Add Apollo Engine

I was trying to dig into why our dashboard loads pretty slowly, but
couldn't with the limited amount of information I had.

Enabling Apollo Engine again should make it possible to track
performance problems more granularly per-resolver again. (like Optics)

iris/package.json

@@ -1,6 +1,7 @@
 {
   "dependencies": {
     "algoliasearch": "^3.24.7",
+    "apollo-engine": "^0.8.3",
     "apollo-local-query": "^0.3.0",
     "apollo-upload-client": "^5.1.0",
     "apollo-upload-server": "^2.0.4",
@@ -61,6 +62,7 @@
     "moment": "^2.18.1",
     "node-env-file": "^0.1.8",
     "node-localstorage": "^1.3.0",
+    "now-env": "^3.0.1",
     "offline-plugin": "^4.8.4",
     "optics-agent": "^1.1.2",
     "passport": "^0.3.2",
@@ -112,8 +114,7 @@
     "sw-precache-webpack-plugin": "^0.11.4",
     "then-queue": "^1.3.0",
     "validator": "^9.0.0",
-    "web-push": "^3.2.2",
-    "now-env": "^3.0.1"
+    "web-push": "^3.2.2"
   },
   "scripts": {
     "start": "NODE_ENV=production node main.js"

iris/routes/api/graphql.js

@@ -12,4 +12,6 @@ export default graphqlExpress(req => ({
     user: req.user,
     loaders: createLoaders(),
   },
+  tracing: true,
+  cacheControl: true,
 }));

iris/routes/middlewares/engine.js

@@ -0,0 +1,13 @@
+// @flow
+import { Engine } from 'apollo-engine';
+
+export default new Engine({
+  graphqlPort: 3001,
+  endpoint: '/api',
+  engineConfig: {
+    logging: {
+      level: 'WARN',
+    },
+    apiKey: process.env.APOLLO_ENGINE_API_KEY,
+  },
+});

iris/routes/middlewares/index.js

@@ -7,6 +7,14 @@ if (process.env.NODE_ENV === 'development') {
   middlewares.use(logging);
 }
 
+// Start apollo engine
+if (process.env.NODE_ENV === 'production' && !process.env.FORCE_DEV) {
+  const engine = require('./engine').default;
+  console.log('Apollo Engine starting...');
+  engine.start();
+  middlewares.use(engine.expressMiddleware());
+}
+
 if (process.env.NODE_ENV === 'production' && !process.env.FORCE_DEV) {
   // Raven (Sentry client) needs to come before everything else
   const raven = require('shared/middlewares/raven').default;