connection-manager.js
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"use strict";
var ConnectionManager
, Promise = require('../../promise');
ConnectionManager = function(dialect, sequelize) {
try {
this.lib = require(sequelize.config.dialectModulePath || 'mysql');
} catch (err) {
throw new Error('Please install mysql package manually');
}
};
ConnectionManager.prototype.connect = function(config) {
var self = this;
return new Promise(function (resolve, reject) {
var connectionConfig = {
host: config.host,
port: config.port,
user: config.username,
password: config.password,
database: config.database,
timezone: 'Z'
};
if (config.dialectOptions) {
Object.keys(config.dialectOptions).forEach(function(key) {
connectionConfig[key] = config.dialectOptions[key];
});
}
var connection = self.lib.createConnection(connectionConfig);
connection.connect(function(err) {
if (err) {
switch (err.code) {
case 'ECONNREFUSED':
case 'ER_ACCESS_D2ENIED_ERROR':
reject('Failed to authenticate for MySQL. Please double check your settings.');
break;
case 'ENOTFOUND':
case 'EHOSTUNREACH':
case 'EINVAL':
reject('Failed to find MySQL server. Please double check your settings.');
break;
default:
reject(err);
break;
}
return;
}
resolve(connection);
});
}).tap(function (connection) {
connection.query("SET time_zone = '+0:00'");
});
};
ConnectionManager.prototype.disconnect = function(connection) {
return new Promise(function (resolve, reject) {
connection.end(function(err) {
if (err) return reject(err);
resolve();
});
});
};
ConnectionManager.prototype.validate = function(connection) {
return connection && connection.state !== 'disconnected';
};
module.exports = ConnectionManager;