fix(server): wrap read-modify-write apis with distributed lock (#5979)

packages/backend/server/src/fundamentals/graphql/index.ts

@@ -11,6 +11,12 @@ import { GraphQLError } from 'graphql';
 import { Config } from '../config';
 import { GQLLoggerPlugin } from './logger-plugin';
 
+export type GraphqlContext = {
+  req: Request;
+  res: Response;
+  isAdminQuery: boolean;
+};
+
 @Global()
 @Module({
   imports: [
@@ -30,7 +36,13 @@ import { GQLLoggerPlugin } from './logger-plugin';
               : '../../../schema.gql'
           ),
           sortSchema: true,
-          context: ({ req, res }: { req: Request; res: Response }) => ({
+          context: ({
+            req,
+            res,
+          }: {
+            req: Request;
+            res: Response;
+          }): GraphqlContext => ({
             req,
             res,
             isAdminQuery: false,