Function WriteJavaOptsWithPriority

src/java/jres/jre.go:341–366

WriteJavaOptsWithPriority writes JAVA_OPTS to a numbered .opts file for centralized assembly Priority determines execution order (lower numbers run first) Multiple calls with the same priority/name will append to the same file

(ctx *common.Context, priority int, name string, opts string)

// Priority determines execution order (lower numbers run first)
// Multiple calls with the same priority/name will append to the same file
func WriteJavaOptsWithPriority(ctx *common.Context, priority int, name string, opts string) error {
	// Create java_opts directory in deps
	optsDir := filepath.Join(ctx.Stager.DepDir(), "java_opts")
	if err := os.MkdirAll(optsDir, 0755); err != nil {
		return fmt.Errorf("failed to create java_opts directory: %w", err)
	}

	// Write .opts file with priority prefix (e.g., 05_jre.opts)
	filename := fmt.Sprintf("%02d_%s.opts", priority, name)
	optsFile := filepath.Join(optsDir, filename)

	// Append to existing content if file exists
	var content string
	if existing, err := os.ReadFile(optsFile); err == nil {
		content = strings.TrimSpace(string(existing)) + " " + opts
	} else {
		content = opts
	}

	if err := os.WriteFile(optsFile, []byte(content), 0644); err != nil {
		return fmt.Errorf("failed to write %s: %w", filename, err)
	}

	ctx.Log.Debug("Wrote JAVA_OPTS to %s (priority %d)", filename, priority)
	return nil
}

// WriteJavaHomeProfileD creates a profile.d script that exports JAVA_HOME, JRE_HOME, and PATH at runtime
// This is needed for containers that use startup scripts expecting $JAVA_HOME environment variable