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This commit is contained in:
Kismet Hasanaj
+426
@@ -0,0 +1,426 @@
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// Start CPU profile if it wasn't already started.
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import './cpu-profile';
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import { getNetworkHost } from '../../lib/get-network-host';
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import '../next';
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import '../require-hook';
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import fs from 'fs';
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import v8 from 'v8';
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import path from 'path';
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import http from 'http';
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import https from 'https';
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import os from 'os';
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import { exec } from 'child_process';
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import Watchpack from 'next/dist/compiled/watchpack';
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import * as Log from '../../build/output/log';
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import setupDebug from 'next/dist/compiled/debug';
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import { RESTART_EXIT_CODE } from './utils';
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import { formatHostname } from './format-hostname';
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import { initialize } from './router-server';
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import { CONFIG_FILES, PHASE_DEVELOPMENT_SERVER } from '../../shared/lib/constants';
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import { getEnvInfo, logExperimentalInfo, logStartInfo } from './app-info-log';
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import { validateTurboNextConfig } from '../../lib/turbopack-warning';
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import { trace, flushAllTraces, exportTraceState, initializeTraceState } from '../../trace';
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import { isIPv6 } from './is-ipv6';
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import { AsyncCallbackSet } from './async-callback-set';
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import { durationToString } from '../../build/duration-to-string';
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const debug = setupDebug('next:start-server');
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let startServerSpan;
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/**
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* Get the process ID (PID) of the process using the specified port
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*/ async function getProcessIdUsingPort(port) {
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const timeoutMs = 250;
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const processLookupController = new AbortController();
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const pidPromise = new Promise((resolve)=>{
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const handleError = (error)=>{
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debug('Failed to get process ID for port', port, error);
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resolve(null);
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};
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try {
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// Use lsof on Unix-like systems (macOS, Linux)
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if (process.platform !== 'win32') {
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exec(`lsof -ti:${port} -sTCP:LISTEN`, {
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signal: processLookupController.signal
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}, (error, stdout)=>{
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if (error) {
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handleError(error);
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return;
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}
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// `-sTCP` will ensure there's only one port, clean up output
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const pid = stdout.trim();
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resolve(pid || null);
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});
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} else {
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// Use netstat on Windows
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exec(`netstat -ano | findstr /C:":${port} " | findstr LISTENING`, {
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signal: processLookupController.signal
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}, (error, stdout)=>{
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if (error) {
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handleError(error);
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return;
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}
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// Clean up output and extract PID
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const cleanOutput = stdout.replace(/\s+/g, ' ').trim();
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if (cleanOutput) {
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const lines = cleanOutput.split('\n');
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const firstLine = lines[0].trim();
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if (firstLine) {
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const parts = firstLine.split(' ');
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const pid = parts[parts.length - 1];
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resolve(pid || null);
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} else {
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resolve(null);
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}
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} else {
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resolve(null);
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}
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});
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}
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} catch (cause) {
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handleError(Object.defineProperty(new Error('Unexpected error during process lookup', {
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cause
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}), "__NEXT_ERROR_CODE", {
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value: "E713",
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enumerable: false,
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configurable: true
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}));
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}
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});
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const timeoutId = setTimeout(()=>{
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processLookupController.abort(`PID detection timed out after ${timeoutMs}ms for port ${port}.`);
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}, timeoutMs);
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pidPromise.finally(()=>clearTimeout(timeoutId));
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return pidPromise;
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}
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export async function getRequestHandlers({ dir, port, isDev, onDevServerCleanup, server, hostname, minimalMode, keepAliveTimeout, experimentalHttpsServer, serverFastRefresh, quiet }) {
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return initialize({
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dir,
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port,
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hostname,
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onDevServerCleanup,
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dev: isDev,
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minimalMode,
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server,
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keepAliveTimeout,
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experimentalHttpsServer,
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serverFastRefresh,
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startServerSpan,
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quiet
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});
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}
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export async function startServer(serverOptions) {
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const { dir, isDev, hostname, minimalMode, allowRetry, keepAliveTimeout, selfSignedCertificate, serverFastRefresh } = serverOptions;
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let { port } = serverOptions;
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process.title = `next-server (v${"16.2.0"})`;
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let handlersReady = ()=>{};
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let handlersError = ()=>{};
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let handlersPromise = new Promise((resolve, reject)=>{
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handlersReady = resolve;
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handlersError = reject;
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});
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let requestHandler = async (req, res)=>{
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if (handlersPromise) {
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await handlersPromise;
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return requestHandler(req, res);
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}
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throw Object.defineProperty(new Error('Invariant request handler was not setup'), "__NEXT_ERROR_CODE", {
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value: "E287",
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enumerable: false,
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configurable: true
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});
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};
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let upgradeHandler = async (req, socket, head)=>{
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if (handlersPromise) {
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await handlersPromise;
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return upgradeHandler(req, socket, head);
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}
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throw Object.defineProperty(new Error('Invariant upgrade handler was not setup'), "__NEXT_ERROR_CODE", {
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value: "E290",
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enumerable: false,
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configurable: true
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});
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};
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let nextServer;
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// setup server listener as fast as possible
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if (selfSignedCertificate && !isDev) {
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throw Object.defineProperty(new Error('Using a self signed certificate is only supported with `next dev`.'), "__NEXT_ERROR_CODE", {
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value: "E128",
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enumerable: false,
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configurable: true
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});
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}
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async function requestListener(req, res) {
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try {
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if (handlersPromise) {
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await handlersPromise;
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handlersPromise = undefined;
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}
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await requestHandler(req, res);
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} catch (err) {
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res.statusCode = 500;
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res.end('Internal Server Error');
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Log.error(`Failed to handle request for ${req.url}`);
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console.error(err);
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} finally{
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if (isDev) {
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if (v8.getHeapStatistics().used_heap_size > 0.8 * v8.getHeapStatistics().heap_size_limit) {
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Log.warn(`Server is approaching the used memory threshold, restarting...`);
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trace('server-restart-close-to-memory-threshold', undefined, {
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'memory.heapSizeLimit': String(v8.getHeapStatistics().heap_size_limit),
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'memory.heapUsed': String(v8.getHeapStatistics().used_heap_size)
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}).stop();
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await flushAllTraces();
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process.exit(RESTART_EXIT_CODE);
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}
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}
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}
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}
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const server = selfSignedCertificate ? https.createServer({
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key: fs.readFileSync(selfSignedCertificate.key),
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cert: fs.readFileSync(selfSignedCertificate.cert)
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}, requestListener) : http.createServer(requestListener);
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if (keepAliveTimeout) {
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server.keepAliveTimeout = keepAliveTimeout;
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}
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server.on('upgrade', async (req, socket, head)=>{
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try {
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await upgradeHandler(req, socket, head);
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} catch (err) {
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socket.destroy();
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Log.error(`Failed to handle request for ${req.url}`);
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console.error(err);
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}
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});
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let portRetryCount = 0;
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const originalPort = port;
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server.on('error', (err)=>{
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if (allowRetry && port && isDev && err.code === 'EADDRINUSE' && portRetryCount < 10) {
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port += 1;
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portRetryCount += 1;
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server.listen(port, hostname);
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} else {
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Log.error(`Failed to start server`);
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console.error(err);
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process.exit(1);
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}
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});
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let cleanupListeners = isDev ? new AsyncCallbackSet() : undefined;
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const distDir = await new Promise((resolve)=>{
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server.on('listening', async ()=>{
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const addr = server.address();
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const actualHostname = formatHostname(typeof addr === 'object' ? (addr == null ? void 0 : addr.address) || hostname || 'localhost' : addr);
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const formattedHostname = !hostname || actualHostname === '0.0.0.0' ? 'localhost' : actualHostname === '[::]' ? '[::1]' : formatHostname(hostname);
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port = typeof addr === 'object' ? (addr == null ? void 0 : addr.port) || port : port;
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if (portRetryCount) {
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const pid = await getProcessIdUsingPort(originalPort);
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if (pid) {
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Log.warn(`Port ${originalPort} is in use by process ${pid}, using available port ${port} instead.`);
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} else {
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Log.warn(`Port ${originalPort} is in use by an unknown process, using available port ${port} instead.`);
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}
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}
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const networkHostname = hostname ?? getNetworkHost(isIPv6(actualHostname) ? 'IPv6' : 'IPv4');
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const protocol = selfSignedCertificate ? 'https' : 'http';
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const networkUrl = networkHostname ? `${protocol}://${formatHostname(networkHostname)}:${port}` : null;
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const appUrl = `${protocol}://${formattedHostname}:${port}`;
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// Store the selected port to:
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// - expose it to render workers
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// - re-use it for automatic dev server restarts with a randomly selected port
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process.env.PORT = port + '';
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process.env.__NEXT_PRIVATE_ORIGIN = appUrl;
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// Set experimental HTTPS flag for metadata resolution
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if (selfSignedCertificate) {
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process.env.__NEXT_EXPERIMENTAL_HTTPS = '1';
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}
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// Get env info first (fast, doesn't require config)
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const envInfo = isDev ? getEnvInfo(dir) : undefined;
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// Log basic startup info immediately (before loading config)
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logStartInfo({
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networkUrl,
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appUrl,
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envInfo,
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logBundler: isDev
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});
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// Calculate and log "Ready in X" before loading config
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// so it reflects actual framework startup time.
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// NEXT_PRIVATE_START_TIME is set by bin/next.ts or cli/next-start.ts.
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const startTime = parseInt(process.env.NEXT_PRIVATE_START_TIME || '0', 10);
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const endTime = Date.now();
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const startServerProcessDurationMs = startTime ? endTime - startTime : 0;
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const formattedStartDuration = durationToString(startServerProcessDurationMs / 1000);
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Log.event(`Ready in ${formattedStartDuration}`);
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try {
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let cleanupStarted = false;
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let closeUpgraded = null;
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const cleanup = (signal)=>{
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if (cleanupStarted) {
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// We can get duplicate signals, e.g. when `ctrl+c` is used in an
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// interactive shell (i.e. bash, zsh), the shell will recursively
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// send SIGINT to children. The parent `next-dev` process will also
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// send us SIGINT.
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return;
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}
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cleanupStarted = true;
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(async ()=>{
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debug('start-server process cleanup');
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// first, stop accepting new connections and finish pending requests,
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// because they might affect `nextServer.close()` (e.g. by scheduling an `after`)
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await new Promise((res)=>{
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server.close((err)=>{
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if (err) console.error(err);
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res();
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});
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if (isDev) {
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server.closeAllConnections();
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closeUpgraded == null ? void 0 : closeUpgraded();
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}
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});
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// now that no new requests can come in, clean up the rest
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await Promise.all([
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nextServer == null ? void 0 : nextServer.close().catch(console.error),
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cleanupListeners == null ? void 0 : cleanupListeners.runAll().catch(console.error)
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]);
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// Flush any remaining traces to the trace file on shutdown
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await flushAllTraces();
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// Flush telemetry if this is a dev server
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if (isDev) {
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try {
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const { traceGlobals } = require('../../trace/shared');
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const telemetry = traceGlobals.get('telemetry');
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if (telemetry) {
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// Use flushDetached to avoid blocking process exit
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// Each process writes to a unique file (_events_${pid}.json)
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// to avoid race conditions with the parent process
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telemetry.flushDetached('dev', dir);
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}
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} catch (_) {
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// Ignore telemetry errors during cleanup
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}
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}
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debug('start-server process cleanup finished');
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// Exit with signal-based exit code (128 + signal number) so that
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// Node.js treats this as a signal termination, not a normal exit.
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// This avoids waiting for the debugger to disconnect.
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switch(signal){
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case 'SIGINT':
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process.exit(130);
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break;
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case 'SIGTERM':
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process.exit(143);
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break;
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default:
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// Make sure all handled signals have explicit exit codes.
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// This is just a fallback to guard against unsound types.
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signal;
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process.exit(128);
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}
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})();
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};
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// Make sure commands gracefully respect termination signals (e.g. from Docker)
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// Allow the graceful termination to be manually configurable
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if (!process.env.NEXT_MANUAL_SIG_HANDLE) {
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process.on('SIGINT', cleanup);
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process.on('SIGTERM', cleanup);
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}
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// Now load config via getRequestHandlers (single loadConfig call)
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const initResult = await getRequestHandlers({
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dir,
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port,
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isDev,
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onDevServerCleanup: cleanupListeners ? cleanupListeners.add.bind(cleanupListeners) : undefined,
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server,
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hostname,
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minimalMode,
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keepAliveTimeout,
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experimentalHttpsServer: !!selfSignedCertificate,
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serverFastRefresh
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});
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requestHandler = initResult.requestHandler;
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upgradeHandler = initResult.upgradeHandler;
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nextServer = initResult.server;
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closeUpgraded = initResult.closeUpgraded;
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// Log experimental features after config is loaded
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if (isDev) {
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logExperimentalInfo({
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experimentalFeatures: initResult.experimentalFeatures,
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cacheComponents: initResult.cacheComponents
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});
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}
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handlersReady();
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if (process.env.TURBOPACK && isDev) {
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await validateTurboNextConfig({
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dir: serverOptions.dir,
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configPhase: PHASE_DEVELOPMENT_SERVER
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});
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}
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resolve(initResult.distDir);
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} catch (err) {
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// fatal error if we can't setup
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handlersError();
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console.error(err);
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process.exit(1);
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}
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});
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server.listen(port, hostname);
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});
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if (isDev) {
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function watchConfigFiles(dirToWatch, onChange) {
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const wp = new Watchpack();
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wp.watch({
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files: CONFIG_FILES.map((file)=>path.join(dirToWatch, file))
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});
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wp.on('change', onChange);
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}
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watchConfigFiles(dir, async (filename)=>{
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if (process.env.__NEXT_DISABLE_MEMORY_WATCHER) {
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Log.info(`Detected change, manual restart required due to '__NEXT_DISABLE_MEMORY_WATCHER' usage`);
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return;
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}
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Log.warn(`Found a change in ${path.basename(filename)}. Restarting the server to apply the changes...`);
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process.exit(RESTART_EXIT_CODE);
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});
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}
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return {
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distDir
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};
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}
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if (process.env.NEXT_PRIVATE_WORKER && process.send) {
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process.addListener('message', async (msg)=>{
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if (msg && typeof msg === 'object' && msg.nextWorkerOptions && process.send) {
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let enabledFeaturesFromParent = {};
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if (process.env.NEXT_PRIVATE_ENABLED_FEATURES) {
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const parsed = JSON.parse(process.env.NEXT_PRIVATE_ENABLED_FEATURES);
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enabledFeaturesFromParent = Object.fromEntries(Object.entries(parsed).map(([key, value])=>[
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`feature.${key}`,
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value
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]));
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}
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startServerSpan = trace('start-dev-server', undefined, {
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cpus: String(os.cpus().length),
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platform: os.platform(),
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'memory.freeMem': String(os.freemem()),
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'memory.totalMem': String(os.totalmem()),
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'memory.heapSizeLimit': String(v8.getHeapStatistics().heap_size_limit),
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...enabledFeaturesFromParent
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});
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initializeTraceState({
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...exportTraceState(),
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defaultParentSpanId: startServerSpan.getId()
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});
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const result = await startServerSpan.traceAsyncFn(()=>startServer(msg.nextWorkerOptions));
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const memoryUsage = process.memoryUsage();
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startServerSpan.setAttribute('memory.rss', String(memoryUsage.rss));
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startServerSpan.setAttribute('memory.heapTotal', String(memoryUsage.heapTotal));
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startServerSpan.setAttribute('memory.heapUsed', String(memoryUsage.heapUsed));
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process.send({
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nextServerReady: true,
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port: process.env.PORT,
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distDir: result.distDir
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});
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}
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});
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process.send({
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nextWorkerReady: true
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});
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}
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//# sourceMappingURL=start-server.js.map
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