fix: P1 — classifyOperation accepts any underscore prefix + format.Source warns instead of silently writing broken Go

universal_rebuild/tools/gen_v2/generate_resources_v2.go

@@ -620,10 +620,7 @@ func writeInstanceResource(outDir string, svc GenResource) error {
 		return err
 	}
 
-	formatted, err := format.Source(buf.Bytes())
+	formatted := formatSourceOrWarn(filePath, buf.Bytes())
-	if err != nil {
-		formatted = buf.Bytes()
-	}
 
 	return os.WriteFile(filePath, formatted, 0644)
 }
@@ -654,10 +651,7 @@ func writeSubresource(outDir string, sr GenSubresource) error {
 		return err
 	}
 
-	formatted, err := format.Source(buf.Bytes())
+	formatted := formatSourceOrWarn(filePath, buf.Bytes())
-	if err != nil {
-		formatted = buf.Bytes()
-	}
 
 	return os.WriteFile(filePath, formatted, 0644)
 }
@@ -686,10 +680,7 @@ func writeActionResource(outDir string, act GenAction) error {
 		return err
 	}
 
-	formatted, err := format.Source(buf.Bytes())
+	formatted := formatSourceOrWarn(filePath, buf.Bytes())
-	if err != nil {
-		formatted = buf.Bytes()
-	}
 
 	return os.WriteFile(filePath, formatted, 0644)
 }
@@ -713,12 +704,10 @@ func writeRegistry(outDir string, services []GenResource, subs []GenSubresource,
 	buf.WriteString("\t}\n")
 	buf.WriteString("}\n")
 
-	formatted, err := format.Source(buf.Bytes())
+	regPath := filepath.Join(outDir, "registry.go")
-	if err != nil {
+	formatted := formatSourceOrWarn(regPath, buf.Bytes())
-		formatted = buf.Bytes()
-	}
 
-	return os.WriteFile(filepath.Join(outDir, "registry.go"), formatted, 0644)
+	return os.WriteFile(regPath, formatted, 0644)
 }
 
 func toCamel(s string) string {
@@ -2077,6 +2066,17 @@ func validateSpec(path string, spec *ServiceSpec) error {
 	return nil
 }
 
+
+// formatSourceOrWarn форматирует Go-код. При ошибке пишет warning в stderr и возвращает неформатированный код.
+func formatSourceOrWarn(filePath string, src []byte) []byte {
+	formatted, err := format.Source(src)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "WARNING: gofmt failed for %s: %v — writing unformatted code\n", filePath, err)
+		return src
+	}
+	return formatted
+}
+
 func buildSubresourceForceNewCodes(sr *GenSubresource, createOnly map[string]struct{}) map[string]struct{} {
 	forceNew := map[string]struct{}{}
 	if sr.ModifyOpName == "" {