Showcase a ComposableDashboardPanel() veneer selector

cmd/cli/loaders/openapi.go

@@ -12,7 +12,10 @@ func openapiLoader(opts Options) ([]*ast.Schema, error) {
 	for _, entrypoint := range opts.OpenAPIEntrypoints {
 		pkg := filepath.Base(filepath.Dir(entrypoint))
 		schemaAst, err := openapi.GenerateAST(entrypoint, openapi.Config{
-			Package: pkg,
+			Package:        pkg,
+			SchemaMetadata: ast.SchemaMeta{
+				// TODO: extract these from somewhere
+			},
 		})
 		if err != nil {
 			return nil, err

internal/openapi/generator.go

@@ -23,7 +23,8 @@ const (
 )
 
 type Config struct {
-	Package string
+	Package        string
+	SchemaMetadata ast.SchemaMeta
 }
 
 type generator struct {
@@ -42,7 +43,10 @@ func GenerateAST(filePath string, cfg Config) (*ast.Schema, error) {
 	}
 
 	g := &generator{
-		file: &ast.Schema{Package: cfg.Package},
+		file: &ast.Schema{
+			Package:  cfg.Package,
+			Metadata: cfg.SchemaMetadata,
+		},
 	}
 
 	if oapi.Components == nil {

internal/veneers/builder/actions.go

@@ -50,3 +50,9 @@ func MergeIntoAction(sourceBuilderName string, underPath string, excludeOptions
 		return newBuilder
 	}
 }
+
+func ComposeDashboardPanelAction(_ /*panelBuilderName*/ string) RewriteAction {
+	return func(builders ast.Builders, destinationBuilder ast.Builder) ast.Builder {
+		return destinationBuilder
+	}
+}

internal/veneers/builder/rules.go

@@ -18,3 +18,10 @@ func MergeInto(selector Selector, sourceBuilderName string, underPath string, ex
 		Action:   MergeIntoAction(sourceBuilderName, underPath, excludeOptions),
 	}
 }
+
+func ComposeDashboardPanel(selector Selector, sourceBuilderName string) RewriteRule {
+	return RewriteRule{
+		Selector: selector,
+		Action:   ComposeDashboardPanelAction(sourceBuilderName),
+	}
+}

internal/veneers/builder/selectors.go

@@ -22,6 +22,14 @@ func StructGeneratedFromDisjunction() Selector {
 	}
 }
 
+func ComposableDashboardPanel() Selector {
+	return func(builder ast.Builder) bool {
+		return builder.Schema.Metadata.Kind == ast.SchemaKindComposable &&
+			builder.Schema.Metadata.Variant == ast.SchemaVariantPanel &&
+			builder.Schema.Metadata.Identifier != ""
+	}
+}
+
 func EveryBuilder() Selector {
 	return func(builder ast.Builder) bool {
 		return true

internal/veneers/veneers.go

@@ -31,6 +31,12 @@ func Common() *Rewriter {
 				},
 			),
 
+			// Panels composability
+			builder.ComposeDashboardPanel(
+				builder.ComposableDashboardPanel(),
+				"dashboard.Panel",
+			),
+
 			// remove builders that were previously merged into something else
 			builder.Omit(builder.ByName("FieldConfig")),
 			builder.Omit(builder.ByName("FieldConfigSource")),