bedetheque-scraper/dist/lib/proxy-fetcher.js

NodeJS script to scrap the entire database of dbgest.com / bedetheque.com (approx. 260.000+ albums)

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __generator = (this && this.__generator) || function (thisArg, body) {
    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
    function verb(n) { return function (v) { return step([n, v]); }; }
    function step(op) {
        if (f) throw new TypeError("Generator is already executing.");
        while (_) try {
            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
            if (y = 0, t) op = [op[0] & 2, t.value];
            switch (op[0]) {
                case 0: case 1: t = op; break;
                case 4: _.label++; return { value: op[1], done: false };
                case 5: _.label++; y = op[1]; op = [0]; continue;
                case 7: op = _.ops.pop(); _.trys.pop(); continue;
                default:
                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
                    if (t[2]) _.ops.pop();
                    _.trys.pop(); continue;
            }
            op = body.call(thisArg, _);
        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
    }
};
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
    result["default"] = mod;
    return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var cheerio = __importStar(require("cheerio"));
var lodash_1 = __importDefault(require("lodash"));
var axios_https_proxy_fix_1 = __importDefault(require("axios-https-proxy-fix"));
var message_1 = require("./message");
var ProxyFetcher = /** @class */ (function () {
    function ProxyFetcher() {
    }
    ProxyFetcher.getFreeProxyList = function (timeout) {
        return __awaiter(this, void 0, void 0, function () {
            var list;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0:
                        message_1.Message.searchingFreeProxiesList(timeout);
                        return [4 /*yield*/, axios_https_proxy_fix_1.default
                                .get("https://proxyscrape.com/proxies/HTTP_" + timeout + "ms_Timeout_Proxies.txt")
                                .then(function (response) { return response.data.trim().split('\r\n')
                                .map(function (p) { return ({ host: p.split(':')[0], port: parseInt(p.split(':')[1], 10) }); }); })];
                    case 1:
                        list = _a.sent();
                        message_1.Message.foundFreeProxiesList(list, timeout);
                        return [2 /*return*/, list];
                }
            });
        });
    };
    ProxyFetcher.requestProxy = function (list, urlRaw, nbrRetry) {
        if (nbrRetry === void 0) { nbrRetry = 5; }
        return __awaiter(this, void 0, void 0, function () {
            var url, proxy;
            var _this = this;
            return __generator(this, function (_a) {
                if (nbrRetry === 0) {
                    return [2 /*return*/, null];
                }
                url = encodeURI(urlRaw);
                proxy = this.getRandomProxy(list);
                return [2 /*return*/, this.timeoutRequest(60000, axios_https_proxy_fix_1.default.get(url, { proxy: proxy }))
                        .then(function (result) { return cheerio.load(result.data); })
                        .catch(function (error) {
                        console.log("retry: " + nbrRetry + " - " + url + " " + (error.message || error.code || error));
                        var newNbrRetry = nbrRetry - 1;
                        return _this.requestProxy(list, url, newNbrRetry);
                    })];
            });
        });
    };
    ProxyFetcher.getRandomProxy = function (list) {
        var indexProxy = lodash_1.default.random(list.length - 1);
        return list[indexProxy];
    };
    ProxyFetcher.timeoutRequest = function (ms, promise) {
        return new Promise((function (resolve, reject) {
            setTimeout(function () { reject(new Error('timeout')); }, ms);
            promise.then(resolve, reject);
        }));
    };
    return ProxyFetcher;
}());
exports.ProxyFetcher = ProxyFetcher;