505 lines
14 KiB
JavaScript
505 lines
14 KiB
JavaScript
#!/usr/bin/env node
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/**
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* 热启动 mnote-web 单入口，以及按需启用的 FastAPI。
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* 可使用以下环境变量调整行为：
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* - ENABLE_BACKEND：设为 "1" or "true" 时启用默认 FastAPI 后端
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* - BACKEND_CMD：覆盖 FastAPI 启动命令；设置后即视为显式启用后端
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* - SKIP_BACKEND：设为 "1" or "true" 可强制跳过 FastAPI 后端
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* - PYTHON_BIN：只在 BACKEND_CMD 未覆盖时，设置 Python 可执行文件，默认 "python"
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*/
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const { spawn, execSync } = require("child_process");
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const path = require("path");
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const net = require("net");
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const fs = require("fs");
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const rootDir = path.resolve(__dirname, "..");
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const backendDir = path.join(rootDir, "wolai-backend");
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function resolveBackendExecutable(envName, fallbackName) {
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const fromEnv = (process.env[envName] || "").trim();
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if (fromEnv) return fromEnv;
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const isWin = process.platform === "win32";
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const candidates = isWin
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? [
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path.join(backendDir, ".venv", "Scripts", `${fallbackName}.exe`),
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path.join(backendDir, ".venv312", "Scripts", `${fallbackName}.exe`),
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path.join(backendDir, "venv", "Scripts", `${fallbackName}.exe`),
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]
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: [
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path.join(backendDir, ".venv-linux", "bin", fallbackName),
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path.join(backendDir, ".venv", "bin", fallbackName),
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path.join(backendDir, "venv", "bin", fallbackName),
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];
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for (const candidate of candidates) {
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if (fs.existsSync(candidate)) {
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return candidate;
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}
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}
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return fallbackName;
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}
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const pythonBin = resolveBackendExecutable("PYTHON_BIN", "python");
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const backendPortFromEnv = Number(process.env.BACKEND_PORT || 8000);
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function hasCommand(command) {
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try {
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execSync(`command -v ${command}`, { stdio: "ignore", shell: "/bin/sh" });
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return true;
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} catch {
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return false;
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}
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}
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function shouldUseUvBackendRuntime() {
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if (String(process.env.PYTHON_BIN || "").trim()) return false;
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if (!fs.existsSync(path.join(backendDir, "requirements.txt"))) return false;
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return hasCommand("uv");
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}
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function buildDefaultBackendCommand(port) {
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if (shouldUseUvBackendRuntime()) {
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return `uv run --with-requirements requirements.txt python -m uvicorn app.main:app --reload --port ${port}`;
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}
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return `${pythonBin} -m uvicorn app.main:app --reload --port ${port}`;
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}
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function isEnabledEnv(value) {
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const normalized = String(value || "").toLowerCase();
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return normalized === "1" || normalized === "true";
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}
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function shouldStartBackend(env = process.env) {
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if (isEnabledEnv(env.SKIP_BACKEND)) return false;
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if (String(env.BACKEND_CMD || "").trim()) return true;
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return isEnabledEnv(env.ENABLE_BACKEND);
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}
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function resolveRuntimePlan(env = process.env) {
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const frontendPort = Number(env.FRONTEND_PORT || 3000);
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const skipGateway = false;
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const publicPort = Number.isFinite(frontendPort) ? Math.floor(frontendPort) : 3000;
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return {
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skipGateway,
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publicPort,
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publicUrl: `http://localhost:${publicPort}`,
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mnoteWebCommand: env.MNOTE_WEB_CMD || "cargo run -p mnote-web --bin mnote-web",
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mnoteWebEnv: {
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MNOTE_WEB_BIND: env.MNOTE_WEB_BIND || `0.0.0.0:${publicPort}`,
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MNOTE_WEB_PUBLIC_BIND: env.MNOTE_WEB_PUBLIC_BIND || `127.0.0.1:${publicPort}`,
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},
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};
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}
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const runtimePlan = resolveRuntimePlan(process.env);
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const skipMnoteWebGateway = runtimePlan.skipGateway;
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const tasks = [
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...(skipMnoteWebGateway
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? []
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: [
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{
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name: "mnote-web",
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command:
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process.env.MNOTE_WEB_CMD ||
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runtimePlan.mnoteWebCommand,
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cwd: path.join(rootDir, "rust"),
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},
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]),
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...(shouldStartBackend(process.env)
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? [
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{
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name: "backend",
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command:
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process.env.BACKEND_CMD ||
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buildDefaultBackendCommand(8000),
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cwd: backendDir,
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},
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]
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: []),
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];
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function findTask(name) {
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return tasks.find((task) => task.name === name);
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}
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const children = [];
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let shuttingDown = false;
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async function isPortFree(host, port, timeoutMs = 400) {
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return await new Promise((resolve) => {
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const socket = net.createConnection({ host, port });
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const timer = setTimeout(() => {
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socket.destroy();
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resolve(true);
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}, timeoutMs);
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socket.once("connect", () => {
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clearTimeout(timer);
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socket.end();
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resolve(false);
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});
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socket.once("error", () => {
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clearTimeout(timer);
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resolve(true);
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});
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});
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}
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async function findFreePort(startPort) {
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let port = Number.isFinite(startPort) ? Math.floor(startPort) : 3000;
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port = Math.max(1, Math.min(65535, port));
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// 最多尝试 20 个端口，避免无限循环。
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for (let i = 0; i < 20; i += 1) {
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// eslint-disable-next-line no-await-in-loop
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const free = await isPortFree("127.0.0.1", port);
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if (free) return port;
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port += 1;
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}
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return startPort;
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}
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function getListeningPidsByPort(port) {
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const pids = new Set();
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if (process.platform !== "win32") {
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try {
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const out = execSync(`ss -ltnp 'sport = :${port}'`, { encoding: "utf8" });
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for (const match of out.matchAll(/pid=(\d+)/g)) {
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const pid = Number(match[1]);
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if (Number.isFinite(pid) && pid > 0) {
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pids.add(pid);
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}
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}
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} catch {
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// ignore
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}
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if (pids.size > 0) {
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return [...pids];
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}
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try {
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const out = execSync(`lsof -nP -iTCP:${port} -sTCP:LISTEN -t`, { encoding: "utf8" });
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for (const line of out.split(/\r?\n/)) {
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const pid = Number(line.trim());
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if (Number.isFinite(pid) && pid > 0) {
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pids.add(pid);
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}
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}
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} catch {
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// ignore
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}
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return [...pids];
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}
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try {
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// 说明：netstat 输出示例：
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// TCP 0.0.0.0:3000 0.0.0.0:0 LISTENING 12345
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const out = execSync("netstat -ano -p tcp", { encoding: "utf8" });
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for (const line of out.split(/\r?\n/)) {
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if (!line.includes(`:${port}`)) continue;
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if (!/LISTENING/i.test(line)) continue;
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const parts = line.trim().split(/\s+/);
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const pid = Number(parts[parts.length - 1]);
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if (Number.isFinite(pid) && pid > 0) {
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pids.add(pid);
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}
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}
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return [...pids];
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} catch {
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return [];
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}
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}
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function getProcessNameByPid(pid) {
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if (process.platform !== "win32") {
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try {
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return execSync(`ps -p ${pid} -o comm=`, { encoding: "utf8" }).trim();
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} catch {
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return "";
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}
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}
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try {
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// 输出为 CSV，示例：
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// "Image Name","PID","Session Name","Session#","Mem Usage"
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// "python.exe","12345","Console","1","12,345 K"
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const out = execSync(`tasklist /FI "PID eq ${pid}" /FO CSV /NH`, {
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encoding: "utf8",
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}).trim();
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if (!out || /No tasks are running/i.test(out)) return "";
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const firstLine = out.split(/\r?\n/)[0].trim();
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if (!firstLine) return "";
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const cells = firstLine
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.split('","')
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.map((s) => s.replace(/^"/, "").replace(/"$/, ""));
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return (cells[0] || "").trim();
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} catch {
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return "";
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}
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}
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function terminatePid(pid) {
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if (process.platform === "win32") {
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execSync(`taskkill /PID ${pid} /T /F`, { stdio: "ignore" });
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return;
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}
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try {
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process.kill(pid, "SIGTERM");
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} catch {
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return;
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}
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}
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function forceKillPid(pid) {
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if (process.platform === "win32") {
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execSync(`taskkill /PID ${pid} /T /F`, { stdio: "ignore" });
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return;
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}
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try {
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process.kill(pid, "SIGKILL");
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} catch {
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// 进程可能已经退出。
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}
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}
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async function ensurePortFree(port, nameForLog) {
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const free = await isPortFree("127.0.0.1", port);
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if (free) return true;
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const pids = getListeningPidsByPort(port);
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if (pids.length === 0) {
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logPrefix(nameForLog, `检测到端口 ${port} 被占用，但无法定位 PID。`);
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return false;
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}
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let killPids = pids;
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// 安全策略：后端默认只结束 python 进程（避免误杀其他服务）。
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if (nameForLog === "backend") {
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killPids = pids.filter((pid) => {
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const procName = getProcessNameByPid(pid).toLowerCase();
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return procName.includes("python");
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});
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if (killPids.length === 0) {
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logPrefix(
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nameForLog,
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`检测到端口 ${port} 被占用，但没有可安全结束的 python 进程（PIDs=${pids.join(", ")}）。请手动释放端口后重试。`,
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);
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return false;
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}
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}
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logPrefix(nameForLog, `检测到端口 ${port} 被占用，准备重启（结束旧进程）：${killPids.join(", ")}`);
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for (const pid of killPids) {
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try {
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terminatePid(pid);
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} catch {
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// ignore
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}
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}
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// 等待端口释放
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for (let i = 0; i < 20; i += 1) {
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// eslint-disable-next-line no-await-in-loop
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const ok = await isPortFree("127.0.0.1", port, 250);
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if (ok) return true;
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// eslint-disable-next-line no-await-in-loop
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await new Promise((r) => setTimeout(r, 150));
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}
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if (process.platform !== "win32") {
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for (const pid of killPids) {
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forceKillPid(pid);
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}
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for (let i = 0; i < 10; i += 1) {
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// eslint-disable-next-line no-await-in-loop
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const ok = await isPortFree("127.0.0.1", port, 250);
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if (ok) return true;
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// eslint-disable-next-line no-await-in-loop
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await new Promise((r) => setTimeout(r, 150));
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}
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}
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logPrefix(nameForLog, `端口 ${port} 仍未释放，可能有其他程序占用。`);
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return false;
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}
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function loadEnvFile(filePath) {
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if (!fs.existsSync(filePath)) return {};
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const content = fs.readFileSync(filePath, "utf8");
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return content
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.split(/\r?\n/)
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.filter((line) => line.trim() && !line.trim().startsWith("#"))
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.reduce((acc, line) => {
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const idx = line.indexOf("=");
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if (idx === -1) return acc;
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const key = line.slice(0, idx).trim();
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const value = line.slice(idx + 1).trim();
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acc[key] = value;
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return acc;
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}, {});
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}
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// 约定：全局仅使用仓库根目录的 .env.all 作为配置来源（生产优先）。
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const envAllPath = path.join(rootDir, ".env.all");
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if (!fs.existsSync(envAllPath)) {
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console.error("[system] 缺少 .env.all：请在仓库根目录创建全局唯一 env 文件后重试。");
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process.exit(1);
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}
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const envFromAll = loadEnvFile(envAllPath);
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const mergedEnv = {
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...process.env,
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...envFromAll,
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};
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function logPrefix(name, message) {
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console.log(`[${name}] ${message}`);
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}
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function startTask(task) {
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logPrefix(task.name, `启动命令：${task.command}`);
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const child = spawn(task.command, {
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cwd: task.cwd,
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stdio: "inherit",
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shell: true,
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env: mergedEnv,
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});
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child.on("exit", (code, signal) => {
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if (shuttingDown) {
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return;
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}
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const status =
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signal !== null ? `因信号 ${signal} 退出` : `退出码 ${code ?? "null"}`;
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logPrefix(task.name, `进程结束（${status}），准备清理其它任务。`);
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shutdown(code ?? 0);
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});
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child.on("error", (err) => {
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logPrefix(task.name, `启动失败：${err.message}`);
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shutdown(1);
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});
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children.push(child);
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}
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function shutdown(code) {
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if (shuttingDown) {
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return;
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}
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shuttingDown = true;
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logPrefix("system", "收到终止信号，正在关闭所有子进程…");
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for (const child of children) {
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if (!child.pid) continue;
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// Windows 下，shell 子进程常常无法可靠传播 SIGINT/SIGTERM 到孙进程（例如 uvicorn --reload）。
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// 这里优先用 taskkill /T /F 确保整个进程树被结束，避免残留占用端口导致下次启动失败。
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if (process.platform === "win32") {
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try {
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execSync(`taskkill /PID ${child.pid} /T /F`, { stdio: "ignore" });
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continue;
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} catch {
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// fallback to signals
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}
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}
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if (!child.killed) {
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child.kill("SIGINT");
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setTimeout(() => {
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if (!child.killed) {
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child.kill("SIGTERM");
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}
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}, 5000);
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}
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}
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setTimeout(() => process.exit(code), 200);
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}
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process.on("SIGINT", () => shutdown(0));
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process.on("SIGTERM", () => shutdown(0));
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async function main() {
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// 说明：你外网绑定了 3000 端口，这里默认强制使用 3000。
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// 如果检测到 3000 被占用，则自动结束旧进程后重启，以保证始终跑在 3000。
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const desiredFrontendPort = runtimePlan.publicPort;
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const frontendOwnerName = "mnote-web";
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const frontendPortOk = await ensurePortFree(desiredFrontendPort, frontendOwnerName);
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if (!frontendPortOk) {
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console.error(`前端端口 ${desiredFrontendPort} 无法释放，已中止启动。`);
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process.exit(1);
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}
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const frontendPort = desiredFrontendPort;
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const frontendUrl = `http://localhost:${frontendPort}`;
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if (skipMnoteWebGateway) {
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logPrefix("frontend", `前端地址：${frontendUrl}`);
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} else {
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logPrefix("mnote-web", `Rust gateway 公开入口：${frontendUrl}`);
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const gatewayTask = tasks.find((task) => task.name === "mnote-web");
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if (gatewayTask) {
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gatewayTask.command = runtimePlan.mnoteWebCommand;
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}
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Object.assign(mergedEnv, runtimePlan.mnoteWebEnv);
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}
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const desiredBackendPort = backendPortFromEnv;
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if (shouldStartBackend(process.env) && !process.env.BACKEND_CMD) {
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const backendPortOk = await ensurePortFree(desiredBackendPort, "backend");
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if (!backendPortOk) {
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console.error(`后端端口 ${desiredBackendPort} 无法释放，已中止启动。`);
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process.exit(1);
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}
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const backendTask = findTask("backend");
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if (!backendTask) {
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throw new Error("缺少后端任务配置");
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}
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backendTask.command = buildDefaultBackendCommand(desiredBackendPort);
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} else if (isEnabledEnv(process.env.SKIP_BACKEND)) {
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logPrefix("backend", "已跳过 FastAPI 后端（SKIP_BACKEND=1）。");
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} else if (!shouldStartBackend(process.env)) {
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}
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if (tasks.length === 0) {
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console.error("未配置任何可运行的任务，检查环境变量设置。");
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process.exit(1);
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}
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for (const task of tasks) {
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startTask(task);
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}
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}
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if (require.main === module) {
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main().catch((error) => {
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logPrefix("system", `启动失败：${error.message}`);
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process.exit(1);
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});
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}
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module.exports = {
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ensurePortFree,
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getListeningPidsByPort,
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getProcessNameByPid,
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|
isPortFree,
|
|
resolveRuntimePlan,
|
|
resolveBackendExecutable,
|
|
shouldStartBackend,
|
|
terminatePid,
|
|
};
|