promise-mysql-native
Version:
A Promise wrapper for node-mysql
123 lines (102 loc) • 3.77 kB
JavaScript
var mysql = require('mysql'),
promiseCallback = require('./helper').promiseCallback;
/**
* Constructor
* @param {object} config - The configuration object
* @param {object} _connection - Mysql-Connection, only used internaly by the pool object
*/
var connection = function(config, _connection){
var self = this,
connect = function(resolve, reject) {
if (_connection) {
self.connection = _connection;
resolve();
} else {
self.connection = mysql.createConnection(self.config);
self.connection.connect(
function(err){
if (err) {
self.connection.err = err;
if (typeof reject === 'function') {
return reject(err);
} else {
setTimeout(function(){
connect();
}, 2000);
return;
}
} else {
delete self.connection.err;
if (typeof resolve === 'function') {
return resolve();
}
}
}
);
self.connection.on('error', function(err) {
console.log('db error', err);
self.connection.err = err;
if(err.code === 'PROTOCOL_CONNECTION_LOST' || err.code === 'ECONNRESET' || err.code === 'PROTOCOL_ENQUEUE_AFTER_FATAL_ERROR') {
connect();
}
});
}
};
this.config = config;
return new Promise(function(resolve, reject) {
connect(
function(){
return resolve(self);
},
function(err){
return reject(err);
}
);
});
}
connection.prototype.query = function(sql, values) {
return promiseCallback.apply(this.connection, ['query', arguments]);
};
connection.prototype.queryStream = function(sql, values) {
return this.connection.query(sql, values);
};
connection.prototype.beginTransaction = function() {
return promiseCallback.apply(this.connection, ['beginTransaction', arguments]);
};
connection.prototype.commit = function() {
return promiseCallback.apply(this.connection, ['commit', arguments]);
};
connection.prototype.rollback = function() {
return promiseCallback.apply(this.connection, ['rollback', arguments]);
};
connection.prototype.changeUser = function(data) {
return promiseCallback.apply(this.connection, ['changeUser', arguments]);
};
connection.prototype.ping = function(data) {
return promiseCallback.apply(this.connection, ['ping', arguments]);
};
connection.prototype.statistics = function(data) {
return promiseCallback.apply(this.connection, ['statistics', arguments]);
};
connection.prototype.end = function(data) {
return promiseCallback.apply(this.connection, ['end', arguments]);
};
connection.prototype.destroy = function() {
this.connection.destroy();
};
connection.prototype.pause = function() {
this.connection.pause();
};
connection.prototype.resume = function() {
this.connection.resume();
};
connection.prototype.escape = function(value) {
return this.connection.escape(value);
};
connection.prototype.escapeId = function(value) {
return this.connection.escapeId(value);
};
connection.prototype.format = function(sql, values) {
return this.connection.format(sql, values);
};
module.exports = connection;