inint

module/server/mysql/gameDB.js

@@ -0,0 +1,46 @@
+/**
+ * 游戏区服动态数据库连接工具
+ *
+ * 游戏每个区服对应独立的数据库 mir_actor_s{serverId}
+ * 该模块根据 serverId 动态创建连接池（带缓存，同一区服复用连接）
+ *
+ * 使用示例：
+ *   import getGameDB from '../mysql/gameDB.js'
+ *   const db = getGameDB(1)
+ *   const [rows] = await db.query('SELECT ...')
+ */
+
+import mysql from 'mysql2'
+import config from '../config/index.js'
+import * as log4js from '../log4js.js'
+
+// 连接池缓存，避免对同一区服重复创建
+const poolCache = new Map()
+
+/**
+ * 获取指定区服的 MySQL 连接池（Promise 包装）
+ * @param {number} serverId  区服 ID
+ * @returns {import('mysql2/promise').Pool}
+ */
+export default function getGameDB(serverId) {
+  const dbName = `mir_actor_s${serverId}`
+  if (poolCache.has(dbName)) return poolCache.get(dbName)
+
+  const pool = mysql.createPool({
+    host: config.game.dbHost || config.mysql.host,
+    port: config.game.dbPort || config.mysql.port,
+    user: config.game.dbUser || config.mysql.user,
+    password: config.game.dbPassword || config.mysql.password,
+    database: dbName,
+    connectionLimit: 5,
+    waitForConnections: true,
+  })
+
+  pool.on('error', (err) => {
+    log4js.mysql.error(`[${dbName}] 连接池错误:`, err.message)
+  })
+
+  const promisePool = pool.promise()
+  poolCache.set(dbName, promisePool)
+  return promisePool
+}

module/server/mysql/index.js

@@ -7,18 +7,29 @@ const pool = mysql.createPool({
   port: config.mysql.port,
   user: config.mysql.user,
   password: config.mysql.password,
+  database: config.mysql.database,
   connectionLimit: 10,
-  queryFormat: function (sql, values) {
-    const opts = { sql, values }
-    this._resolveNamedPlaceholders(opts)
-    log4js.mysql.debug(opts.sql, opts.values)
-    return mysql.format(
-      opts.sql,
-      opts.values,
-      this.config.stringifyObjects,
-      this.config.timezone
-    )
-  }
+  // 不在启动时立即建立连接，等第一次查询时再连接
+  waitForConnections: true,
+  enableKeepAlive: true,
+  keepAliveInitialDelay: 10000,
 });
 
-export default pool.promise();
+// 监听连接错误，避免未处理的 Promise rejection 导致进程崩溃
+pool.on('connection', (connection) => {
+  log4js.mysql.info(`MySQL 连接建立 [id=${connection.threadId}] ${config.mysql.host}:${config.mysql.port}`);
+});
+pool.on('error', (err) => {
+  log4js.mysql.error('MySQL 连接池错误:', err.message);
+});
+
+const promisePool = pool.promise();
+
+// 健康检查：启动时 ping 一次数据库，失败只警告不崩溃
+promisePool.query('SELECT 1').then(() => {
+  log4js.mysql.info(`MySQL 连接成功 ${config.mysql.host}:${config.mysql.port}/${config.mysql.database}`);
+}).catch((err) => {
+  log4js.mysql.warn(`MySQL 连接失败（服务仍将继续运行）: ${err.message}`);
+});
+
+export default promisePool;