125 lines
2.7 KiB
JavaScript
125 lines
2.7 KiB
JavaScript
/*
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Copyright 2017 Google Inc.
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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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https://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 {DBWrapper} from 'workbox-core/_private/DBWrapper.mjs';
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import '../_version.mjs';
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const URL_KEY = 'url';
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const TIMESTAMP_KEY = 'timestamp';
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/**
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* Returns the timestamp model.
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*
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* @private
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*/
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class CacheTimestampsModel {
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/**
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*
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* @param {string} cacheName
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*
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* @private
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*/
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constructor(cacheName) {
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// TODO Check cacheName
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this._cacheName = cacheName;
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this._storeName = cacheName;
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this._db = new DBWrapper(this._cacheName, 2, {
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onupgradeneeded: (evt) => this._handleUpgrade(evt),
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});
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}
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/**
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* Should perform an upgrade of indexedDB.
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*
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* @param {Event} evt
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*
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* @private
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*/
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_handleUpgrade(evt) {
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const db = evt.target.result;
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if (evt.oldVersion < 2) {
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// Remove old databases.
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if (db.objectStoreNames.contains('workbox-cache-expiration')) {
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db.deleteObjectStore('workbox-cache-expiration');
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}
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}
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db
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.createObjectStore(this._storeName, {keyPath: URL_KEY})
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.createIndex(TIMESTAMP_KEY, TIMESTAMP_KEY, {unique: false});
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}
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/**
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* @param {string} url
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* @param {number} timestamp
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*
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* @private
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*/
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async setTimestamp(url, timestamp) {
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await this._db.put(this._storeName, {
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[URL_KEY]: new URL(url, location).href,
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[TIMESTAMP_KEY]: timestamp,
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});
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}
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/**
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* Get all of the timestamps in the indexedDB.
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*
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* @return {Array<Objects>}
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*
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* @private
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*/
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async getAllTimestamps() {
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return await this._db.getAllMatching(this._storeName, {
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index: TIMESTAMP_KEY,
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});
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}
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/**
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* Returns the timestamp stored for a given URL.
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*
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* @param {string} url
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* @return {number}
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*
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* @private
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*/
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async getTimestamp(url) {
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const timestampObject = await this._db.get(this._storeName, url);
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return timestampObject.timestamp;
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}
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/**
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* @param {string} url
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*
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* @private
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*/
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async deleteUrl(url) {
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await this._db.delete(this._storeName, new URL(url, location).href);
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}
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/**
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* Removes the underlying IndexedDB object store entirely.
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*/
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async delete() {
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await this._db.deleteDatabase();
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this._db = null;
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}
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}
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export default CacheTimestampsModel;
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