93 lines
3.1 KiB
JavaScript
93 lines
3.1 KiB
JavaScript
/*
|
|
*
|
|
* (c) Copyright Ascensio System Limited 2010-2020
|
|
*
|
|
* This program is freeware. You can redistribute it and/or modify it under the terms of the GNU
|
|
* General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html).
|
|
* In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that
|
|
* Ascensio System SIA expressly excludes the warranty of non-infringement of any third-party rights.
|
|
*
|
|
* THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
|
|
* FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
|
|
*
|
|
* You can contact Ascensio System SIA by email at sales@onlyoffice.com
|
|
*
|
|
* The interactive user interfaces in modified source and object code versions of ONLYOFFICE must display
|
|
* Appropriate Legal Notices, as required under Section 5 of the GNU GPL version 3.
|
|
*
|
|
* Pursuant to Section 7 § 3(b) of the GNU GPL you must retain the original ONLYOFFICE logo which contains
|
|
* relevant author attributions when distributing the software. If the display of the logo in its graphic
|
|
* form is not reasonably feasible for technical reasons, you must include the words "Powered by ONLYOFFICE"
|
|
* in every copy of the program you distribute.
|
|
* Pursuant to Section 7 § 3(e) we decline to grant you any rights under trademark law for use of our trademarks.
|
|
*
|
|
*/
|
|
|
|
|
|
const sql = require('mysql2');
|
|
const log = require('./log');
|
|
const config = require('../config');
|
|
const co = require('co');
|
|
|
|
var connection;
|
|
|
|
function createNewConnection() {
|
|
return new Promise((resolve, reject) => {
|
|
log.info("establishing new connection");
|
|
connection = sql.createConnection(config.get("sql"));
|
|
connect().then(resolve).catch(reject);
|
|
connection.on('error', onError);
|
|
});
|
|
}
|
|
|
|
function connect() {
|
|
return new Promise((resolve, reject) => connection.connect(function(err) {
|
|
if (err) {
|
|
connection = null;
|
|
reject(err);
|
|
return;
|
|
}
|
|
|
|
log.info("connected to sql");
|
|
resolve();
|
|
}));
|
|
}
|
|
|
|
function reconnect() {
|
|
co(function* () {
|
|
var shouldReconnect = true;
|
|
var attempts = 0;
|
|
|
|
while(shouldReconnect) {
|
|
try {
|
|
yield new Promise((resolve, reject) => setTimeout(resolve, 1000 * 5));
|
|
attempts++;
|
|
log.warn("reconnecting to sql, attempt: " + attempts);
|
|
yield createNewConnection();
|
|
shouldReconnect = false;
|
|
} catch(err) {
|
|
log.error(err);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
function onError(err) {
|
|
log.error("sql error: " + err.code);
|
|
if (err.fatal) {
|
|
reconnect();
|
|
}
|
|
}
|
|
|
|
const query = (query, params) => new Promise((resolve, reject) => {
|
|
co(function* () {
|
|
if (!connection) yield createNewConnection();
|
|
}).catch(reject);
|
|
|
|
connection.query(query, params, function(err, res) {
|
|
if (err) reject(err);
|
|
resolve(res);
|
|
});
|
|
});
|
|
|
|
module.exports = query; |