98 lines
3.0 KiB
TypeScript
98 lines
3.0 KiB
TypeScript
/*
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This file is part of TALER
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(C) 2016 GNUnet e.V.
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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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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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TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
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*/
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"use strict";
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/**
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* Declarations and helpers for
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* things that are stored in the wallet's
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* database.
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* @module Db
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* @author Florian Dold
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*/
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const DB_NAME = "taler";
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const DB_VERSION = 1;
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/**
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* Return a promise that resolves
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* to the taler wallet db.
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*/
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export function openTalerDb(): Promise<IDBDatabase> {
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return new Promise((resolve, reject) => {
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const req = indexedDB.open(DB_NAME, DB_VERSION);
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req.onerror = (e) => {
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reject(e);
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};
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req.onsuccess = (e) => {
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resolve(req.result);
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};
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req.onupgradeneeded = (e) => {
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let db = req.result;
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console.log("DB: upgrade needed: oldVersion = " + e.oldVersion);
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switch (e.oldVersion) {
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case 0: // DB does not exist yet
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const mints = db.createObjectStore("mints", {keyPath: "baseUrl"});
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mints.createIndex("pubKey", "keys.master_public_key");
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db.createObjectStore("reserves", {keyPath: "reserve_pub"});
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db.createObjectStore("denoms", {keyPath: "denomPub"});
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const coins = db.createObjectStore("coins", {keyPath: "coinPub"});
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coins.createIndex("mintBaseUrl", "mintBaseUrl");
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db.createObjectStore("transactions", {keyPath: "contractHash"});
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db.createObjectStore("precoins",
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{keyPath: "coinPub", autoIncrement: true});
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const history = db.createObjectStore("history", {keyPath: "id", autoIncrement: true});
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history.createIndex("timestamp", "timestamp");
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break;
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}
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};
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});
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}
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export function exportDb(db): Promise<any> {
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let dump = {
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name: db.name,
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version: db.version,
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stores: {}
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};
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return new Promise((resolve, reject) => {
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let tx = db.transaction(db.objectStoreNames);
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tx.addEventListener("complete", (e) => {
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resolve(dump);
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});
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for (let i = 0; i < db.objectStoreNames.length; i++) {
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let name = db.objectStoreNames[i];
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let storeDump = {};
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dump.stores[name] = storeDump;
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let store = tx.objectStore(name)
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.openCursor()
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.addEventListener("success", (e) => {
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let cursor = e.target.result;
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if (cursor) {
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storeDump[cursor.key] = cursor.value;
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cursor.continue();
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}
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});
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}
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});
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}
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export function deleteDb() {
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indexedDB.deleteDatabase(DB_NAME);
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} |