Merge pull request #287 from dedis/setup-env-variable

feat: use env variables to configure setup

Author: lanterno

web/backend/config.env.template

@@ -6,6 +6,10 @@ FRONT_END_URL="https://dvoting-dev.dedis.ch:3000"
 # Proxy address of the default proxy
 DELA_NODE_URL="http://localhost:9081"
 
+# Backend server
+BACKEND_HOST="localhost"
+BACKEND_PORT="5000"
+
 # Secret used to create secure sessions
 SESSION_SECRET="session secret"
 
@@ -17,4 +21,6 @@ PRIVATE_KEY="28912721dfd507e198b31602fb67824856eb5a674c021d49fdccbe52f0234409"
 DB_PATH="./"
 # Database credentials
 DATABASE_USERNAME = "dvoting"
-DATABASE_PASSWORD = "dvoting"
+DATABASE_PASSWORD = "dvoting"
+DATABASE_PORT = 5432
+DATABASE_HOST = "localhost"

web/backend/src/Server.ts

@@ -48,8 +48,8 @@ let enf: Enforcer;
 async function initEnf() {
   const a = await SequelizeAdapter.newAdapter({
     dialect: 'postgres',
-    host: 'localhost',
-    port: 5432,
+    host: process.env.DATABASE_HOST,
+    port: parseInt(process.env.DATABASE_PORT || '5432', 10),
     username: process.env.DATABASE_USERNAME,
     password: process.env.DATABASE_PASSWORD,
     database: 'casbin',

web/frontend/src/setupProxy.js

@@ -3,7 +3,7 @@ const { createProxyMiddleware } = require('http-proxy-middleware');
 module.exports = function (app) {
   app.use(
     createProxyMiddleware('/api', {
-      target: 'http://localhost:5000',
+      target: `http://${process.env.BACKEND_HOST}:${process.env.BACKEND_PORT}`,
       changeOrigin: true,
       headers: {
         Connection: 'keep-alive',