forked from mystiq/hydrogen-web
90 lines
3.4 KiB
TypeScript
90 lines
3.4 KiB
TypeScript
/*
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Copyright 2020 Bruno Windels <bruno@windels.cloud>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import {IDOMStorage} from "./types";
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import {Transaction} from "./Transaction";
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import { STORE_NAMES, StoreNames, StorageError } from "../common";
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import { reqAsPromise } from "./utils";
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import { ILogger } from "../../../logging/types";
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const WEBKITEARLYCLOSETXNBUG_BOGUS_KEY = "782rh281re38-boguskey";
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export class Storage {
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private _db: IDBDatabase;
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private _hasWebkitEarlyCloseTxnBug: boolean;
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readonly logger: ILogger;
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readonly idbFactory: IDBFactory
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readonly IDBKeyRange: typeof IDBKeyRange;
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readonly storeNames: typeof StoreNames;
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readonly localStorage: IDOMStorage;
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constructor(idbDatabase: IDBDatabase, idbFactory: IDBFactory, _IDBKeyRange: typeof IDBKeyRange, hasWebkitEarlyCloseTxnBug: boolean, localStorage: IDOMStorage, logger: ILogger) {
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this._db = idbDatabase;
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this.idbFactory = idbFactory;
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this.IDBKeyRange = _IDBKeyRange;
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this._hasWebkitEarlyCloseTxnBug = hasWebkitEarlyCloseTxnBug;
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this.storeNames = StoreNames;
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this.localStorage = localStorage;
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this.logger = logger;
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}
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_validateStoreNames(storeNames: StoreNames[]): void {
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const idx = storeNames.findIndex(name => !STORE_NAMES.includes(name));
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if (idx !== -1) {
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throw new StorageError(`Tried top, a transaction unknown store ${storeNames[idx]}`);
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}
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}
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async readTxn(storeNames: StoreNames[]): Promise<Transaction> {
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this._validateStoreNames(storeNames);
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try {
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const txn = this._db.transaction(storeNames, "readonly");
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// https://bugs.webkit.org/show_bug.cgi?id=222746 workaround,
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// await a bogus idb request on the new txn so it doesn't close early if we await a microtask first
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if (this._hasWebkitEarlyCloseTxnBug) {
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await reqAsPromise(txn.objectStore(storeNames[0]).get(WEBKITEARLYCLOSETXNBUG_BOGUS_KEY));
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}
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return new Transaction(txn, storeNames, this);
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} catch(err) {
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throw new StorageError("readTxn failed", err);
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}
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}
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async readWriteTxn(storeNames: StoreNames[]): Promise<Transaction> {
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this._validateStoreNames(storeNames);
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try {
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const txn = this._db.transaction(storeNames, "readwrite");
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// https://bugs.webkit.org/show_bug.cgi?id=222746 workaround,
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// await a bogus idb request on the new txn so it doesn't close early if we await a microtask first
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if (this._hasWebkitEarlyCloseTxnBug) {
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await reqAsPromise(txn.objectStore(storeNames[0]).get(WEBKITEARLYCLOSETXNBUG_BOGUS_KEY));
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}
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return new Transaction(txn, storeNames, this);
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} catch(err) {
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throw new StorageError("readWriteTxn failed", err);
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}
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}
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close(): void {
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this._db.close();
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}
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get databaseName(): string {
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return this._db.name;
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}
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}
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