Refactor #5025: Add env. vars. for graphql playground and introspection

Signed-off-by: Bruno Lehnen <[email protected]>

.env.example

@@ -1,3 +1,5 @@
+GRAPHQL_INTROSPECTION_ENABLED=true
+GRAPHQL_PLAYGROUND_ENABLED=true
 HYDRA_ADMIN_URL=http://hydra:4445
 HYDRA_OAUTH2_INTROSPECT_URL=http://hydra:4445/oauth2/introspect
 HYDRA_TOKEN_URL=http://hydra:4444/oauth2/token

imports/node-app/core/config.js

@@ -0,0 +1,7 @@
+import envalid, { bool } from "envalid";
+
+export default envalid.cleanEnv(process.env, {
+  GRAPHQL_INTROSPECTION_ENABLED: bool({ default: false }),
+  GRAPHQL_PLAYGROUND_ENABLED: bool({ default: false })
+});
+

imports/node-app/core/createApolloServer.js

@@ -2,6 +2,7 @@ import cors from "cors";
 import express from "express";
 import { makeExecutableSchema, mergeSchemas } from "apollo-server";
 import { ApolloServer } from "apollo-server-express";
+import config from "./config";
 import buildContext from "./util/buildContext";
 import getErrorFormatter from "./util/getErrorFormatter";
 import tokenMiddleware from "./util/tokenMiddleware";
@@ -59,7 +60,9 @@ export default function createApolloServer(options = {}) {
     schema,
     subscriptions: {
       path
-    }
+    },
+    introspection: config.GRAPHQL_INTROSPECTION_ENABLED,
+    playground: config.GRAPHQL_PLAYGROUND_ENABLED
   });
 
   // GraphQL endpoint, enhanced with JSON body parser