376 lines
9.0 KiB
Markdown
376 lines
9.0 KiB
Markdown
Fresh Scraper
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```javascript
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const Scraper = require('../helpers/scraper');
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const cheerio = require('cheerio');
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const path = require('path');
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const jsonfile = require('jsonfile');
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const logger = require('log4js').getLogger('LV');
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const url = require('url');
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const removeAccents = require('remove-accents-diacritics');
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logger.level = process.env.LOGGER_LEVEL || 'warn';
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class LVScrape extends Scraper {
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constructor() {
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super();
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this.id = 'LV';
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this.on('done', () => {
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this._done();
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});
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this.run = this._throttle(async () => {
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await this.__run();
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}, 5000);
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if (process.env.NODE_ENV === 'production')
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this._checkLock().then((l) => {
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if(l)
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this.run();
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});
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}
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/**
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*
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* @param serviceObject
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* @returns {Promise<void>}
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*/
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async processEntityDetails(serviceObject) {
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await this._randomWait(this.page, 3, 5);
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serviceObject.links[serviceObject.step].filename = `${filename}.json`;
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serviceObject.step++;
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if (serviceObject.step < serviceObject.items) {
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const newUrl = serviceObject.links[serviceObject.step].href;
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await this._goto(newUrl);
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}
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else
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this.emit('serviceDone');
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}
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/**
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*
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* @returns {Promise<void>}
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*/
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async indexRedirector() {
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switch (this.mode) {
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case 0:
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await this.buildIndex(this.paymentServices);
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break;
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case 1:
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await this.buildIndex(this.emoneyServices);
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break;
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case 2:
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await this.buildIndex(this.creditServices);
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break;
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}
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}
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/**
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*
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* @returns {Promise<void>}
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*/
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async processRedirector() {
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switch (this.mode) {
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case 0:
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await this.processEntityDetails(this.paymentServices);
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break;
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case 1:
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await this.processEntityDetails(this.emoneyServices);
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break;
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case 2:
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await this.processEntityDetails(this.creditServices);
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break;
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}
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}
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async processNewPage() {
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// give the page a few seconds to settle
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await this._randomWait(this.page, 3, 5);
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const pageUrl = url.parse(await this.page.url());
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if (pageUrl.href === 'chrome-error://chromewebdata/') {
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logger.warn('Directed to: chrome-error://chromewebdata/');
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this.emit('recover');
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return;
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}
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switch (pageUrl.pathname) {
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case '/en/our-registers/company-register/':
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await this.indexRedirector();
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break;
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case '/en/our-registers/company-register/details':
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await this.processRedirector();
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break;
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case '/en/our-registers/company-register/gransoverskridandehandel/':
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await this.crossBorderRedirector();
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break;
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default:
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if (process.env.NODE_ENV) {
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await this._uploadError();
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throw new Error(`Unknown page: ${pageUrl}`);
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}
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else {
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logger.warn('processNewPage Fell through');
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logger.warn('currentPage.location', pageUrl);
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}
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break;
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}
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}
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/**
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*
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* @returns {Promise<void>}
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*/
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async attachEvents() {
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this.on('serviceDone', async () => {
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switch (this.mode) {
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case 0:
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this.emit('paymentServicesDone');
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break;
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case 1:
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this.emit('emoneyServicesDone');
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break;
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case 2:
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this.emit('creditServicesDone');
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break;
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}
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});
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this.on('psindexdone', async () => {
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let newUrl;
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this.paymentServices.items = this.paymentServices.links.length;
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logger.info(`${this.paymentServices.items} items indexed`);
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this.paymentServices.indexStep++;
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if (this.paymentServices.indexStep >= this.paymentServices.urls.length)
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newUrl = this.paymentServices.links[this.paymentServices.step].href;
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else
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newUrl = this.paymentServices.urls[this.paymentServices.indexStep];
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await this._goto(newUrl);
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});
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this.on('emindexdone', async () => {
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let newUrl;
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this.emoneyServices.items = this.emoneyServices.links.length;
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logger.info(`${this.emoneyServices.items} items indexed`);
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this.emoneyServices.indexStep++;
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if (this.emoneyServices.indexStep >= this.emoneyServices.urls.length)
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newUrl = this.emoneyServices.links[this.emoneyServices.step].href;
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else
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newUrl = this.emoneyServices.urls[this.emoneyServices.indexStep];
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await this._goto(newUrl);
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});
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this.on('ciindexdone', async () => {
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let newUrl;
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this.creditServices.items = this.creditServices.links.length;
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logger.info(`${this.creditServices.items} items indexed`);
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this.creditServices.indexStep++;
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if (this.creditServices.indexStep >= this.creditServices.urls.length)
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newUrl = this.creditServices.links[this.creditServices.step].href;
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else
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newUrl = this.creditServices.urls[this.creditServices.indexStep];
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await this._goto(newUrl);
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});
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this.on('indexdone', async () => {
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switch (this.mode) {
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case 0:
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this.emit('psindexdone');
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break;
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case 1:
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this.emit('emindexdone');
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break;
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case 2:
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this.emit('ciindexdone');
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break;
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}
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});
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this.on('paymentServicesDone', async () => {
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logger.warn('paymentServicesDone');
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try{
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this.paymentServices.done = true;
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jsonfile.writeFileSync(`${this.path}/paymentServices.json`, { 'links': this.paymentServices.links });
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jsonfile.writeFileSync(`${this.debugPath}/paymentServices.json`, this.paymentServices);
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this.mode++;
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this.inProgress = false;
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await this._goto(this.emoneyServices.urls[0]);
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}
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catch (e) {
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logger.error(e);
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}
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});
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this.on('emoneyServicesDone', async () => {
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logger.warn('emoneyServicesDone');
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try{
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this.emoneyServices.done = true;
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jsonfile.writeFileSync(`${this.path}/emoneyServices.json`, { 'links':this.emoneyServices.links });
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jsonfile.writeFileSync(`${this.debugPath}/emoneyServices.json`, this.emoneyServices);
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this.mode++;
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this.inProgress = false;
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await this._goto(this.creditServices.urls[0]);
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}
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catch (e) {
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logger.error(e);
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}
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});
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this.on('creditServicesDone', async () => {
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logger.warn('creditServicesDone');
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try{
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this.creditServices.done = true;
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jsonfile.writeFileSync(`${this.path}/creditServices.json`, { 'links':this.creditServices.links });
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jsonfile.writeFileSync(`${this.debugPath}/creditServices.json`, this.creditServices);
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this.mode++;
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this.inProgress = false;
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this.emit('done');
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}
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catch (e) {
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logger.error(e);
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}
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});
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}
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/**
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*
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* @returns {Promise<void>}
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*/
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async start() {
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super._start();
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try {
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this.mode = 0;
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this.rootURI = 'http://www.fktk.lv';
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this.paymentServices = {
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'items': 0,
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'links': [],
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'step': 0,
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'indexStep': 0,
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'visited': false,
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'done' : false,
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'urls': ['http://www.fktk.lv/en/market/payment-institutions/authorized-payment-institutions.html', 'http://www.fktk.lv/en/market/payment-institutions/registered-payment-institutions.html'],
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'sections' : [],
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'sectionLinks' : []
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};
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this.emoneyServices = {
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'items': 0,
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'links': [],
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'step': 0,
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'indexStep': 0,
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'visited': false,
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'done' : false,
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'urls': ['http://www.fktk.lv/en/market/electronic-money-institutions/authorized-electronic-money-institutions.html', 'http://www.fktk.lv/en/market/electronic-money-institutions/registered-electronic-money-institutions.html'],
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'sections' : [],
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'sectionLinks' : []
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};
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this.creditServices = {
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'items': 0,
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'links': [],
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'step': 0,
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'indexStep': 0,
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'visited': false,
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'done' : false,
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'searchDone' : false,
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'started': false,
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'urls': ['http://www.fktk.lv/en/market/credit-institutions/banks.html'],
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'sections' : [],
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'sectionLinks' : []
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};
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this.startPage = this.paymentServices.urls[0];
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this.emoneyUrl = this.emoneyServices.urls[0];
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this.credit = this.creditServices.urls[0];
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this.setPath(path.resolve(`${__dirname }/../artefacts/LV/FCMC`));
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await this._doNonRepudiation().catch((err) => {
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logger.warn(err);
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});
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await this._initBrowser();
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await this._createBrowserPage();
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this.page.on('domcontentloaded', this._throttle(async () => {
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this.processNewPage().catch((err) => {
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logger.error('processNewPage fail', err);
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});
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}, 2500));
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if (this.eventNames().length === 2)
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await this.attachEvents();
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//
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await this.page.setViewport({ 'width': 1200, 'height': 800 });
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await this._goto(this.startPage, { 'waitUntil':'networkidle0' });
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await this._randomWait(this.page, 3, 5);
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}
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catch(e) {
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throw new Error(e);
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}
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}
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async __run() {
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await this.start();
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}
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}
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module.exports = LVScrape;
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```
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