1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/*
This file is part of TALER
(C) 2016 GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
"use strict";
import {IExchangeInfo} from "./types";
/**
* Declarations and helpers for
* things that are stored in the wallet's
* database.
* @module Db
* @author Florian Dold
*/
const DB_NAME = "taler";
const DB_VERSION = 10;
import {Stores} from "./wallet";
import {Store, Index} from "./query";
/**
* Return a promise that resolves
* to the taler wallet db.
*/
export function openTalerDb(): Promise<IDBDatabase> {
return new Promise((resolve, reject) => {
const req = indexedDB.open(DB_NAME, DB_VERSION);
req.onerror = (e) => {
reject(e);
};
req.onsuccess = (e) => {
resolve(req.result);
};
req.onupgradeneeded = (e) => {
const db = req.result;
console.log("DB: upgrade needed: oldVersion = " + e.oldVersion);
switch (e.oldVersion) {
case 0: // DB does not exist yet
for (let n in Stores) {
if ((Stores as any)[n] instanceof Store) {
let si: Store<any> = (Stores as any)[n];
const s = db.createObjectStore(si.name, si.storeParams);
for (let indexName in (si as any)) {
if ((si as any)[indexName] instanceof Index) {
let ii: Index<any,any> = (si as any)[indexName];
s.createIndex(ii.indexName, ii.keyPath);
}
}
}
}
break;
default:
if (e.oldVersion != DB_VERSION) {
window.alert("Incompatible wallet dababase version, please reset" +
" db.");
chrome.browserAction.setBadgeText({text: "err"});
chrome.browserAction.setBadgeBackgroundColor({color: "#F00"});
throw Error("incompatible DB");
}
break;
}
};
});
}
export function exportDb(db: IDBDatabase): Promise<any> {
let dump = {
name: db.name,
version: db.version,
stores: {} as {[s: string]: any},
};
return new Promise((resolve, reject) => {
let tx = db.transaction(Array.from(db.objectStoreNames));
tx.addEventListener("complete", () => {
resolve(dump);
});
for (let i = 0; i < db.objectStoreNames.length; i++) {
let name = db.objectStoreNames[i];
let storeDump = {} as {[s: string]: any};
dump.stores[name] = storeDump;
let store = tx.objectStore(name)
.openCursor()
.addEventListener("success", (e: Event) => {
let cursor = (e.target as any).result;
if (cursor) {
storeDump[cursor.key] = cursor.value;
cursor.continue();
}
});
}
});
}
export function deleteDb() {
indexedDB.deleteDatabase(DB_NAME);
}
|
