WIP: (feat) dump CSV annotations into chart metadata

pkg/provisioner/registry/registry.go

@@ -1,14 +1,22 @@
 package registry
 
 import (
+	"bytes"
 	"context"
+	"errors"
 	"fmt"
+	"io"
 	"io/fs"
+	"path/filepath"
 
 	"helm.sh/helm/v3/pkg/chart"
 	"helm.sh/helm/v3/pkg/chartutil"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime"
+	apimachyaml "k8s.io/apimachinery/pkg/util/yaml"
 
+	"github.com/operator-framework/api/pkg/operators/v1alpha1"
 	rukpakv1alpha2 "github.com/operator-framework/rukpak/api/v1alpha2"
 	"github.com/operator-framework/rukpak/pkg/convert"
 	"github.com/operator-framework/rukpak/pkg/provisioner/plain"
@@ -24,5 +32,62 @@
 	if err != nil {
 		return nil, nil, fmt.Errorf("convert registry+v1 bundle to plain+v0 bundle: %v", err)
 	}
-	return plain.HandleBundleDeployment(ctx, plainFS, bd)
+	csv, err := registryV1ExtractCSV(fsys)
+	if err != nil {
+		return nil, nil, err
+	}
+	chart, vals, err := plain.HandleBundleDeployment(ctx, plainFS, bd)
+	if err != nil {
+		return nil, nil, err
+	}
+	// Append CSV Annotations to Chart Metadata Annotations
+	for k, v := range csv.GetAnnotations() {
+		chart.Metadata.Annotations[k] = v
+	}
+	return chart, vals, err
+}
+
+func registryV1ExtractCSV(fsys fs.FS) (*v1alpha1.ClusterServiceVersion, error) {
+	var objects []*unstructured.Unstructured
+	const manifestsDir = "manifests"
+
+	entries, err := fs.ReadDir(fsys, manifestsDir)
+	if err != nil {
+		return nil, err
+	}
+	for _, e := range entries {
+		if e.IsDir() {
+			return nil, fmt.Errorf("subdirectories are not allowed within the %q directory of the bundle image filesystem: found %q", manifestsDir, filepath.Join(manifestsDir, e.Name()))
+		}
+		fileData, err := fs.ReadFile(fsys, filepath.Join(manifestsDir, e.Name()))
+		if err != nil {
+			return nil, err
+		}
+
+		dec := apimachyaml.NewYAMLOrJSONDecoder(bytes.NewReader(fileData), 1024)
+		for {
+			obj := unstructured.Unstructured{}
+			err := dec.Decode(&obj)
+			if errors.Is(err, io.EOF) {
+				break
+			}
+			if err != nil {
+				return nil, fmt.Errorf("read %q: %v", e.Name(), err)
+			}
+			objects = append(objects, &obj)
+		}
+	}
+
+	for _, obj := range objects {
+		obj := obj
+		if obj.GetObjectKind().GroupVersionKind().Kind == "ClusterServiceVersion" {
+			csv := v1alpha1.ClusterServiceVersion{}
+			if err := runtime.DefaultUnstructuredConverter.FromUnstructured(obj.Object, &csv); err != nil {
+				return nil, err
+			}
+			return &csv, nil
+		}
+	}
+
+	return nil, fmt.Errorf("no csv found within the %q directory of the bundle image filesystem", manifestsDir)
 }