@kwiz/node/dist/get-with-cache.js

KWIZ utilities and helpers for node applications

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.getWithCache = void 0;
const common_1 = require("@kwiz/common");
const $$cache = {};
function getWithCache(worker, info) {
    return __awaiter(this, void 0, void 0, function* () {
        const now = new Date();
        //purge old values
        Object.keys($$cache).forEach(key => {
            if ($$cache[key].expires < now)
                delete $$cache[key];
        });
        let cached = info.forceRefresh ? null : $$cache[info.cacheKey];
        if ((0, common_1.isNullOrUndefined)(cached)) {
            const result = yield worker();
            if (result.success) {
                $$cache[info.cacheKey] = {
                    expires: new Date(new Date().getTime() + info.successCacheDuration * 1000),
                    value: result.value
                };
            }
            else if (info.failedCacheDuration > 0) {
                $$cache[info.cacheKey] = {
                    expires: new Date(new Date().getTime() + info.failedCacheDuration * 1000),
                    value: result.value
                };
            }
        }
        return $$cache[info.cacheKey].value;
    });
}
exports.getWithCache = getWithCache;
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