind: lockconfig.ImagesLockKind, | ||
| }, | ||
| } | ||
| for _, img := range lock.Images { | ||
| // Carvel does not seem to support multi-arch. Grab amd64 digest | ||
| name := img.Image | ||
| i := strings.LastIndex(img.Image, ":") | ||
| if i > -1 { | ||
| name = img.Image[0:i] | ||
|
|
||
| } | ||
| for _, digest := range img.Digests { | ||
| if digest.Arch == "linux/amd64" { | ||
| name = name + "@" + digest.Digest.String() | ||
| break | ||
| } | ||
| } | ||
| imageRef := lockconfig.ImageRef{ | ||
| Image: name, | ||
| Annotations: map[string]string{ | ||
| "kbld.carvel.dev/id": img.Image, | ||
| }, | ||
| } | ||
| imagesLock.AddImageRef(imageRef) | ||
| } | ||
| return imagesLock, nil | ||
| } |
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