chore: fix loading the certs repetetively

Ticket: WP-00000

Author: pranavjain97

src/api/enclaved/postIndependentKey.ts

@@ -12,7 +12,7 @@ export async function postIndependentKey(
 
   // setup clients
   const bitgo: BitGo = req.bitgo;
-  const kms = new KmsClient();
+  const kms = new KmsClient(req.config);
 
   // create public and private key pairs on BitGo SDK
   const coin = bitgo.coin(req.params.coin);

src/api/enclaved/signMultisigTransaction.ts

@@ -19,7 +19,7 @@ export async function signMultisigTransaction(
   }
 
   const bitgo = req.bitgo;
-  const kms = new KmsClient();
+  const kms = new KmsClient(req.config);
 
   // Retrieve the private key from KMS
   let prv: string;

src/config.ts

@@ -214,8 +214,8 @@ function masterExpressEnvConfig(): Partial<MasterExpressConfig> {
     throw new Error('ENCLAVED_EXPRESS_URL environment variable is required and cannot be empty');
   }
 
-  if (!enclavedExpressCert) {
-    throw new Error('ENCLAVED_EXPRESS_CERT environment variable is required and cannot be empty');
+  if (tlsMode === TlsMode.MTLS && !enclavedExpressCert) {
+    throw new Error('ENCLAVED_EXPRESS_CERT environment variable is required for MTLS mode.');
   }
 
   // Debug mTLS environment variables

src/kms/kmsClient.ts

@@ -1,6 +1,6 @@
 import debug from 'debug';
 import * as superagent from 'superagent';
-import { config, isMasterExpressConfig } from '../config';
+import { EnclavedConfig, isMasterExpressConfig } from '../config';
 import { PostKeyKmsSchema, PostKeyParams, PostKeyResponse } from './types/postKey';
 import { GetKeyKmsSchema, GetKeyParams, GetKeyResponse } from './types/getKey';
 
@@ -9,8 +9,7 @@ const debugLogger = debug('bitgo:express:kmsClient');
 export class KmsClient {
   private readonly url: string;
 
-  constructor() {
-    const cfg = config();
+  constructor(cfg: EnclavedConfig) {
     if (isMasterExpressConfig(cfg)) {
       throw new Error('Configuration is not in enclaved express mode');
     }