refactor to ddh, first commit

old/modules/utils/pipes/rpc.validation-pipe.ts

@@ -0,0 +1,14 @@
+import { Injectable, ValidationPipe } from '@nestjs/common';
+import { RpcException } from '@nestjs/microservices';
+
+@Injectable()
+export class RpcValidationPipe extends ValidationPipe {
+  createExceptionFactory() {
+    return (validationErrors = []) => {
+      return new RpcException({
+        code: 3,
+        message: this.flattenValidationErrors(validationErrors),
+      });
+    };
+  }
+}