Fix common router request handler issue (elastic#32275)

* Add `await` to common router request handler

* Remove once() from common license checker and call with request factories

x-pack/server/lib/create_router/call_with_request_factory/call_with_request_factory.js

@@ -4,15 +4,9 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
-import { once } from 'lodash';
-
-const callWithRequest = once(server => {
-  const cluster = server.plugins.elasticsearch.getCluster('data');
-  return cluster.callWithRequest;
-});
-
 export const callWithRequestFactory = (server, request) => {
+  const { callWithRequest } = server.plugins.elasticsearch.getCluster('data');
   return (...args) => {
-    return callWithRequest(server)(request, ...args);
+    return callWithRequest(request, ...args);
   };
 };

x-pack/server/lib/create_router/index.js

@@ -16,13 +16,13 @@ export const createRouter = (server, pluginId, apiBasePath = '') => {
   const requestHandler = (handler) => async (request, h) => {
     const callWithRequest = callWithRequestFactory(server, request);
     try {
-      return handler(request, callWithRequest, h);
+      return await handler(request, callWithRequest, h);
     } catch (err) {
       if (isEsError(err)) {
-        throw wrapEsError(err);
+        return wrapEsError(err);
       }
 
-      throw wrapUnknownError(err);
+      return wrapUnknownError(err);
     }
   };
 

x-pack/server/lib/create_router/license_pre_routing_factory/license_pre_routing_factory.js

@@ -4,12 +4,11 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
-import { once } from 'lodash';
 import { wrapCustomError } from '../error_wrappers';
 import { LICENSE_STATUS_VALID } from '../../../../common/constants';
 
 export const licensePreRoutingFactory = (server, pluginId) => {
-  const licensePreRouting = () => {
+  return () => {
     // License checking and enable/disable logic
     const xpackMainPlugin = server.plugins.xpack_main;
     const licenseCheckResults = xpackMainPlugin.info.feature(pluginId).getLicenseCheckResults();
@@ -21,6 +20,4 @@ export const licensePreRoutingFactory = (server, pluginId) => {
 
     return null;
   };
-
-  return () => once(licensePreRouting)();
 };