feat: add possibility to config json middleware

Author: MatthewPattell

src/interfaces/services/i-gateway.ts

@@ -1,3 +1,4 @@
+import type { OptionsJson } from 'body-parser';
 import type { Express, Request } from 'express';
 import type { IMicroserviceRequest } from '@interfaces/core/i-microservice-request';
 import type {
@@ -12,6 +13,7 @@ interface IGatewayOptions extends IAbstractMicroserviceOptions {
   reqTimeout: number;
   hasAutoRegistration: boolean;
   batchLimit: number;
+  jsonParams: OptionsJson;
 }
 
 interface IGatewayParams extends IAbstractMicroserviceParams {

src/services/gateway.ts

@@ -35,6 +35,7 @@ class Gateway extends AbstractMicroservice {
     reqTimeout: 1000 * 15, // 15 seconds
     hasAutoRegistration: true, // auto registration microservices
     batchLimit: 5,
+    jsonParams: {},
   };
 
   /**
@@ -66,12 +67,12 @@ class Gateway extends AbstractMicroservice {
     this.init(options, params);
 
     const { beforeRoute, afterRoute } = params;
-    const { listener } = this.options;
+    const { listener, jsonParams } = this.options;
     const [, ...route] = listener.split('/');
 
     this.express.disable('x-powered-by');
     // Parse JSON body request
-    this.express.use(express.json());
+    this.express.use(express.json(jsonParams));
     beforeRoute?.(this.express);
     // Set gateway request listener
     this.express.post(`/${route.join('/')}`, this.handleClientRequest.bind(this));