127 lines
3.5 KiB
TypeScript
127 lines
3.5 KiB
TypeScript
/*
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This file is part of GNU Taler
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(C) 2019 Taler Systems S.A.
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GNU Taler is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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SPDX-License-Identifier: AGPL3.0-or-later
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*/
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/**
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* Imports.
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*/
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import { Logger } from "@gnu-taler/taler-util";
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import { TalerError } from "./errors.js";
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import { encodeBody, getDefaultHeaders, HttpLibArgs } from "./http-common.js";
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import {
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Headers,
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HttpRequestLibrary,
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HttpRequestOptions,
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HttpResponse,
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} from "./http.js";
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import { RequestThrottler, TalerErrorCode, URL } from "./index.js";
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import { qjsOs } from "./qtart.js";
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const logger = new Logger("http-impl.qtart.ts");
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const textDecoder = new TextDecoder();
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/**
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* Implementation of the HTTP request library interface for node.
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*/
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export class HttpLibImpl implements HttpRequestLibrary {
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private throttle = new RequestThrottler();
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private throttlingEnabled = true;
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constructor(args?: HttpLibArgs) {
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this.throttlingEnabled = args?.enableThrottling ?? false;
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}
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/**
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* Set whether requests should be throttled.
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*/
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setThrottling(enabled: boolean): void {
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this.throttlingEnabled = enabled;
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}
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async fetch(url: string, opt?: HttpRequestOptions): Promise<HttpResponse> {
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const method = (opt?.method ?? "GET").toUpperCase();
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logger.trace(`Requesting ${method} ${url}`);
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const parsedUrl = new URL(url);
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if (this.throttlingEnabled && this.throttle.applyThrottle(url)) {
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throw TalerError.fromDetail(
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TalerErrorCode.WALLET_HTTP_REQUEST_THROTTLED,
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{
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requestMethod: method,
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requestUrl: url,
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throttleStats: this.throttle.getThrottleStats(url),
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},
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`request to origin ${parsedUrl.origin} was throttled`,
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);
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}
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let data: ArrayBuffer | undefined = undefined;
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const requestHeadersMap = { ...getDefaultHeaders(method), ...opt?.headers };
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let headersList: string[] = [];
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for (let headerName of Object.keys(requestHeadersMap)) {
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headersList.push(`${headerName}: ${requestHeadersMap[headerName]}`);
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}
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if (method === "POST") {
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data = encodeBody(opt?.body);
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}
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const res = await qjsOs.fetchHttp(url, {
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method,
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data,
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headers: headersList,
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});
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return {
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requestMethod: method,
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// FIXME: We don't return headers!
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headers: new Headers(),
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async bytes() {
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return res.data;
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},
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json() {
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const text = textDecoder.decode(res.data);
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return JSON.parse(text);
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},
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async text() {
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const text = textDecoder.decode(res.data);
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return text;
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},
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requestUrl: url,
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status: res.status,
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};
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}
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async get(url: string, opt?: HttpRequestOptions): Promise<HttpResponse> {
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return this.fetch(url, {
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method: "GET",
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...opt,
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});
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}
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async postJson(
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url: string,
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body: any,
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opt?: HttpRequestOptions,
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): Promise<HttpResponse> {
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return this.fetch(url, {
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method: "POST",
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body,
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...opt,
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});
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}
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}
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