misc: added proper handling for gateway name conflicts

backend/src/ee/services/gateway-v2/gateway-v2-service.ts

@@ -6,7 +6,8 @@ import * as x509 from "@peculiar/x509";
 import { TProxies } from "@app/db/schemas";
 import { PgSqlLock } from "@app/keystore/keystore";
 import { crypto } from "@app/lib/crypto";
-import { BadRequestError, NotFoundError } from "@app/lib/errors";
+import { DatabaseErrorCode } from "@app/lib/error-codes";
+import { BadRequestError, DatabaseError, NotFoundError } from "@app/lib/errors";
 import { GatewayProxyProtocol } from "@app/lib/gateway/types";
 import { withGatewayV2Proxy } from "@app/lib/gateway-v2/gateway-v2";
 import { OrgServiceActor } from "@app/lib/types";
@@ -439,6 +440,7 @@ export const gatewayV2ServiceFactory = ({
       throw new NotFoundError({ message: `Proxy ${proxyName} not found` });
     }
 
+    try {
       const [gateway] = await gatewayV2DAL.upsert(
         [
           {
@@ -525,6 +527,13 @@ export const gatewayV2ServiceFactory = ({
           serverCAPublicKey: proxyCredentials.serverCAPublicKey
         }
       };
+    } catch (err) {
+      if (err instanceof DatabaseError && (err.error as { code: string })?.code === DatabaseErrorCode.UniqueViolation) {
+        throw new BadRequestError({ message: `Gateway with name "${name}" already exists` });
+      }
+
+      throw err;
+    }
   };
 
   const heartbeat = async ({ orgPermission }: { orgPermission: OrgServiceActor }) => {