Merge pull request #3 from pallakartheekreddy/master

Open API validator enhancement

package.json

@@ -42,6 +42,7 @@
     "uuid": "^8.3.2",
     "winston": "^3.7.2",
     "winston-daily-rotate-file": "^4.7.1",
+    "yaml": "^2.4.2",
     "zod": "^3.14.2"
   }
 }

src/middlewares/schemaValidator.middleware.ts

@@ -5,8 +5,24 @@ import { Locals } from "../interfaces/locals.interface";
 import { getConfig } from "../utils/config.utils";
 import fs from "fs";
 import path from "path";
+import { OpenAPIV3 } from 'express-openapi-validator/dist/framework/types';
+import YAML from 'yaml';
 const protocolServerLevel = `${getConfig().app.mode.toUpperCase()}-${getConfig().app.gateway.mode.toUpperCase()}`;
 
+// Cache object
+const apiSpecCache: { [filename: string]: OpenAPIV3.Document } = {};
+
+// Function to load and cache the API spec
+const loadApiSpec = (specFile: string): OpenAPIV3.Document => {
+  if (!apiSpecCache[specFile]) {
+    console.log("Cache Not found. Loading....", specFile)
+    const apiSpecYAML = fs.readFileSync(specFile, 'utf8');
+    const apiSpec = YAML.parse(apiSpecYAML);
+    apiSpecCache[specFile] = apiSpec;
+  }
+  return apiSpecCache[specFile];
+};
+
 export const schemaErrorHandler = (
   err: any,
   req: Request,
@@ -65,7 +81,7 @@ export const openApiValidatorMiddleware = async (
   }
 
   const openApiValidator = OpenApiValidator.middleware({
-    apiSpec: specFile,
+    apiSpec: loadApiSpec(specFile),
     validateRequests: true,
     validateResponses: false,
     $refParser: {