91 lines
2.1 KiB
JavaScript
91 lines
2.1 KiB
JavaScript
const mysql = require('mysql');
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const config = require('../config.json');
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class MySQLPool {
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constructor() {
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this._user = '';
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this._password = '';
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this._host = '';
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this._port = 3306;
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this._database = '';
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this._socketPath = '/var/lib/mysql/mysql.sock'
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this._pool = null;
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this.autoclose = false;
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}
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createPool(){
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this._pool = mysql.createPool({
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connectionLimit: 30,
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user: this._user,
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password: this._password,
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host: this._host,
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port: this._port,
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socketPath: this._socketPath
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});
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}
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async getConn() {
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return new Promise((resolve, reject) => {
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this._pool.getConnection((err, conn) => {
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if(err) return reject(err);
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return resolve(conn)
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})
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})
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}
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formatQuery(query, arg) {
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return mysql.format(query, arg);
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}
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escape(val) {
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return mysql.escape(val);
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}
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recordPage(rows, page, maxPage) {
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if (!page || !isFinite(page) || page < 1) page = 1;
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let totalpage = Math.ceil(rows / maxPage);
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let prevpage = page - 1;
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let nextpage = page + 1;
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if (prevpage < 1) prevpage = 1;
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if (nextpage > totalpage) nextpage = totalpage;
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let rec_start = (page - 1) * maxPage + 1
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let rec_end = (rec_start + maxPage - 1);
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if (rec_end > rows) rec_end = rows;
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let json = {
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rec_start,
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rec_end,
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total: rows,
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prevpage,
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nextpage,
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totalpage,
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page
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};
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return json;
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}
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set user(str) { this._user = str; }
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set host(str) { this._host = str; }
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set password(str) { this._password = str; }
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set port(str) { this._port = str; }
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set database(str) { this._database = str; }
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}
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let Pool = (()=>{
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let pool = new MySQLPool();
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pool.user = config.db.user;
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pool.password = config.db.pass;
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pool.host = config.db.host;
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pool.port = config.db.port;
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pool.createPool();
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return pool
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})()
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module.exports = Pool; |