45 lines
1.3 KiB
JavaScript
45 lines
1.3 KiB
JavaScript
import {Transaction} from "./Transaction.js";
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import { STORE_NAMES, StorageError } from "../common.js";
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export class Storage {
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constructor(idbDatabase) {
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this._db = idbDatabase;
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const nameMap = STORE_NAMES.reduce((nameMap, name) => {
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nameMap[name] = name;
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return nameMap;
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}, {});
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this.storeNames = Object.freeze(nameMap);
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}
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_validateStoreNames(storeNames) {
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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) {
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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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return new Transaction(txn, storeNames);
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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) {
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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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return new Transaction(txn, storeNames);
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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() {
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this._db.close();
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}
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}
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