connection-manager.js
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"use strict";
var AbstractConnectionManager = require('../abstract/connection-manager')
, ConnectionManager
, Utils = require('../../utils')
, Promise = require('../../promise');
ConnectionManager = function(dialect, sequelize) {
AbstractConnectionManager.call(this, dialect, sequelize);
this.sequelize = sequelize;
this.sequelize.config.port = this.sequelize.config.port || 1433;
try {
this.lib = require(sequelize.config.dialectModulePath || 'tedious');
} catch (err) {
throw new Error('Please install tedious package manually');
}
};
Utils._.extend(ConnectionManager.prototype, AbstractConnectionManager.prototype);
ConnectionManager.prototype.connect = function(config) {
var self = this;
return new Promise(function (resolve, reject) {
var connectionConfig = {
userName: config.username,
password: config.password,
server: config.host,
/* domain: 'DOMAIN' */
options: {
port: config.port,
database: config.database,
}
};
if (config.dialectOptions) {
Object.keys(config.dialectOptions).forEach(function(key) {
connectionConfig[key] = config.dialectOptions[key];
});
}
var connection = new self.lib.Connection(connectionConfig);
connection.lib = self.lib;
connection.on('connect', function(err) {
if (err) {
switch (err.code) {
case 'ELOGIN':
reject('Login failed.');
break;
case 'ETIMEOUT':
reject('Connection timeout.');
break;
case 'EALREADYCONNECTED':
reject('Database is already connected!');
break;
case 'EALREADYCONNECTING':
reject('Already connecting to database!');
break;
case 'EINSTLOOKUP':
reject('Instance lookup failed.');
break;
case 'ESOCKET':
reject('Socket error.');
break;
default:
reject(err);
break;
}
return;
}
resolve(connection);
});
});
};
ConnectionManager.prototype.disconnect = function(connection) {
// Dont disconnect a connection that is already disconnected
if (!connection.connected) {
return Promise.resolve();
}
return new Promise(function (resolve, reject) {
connection.on('error', function(err) {
// TODO: error checking
reject();
});
connection.on('end', resolve);
connection.close();
});
};
ConnectionManager.prototype.validate = function(connection) {
return connection && connection.loggedIn;
};
module.exports = ConnectionManager;