astroboy/loader/AstroboyMiddlewareLoader.js

Astroboy（阿童木）is a Nodejs SFB(Separation of Front and Back ends) framework, built on koa2.

"use strict";
const path = require("path");
const lodash = require("lodash");
const Loader_1 = require("../core/Loader");
const util_1 = require("../core/lib/util");
class AstroboyMiddlewareLoader extends Loader_1.Loader {
    async load() {
        // 加载中间件配置
        let middlewareConfig = {};
        const configEntries = await this.globDirs(this.config.configPattern || []);
        configEntries.forEach((entry) => {
            middlewareConfig = lodash.merge(middlewareConfig, require(entry));
        });
        this.app.middlewareConfig = middlewareConfig;
        // 加载中间件文件
        let middlewares = {};
        const entries = await this.globDirs(this.config.pattern || []);
        entries.forEach((entry) => {
            const key = this.resolveExtensions(path.basename(entry));
            middlewares[key] = require(entry);
            if (middlewareConfig[key]) {
                try {
                    middlewareConfig[key]['path'] = entry;
                }
                catch (_a) {
                    /* noop */
                }
            }
        });
        this.app.middlewares = middlewares;
        // 生成中间件加载顺序
        let middlewareQueue = [];
        Object.keys(middlewareConfig).forEach((item) => {
            middlewareQueue.push(Object.assign({
                priority: 300,
                name: item,
            }, middlewareConfig[item]));
        });
        middlewareQueue = middlewareQueue
            .filter((item) => {
            return item.enable === true;
        })
            .sort((a, b) => {
            return a.priority - b.priority;
        });
        this.app.middlewareQueue = middlewareQueue;
        await util_1.outputJsonAsync(`${this.app.ROOT_PATH}/run/middlewares.json`, middlewareQueue);
    }
}
module.exports = AstroboyMiddlewareLoader;
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