vulcain-corejs/dist/preloader.js

Vulcain micro-service framework

"use strict";
const Models = "models";
const Services = "services";
const Handlers = "handlers";
class Preloader {
    constructor() {
        this._preloads = {};
    }
    static get instance() {
        if (!Preloader._instance) {
            Preloader._instance = new Preloader();
        }
        return Preloader._instance;
    }
    registerModel(fn, callback) {
        let key = fn.name;
        this.register(Models, key, callback);
    }
    registerService(fn, callback) {
        let key = fn.name;
        this.register(Services, key, callback);
    }
    registerHandler(fn, callback) {
        let key = fn.name;
        this.register(Handlers, key, callback);
    }
    register(key, name, fn) {
        let list = this._preloads[key];
        if (!list) {
            this._preloads[key] = list = [];
        }
        list.push({ name, callback: fn });
    }
    run(key, container, domain) {
        let items = this._preloads[key];
        if (!items)
            return;
        for (const item of items) {
            item.callback(container, domain);
        }
    }
    runPreloads(container, domain) {
        if (this._preloads) {
            this.run(Models, container, domain);
            this.run(Services, container, domain);
            this.run(Handlers, container, domain);
            this._preloads = {};
        }
    }
}
exports.Preloader = Preloader;

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