111 lines
3.3 KiB
TypeScript
111 lines
3.3 KiB
TypeScript
import 'zone.js/node';
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import { ngExpressEngine } from '@nguniversal/express-engine';
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import * as express from 'express';
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import * as compression from 'compression';
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import { join } from 'path';
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import { AppServerModule } from './src/main.server';
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import { APP_BASE_HREF } from '@angular/common';
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import { existsSync } from 'fs';
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import {Prometheus} from "./prometheus";
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import {Counter} from "prom-client";
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import {REQUEST, RESPONSE} from "./src/app/openaireLibrary/utils/tokens";
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// The Express app is exported so that it can be used by serverless Functions.
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export function app() {
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const server = express();
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server.use(compression());
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const distFolder = join(process.cwd(), 'dist/aggregator/browser');
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const indexHtml = existsSync(join(distFolder, 'index.original.html')) ? 'index.original.html' : 'index';
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const prometheus: Prometheus = new Prometheus();
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// Our Universal express-engine (found @ https://github.com/angular/universal/tree/master/modules/express-engine)
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server.engine('html', ngExpressEngine({
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bootstrap: AppServerModule,
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inlineCriticalCss: false
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}));
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server.set('view engine', 'html');
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server.set('views', distFolder);
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// Example Express Rest API endpoints
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// server.get('/api/**', (req, res) => { });
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// Serve static files from /browser
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server.get('*.*', express.static(distFolder, {
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maxAge: '1y'
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}));
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server.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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server.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(indexHtml, {
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req, providers: [
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{
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provide: APP_BASE_HREF,
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useValue: req.baseUrl
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},
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{
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provide: REQUEST, useValue: (req)
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},
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{
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provide: RESPONSE, useValue: (res)
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}
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]
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});
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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(indexHtml, {
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req, providers: [
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{
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provide: APP_BASE_HREF,
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useValue: req.baseUrl
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},
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{
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provide: REQUEST, useValue: (req)
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},
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{
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provide: RESPONSE, useValue: (res)
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}
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]
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});
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}
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});
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return server;
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}
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function run() {
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const port = process.env.PORT || 4000;
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// Start up the Node server
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const server = app();
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server.listen(port, () => {
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console.log(`Node Express server listening on http://localhost:${port}`);
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});
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}
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// Webpack will replace 'require' with '__webpack_require__'
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// '__non_webpack_require__' is a proxy to Node 'require'
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// The below code is to ensure that the server is run only when not requiring the bundle.
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declare const __non_webpack_require__: NodeRequire;
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const mainModule = __non_webpack_require__.main;
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const moduleFilename = mainModule && mainModule.filename || '';
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if (moduleFilename === __filename || moduleFilename.includes('iisnode')) {
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run();
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}
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export * from './src/main.server';
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