node-web-mvc/dist/servlets/resources/WorkerResourceRunner.js

node spring mvc

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
/**
 * WorkerResourceRunner 可用于WorkerResourceResolver提供的workerJs
 * 在workerJs中可以使用当前类实例来运行请求交互
 */
const worker_threads_1 = require("worker_threads");
const WorkerIncomingMessage_1 = __importDefault(require("./WorkerIncomingMessage"));
const WorkerServerResponse_1 = __importDefault(require("./WorkerServerResponse"));
class WorkerResourceRunner {
    constructor(...middlewares) {
        this.middlewares = middlewares;
        worker_threads_1.parentPort.on('message', this.onRequest.bind(this));
    }
    async onRequest(info) {
        const port = info.port;
        try {
            const request = new WorkerIncomingMessage_1.default(info);
            const response = new WorkerServerResponse_1.default(request);
            await new Promise((resolve, reject) => {
                const middlewares = [
                    ...this.middlewares,
                    // 404
                    () => port.postMessage({ type: 'finished' }),
                ];
                const handler = middlewares.reverse().reduce((next, middleware) => {
                    return () => {
                        try {
                            middleware(request, response, (ex) => (ex ? reject(ex) : next()));
                        }
                        catch (ex) {
                            reject(ex);
                        }
                    };
                });
                handler(request, response, resolve);
            });
        }
        catch (ex) {
            port.postMessage({ type: 'error', error: ex });
        }
    }
}
exports.default = WorkerResourceRunner;