mirror of
https://github.com/weaveworks/scope.git
synced 2026-03-03 18:20:27 +00:00
118 lines
3.2 KiB
JavaScript
118 lines
3.2 KiB
JavaScript
var express = require('express');
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var http = require('http');
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var httpProxy = require('http-proxy');
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var HttpProxyRules = require('http-proxy-rules');
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var url = require('url');
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var app = express();
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var BACKEND_HOST = process.env.BACKEND_HOST || 'localhost';
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var WEBPACK_SERVER_HOST = process.env.WEBPACK_SERVER_HOST || 'localhost';
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/************************************************************
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*
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* Proxy requests to:
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* - /api -> :4040/api
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*
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************************************************************/
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var backendProxy = httpProxy.createProxy({
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ws: true,
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target: 'http://' + BACKEND_HOST + ':4040'
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});
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backendProxy.on('error', function(err) {
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console.error('Proxy error', err);
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});
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app.all('/api*', backendProxy.web.bind(backendProxy));
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/************************************************************
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*
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* Production env serves precompiled content from build/
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*
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************************************************************/
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if (process.env.NODE_ENV === 'production') {
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app.use(express.static('build'));
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}
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/*************************************************************
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*
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* Webpack Dev Middleware with Hot Reload
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*
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* See: https://github.com/webpack/webpack-dev-middleware;
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* https://github.com/glenjamin/webpack-hot-middleware
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*
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*************************************************************/
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if (process.env.NODE_ENV !== 'production') {
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var webpack = require('webpack');
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var webpackMiddleware = require('webpack-dev-middleware');
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var webpackHotMiddleware = require('webpack-hot-middleware');
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var config = require('./webpack.local.config');
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var compiler = webpack(config);
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app.use(webpackMiddleware(compiler, {
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// required
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publicPath: config.output.publicPath,
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// options
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noInfo: true,
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stats: 'errors-only',
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}));
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app.use(webpackHotMiddleware(compiler));
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}
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/******************
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*
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* Express server
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*
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*****************/
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var port = process.env.PORT || 4042;
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var server = app.listen(port, function () {
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var host = server.address().address;
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var port = server.address().port;
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console.log('Scope UI listening at http://%s:%s', host, port);
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});
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server.on('upgrade', backendProxy.ws.bind(backendProxy));
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/*************************************************************
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*
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* Path proxy server
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*
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*************************************************************/
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var proxyRules = new HttpProxyRules({
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rules: {
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'/scoped/': 'http://localhost:' + port
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}
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});
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var pathProxy = httpProxy.createProxy({ws: true});
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pathProxy.on('error', function(err) { console.error('path proxy error', err); });
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var pathProxyPort = port + 1;
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const proxyPathServer = http.createServer(function(req, res) {
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var target = proxyRules.match(req);
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if (!target) {
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res.writeHead(500, {'Content-Type': 'text/plain'});
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res.end('No rules matched! Check out /scoped/');
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return;
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}
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return pathProxy.web(req, res, {target: target});
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}).listen(pathProxyPort, function() {
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var pathProxyHost = proxyPathServer.address().address;
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console.log('Scope Proxy Path UI listening at http://%s:%s/scoped/',
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pathProxyHost, pathProxyPort);
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});
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proxyPathServer.on('upgrade', function(req, socket, head) {
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var target = proxyRules.match(req);
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if (target) {
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return pathProxy.ws(req, socket, head, {target: target});
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}
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});
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