我的代码如下所示：
db.js
const Sequelize = require('sequelize');
require('dotenv').config();
const fs = require('fs');
const path = require('path');
const db = {};
var sequelize = new Sequelize({
host: process.env.DB_HOST,
database: process.env.DB_NAME,
username: process.env.DB_USER_NAME,
password: process.env.DB_PASSWORD,
dialect: process.env.DB_TYPE,
port: process.env.DB_PORT,
pool: {
max: 5,
min: 0,
idle: 100000,
acquire: 50000,
evict: 50000,
handleDisconnects: true
},
operatorsAliases: false,
logging: false
});
sequelize
.authenticate()
.then(() => {
console.log('connected to database successfully')
});
sequelize.sync({
force: false
});
db.Sequelize = Sequelize;
db.sequelize = sequelize;
db.admin = require('../model/admin')(sequelize, Sequelize);
module.exports = db;
activity.js
var db = require('./../utils/db.js');
const registerAdmin = (req, res) => {
req.checkBody('email_id', 'Please enter valid email id').notEmpty().isEmail();
req.checkBody('password', 'Please enter the password').notEmpty();
req.sanitize('email_id').trim();
req.sanitize('password').trim();
const errors = req.validationErrors();
if (errors) {
console.log('.................error', errors);
let error = '';
errors.forEach(element => {
error = error + ' ' + element.msg;
});
response.sendErrorCustomMessage(res, error, "500");
} else {
checkUser(req.body.email_id).then(() => {
createUser(req.body.email_id, req.body.password, req.body.admin_role).then((info) => {
db.sequelize.connectionManager.close();
response.sendsuccessData(res, 'Admin Created', info)
}).catch((err) => {
response.sendErrorMessage(res, consts.ERROR_500);
})
}).catch((err) => {
response.sendErrorCustomMessage(res, err, consts.ERROR_500);
})
}
};
但是以某种方式却给了我如下所示的错误：
0|app | Error: ConnectionManager.getConnection was called after the connection manager was closed!
0|app | at ConnectionManager.getConnection (/home/ubuntu/s-backend/node_modules/sequelize/lib/dialects/abstract/connection-manager.js:86:29)
0|app | at Promise.try (/home/ubuntu/s-backend/node_modules/sequelize/lib/sequelize.js:554:34)
0|app | at tryCatcher (/home/ubuntu/s-backend/node_modules/bluebird/js/release/util.js:16:23)
0|app | at Function.Promise.attempt.Promise.try (/home/ubuntu/s-backend/node_modules/bluebird/js/release/method.js:39:29)
0|app | at retryParameters (/home/ubuntu/s-backend/node_modules/sequelize/lib/sequelize.js:454:48)
0|app | at /home/ubuntu/selltm-backend/node_modules/retry-as-promised/index.js:39:21
0|app | at Promise._execute (/home/ubuntu/s-backend/node_modules/bluebird/js/release/debuggability.js:303:9)
0|app | at Promise._resolveFromExecutor (/home/ubuntu/s-backend/node_modules/bluebird/js/release/promise.js:483:18)
0|app | at new Promise (/home/ubuntu/s-backend/node_modules/bluebird/js/release/promise.js:79:10)
0|app | at retryAsPromised (/home/ubuntu/s-backend/node_modules/retry-as-promised/index.js:29:10)
0|app | at Sequelize.query (/home/ubuntu/s-backend/node_modules/sequelize/lib/sequelize.js:454:12)
0|app | at QueryInterface.select (/home/ubuntu/s-backend/node_modules/sequelize/lib/query-interface.js:1104:27)
0|app | at Promise.try.then.then.then (/home/ubuntu/s-backend/node_modules/sequelize/lib/model.js:1604:34)
0|app | at tryCatcher (/home/ubuntu/s-backend/node_modules/bluebird/js/release/util.js:16:23)
0|app | at Promise._settlePromiseFromHandler (/home/ubuntu/s-backend/node_modules/bluebird/js/release/promise.js:512:31)
0|app | at Promise._settlePromise (/home/ubuntu/s-backend/node_modules/bluebird/js/release/promise.js:569:18)
0|app | at Promise._settlePromise0 (/home/ubuntu/s-backend/node_modules/bluebird/js/release/promise.js:614:10)
0|app | at Promise._settlePromises (/home/ubuntu/s-backend/node_modules/bluebird/js/release/promise.js:693:18)
0|app | at Async._drainQueue (/home/ubuntu/s-backend/node_modules/bluebird/js/release/async.js:133:16)
0|app | at Async._drainQueues (/home/ubuntu/s-backend/node_modules/bluebird/js/release/async.js:143:10)
0|app | at Immediate.Async.drainQueues (/home/ubuntu/s-backend/node_modules/bluebird/js/release/async.js:17:14)
0|app | at Immediate.args.(anonymous function) (/usr/lib/node_modules/pm2/node_modules/event-loop-inspector/index.js:138:29)
0|app | at runCallback (timers.js:794:20)
0|app | at tryOnImmediate (timers.js:752:5)
0|app | at processImmediate [as _immediateCallback] (timers.js:729:5)
使用mysql show status like 'Conn%';
它为我提供了以下指标：
+-----------------------------------+--------+
| Variable_name | Value |
+-----------------------------------+--------+
| Connection_errors_accept | 0 |
| Connection_errors_internal | 0 |
| Connection_errors_max_connections | 597 |
| Connection_errors_peer_address | 0 |
| Connection_errors_select | 0 |
| Connection_errors_tcpwrap | 0 |
| Connections | 386139 |
+-----------------------------------+--------+