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Merge pull request #4 from controlplaneio-fluxcd/components-image-update
Automated updates for components image digest
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| // Copyright 2024 Stefan Prodan. | ||
| // SPDX-License-Identifier: AGPL-3.0 | ||
|
|
||
| package builder | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "fmt" | ||
| "io" | ||
| "net/http" | ||
| "os" | ||
| "path/filepath" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/fluxcd/pkg/apis/kustomize" | ||
| ssautil "github.com/fluxcd/pkg/ssa/utils" | ||
| gcname "github.com/google/go-containerregistry/pkg/name" | ||
| "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured" | ||
| "sigs.k8s.io/yaml" | ||
| ) | ||
|
|
||
| // ComponentImage represents a container image used by a component. | ||
| type ComponentImage struct { | ||
| Name string | ||
| Repository string | ||
| Tag string | ||
| Digest string | ||
| } | ||
|
|
||
| // ExtractComponentImages reads the source directory and extracts the container images | ||
| // from the components manifests. | ||
| func ExtractComponentImages(srcDir string, opts Options) ([]ComponentImage, error) { | ||
| images := make([]ComponentImage, len(opts.Components)) | ||
| for i, component := range opts.Components { | ||
| d, err := os.ReadFile(filepath.Join(srcDir, fmt.Sprintf("/%s.yaml", component))) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| objects, err := ssautil.ReadObjects(bytes.NewReader(d)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| for _, obj := range objects { | ||
| if obj.GetKind() == "Deployment" { | ||
| containers, ok, _ := unstructured.NestedSlice(obj.Object, "spec", "template", "spec", "containers") | ||
| if !ok { | ||
| return nil, fmt.Errorf("containers not found in %s", obj.GetName()) | ||
| } | ||
| for _, container := range containers { | ||
| img := container.(map[string]interface{})["image"].(string) | ||
| tag, err := gcname.NewTag(img, gcname.WeakValidation) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| images[i] = ComponentImage{ | ||
| Name: component, | ||
| Repository: fmt.Sprintf("%s/%s", strings.TrimSuffix(opts.Registry, "/"), component), | ||
| Tag: tag.Identifier(), | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return images, nil | ||
| } | ||
|
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| // FetchComponentImages fetches the components images from the distribution repository. | ||
| func FetchComponentImages(opts Options) (images []ComponentImage, err error) { | ||
| registry := strings.TrimSuffix(opts.Registry, "/") | ||
| var distro string | ||
|
|
||
| switch registry { | ||
| case "fluxcd": | ||
| distro = "upstream-alpine" | ||
| case "ghcr.io/fluxcd": | ||
| distro = "upstream-alpine" | ||
| case "ghcr.io/controlplaneio-fluxcd/alpine": | ||
| distro = "enterprise-alpine" | ||
| case "ghcr.io/controlplaneio-fluxcd/distroless": | ||
| distro = "enterprise-distroless" | ||
| default: | ||
| return nil, fmt.Errorf("unsupported registry: %s", registry) | ||
| } | ||
|
|
||
| const ghRepo = "https://raw.githubusercontent.com/controlplaneio-fluxcd/distribution/main/images" | ||
| ghURL := fmt.Sprintf("%s/%s/%s.yaml", ghRepo, opts.Version, distro) | ||
|
|
||
| ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) | ||
| defer cancel() | ||
|
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||
| req, err := http.NewRequestWithContext(ctx, http.MethodGet, ghURL, nil) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| resp, err := http.DefaultClient.Do(req) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| data, err := io.ReadAll(resp.Body) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("read body: %v", err) | ||
| } | ||
|
|
||
| var kc struct { | ||
| Images []kustomize.Image `yaml:"images"` | ||
| } | ||
| err = yaml.Unmarshal(data, &kc) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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||
| for _, img := range kc.Images { | ||
| component := strings.TrimPrefix(img.Name, registry+"/") | ||
| if containsItemString(opts.Components, component) { | ||
| images = append(images, ComponentImage{ | ||
| Name: component, | ||
| Repository: fmt.Sprintf("%s/%s", registry, component), | ||
| Tag: img.NewTag, | ||
| Digest: img.Digest, | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| if len(images) != len(opts.Components) { | ||
| return nil, fmt.Errorf("missing images for components: %v", opts.Components) | ||
| } | ||
| return images, nil | ||
| } |
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