connection-manager.js
2.52 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
"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 || 5432;
try {
this.lib = sequelize.config.native ? require(sequelize.config.dialectModulePath || 'pg').native : require(sequelize.config.dialectModulePath || 'pg');
} catch (err) {
throw new Error('Please install postgres package manually');
}
};
Utils._.extend(ConnectionManager.prototype, AbstractConnectionManager.prototype);
ConnectionManager.prototype.connect = function(config) {
var self = this;
return new Promise(function (resolve, reject) {
var connectionString = self.sequelize.getQueryInterface().QueryGenerator.databaseConnectionUri(config)
, connection = new self.lib.Client(connectionString)
, responded = false;
connection.connect(function(err) {
if (err) {
if (err.code) {
switch (err.code) {
case 'ECONNREFUSED':
reject(new Error('Failed to authenticate for PostgresSQL. Please double check your settings.'));
break;
case 'ENOTFOUND':
case 'EHOSTUNREACH':
case 'EINVAL':
reject(new Error('Failed to find PostgresSQL server. Please double check your settings.'));
break;
default:
reject(err);
break;
}
} else {
reject(new Error(err.message));
}
return;
}
responded = true;
resolve(connection);
});
// If we didn't ever hear from the client.connect() callback the connection timeout, node-postgres does not treat this as an error since no active query was ever emitted
connection.on('end', function () {
if (!responded) {
reject(new Error('Connection timed out'));
}
});
}).tap(function (connection) {
if (self.sequelize.config.keepDefaultTimezone) return;
return new Promise(function (resolve, reject) {
connection.query("SET TIME ZONE 'UTC'").on('error', function (err) {
reject(err);
}).on('end', function () {
resolve();
});
});
});
};
ConnectionManager.prototype.disconnect = function(connection) {
return new Promise(function (resolve, reject) {
connection.end();
resolve();
});
};
module.exports = ConnectionManager;