feat(chartvalidator): added render-only capability

chartvalidator/checker/.gitignore

@@ -4,4 +4,5 @@ helm_output
 *.bin
 manifests
 imageLists
-test_output
+test_output
+checker

chartvalidator/checker/go.mod

@@ -1,4 +1,4 @@
-module github.com/interledger/interledger-app-deploy/ci
+module github.com/builderslab/chartvalidator/checker
 
 go 1.24.5
 

chartvalidator/checker/main.go

@@ -5,6 +5,7 @@ import (
 	"flag"
 	"fmt"
 	"os"
+	"sync"
 )
 
 var srcPrefix string = "../"
@@ -22,6 +23,8 @@ func main() {
 	switch command {
 	case "run-checks":
 		runChartChecksCommand(args)
+	case "render-only":
+		runRenderOnlyCommand(args)
 	case "help", "-h", "--help":
 		printUsage()
 	default:
@@ -32,10 +35,11 @@ func main() {
 }
 
 func printUsage() {
-	fmt.Println("Usage: run-manifest-checks <command> [flags]")
+	fmt.Println("Usage: chart-checker <command> [flags]")
 	fmt.Println("")
 	fmt.Println("Commands:")
 	fmt.Println("  run-checks    Runs all available checks on the charts for given environment.")
+	fmt.Println("  render-only   Renders the charts for the given environment without performing validations.")
 	fmt.Println("  help          Displays this help message.")
 	fmt.Println("")
 	fmt.Println("Use 'run-manifest-checks <command> -h' to see command-specific flags.")
@@ -82,6 +86,89 @@ func runChartChecksCommand(args []string) {
 
 }
 
+func runRenderOnlyCommand(args []string) {
+	fs := flag.NewFlagSet("render-only", flag.ExitOnError)
+
+	var (
+		singleEnv = fs.String("env", "", "Only process this environment (folder name under -envdir).")
+		envDir    = fs.String("envdir", "../env", "Base directory containing environment folders.")
+		outputDir = fs.String("output", "manifests", "Output directory for rendered charts.")
+		verbose   = fs.Bool("v", false, "Enable verbose logging.")
+	)	
+
+	fs.Usage = func() {
+		fmt.Println("Usage: run-manifest-checks render-only [flags]")
+		fmt.Println("")
+		fmt.Println("Renders all charts found in the ApplicationSets in the specified environment and outputs the manifests to the specified output directory.")
+		fmt.Println("")		
+		fs.PrintDefaults()
+	}
+
+	if err := fs.Parse(args); err != nil {
+		os.Exit(1)
+	}
+
+	verboseLogging = *verbose
+
+	if err := runAllChartRenders(*singleEnv, *envDir, *outputDir); err != nil {
+		fmt.Fprintf(os.Stderr, "Error running chart renders: %v\n", err)
+		os.Exit(1)
+	}
+
+}
+
+
+func runAllChartRenders(singleEnv, envDir, outputDir string) error {
+	fmt.Println("Starting chart renders...")
+	params, err := findChartsInAppsets(envDir, singleEnv)
+	if err != nil {
+		return fmt.Errorf("failed to find charts in ApplicationSets: %w", err)
+	}
+
+	fmt.Printf("Found %d charts to process.\n", len(params))
+
+	context := context.Background()
+
+	// Delete output dir if it exists
+	if err := os.RemoveAll(outputDir); err != nil {
+		return fmt.Errorf("failed to clear output directory: %w", err)
+	}
+
+	renderer := ChartRenderingEngine{
+		context:    context,
+		executor:   &RealCommandExecutor{},
+		outputDir:  outputDir,
+		inputChan:  make(chan ChartRenderParams),
+		resultChan: make(chan RenderResult),
+		name:       "ChartRenderer",
+		errorChan: make(chan ErrorResult),
+		workerWaitGroup: sync.WaitGroup{},
+	}
+	renderer.Start(10)
+
+	go func() {
+		for _, p := range params {
+			renderer.inputChan <- p
+		}
+		close(renderer.inputChan)
+	}()
+
+	busy := true
+	for busy {
+		select {
+		case renderResult, ok := <-renderer.resultChan:
+			if !ok {
+				fmt.Println("No more render results.")
+				busy = false
+			}
+			fmt.Printf(">>> chart %s %s from env %s: ✓ Rendered successfully to %s\n", renderResult.Chart.ChartName, renderResult.Chart.ChartVersion, renderResult.Chart.Env, renderResult.ManifestPath)
+		case renderErr := <-renderer.errorChan:
+			fmt.Printf(">>> chart %s %s from env %s: ✗ Error: %v\n", renderErr.Chart.ChartName, renderErr.Chart.ChartVersion, renderErr.Chart.Env, renderErr.Error)
+		}
+	}
+	fmt.Printf("Done")
+	return nil
+}
 
 func runAllChartChecks(singleEnv, envDir, outputDir string) error {
 	fmt.Println("Starting chart checks...")