36 lines
1.2 KiB
JavaScript
36 lines
1.2 KiB
JavaScript
import mysql from "mysql2";
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import config from "../config/index.js";
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import * as log4js from "../log4js.js";
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const pool = mysql.createPool({
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host: config.mysql.host,
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port: config.mysql.port,
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user: config.mysql.user,
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password: config.mysql.password,
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database: config.mysql.database,
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connectionLimit: 10,
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// 不在启动时立即建立连接，等第一次查询时再连接
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waitForConnections: true,
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enableKeepAlive: true,
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keepAliveInitialDelay: 10000,
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});
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// 监听连接错误，避免未处理的 Promise rejection 导致进程崩溃
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pool.on('connection', (connection) => {
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log4js.mysql.info(`MySQL 连接建立 [id=${connection.threadId}] ${config.mysql.host}:${config.mysql.port}`);
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});
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pool.on('error', (err) => {
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log4js.mysql.error('MySQL 连接池错误:', err.message);
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});
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const promisePool = pool.promise();
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// 健康检查：启动时 ping 一次数据库，失败只警告不崩溃
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promisePool.query('SELECT 1').then(() => {
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log4js.mysql.info(`MySQL 连接成功 ${config.mysql.host}:${config.mysql.port}/${config.mysql.database}`);
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}).catch((err) => {
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log4js.mysql.warn(`MySQL 连接失败（服务仍将继续运行）: ${err.message}`);
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});
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export default promisePool;
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