@foxpage/foxpage-manager/lib/cache/lru.js

foxpage resource manager

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.LRUCache = void 0;
const lodash_1 = __importDefault(require("lodash"));
const lru_cache_1 = __importDefault(require("lru-cache"));
/**
 * lru cache
 *
 * @export
 * @class LRUCache
 * @implements {ResourceCache<T>}
 * @template T
 */
class LRUCache {
    constructor(maxSize, opt) {
        this.lruCache = new lru_cache_1.default({
            max: maxSize || 3000, // 0 will be Infinity
        });
        this.opt = opt;
    }
    /**
     * set resource
     *
     * @param {string} id
     * @param {T} resource
     */
    set(id, resource) {
        var _a;
        this.lruCache.set(id, ((_a = this.opt) === null || _a === void 0 ? void 0 : _a.cloned) === false ? resource : lodash_1.default.cloneDeep(resource));
    }
    /**
     * get resource
     *
     * @param {string} id
     * @return {*}  {(T | null | undefined)}
     */
    get(id) {
        var _a;
        const result = this.lruCache.get(id);
        return ((_a = this.opt) === null || _a === void 0 ? void 0 : _a.cloned) === false ? result : lodash_1.default.cloneDeep(result);
    }
    /**
     * get count
     * @returns count
     */
    getCurCount() {
        return this.lruCache.itemCount;
    }
    /**
     * has resource
     *
     * @param {string} id
     * @return {*}  {boolean}
     */
    has(id) {
        return this.lruCache.has(id);
    }
    /**
     * delete resource
     *
     * @param {string} id
     */
    delete(id) {
        this.lruCache.del(id);
    }
    /**
     * reset
     *
     */
    destroy() {
        this.lruCache.reset();
    }
    /**
     * dump
     *
     * @return {*}  {Array<{ key: string; value: T }>}
     */
    dump() {
        return this.lruCache.dump().map(({ k: key, v: value }) => ({
            key,
            value,
        }));
    }
}
exports.LRUCache = LRUCache;