put platform-independent stuff in http-common.ts
This commit is contained in:
parent
8e78bf73a0
commit
08b120bc8d
@ -16,8 +16,335 @@
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SPDX-License-Identifier: AGPL3.0-or-later
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*/
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import { CancellationToken } from "./CancellationToken.js";
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import { Codec } from "./codec.js";
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import { j2s } from "./helpers.js";
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import { TalerError, makeErrorDetail } from "./index.js";
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import { Logger } from "./logging.js";
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import { TalerErrorCode } from "./taler-error-codes.js";
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import { Duration, AbsoluteTime } from "./time.js";
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import { TalerErrorDetail } from "./wallet-types.js";
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const textEncoder = new TextEncoder();
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const logger = new Logger("http.ts");
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/**
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* An HTTP response that is returned by all request methods of this library.
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*/
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export interface HttpResponse {
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requestUrl: string;
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requestMethod: string;
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status: number;
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headers: Headers;
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json(): Promise<any>;
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text(): Promise<string>;
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bytes(): Promise<ArrayBuffer>;
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}
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export const DEFAULT_REQUEST_TIMEOUT_MS = 60000;
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export interface HttpRequestOptions {
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method?: "POST" | "PUT" | "GET";
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headers?: { [name: string]: string };
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/**
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* Timeout after which the request should be aborted.
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*/
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timeout?: Duration;
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/**
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* Cancellation token that should abort the request when
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* cancelled.
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*/
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cancellationToken?: CancellationToken;
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body?: string | ArrayBuffer | Record<string, unknown>;
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}
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/**
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* Headers, roughly modeled after the fetch API's headers object.
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*/
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export class Headers {
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private headerMap = new Map<string, string>();
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get(name: string): string | null {
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const r = this.headerMap.get(name.toLowerCase());
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if (r) {
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return r;
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}
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return null;
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}
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set(name: string, value: string): void {
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const normalizedName = name.toLowerCase();
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const existing = this.headerMap.get(normalizedName);
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if (existing !== undefined) {
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this.headerMap.set(normalizedName, existing + "," + value);
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} else {
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this.headerMap.set(normalizedName, value);
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}
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}
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toJSON(): any {
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const m: Record<string, string> = {};
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this.headerMap.forEach((v, k) => (m[k] = v));
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return m;
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}
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}
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/**
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* Interface for the HTTP request library used by the wallet.
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*
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* The request library is bundled into an interface to make mocking and
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* request tunneling easy.
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*/
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export interface HttpRequestLibrary {
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/**
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* Make an HTTP GET request.
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*
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* FIXME: Get rid of this, we want the API surface to be minimal.
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*/
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get(url: string, opt?: HttpRequestOptions): Promise<HttpResponse>;
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/**
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* Make an HTTP POST request with a JSON body.
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*
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* FIXME: Get rid of this, we want the API surface to be minimal.
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*/
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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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/**
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* Make an HTTP POST request with a JSON body.
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*/
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fetch(url: string, opt?: HttpRequestOptions): Promise<HttpResponse>;
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}
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type TalerErrorResponse = {
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code: number;
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} & unknown;
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type ResponseOrError<T> =
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| { isError: false; response: T }
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| { isError: true; talerErrorResponse: TalerErrorResponse };
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export async function readTalerErrorResponse(
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httpResponse: HttpResponse,
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): Promise<TalerErrorDetail> {
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const errJson = await httpResponse.json();
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const talerErrorCode = errJson.code;
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if (typeof talerErrorCode !== "number") {
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logger.warn(
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`malformed error response (status ${httpResponse.status}): ${j2s(
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errJson,
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)}`,
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);
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throw TalerError.fromDetail(
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TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE,
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{
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requestUrl: httpResponse.requestUrl,
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requestMethod: httpResponse.requestMethod,
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httpStatusCode: httpResponse.status,
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},
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"Error response did not contain error code",
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);
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}
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return errJson;
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}
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export async function readUnexpectedResponseDetails(
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httpResponse: HttpResponse,
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): Promise<TalerErrorDetail> {
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const errJson = await httpResponse.json();
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const talerErrorCode = errJson.code;
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if (typeof talerErrorCode !== "number") {
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return makeErrorDetail(
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TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE,
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{
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requestUrl: httpResponse.requestUrl,
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requestMethod: httpResponse.requestMethod,
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httpStatusCode: httpResponse.status,
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},
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"Error response did not contain error code",
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);
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}
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return makeErrorDetail(
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TalerErrorCode.WALLET_UNEXPECTED_REQUEST_ERROR,
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{
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requestUrl: httpResponse.requestUrl,
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requestMethod: httpResponse.requestMethod,
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httpStatusCode: httpResponse.status,
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errorResponse: errJson,
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},
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`Unexpected HTTP status (${httpResponse.status}) in response`,
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);
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}
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export async function readSuccessResponseJsonOrErrorCode<T>(
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httpResponse: HttpResponse,
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codec: Codec<T>,
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): Promise<ResponseOrError<T>> {
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if (!(httpResponse.status >= 200 && httpResponse.status < 300)) {
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return {
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isError: true,
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talerErrorResponse: await readTalerErrorResponse(httpResponse),
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};
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}
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const respJson = await httpResponse.json();
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let parsedResponse: T;
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try {
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parsedResponse = codec.decode(respJson);
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} catch (e: any) {
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throw TalerError.fromDetail(
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TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE,
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{
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requestUrl: httpResponse.requestUrl,
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requestMethod: httpResponse.requestMethod,
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httpStatusCode: httpResponse.status,
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validationError: e.toString(),
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},
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"Response invalid",
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);
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}
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return {
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isError: false,
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response: parsedResponse,
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};
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}
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type HttpErrorDetails = {
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requestUrl: string;
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requestMethod: string;
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httpStatusCode: number;
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};
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export function getHttpResponseErrorDetails(
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httpResponse: HttpResponse,
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): HttpErrorDetails {
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return {
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requestUrl: httpResponse.requestUrl,
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requestMethod: httpResponse.requestMethod,
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httpStatusCode: httpResponse.status,
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};
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}
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export function throwUnexpectedRequestError(
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httpResponse: HttpResponse,
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talerErrorResponse: TalerErrorResponse,
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): never {
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throw TalerError.fromDetail(
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TalerErrorCode.WALLET_UNEXPECTED_REQUEST_ERROR,
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{
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requestUrl: httpResponse.requestUrl,
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requestMethod: httpResponse.requestMethod,
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httpStatusCode: httpResponse.status,
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errorResponse: talerErrorResponse,
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},
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`Unexpected HTTP status ${httpResponse.status} in response`,
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);
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}
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export async function readSuccessResponseJsonOrThrow<T>(
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httpResponse: HttpResponse,
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codec: Codec<T>,
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): Promise<T> {
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const r = await readSuccessResponseJsonOrErrorCode(httpResponse, codec);
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if (!r.isError) {
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return r.response;
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}
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throwUnexpectedRequestError(httpResponse, r.talerErrorResponse);
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}
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export async function readSuccessResponseTextOrErrorCode<T>(
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httpResponse: HttpResponse,
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): Promise<ResponseOrError<string>> {
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if (!(httpResponse.status >= 200 && httpResponse.status < 300)) {
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const errJson = await httpResponse.json();
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const talerErrorCode = errJson.code;
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if (typeof talerErrorCode !== "number") {
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throw TalerError.fromDetail(
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TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE,
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{
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httpStatusCode: httpResponse.status,
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requestUrl: httpResponse.requestUrl,
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requestMethod: httpResponse.requestMethod,
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},
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"Error response did not contain error code",
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);
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}
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return {
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isError: true,
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talerErrorResponse: errJson,
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};
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}
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const respJson = await httpResponse.text();
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return {
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isError: false,
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response: respJson,
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};
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}
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export async function checkSuccessResponseOrThrow(
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httpResponse: HttpResponse,
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): Promise<void> {
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if (!(httpResponse.status >= 200 && httpResponse.status < 300)) {
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const errJson = await httpResponse.json();
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const talerErrorCode = errJson.code;
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if (typeof talerErrorCode !== "number") {
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throw TalerError.fromDetail(
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TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE,
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{
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httpStatusCode: httpResponse.status,
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requestUrl: httpResponse.requestUrl,
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requestMethod: httpResponse.requestMethod,
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},
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"Error response did not contain error code",
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);
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}
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throwUnexpectedRequestError(httpResponse, errJson);
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}
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}
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export async function readSuccessResponseTextOrThrow<T>(
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httpResponse: HttpResponse,
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): Promise<string> {
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const r = await readSuccessResponseTextOrErrorCode(httpResponse);
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if (!r.isError) {
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return r.response;
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}
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throwUnexpectedRequestError(httpResponse, r.talerErrorResponse);
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}
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/**
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* Get the timestamp at which the response's content is considered expired.
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*/
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export function getExpiry(
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httpResponse: HttpResponse,
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opt: { minDuration?: Duration },
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): AbsoluteTime {
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const expiryDateMs = new Date(
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httpResponse.headers.get("expiry") ?? "",
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).getTime();
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let t: AbsoluteTime;
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if (Number.isNaN(expiryDateMs)) {
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t = AbsoluteTime.now();
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} else {
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t = {
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t_ms: expiryDateMs,
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};
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}
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if (opt.minDuration) {
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const t2 = AbsoluteTime.addDuration(AbsoluteTime.now(), opt.minDuration);
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return AbsoluteTime.max(t, t2);
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}
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return t;
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}
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export interface HttpLibArgs {
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enableThrottling?: boolean,
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}
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@ -24,337 +24,13 @@
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/**
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* Imports
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*/
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import {
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Logger,
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Duration,
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AbsoluteTime,
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TalerErrorDetail,
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Codec,
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j2s,
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CancellationToken,
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} from "@gnu-taler/taler-util";
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import { TalerErrorCode } from "@gnu-taler/taler-util";
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import { makeErrorDetail, TalerError } from "./errors.js";
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import * as impl from "#http-impl";
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import { HttpLibArgs } from "./http-common.js";
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import * as common from "./http-common.js";
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const logger = new Logger("http.ts");
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export * from "./http-common.js";
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/**
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* An HTTP response that is returned by all request methods of this library.
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*/
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export interface HttpResponse {
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requestUrl: string;
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requestMethod: string;
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status: number;
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headers: Headers;
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json(): Promise<any>;
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text(): Promise<string>;
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bytes(): Promise<ArrayBuffer>;
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}
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export const DEFAULT_REQUEST_TIMEOUT_MS = 60000;
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export interface HttpRequestOptions {
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method?: "POST" | "PUT" | "GET";
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headers?: { [name: string]: string };
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/**
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* Timeout after which the request should be aborted.
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*/
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timeout?: Duration;
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/**
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* Cancellation token that should abort the request when
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* cancelled.
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*/
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cancellationToken?: CancellationToken;
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body?: string | ArrayBuffer | Record<string, unknown>;
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}
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/**
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* Headers, roughly modeled after the fetch API's headers object.
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*/
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export class Headers {
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private headerMap = new Map<string, string>();
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get(name: string): string | null {
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const r = this.headerMap.get(name.toLowerCase());
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if (r) {
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return r;
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}
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return null;
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}
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set(name: string, value: string): void {
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const normalizedName = name.toLowerCase();
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const existing = this.headerMap.get(normalizedName);
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if (existing !== undefined) {
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this.headerMap.set(normalizedName, existing + "," + value);
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} else {
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this.headerMap.set(normalizedName, value);
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}
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}
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toJSON(): any {
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const m: Record<string, string> = {};
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this.headerMap.forEach((v, k) => (m[k] = v));
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return m;
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}
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}
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/**
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* Interface for the HTTP request library used by the wallet.
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*
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* The request library is bundled into an interface to make mocking and
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* request tunneling easy.
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*/
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export interface HttpRequestLibrary {
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/**
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* Make an HTTP GET request.
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*
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* FIXME: Get rid of this, we want the API surface to be minimal.
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*/
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get(url: string, opt?: HttpRequestOptions): Promise<HttpResponse>;
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/**
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* Make an HTTP POST request with a JSON body.
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*
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* FIXME: Get rid of this, we want the API surface to be minimal.
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*/
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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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/**
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* Make an HTTP POST request with a JSON body.
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*/
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fetch(url: string, opt?: HttpRequestOptions): Promise<HttpResponse>;
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}
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type TalerErrorResponse = {
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code: number;
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} & unknown;
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type ResponseOrError<T> =
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| { isError: false; response: T }
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| { isError: true; talerErrorResponse: TalerErrorResponse };
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export async function readTalerErrorResponse(
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httpResponse: HttpResponse,
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): Promise<TalerErrorDetail> {
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const errJson = await httpResponse.json();
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const talerErrorCode = errJson.code;
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if (typeof talerErrorCode !== "number") {
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logger.warn(
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`malformed error response (status ${httpResponse.status}): ${j2s(
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errJson,
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)}`,
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);
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throw TalerError.fromDetail(
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TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE,
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{
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requestUrl: httpResponse.requestUrl,
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requestMethod: httpResponse.requestMethod,
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httpStatusCode: httpResponse.status,
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},
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"Error response did not contain error code",
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);
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}
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return errJson;
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}
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export async function readUnexpectedResponseDetails(
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httpResponse: HttpResponse,
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): Promise<TalerErrorDetail> {
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const errJson = await httpResponse.json();
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const talerErrorCode = errJson.code;
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if (typeof talerErrorCode !== "number") {
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return makeErrorDetail(
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TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE,
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{
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requestUrl: httpResponse.requestUrl,
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requestMethod: httpResponse.requestMethod,
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httpStatusCode: httpResponse.status,
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},
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"Error response did not contain error code",
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);
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}
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return makeErrorDetail(
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TalerErrorCode.WALLET_UNEXPECTED_REQUEST_ERROR,
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{
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requestUrl: httpResponse.requestUrl,
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requestMethod: httpResponse.requestMethod,
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httpStatusCode: httpResponse.status,
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errorResponse: errJson,
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},
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`Unexpected HTTP status (${httpResponse.status}) in response`,
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);
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}
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export async function readSuccessResponseJsonOrErrorCode<T>(
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httpResponse: HttpResponse,
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codec: Codec<T>,
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): Promise<ResponseOrError<T>> {
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if (!(httpResponse.status >= 200 && httpResponse.status < 300)) {
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return {
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isError: true,
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talerErrorResponse: await readTalerErrorResponse(httpResponse),
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};
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}
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const respJson = await httpResponse.json();
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let parsedResponse: T;
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try {
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parsedResponse = codec.decode(respJson);
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} catch (e: any) {
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throw TalerError.fromDetail(
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TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE,
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{
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requestUrl: httpResponse.requestUrl,
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requestMethod: httpResponse.requestMethod,
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httpStatusCode: httpResponse.status,
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validationError: e.toString(),
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},
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"Response invalid",
|
||||
);
|
||||
}
|
||||
return {
|
||||
isError: false,
|
||||
response: parsedResponse,
|
||||
};
|
||||
}
|
||||
|
||||
type HttpErrorDetails = {
|
||||
requestUrl: string;
|
||||
requestMethod: string;
|
||||
httpStatusCode: number;
|
||||
};
|
||||
|
||||
export function getHttpResponseErrorDetails(
|
||||
httpResponse: HttpResponse,
|
||||
): HttpErrorDetails {
|
||||
return {
|
||||
requestUrl: httpResponse.requestUrl,
|
||||
requestMethod: httpResponse.requestMethod,
|
||||
httpStatusCode: httpResponse.status,
|
||||
};
|
||||
}
|
||||
|
||||
export function throwUnexpectedRequestError(
|
||||
httpResponse: HttpResponse,
|
||||
talerErrorResponse: TalerErrorResponse,
|
||||
): never {
|
||||
throw TalerError.fromDetail(
|
||||
TalerErrorCode.WALLET_UNEXPECTED_REQUEST_ERROR,
|
||||
{
|
||||
requestUrl: httpResponse.requestUrl,
|
||||
requestMethod: httpResponse.requestMethod,
|
||||
httpStatusCode: httpResponse.status,
|
||||
errorResponse: talerErrorResponse,
|
||||
},
|
||||
`Unexpected HTTP status ${httpResponse.status} in response`,
|
||||
);
|
||||
}
|
||||
|
||||
export async function readSuccessResponseJsonOrThrow<T>(
|
||||
httpResponse: HttpResponse,
|
||||
codec: Codec<T>,
|
||||
): Promise<T> {
|
||||
const r = await readSuccessResponseJsonOrErrorCode(httpResponse, codec);
|
||||
if (!r.isError) {
|
||||
return r.response;
|
||||
}
|
||||
throwUnexpectedRequestError(httpResponse, r.talerErrorResponse);
|
||||
}
|
||||
|
||||
export async function readSuccessResponseTextOrErrorCode<T>(
|
||||
httpResponse: HttpResponse,
|
||||
): Promise<ResponseOrError<string>> {
|
||||
if (!(httpResponse.status >= 200 && httpResponse.status < 300)) {
|
||||
const errJson = await httpResponse.json();
|
||||
const talerErrorCode = errJson.code;
|
||||
if (typeof talerErrorCode !== "number") {
|
||||
throw TalerError.fromDetail(
|
||||
TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE,
|
||||
{
|
||||
httpStatusCode: httpResponse.status,
|
||||
requestUrl: httpResponse.requestUrl,
|
||||
requestMethod: httpResponse.requestMethod,
|
||||
},
|
||||
"Error response did not contain error code",
|
||||
);
|
||||
}
|
||||
return {
|
||||
isError: true,
|
||||
talerErrorResponse: errJson,
|
||||
};
|
||||
}
|
||||
const respJson = await httpResponse.text();
|
||||
return {
|
||||
isError: false,
|
||||
response: respJson,
|
||||
};
|
||||
}
|
||||
|
||||
export async function checkSuccessResponseOrThrow(
|
||||
httpResponse: HttpResponse,
|
||||
): Promise<void> {
|
||||
if (!(httpResponse.status >= 200 && httpResponse.status < 300)) {
|
||||
const errJson = await httpResponse.json();
|
||||
const talerErrorCode = errJson.code;
|
||||
if (typeof talerErrorCode !== "number") {
|
||||
throw TalerError.fromDetail(
|
||||
TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE,
|
||||
{
|
||||
httpStatusCode: httpResponse.status,
|
||||
requestUrl: httpResponse.requestUrl,
|
||||
requestMethod: httpResponse.requestMethod,
|
||||
},
|
||||
"Error response did not contain error code",
|
||||
);
|
||||
}
|
||||
throwUnexpectedRequestError(httpResponse, errJson);
|
||||
}
|
||||
}
|
||||
|
||||
export async function readSuccessResponseTextOrThrow<T>(
|
||||
httpResponse: HttpResponse,
|
||||
): Promise<string> {
|
||||
const r = await readSuccessResponseTextOrErrorCode(httpResponse);
|
||||
if (!r.isError) {
|
||||
return r.response;
|
||||
}
|
||||
throwUnexpectedRequestError(httpResponse, r.talerErrorResponse);
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the timestamp at which the response's content is considered expired.
|
||||
*/
|
||||
export function getExpiry(
|
||||
httpResponse: HttpResponse,
|
||||
opt: { minDuration?: Duration },
|
||||
): AbsoluteTime {
|
||||
const expiryDateMs = new Date(
|
||||
httpResponse.headers.get("expiry") ?? "",
|
||||
).getTime();
|
||||
let t: AbsoluteTime;
|
||||
if (Number.isNaN(expiryDateMs)) {
|
||||
t = AbsoluteTime.now();
|
||||
} else {
|
||||
t = {
|
||||
t_ms: expiryDateMs,
|
||||
};
|
||||
}
|
||||
if (opt.minDuration) {
|
||||
const t2 = AbsoluteTime.addDuration(AbsoluteTime.now(), opt.minDuration);
|
||||
return AbsoluteTime.max(t, t2);
|
||||
}
|
||||
return t;
|
||||
}
|
||||
|
||||
export function createPlatformHttpLib(args?: HttpLibArgs): HttpRequestLibrary {
|
||||
export function createPlatformHttpLib(args?: common.HttpLibArgs): common.HttpRequestLibrary {
|
||||
return new impl.HttpLibImpl(args);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user