serverless-offline-edge-lambda/dist/services/cache.service.js

A plugin for the Serverless Framework that simulates the behavior of AWS CloudFront Edge Lambdas while developing offline.

"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());
    });
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.CacheService = void 0;
const flat_cache_1 = __importDefault(require("flat-cache"));
const constants_1 = require("../constants");
class CacheService {
    constructor(cacheDir) {
        this.cacheDir = cacheDir;
        this.cache = flat_cache_1.default.load(constants_1.CacheId, cacheDir);
    }
    retrieveFromCache(event) {
        const { request } = event.Records[0].cf;
        const { uri } = request;
        return this.cache.getKey(uri);
    }
    saveToCache(event) {
        const { request } = event.Records[0].cf;
        const { uri } = request;
        const { body } = event.Records[0].cf.response;
        this.cache.setKey(uri, body);
        this.cache.save();
    }
    purge() {
        return __awaiter(this, void 0, void 0, function* () {
            flat_cache_1.default.clearCacheById(constants_1.CacheId);
            // FIXME Workaround. Bug in flat-cache clear methods.
            Object.entries(this.cache.all()).forEach(entry => {
                this.cache.removeKey(entry[0]);
            });
        });
    }
}
exports.CacheService = CacheService;
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