working commit

2026-03-13 19:02:42 +02:00
parent bebbf79c7a
commit 5c1da77f4c
1329 changed files with 314708 additions and 39 deletions
@@ -0,0 +1,124 @@
+/*
+Copyright The Helm 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.
+*/
+
+package registry // import "helm.sh/helm/v4/pkg/registry"
+
+import (
+	"bytes"
+	"strings"
+	"time"
+
+	chart "helm.sh/helm/v4/pkg/chart/v2"
+	"helm.sh/helm/v4/pkg/chart/v2/loader"
+
+	ocispec "github.com/opencontainers/image-spec/specs-go/v1"
+)
+
+var immutableOciAnnotations = []string{
+	ocispec.AnnotationVersion,
+	ocispec.AnnotationTitle,
+}
+
+// extractChartMeta is used to extract a chart metadata from a byte array
+func extractChartMeta(chartData []byte) (*chart.Metadata, error) {
+	ch, err := loader.LoadArchive(bytes.NewReader(chartData))
+	if err != nil {
+		return nil, err
+	}
+	return ch.Metadata, nil
+}
+
+// generateOCIAnnotations will generate OCI annotations to include within the OCI manifest
+func generateOCIAnnotations(meta *chart.Metadata, creationTime string) map[string]string {
+
+	// Get annotations from Chart attributes
+	ociAnnotations := generateChartOCIAnnotations(meta, creationTime)
+
+	// Copy Chart annotations
+annotations:
+	for chartAnnotationKey, chartAnnotationValue := range meta.Annotations {
+
+		// Avoid overriding key properties
+		for _, immutableOciKey := range immutableOciAnnotations {
+			if immutableOciKey == chartAnnotationKey {
+				continue annotations
+			}
+		}
+
+		// Add chart annotation
+		ociAnnotations[chartAnnotationKey] = chartAnnotationValue
+	}
+
+	return ociAnnotations
+}
+
+// generateChartOCIAnnotations will generate OCI annotations from the provided chart
+func generateChartOCIAnnotations(meta *chart.Metadata, creationTime string) map[string]string {
+	chartOCIAnnotations := map[string]string{}
+
+	chartOCIAnnotations = addToMap(chartOCIAnnotations, ocispec.AnnotationDescription, meta.Description)
+	chartOCIAnnotations = addToMap(chartOCIAnnotations, ocispec.AnnotationTitle, meta.Name)
+	chartOCIAnnotations = addToMap(chartOCIAnnotations, ocispec.AnnotationVersion, meta.Version)
+	chartOCIAnnotations = addToMap(chartOCIAnnotations, ocispec.AnnotationURL, meta.Home)
+
+	if len(creationTime) == 0 {
+		creationTime = time.Now().UTC().Format(time.RFC3339)
+	}
+
+	chartOCIAnnotations = addToMap(chartOCIAnnotations, ocispec.AnnotationCreated, creationTime)
+
+	if len(meta.Sources) > 0 {
+		chartOCIAnnotations = addToMap(chartOCIAnnotations, ocispec.AnnotationSource, meta.Sources[0])
+	}
+
+	if len(meta.Maintainers) > 0 {
+		var maintainerSb strings.Builder
+
+		for maintainerIdx, maintainer := range meta.Maintainers {
+
+			if len(maintainer.Name) > 0 {
+				maintainerSb.WriteString(maintainer.Name)
+			}
+
+			if len(maintainer.Email) > 0 {
+				maintainerSb.WriteString(" (")
+				maintainerSb.WriteString(maintainer.Email)
+				maintainerSb.WriteString(")")
+			}
+
+			if maintainerIdx < len(meta.Maintainers)-1 {
+				maintainerSb.WriteString(", ")
+			}
+
+		}
+
+		chartOCIAnnotations = addToMap(chartOCIAnnotations, ocispec.AnnotationAuthors, maintainerSb.String())
+
+	}
+
+	return chartOCIAnnotations
+}
+
+// addToMap takes an existing map and adds an item if the value is not empty
+func addToMap(inputMap map[string]string, newKey string, newValue string) map[string]string {
+
+	// Add item to map if its
+	if len(strings.TrimSpace(newValue)) > 0 {
+		inputMap[newKey] = newValue
+	}
+
+	return inputMap
+}