diff options
Diffstat (limited to 'packages')
-rw-r--r-- | packages/taler-util/src/http-common.ts | 327 | ||||
-rw-r--r-- | packages/taler-util/src/http.ts | 332 |
2 files changed, 331 insertions, 328 deletions
diff --git a/packages/taler-util/src/http-common.ts b/packages/taler-util/src/http-common.ts index eeb335ba7..54f26e615 100644 --- a/packages/taler-util/src/http-common.ts +++ b/packages/taler-util/src/http-common.ts @@ -16,8 +16,335 @@ SPDX-License-Identifier: AGPL3.0-or-later */ +import { CancellationToken } from "./CancellationToken.js"; +import { Codec } from "./codec.js"; +import { j2s } from "./helpers.js"; +import { TalerError, makeErrorDetail } from "./index.js"; +import { Logger } from "./logging.js"; +import { TalerErrorCode } from "./taler-error-codes.js"; +import { Duration, AbsoluteTime } from "./time.js"; +import { TalerErrorDetail } from "./wallet-types.js"; + const textEncoder = new TextEncoder(); +const logger = new Logger("http.ts"); + +/** + * An HTTP response that is returned by all request methods of this library. + */ +export interface HttpResponse { + requestUrl: string; + requestMethod: string; + status: number; + headers: Headers; + json(): Promise<any>; + text(): Promise<string>; + bytes(): Promise<ArrayBuffer>; +} + +export const DEFAULT_REQUEST_TIMEOUT_MS = 60000; + +export interface HttpRequestOptions { + method?: "POST" | "PUT" | "GET"; + headers?: { [name: string]: string }; + + /** + * Timeout after which the request should be aborted. + */ + timeout?: Duration; + + /** + * Cancellation token that should abort the request when + * cancelled. + */ + cancellationToken?: CancellationToken; + + body?: string | ArrayBuffer | Record<string, unknown>; +} + +/** + * Headers, roughly modeled after the fetch API's headers object. + */ +export class Headers { + private headerMap = new Map<string, string>(); + + get(name: string): string | null { + const r = this.headerMap.get(name.toLowerCase()); + if (r) { + return r; + } + return null; + } + + set(name: string, value: string): void { + const normalizedName = name.toLowerCase(); + const existing = this.headerMap.get(normalizedName); + if (existing !== undefined) { + this.headerMap.set(normalizedName, existing + "," + value); + } else { + this.headerMap.set(normalizedName, value); + } + } + + toJSON(): any { + const m: Record<string, string> = {}; + this.headerMap.forEach((v, k) => (m[k] = v)); + return m; + } +} + +/** + * Interface for the HTTP request library used by the wallet. + * + * The request library is bundled into an interface to make mocking and + * request tunneling easy. + */ +export interface HttpRequestLibrary { + /** + * Make an HTTP GET request. + * + * FIXME: Get rid of this, we want the API surface to be minimal. + */ + get(url: string, opt?: HttpRequestOptions): Promise<HttpResponse>; + + /** + * Make an HTTP POST request with a JSON body. + * + * FIXME: Get rid of this, we want the API surface to be minimal. + */ + postJson( + url: string, + body: any, + opt?: HttpRequestOptions, + ): Promise<HttpResponse>; + + /** + * Make an HTTP POST request with a JSON body. + */ + fetch(url: string, opt?: HttpRequestOptions): Promise<HttpResponse>; +} + +type TalerErrorResponse = { + code: number; +} & unknown; + +type ResponseOrError<T> = + | { isError: false; response: T } + | { isError: true; talerErrorResponse: TalerErrorResponse }; + +export async function readTalerErrorResponse( + httpResponse: HttpResponse, +): Promise<TalerErrorDetail> { + const errJson = await httpResponse.json(); + const talerErrorCode = errJson.code; + if (typeof talerErrorCode !== "number") { + logger.warn( + `malformed error response (status ${httpResponse.status}): ${j2s( + errJson, + )}`, + ); + throw TalerError.fromDetail( + TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE, + { + requestUrl: httpResponse.requestUrl, + requestMethod: httpResponse.requestMethod, + httpStatusCode: httpResponse.status, + }, + "Error response did not contain error code", + ); + } + return errJson; +} + +export async function readUnexpectedResponseDetails( + httpResponse: HttpResponse, +): Promise<TalerErrorDetail> { + const errJson = await httpResponse.json(); + const talerErrorCode = errJson.code; + if (typeof talerErrorCode !== "number") { + return makeErrorDetail( + TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE, + { + requestUrl: httpResponse.requestUrl, + requestMethod: httpResponse.requestMethod, + httpStatusCode: httpResponse.status, + }, + "Error response did not contain error code", + ); + } + return makeErrorDetail( + TalerErrorCode.WALLET_UNEXPECTED_REQUEST_ERROR, + { + requestUrl: httpResponse.requestUrl, + requestMethod: httpResponse.requestMethod, + httpStatusCode: httpResponse.status, + errorResponse: errJson, + }, + `Unexpected HTTP status (${httpResponse.status}) in response`, + ); +} + +export async function readSuccessResponseJsonOrErrorCode<T>( + httpResponse: HttpResponse, + codec: Codec<T>, +): Promise<ResponseOrError<T>> { + if (!(httpResponse.status >= 200 && httpResponse.status < 300)) { + return { + isError: true, + talerErrorResponse: await readTalerErrorResponse(httpResponse), + }; + } + const respJson = await httpResponse.json(); + let parsedResponse: T; + try { + parsedResponse = codec.decode(respJson); + } catch (e: any) { + throw TalerError.fromDetail( + TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE, + { + requestUrl: httpResponse.requestUrl, + requestMethod: httpResponse.requestMethod, + httpStatusCode: httpResponse.status, + validationError: e.toString(), + }, + "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 interface HttpLibArgs { enableThrottling?: boolean, } diff --git a/packages/taler-util/src/http.ts b/packages/taler-util/src/http.ts index fd594b655..725117140 100644 --- a/packages/taler-util/src/http.ts +++ b/packages/taler-util/src/http.ts @@ -24,337 +24,13 @@ /** * Imports */ -import { - Logger, - Duration, - AbsoluteTime, - TalerErrorDetail, - Codec, - j2s, - CancellationToken, -} from "@gnu-taler/taler-util"; -import { TalerErrorCode } from "@gnu-taler/taler-util"; -import { makeErrorDetail, TalerError } from "./errors.js"; -import * as impl from "#http-impl"; -import { HttpLibArgs } from "./http-common.js"; - -const logger = new Logger("http.ts"); - -/** - * An HTTP response that is returned by all request methods of this library. - */ -export interface HttpResponse { - requestUrl: string; - requestMethod: string; - status: number; - headers: Headers; - json(): Promise<any>; - text(): Promise<string>; - bytes(): Promise<ArrayBuffer>; -} - -export const DEFAULT_REQUEST_TIMEOUT_MS = 60000; -export interface HttpRequestOptions { - method?: "POST" | "PUT" | "GET"; - headers?: { [name: string]: string }; - - /** - * Timeout after which the request should be aborted. - */ - timeout?: Duration; - - /** - * Cancellation token that should abort the request when - * cancelled. - */ - cancellationToken?: CancellationToken; - - body?: string | ArrayBuffer | Record<string, unknown>; -} - -/** - * Headers, roughly modeled after the fetch API's headers object. - */ -export class Headers { - private headerMap = new Map<string, string>(); - - get(name: string): string | null { - const r = this.headerMap.get(name.toLowerCase()); - if (r) { - return r; - } - return null; - } - - set(name: string, value: string): void { - const normalizedName = name.toLowerCase(); - const existing = this.headerMap.get(normalizedName); - if (existing !== undefined) { - this.headerMap.set(normalizedName, existing + "," + value); - } else { - this.headerMap.set(normalizedName, value); - } - } - - toJSON(): any { - const m: Record<string, string> = {}; - this.headerMap.forEach((v, k) => (m[k] = v)); - return m; - } -} - -/** - * Interface for the HTTP request library used by the wallet. - * - * The request library is bundled into an interface to make mocking and - * request tunneling easy. - */ -export interface HttpRequestLibrary { - /** - * Make an HTTP GET request. - * - * FIXME: Get rid of this, we want the API surface to be minimal. - */ - get(url: string, opt?: HttpRequestOptions): Promise<HttpResponse>; - - /** - * Make an HTTP POST request with a JSON body. - * - * FIXME: Get rid of this, we want the API surface to be minimal. - */ - postJson( - url: string, - body: any, - opt?: HttpRequestOptions, - ): Promise<HttpResponse>; - - /** - * Make an HTTP POST request with a JSON body. - */ - fetch(url: string, opt?: HttpRequestOptions): Promise<HttpResponse>; -} - -type TalerErrorResponse = { - code: number; -} & unknown; - -type ResponseOrError<T> = - | { isError: false; response: T } - | { isError: true; talerErrorResponse: TalerErrorResponse }; - -export async function readTalerErrorResponse( - httpResponse: HttpResponse, -): Promise<TalerErrorDetail> { - const errJson = await httpResponse.json(); - const talerErrorCode = errJson.code; - if (typeof talerErrorCode !== "number") { - logger.warn( - `malformed error response (status ${httpResponse.status}): ${j2s( - errJson, - )}`, - ); - throw TalerError.fromDetail( - TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE, - { - requestUrl: httpResponse.requestUrl, - requestMethod: httpResponse.requestMethod, - httpStatusCode: httpResponse.status, - }, - "Error response did not contain error code", - ); - } - return errJson; -} - -export async function readUnexpectedResponseDetails( - httpResponse: HttpResponse, -): Promise<TalerErrorDetail> { - const errJson = await httpResponse.json(); - const talerErrorCode = errJson.code; - if (typeof talerErrorCode !== "number") { - return makeErrorDetail( - TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE, - { - requestUrl: httpResponse.requestUrl, - requestMethod: httpResponse.requestMethod, - httpStatusCode: httpResponse.status, - }, - "Error response did not contain error code", - ); - } - return makeErrorDetail( - TalerErrorCode.WALLET_UNEXPECTED_REQUEST_ERROR, - { - requestUrl: httpResponse.requestUrl, - requestMethod: httpResponse.requestMethod, - httpStatusCode: httpResponse.status, - errorResponse: errJson, - }, - `Unexpected HTTP status (${httpResponse.status}) in response`, - ); -} - -export async function readSuccessResponseJsonOrErrorCode<T>( - httpResponse: HttpResponse, - codec: Codec<T>, -): Promise<ResponseOrError<T>> { - if (!(httpResponse.status >= 200 && httpResponse.status < 300)) { - return { - isError: true, - talerErrorResponse: await readTalerErrorResponse(httpResponse), - }; - } - const respJson = await httpResponse.json(); - let parsedResponse: T; - try { - parsedResponse = codec.decode(respJson); - } catch (e: any) { - throw TalerError.fromDetail( - TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE, - { - requestUrl: httpResponse.requestUrl, - requestMethod: httpResponse.requestMethod, - httpStatusCode: httpResponse.status, - validationError: e.toString(), - }, - "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); - } -} +import * as impl from "#http-impl"; +import * as common from "./http-common.js"; -export async function readSuccessResponseTextOrThrow<T>( - httpResponse: HttpResponse, -): Promise<string> { - const r = await readSuccessResponseTextOrErrorCode(httpResponse); - if (!r.isError) { - return r.response; - } - throwUnexpectedRequestError(httpResponse, r.talerErrorResponse); -} +export * from "./http-common.js"; -/** - * 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); } |