publish errors for invalid ads

src/modules/ad/adapters/primaries/ad-messager.controller.ts

@@ -6,6 +6,8 @@ import { CreateAdRequest } from '../../domain/dtos/create-ad.request';
 import { validateOrReject } from 'class-validator';
 import { Messager } from '../secondaries/messager';
 import { plainToInstance } from 'class-transformer';
+import { DatabaseException } from 'src/modules/database/exceptions/database.exception';
+import { ExceptionCode } from 'src/modules/utils/exception-code.enum';
 
 @Controller()
 export class AdMessagerController {
@@ -18,12 +20,10 @@ export class AdMessagerController {
     name: 'adCreated',
   })
   async adCreatedHandler(message: string): Promise<void> {
+    let createAdRequest: CreateAdRequest;
+    // parse message to request instance
     try {
-      // parse message to request instance
-      const createAdRequest: CreateAdRequest = plainToInstance(
-        CreateAdRequest,
-        JSON.parse(message),
-      );
+      createAdRequest = plainToInstance(CreateAdRequest, JSON.parse(message));
       // validate instance
       await validateOrReject(createAdRequest);
       // validate nested objects (fixes direct nested validation bug)
@@ -34,8 +34,40 @@ export class AdMessagerController {
           throw e;
         }
       }
+    } catch (e) {
+      this.messager.publish(
+        'matcher.ad.crit',
+        JSON.stringify({
+          message: `Can't validate message : ${message}`,
+          error: e,
+        }),
+      );
+    }
+    try {
       await this.commandBus.execute(new CreateAdCommand(createAdRequest));
     } catch (e) {
+      if (e instanceof DatabaseException) {
+        if (e.message.includes('already exists')) {
+          this.messager.publish(
+            'matcher.ad.crit',
+            JSON.stringify({
+              code: ExceptionCode.ALREADY_EXISTS,
+              message: 'Already exists',
+              uuid: createAdRequest.uuid,
+            }),
+          );
+        }
+        if (e.message.includes("Can't reach database server")) {
+          this.messager.publish(
+            'matcher.ad.crit',
+            JSON.stringify({
+              code: ExceptionCode.UNAVAILABLE,
+              message: 'Database server unavailable',
+              uuid: createAdRequest.uuid,
+            }),
+          );
+        }
+      }
       this.messager.publish(
         'logging.matcher.ad.crit',
         JSON.stringify({