121 lines
3.4 KiB
TypeScript
121 lines
3.4 KiB
TypeScript
import 'zone.js/dist/zone-node';
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import 'reflect-metadata';
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import {enableProdMode} from '@angular/core';
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import * as express from 'express';
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import {join} from 'path';
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import {readFileSync} from 'fs';
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// Faster server renders w/ Prod mode (dev mode never needed)
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enableProdMode();
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// Express server
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const app = express();
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const PORT = process.env.PORT || 4000;
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const DIST_FOLDER = join(process.cwd(), 'dist');
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// Our index.html we'll use as our template
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const template = readFileSync(join(DIST_FOLDER, 'browser', 'index.html')).toString();
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// * NOTE :: leave this as require() since this file is built Dynamically from webpack
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const {AppServerModuleNgFactory, LAZY_MODULE_MAP} = require('./dist/server/main');
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// Express Engine
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import {ngExpressEngine, RenderOptions} from '@nguniversal/express-engine';
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// Import module map for lazy loading
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import {provideModuleMap} from '@nguniversal/module-map-ngfactory-loader';
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import {routes} from "./routes";
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import * as prom from "prom-client";
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import {REQUEST, RESPONSE} from "@nguniversal/express-engine/tokens";
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import {renderModuleFactory} from "@angular/platform-server";
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/*
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// Our Universal express-engine (found @ https://github.com/angular/universal/tree/master/modules/express-engine)
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app.engine('html', ngExpressEngine({
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bootstrap: AppServerModuleNgFactory,
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providers: [
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provideModuleMap(LAZY_MODULE_MAP)
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]
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}));
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*/
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// be able to get request and get domain from there
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const register = new prom.Registry();
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const responses = new prom.Counter({
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name: 'portal_http_responses_total',
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help: 'A counter for portal response codes for every existed or not existed pages.',
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labelNames: ['route', 'code'],
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registers: [register]
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});
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const histogram = new prom.Histogram({
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name: 'portal_http_request_duration_seconds',
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help: 'A Histogram for a portal. Providing information about page visits and load latency in seconds.',
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labelNames: ['route'],
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registers: [register],
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buckets: [0.1, 0.2, 0.5, 1, 2]
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});
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app.engine('html', (_, options: any, callback) => {
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const opts = {
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document: template,
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url: options.req.url,
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extraProviders: [
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provideModuleMap(LAZY_MODULE_MAP),
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{
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provide: REQUEST,
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useValue: options.req
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},
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{
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provide: RESPONSE,
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useValue: options.req.res,
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},
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]
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};
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renderModuleFactory(AppServerModuleNgFactory, opts)
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.then(html => callback(null, html)
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);
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});
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app.set('view engine', 'html');
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app.set('views', join(DIST_FOLDER, 'browser'));
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/* - Example Express Rest API endpoints -
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app.get('/api/**', (req, res) => { });
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*/
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// Server static files from /browser
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app.get('*.*', express.static(join(DIST_FOLDER, 'browser'), {
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maxAge: '1y'
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}));
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app.get('/metrics', (req, res) => {
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res.set('Content-Type', register.contentType);
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res.end(register.metrics());
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});
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// All regular routes use the Universal engine
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app.get('*', (req, res) => {
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if (routes.indexOf(req.path) !== -1) {
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const end = histogram.startTimer({route: req.path});
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res.render('index', {req});
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res.on('finish', function () {
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responses.inc({route: req.path, code: res.statusCode});
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end();
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});
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} else {
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res.render('index', {req});
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res.on('finish', function () {
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responses.inc({route: req.path, code: res.statusCode});
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});
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}
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});
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// Start up the Node server
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app.listen(PORT, () => {
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console.log(`Node Express server listening on http://localhost:${PORT}`);
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});
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