59 lines
2.1 KiB
TypeScript
59 lines
2.1 KiB
TypeScript
import * as puppeteer from 'puppeteer';
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import { timeoutExecute } from 'puppeteer-cluster/dist/util';
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import logger from '../logger';
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import config from '../config';
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import ReusablePage, { RepairablePage } from './ReusablePage';
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const mempoolHost = config.MEMPOOL.HTTP_HOST + (config.MEMPOOL.HTTP_PORT ? ':' + config.MEMPOOL.HTTP_PORT : '');
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const mockImageBuffer = Buffer.from("iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVQYV2NgYAAAAAMAAWgmWQ0AAAAASUVORK5CYII=", 'base64');
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export default class ReusableSSRPage extends ReusablePage {
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public constructor(options: puppeteer.LaunchOptions, puppeteer: any) {
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super(options, puppeteer);
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}
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public async close() {
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await (this.browser as puppeteer.Browser).close();
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}
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protected async initPage(): Promise<RepairablePage> {
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const page = await (this.browser as puppeteer.Browser).newPage() as RepairablePage;
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page.clusterGroup = 'slurper';
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page.language = null;
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page.createdAt = Date.now();
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const defaultUrl = mempoolHost + '/preview/block/1';
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page.on('pageerror', (err) => {
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console.log(err);
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page.repairRequested = true;
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});
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await page.setRequestInterception(true);
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page.on('request', req => {
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if (req.isInterceptResolutionHandled()) {
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return req.continue();
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}
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if (req.resourceType() === 'image') {
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return req.respond({
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contentType: 'image/png',
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headers: {"Access-Control-Allow-Origin": "*"},
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body: mockImageBuffer
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});
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} else if (req.resourceType() === 'media') {
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return req.abort();
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} else {
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return req.continue();
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}
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});
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try {
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await page.goto(defaultUrl, { waitUntil: "networkidle0" });
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await page.waitForSelector('meta[property="og:meta:ready"]', { timeout: config.PUPPETEER.RENDER_TIMEOUT || 3000 });
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} catch (e) {
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logger.err(`failed to load frontend during ssr page initialization ${page.clusterGroup}:${page.index}: ` + (e instanceof Error ? e.message : `${e}`));
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page.repairRequested = true;
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}
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page.free = true;
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return page
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}
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}
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