openecomp-ui/proxy-server.js

   1 'use strict';
   2
   3 const proxy = require('http-proxy-middleware');
   4
   5 const devConfig = require('./tools/getDevConfig');
   6 let devPort = process.env.PORT || devConfig.port;
   7
   8 module.exports = function(server) {
   9     let cookieRules = devConfig.proxyConfig.cookieReplaceRules;
  10     let cookies = devConfig.proxyConfig.cookies;
  11     console.log('---------------------');
  12
  13     let proxyConfigDefaults = {
  14         changeOrigin: true,
  15         secure: false,
  16         onProxyRes: (proxyRes, req, res) => {
  17             let setCookie = proxyRes.headers['set-cookie'];
  18             if (setCookie) {
  19                 cookieRules.forEach(function(rule) {
  20                     setCookie[0] = setCookie[0].replace(
  21                         rule.replace,
  22                         rule.with
  23                     );
  24                 });
  25             }
  26             if (
  27                 proxyRes.statusCode === 302 &&
  28                 proxyRes.headers.location.indexOf(devConfig.proxyConfig.login) >
  29                     -1
  30             ) {
  31                 proxyRes.headers.location = `http://localhost:${devPort}/${
  32                     devConfig.proxyConfig.redirectionPath
  33                 }`;
  34                 let myCookies = [];
  35                 for (let cookie in cookies) {
  36                     myCookies.push(cookie + '=' + cookies[cookie]);
  37                 }
  38                 res.setHeader('Set-Cookie', myCookies);
  39             }
  40         }
  41     };
  42
  43     let middlewares = [
  44         (req, res, next) => {
  45             devConfig.proxyConfig.urlReplaceRules.forEach(function(rule) {
  46                 if (req.url.indexOf(rule.url) > -1) {
  47                     req.url = req.url.replace(rule.replace, rule.with);
  48                 }
  49             });
  50             devConfig.proxyConfig.jsReplaceRules.forEach(function(rule) {
  51                 let regex = new RegExp('^(.*)' + rule.replace);
  52                 let match = req.url.match(regex);
  53                 let newUrl = match && match[1] + rule.with + '.js';
  54                 if (newUrl) {
  55                     console.log(`REWRITING URL: ${req.url} -> ${newUrl}`);
  56                     req.url = newUrl;
  57                 }
  58             });
  59             next();
  60         }
  61     ];
  62
  63     let proxies = [];
  64
  65     // standalone back-end (proxyTarget) has higher priority, so it should be first
  66     if (devConfig.proxyTarget) {
  67         console.log('Onboarding proxy set to : ' + devConfig.proxyTarget);
  68         proxies.push({
  69             target: devConfig.proxyTarget,
  70             config: devConfig.proxyConfig.onboardingProxy
  71         });
  72     } else {
  73         console.log(
  74             'Onboarding proxy set to : ' + devConfig.proxyCatalogTarget
  75         );
  76     }
  77     console.log('Catalog proxy set to : ' + devConfig.proxyCatalogTarget);
  78     proxies.push({
  79         target: devConfig.proxyCatalogTarget,
  80         config: devConfig.proxyConfig.catalogProxy
  81     });
  82     proxies.forEach(function(p) {
  83         middlewares.push(
  84             proxy(
  85                 p.config.proxy,
  86                 Object.assign({}, proxyConfigDefaults, {
  87                     target: p.target,
  88                     pathRewrite: p.config.rewrite
  89                 })
  90             )
  91         );
  92     });
  93
  94     let websocketTarget = devConfig.proxyCatalogTarget;
  95     if (devConfig.proxyWebsocketTarget) {
  96         websocketTarget = devConfig.proxyWebsocketTarget;
  97     }
  98     console.log('Websocket proxy set to : ' + websocketTarget);
  99     console.log('---------------------');
 100     var wsProxy = proxy(
 101         devConfig.proxyConfig.websocketProxy.proxy,
 102         Object.assign({}, proxyConfigDefaults, {
 103             target: websocketTarget,
 104             ws: true
 105         })
 106     );
 107     middlewares.push(wsProxy);
 108
 109     server.use(middlewares);
 110     server.on('upgrade', wsProxy.upgrade);
 111 };