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packages/taler-wallet-core/src/internal-wallet-state.ts
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257
packages/taler-wallet-core/src/internal-wallet-state.ts
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/*
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This file is part of GNU Taler
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(C) 2019 GNUnet e.V.
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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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*/
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/**
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* Common interface of the internal wallet state. This object is passed
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* to the various operations (exchange management, withdrawal, refresh, reserve
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* management, etc.).
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*
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* Some operations can be accessed via this state object. This allows mutual
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* recursion between operations, without having cyclic dependencies between
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* the respective TypeScript files.
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*
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* (You can think of this as a "header file" for the wallet implementation.)
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*/
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/**
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* Imports.
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*/
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import {
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WalletNotification,
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BalancesResponse,
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AmountJson,
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DenominationPubKey,
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TalerProtocolTimestamp,
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} from "@gnu-taler/taler-util";
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import { CryptoApi } from "./crypto/workers/cryptoApi.js";
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import { ExchangeDetailsRecord, ExchangeRecord, WalletStoresV1 } from "./db.js";
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import { PendingOperationsResponse } from "./pending-types.js";
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import { AsyncOpMemoMap, AsyncOpMemoSingle } from "./util/asyncMemo.js";
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import { HttpRequestLibrary } from "./util/http.js";
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import { AsyncCondition } from "./util/promiseUtils.js";
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import {
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DbAccess,
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GetReadOnlyAccess,
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GetReadWriteAccess,
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} from "./util/query.js";
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import { TimerGroup } from "./util/timer.js";
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export const EXCHANGE_COINS_LOCK = "exchange-coins-lock";
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export const EXCHANGE_RESERVES_LOCK = "exchange-reserves-lock";
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export interface TrustInfo {
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isTrusted: boolean;
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isAudited: boolean;
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}
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export interface MerchantInfo {
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protocolVersionCurrent: number;
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}
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/**
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* Interface for merchant-related operations.
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*/
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export interface MerchantOperations {
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getMerchantInfo(
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ws: InternalWalletState,
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merchantBaseUrl: string,
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): Promise<MerchantInfo>;
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}
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export interface ReserveOperations {
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processReserve(
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ws: InternalWalletState,
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reservePub: string,
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forceNow?: boolean,
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): Promise<void>;
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}
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/**
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* Interface for exchange-related operations.
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*/
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export interface ExchangeOperations {
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// FIXME: Should other operations maybe always use
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// updateExchangeFromUrl?
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getExchangeDetails(
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tx: GetReadOnlyAccess<{
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exchanges: typeof WalletStoresV1.exchanges;
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exchangeDetails: typeof WalletStoresV1.exchangeDetails;
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}>,
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exchangeBaseUrl: string,
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): Promise<ExchangeDetailsRecord | undefined>;
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getExchangeTrust(
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ws: InternalWalletState,
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exchangeInfo: ExchangeRecord,
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): Promise<TrustInfo>;
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updateExchangeFromUrl(
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ws: InternalWalletState,
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baseUrl: string,
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acceptedFormat?: string[],
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forceNow?: boolean,
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): Promise<{
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exchange: ExchangeRecord;
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exchangeDetails: ExchangeDetailsRecord;
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}>;
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}
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export interface RecoupOperations {
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createRecoupGroup(
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ws: InternalWalletState,
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tx: GetReadWriteAccess<{
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recoupGroups: typeof WalletStoresV1.recoupGroups;
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denominations: typeof WalletStoresV1.denominations;
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refreshGroups: typeof WalletStoresV1.refreshGroups;
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coins: typeof WalletStoresV1.coins;
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}>,
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coinPubs: string[],
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): Promise<string>;
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processRecoupGroup(
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ws: InternalWalletState,
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recoupGroupId: string,
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forceNow?: boolean,
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): Promise<void>;
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}
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export interface DenomInfo {
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/**
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* Value of one coin of the denomination.
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*/
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value: AmountJson;
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/**
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* The denomination public key.
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*/
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denomPub: DenominationPubKey;
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/**
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* Hash of the denomination public key.
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* Stored in the database for faster lookups.
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*/
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denomPubHash: string;
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/**
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* Fee for withdrawing.
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*/
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feeWithdraw: AmountJson;
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/**
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* Fee for depositing.
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*/
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feeDeposit: AmountJson;
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/**
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* Fee for refreshing.
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*/
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feeRefresh: AmountJson;
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/**
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* Fee for refunding.
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*/
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feeRefund: AmountJson;
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/**
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* Validity start date of the denomination.
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*/
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stampStart: TalerProtocolTimestamp;
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/**
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* Date after which the currency can't be withdrawn anymore.
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*/
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stampExpireWithdraw: TalerProtocolTimestamp;
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/**
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* Date after the denomination officially doesn't exist anymore.
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*/
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stampExpireLegal: TalerProtocolTimestamp;
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/**
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* Data after which coins of this denomination can't be deposited anymore.
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*/
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stampExpireDeposit: TalerProtocolTimestamp;
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}
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export type NotificationListener = (n: WalletNotification) => void;
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/**
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* Internal, shard wallet state that is used by the implementation
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* of wallet operations.
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*
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* FIXME: This should not be exported anywhere from the taler-wallet-core package,
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* as it's an opaque implementation detail.
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*/
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export interface InternalWalletState {
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memoProcessReserve: AsyncOpMemoMap<void>;
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memoMakePlanchet: AsyncOpMemoMap<void>;
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memoGetPending: AsyncOpMemoSingle<PendingOperationsResponse>;
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memoGetBalance: AsyncOpMemoSingle<BalancesResponse>;
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memoProcessRefresh: AsyncOpMemoMap<void>;
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memoProcessRecoup: AsyncOpMemoMap<void>;
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memoProcessDeposit: AsyncOpMemoMap<void>;
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cryptoApi: CryptoApi;
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timerGroup: TimerGroup;
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stopped: boolean;
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insecureTrustExchange: boolean;
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/**
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* Asynchronous condition to interrupt the sleep of the
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* retry loop.
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*
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* Used to allow processing of new work faster.
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*/
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latch: AsyncCondition;
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listeners: NotificationListener[];
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initCalled: boolean;
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merchantInfoCache: Record<string, MerchantInfo>;
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exchangeOps: ExchangeOperations;
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recoupOps: RecoupOperations;
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merchantOps: MerchantOperations;
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reserveOps: ReserveOperations;
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getDenomInfo(
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ws: InternalWalletState,
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tx: GetReadOnlyAccess<{
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denominations: typeof WalletStoresV1.denominations;
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}>,
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exchangeBaseUrl: string,
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denomPubHash: string,
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): Promise<DenomInfo | undefined>;
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db: DbAccess<typeof WalletStoresV1>;
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http: HttpRequestLibrary;
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notify(n: WalletNotification): void;
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addNotificationListener(f: (n: WalletNotification) => void): void;
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/**
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* Stop ongoing processing.
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*/
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stop(): void;
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/**
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* Run an async function after acquiring a list of locks, identified
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* by string tokens.
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*/
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runSequentialized<T>(tokens: string[], f: () => Promise<T>): Promise<T>;
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runUntilDone(req?: { maxRetries?: number }): Promise<void>;
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}
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51
packages/taler-wallet-core/src/operations/common.ts
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51
packages/taler-wallet-core/src/operations/common.ts
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@ -0,0 +1,51 @@
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/*
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This file is part of GNU Taler
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(C) 2022 GNUnet e.V.
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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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*/
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import { TalerErrorDetail, TalerErrorCode } from "@gnu-taler/taler-util";
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import { CryptoApiStoppedError } from "../crypto/workers/cryptoApi.js";
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import { TalerError, getErrorDetailFromException } from "../errors.js";
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/**
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* Run an operation and call the onOpError callback
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* when there was an exception or operation error that must be reported.
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* The cause will be re-thrown to the caller.
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*/
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export async function guardOperationException<T>(
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op: () => Promise<T>,
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onOpError: (e: TalerErrorDetail) => Promise<void>,
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): Promise<T> {
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try {
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return await op();
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} catch (e: any) {
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if (e instanceof CryptoApiStoppedError) {
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throw e;
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}
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if (
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e instanceof TalerError &&
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e.hasErrorCode(TalerErrorCode.WALLET_PENDING_OPERATION_FAILED)
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) {
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throw e;
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}
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const opErr = getErrorDetailFromException(e);
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await onOpError(opErr);
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throw TalerError.fromDetail(
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TalerErrorCode.WALLET_PENDING_OPERATION_FAILED,
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{
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innerError: e.errorDetail,
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},
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);
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}
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}
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