document-server-integration/web/documentserver-example/nodejs/helpers/cacheManager.js

/*
 *
 * (c) Copyright Ascensio System SIA 2020
 *
 * The MIT License (MIT)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
*/

var cache = {};

exports.put = function (key, value) {
    cache[key] = { value:value, time: new Date().getTime()};
}

exports.containsKey = function (key) {
    if (typeof cache[key] == "undefined"){
        return false;
    }

    var secondsCache = 30;

    var t1 = new Date(cache[key].time + (1000 * secondsCache));
    var t2 = new Date();
    if (t1 < t2 ){
        delete cache[key];
        return false;
    }

    return true;
}

exports.get = function (key) {
    return cache[key];
}

exports.delete = function (key) {
    delete cache[key];
}

exports.clear = function () {
    cache = {};
}