base-nestjs-app/dist/internal/listen.js

Nestjs wrapper for creation of standarized apps

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.listen = listen;
const net_1 = require("net");
const DEFAULT_PORT = 3000;
async function getUnusedPortOtherThan(mainPort) {
    const servers = [];
    let port = 0;
    do {
        const server = (0, net_1.createServer)();
        await new Promise((resolve, reject) => {
            server.on('error', reject);
            server.listen(0, () => {
                servers.push(server);
                const address = server.address();
                if (address && typeof address === 'object') {
                    const serverPort = address.port;
                    if (serverPort !== mainPort)
                        port = serverPort;
                }
                else {
                    reject(new Error('Could not get server address'));
                }
                resolve();
            });
        });
    } while (!port || port === mainPort);
    servers.forEach((server) => server.close());
    return port;
}
async function listen(app, options) {
    const mainPort = options.server?.port ?? DEFAULT_PORT;
    if (options.microservices?.length) {
        for (const ms of app.getMicroservices()) {
            if ('serverInstance' in ms &&
                typeof ms.serverInstance === 'object' &&
                ms.serverInstance &&
                'port' in ms.serverInstance &&
                ms.serverInstance.port === mainPort) {
                ms.serverInstance.port = await getUnusedPortOtherThan(mainPort);
                options.loggingModule.logger.warn(`Microservice port conflicted with main server port. Changed microservice port to ${ms.serverInstance.port}`);
            }
        }
        await app.startAllMicroservices();
    }
    await app.listen(mainPort, '0.0.0.0');
    options.loggingModule.logger.info(`Listening on ${await app.getUrl()}`);
    return app;
}
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