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import 'zone.js/dist/zone-node';
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import 'reflect-metadata';
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import { renderModuleFactory } from '@angular/platform-server';
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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 } 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 {Prometheus} from "./prometheus";
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import {Counter} from "prom-client";
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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 prometheus: Prometheus = new Prometheus();
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app.engine('html', (_, options, callback) => {
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let engine = ngExpressEngine({
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bootstrap: AppServerModuleNgFactory,
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providers: [
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{ provide: 'request', useFactory: () => options.req, deps: [] },
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provideModuleMap(LAZY_MODULE_MAP)
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]
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});
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engine(_, options, callback);
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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', prometheus.register.contentType);
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res.end(prometheus.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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let start = new Date();
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let counter: Counter = prometheus.counters.get(req.path);
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if(counter !== undefined) {
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counter.inc(1, new Date());
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res.render('index', { req });
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// event triggers when express is done sending response
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res.on('finish', function() {
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console.log(new Date().getTime() - start.getTime());
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});
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} else {
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res.render('index', { req });
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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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