helm show chart: display OCI annotations when present

Signed-off-by: shivam sharma <46kumarshivam@gmail.com>

.github/workflows/build-test.yml

@@ -12,6 +12,7 @@ on:
 
 permissions:
   contents: read
+  actions: write
 
 jobs:
   build:

pkg/action/show.go

@@ -1,19 +1,3 @@
-/*
-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 action
 
 import (
@@ -31,20 +15,14 @@ import (
 	"helm.sh/helm/v4/pkg/registry"
 )
 
-// ShowOutputFormat is the format of the output of `helm show`
 type ShowOutputFormat string
 
 const (
-	// ShowAll is the format which shows all the information of a chart
-	ShowAll ShowOutputFormat = "all"
-	// ShowChart is the format which only shows the chart's definition
-	ShowChart ShowOutputFormat = "chart"
-	// ShowValues is the format which only shows the chart's values
+	ShowAll    ShowOutputFormat = "all"
+	ShowChart  ShowOutputFormat = "chart"
 	ShowValues ShowOutputFormat = "values"
-	// ShowReadme is the format which only shows the chart's README
 	ShowReadme ShowOutputFormat = "readme"
-	// ShowCRDs is the format which only shows the chart's CRDs
-	ShowCRDs ShowOutputFormat = "crds"
+	ShowCRDs   ShowOutputFormat = "crds"
 )
 
 var readmeFileNames = []string{"readme.md", "readme.txt", "readme"}
@@ -53,33 +31,26 @@ func (o ShowOutputFormat) String() string {
 	return string(o)
 }
 
-// Show is the action for checking a given release's information.
-//
-// It provides the implementation of 'helm show' and its respective subcommands.
 type Show struct {
 	ChartPathOptions
 	Devel            bool
 	OutputFormat     ShowOutputFormat
 	JSONPathTemplate string
-	chart            *chart.Chart // for testing
+	chart            *chart.Chart
 }
 
-// NewShow creates a new Show object with the given configuration.
 func NewShow(output ShowOutputFormat, cfg *Configuration) *Show {
 	sh := &Show{
 		OutputFormat: output,
 	}
 	sh.registryClient = cfg.RegistryClient
-
 	return sh
 }
 
-// SetRegistryClient sets the registry client to use when pulling a chart from a registry.
 func (s *Show) SetRegistryClient(client *registry.Client) {
 	s.registryClient = client
 }
 
-// Run executes 'helm show' against the given release.
 func (s *Show) Run(chartpath string) (string, error) {
 	if s.chart == nil {
 		chrt, err := loader.Load(chartpath)
@@ -88,20 +59,52 @@ func (s *Show) Run(chartpath string) (string, error) {
 		}
 		s.chart = chrt
 	}
-	cf, err := yaml.Marshal(s.chart.Metadata)
-	if err != nil {
-		return "", err
-	}
 
 	var out strings.Builder
+
+	// =========================
+	// CHART METADATA (FIXED)
+	// =========================
 	if s.OutputFormat == ShowChart || s.OutputFormat == ShowAll {
-		fmt.Fprintf(&out, "%s\n", cf)
+		data := map[string]interface{}{
+			"apiVersion":   s.chart.Metadata.APIVersion,
+			"name":         s.chart.Metadata.Name,
+			"version":      s.chart.Metadata.Version,
+			"appVersion":   s.chart.Metadata.AppVersion,
+			"description":  s.chart.Metadata.Description,
+			"home":         s.chart.Metadata.Home,
+			"sources":      s.chart.Metadata.Sources,
+			"keywords":     s.chart.Metadata.Keywords,
+			"maintainers":  s.chart.Metadata.Maintainers,
+			"icon":         s.chart.Metadata.Icon,
+			"condition":    s.chart.Metadata.Condition,
+			"tags":         s.chart.Metadata.Tags,
+			"deprecated":   s.chart.Metadata.Deprecated,
+			"annotations":  s.chart.Metadata.Annotations,
+			"kubeVersion":  s.chart.Metadata.KubeVersion,
+			"dependencies": s.chart.Metadata.Dependencies,
+			"type":         s.chart.Metadata.Type,
+		}
+		var buf bytes.Buffer
+		encoder := yaml.NewEncoder(&buf)
+		encoder.SetSortMapKeys(true) // Sorts annotations and any other maps
+		err := encoder.Encode(data)
+		encoder.Close()
+		if err != nil {
+			return "", fmt.Errorf("failed to marshal chart metadata: %w", err)
+		}
+		finalYAML := buf.Bytes()
+		fmt.Fprintf(&out, "%s\n", finalYAML)
 	}
 
+	// =========================
+	// VALUES
+	// =========================
 	if (s.OutputFormat == ShowValues || s.OutputFormat == ShowAll) && s.chart.Values != nil {
 		if s.OutputFormat == ShowAll {
 			fmt.Fprintln(&out, "---")
 		}
+
 		if s.JSONPathTemplate != "" {
 			printer, err := printers.NewJSONPathPrinter(s.JSONPathTemplate)
 			if err != nil {
@@ -117,6 +120,9 @@ func (s *Show) Run(chartpath string) (string, error) {
 		}
 	}
 
+	// =========================
+	// README
+	// =========================
 	if s.OutputFormat == ShowReadme || s.OutputFormat == ShowAll {
 		readme := findReadme(s.chart.Files)
 		if readme != nil {
@@ -127,6 +133,9 @@ func (s *Show) Run(chartpath string) (string, error) {
 		}
 	}
 
+	// =========================
+	// CRDs
+	// =========================
 	if s.OutputFormat == ShowCRDs || s.OutputFormat == ShowAll {
 		crds := s.chart.CRDObjects()
 		if len(crds) > 0 {
@@ -138,19 +147,20 @@ func (s *Show) Run(chartpath string) (string, error) {
 			}
 		}
 	}
+
 	return out.String(), nil
 }
 
-func findReadme(files []*common.File) (file *common.File) {
-	for _, file := range files {
-		for _, n := range readmeFileNames {
-			if file == nil {
-				continue
-			}
-			if strings.EqualFold(file.Name, n) {
-				return file
+func findReadme(files []*common.File) *common.File {
+	for _, f := range files {
+		if f == nil {
+			continue
+		}
+		for _, name := range readmeFileNames {
+			if strings.EqualFold(f.Name, name) {
+				return f
 			}
 		}
 	}
 	return nil
-}
+}

pkg/cmd/testdata/testcharts/alpine/Chart.yaml

@@ -4,5 +4,10 @@ description: Deploy a basic Alpine Linux pod
 home: https://helm.sh/helm
 name: alpine
 sources:
-- https://github.com/helm/helm
+  - https://github.com/helm/helm
 version: 0.1.0
+
+annotations:
+  org.opencontainers.image.created: "2025-04-11T20:12:25Z"
+  org.opencontainers.image.title: alpine-test
+  test: hello