Provide different credentials when running in cloud

app.js

@@ -2,17 +2,24 @@ const express = require('express');
 const redis = require('redis');
 const cookieParser = require('cookie-parser');
 const logger = require('morgan');
-
 const indexRouter = require('./routes/index');
 
+const services = isCloud() ?
+    require('./services.cloud') :
+    require('./services.local');
+
 const app = express();
-const redisClient = redis.createClient();
+const redisClient = redis.createClient(services.REDIS_OPTIONS);
 
 app.use(logger('dev'));
 app.use(express.json());
 app.use(express.urlencoded({ extended: false }));
 app.use(cookieParser());
 
-app.use('/', indexRouter(process.env.NASA_API_KEY, redisClient));
+app.use('/', indexRouter(services.NASA_API_KEY, redisClient));
 
 module.exports = app;
+
+function isCloud() {
+    return process.env.VCAP_SERVICES !== undefined;
+}

services.cloud.js

@@ -0,0 +1,26 @@
+const services = {
+    get NASA_API_KEY() {
+        const credentials = getVCAPServices()['credhub'][0]['credentials'];
+        return credentials['NASA_API_KEY'];
+    },
+
+    get REDIS_OPTIONS() {
+        const redisCredentials = getVCAPServices()['p.redis'][0]["credentials"];
+
+        const host = redisCredentials["host"];
+        const port = redisCredentials["port"];
+        const password = redisCredentials["password"];
+
+        return {
+            host,
+            port,
+            password
+        }
+    }
+};
+
+function getVCAPServices() {
+    return JSON.parse(process.env.VCAP_SERVICES);
+}
+
+module.exports = services;

services.local.js

@@ -0,0 +1,17 @@
+const services = {
+    get NASA_API_KEY() {
+        return process.env.NASA_API_KEY;
+    },
+
+    get REDIS_OPTIONS() {
+        const host = '127.0.0.1';
+        const port = 6379;
+
+        return {
+            host,
+            port
+        }
+    }
+};
+
+module.exports = services;