79 lines
1.9 KiB
JavaScript
79 lines
1.9 KiB
JavaScript
'use strict';
|
|
|
|
const Adapter = require('../Adapter');
|
|
const getArgs = require('getargs');
|
|
const helpers = require('../helpers');
|
|
const pg = require('pg');
|
|
const url = require('url');
|
|
|
|
class Pg extends Adapter {
|
|
|
|
constructor(config) {
|
|
let instance = null;
|
|
let connectionString = '';
|
|
if (helpers.isObject(config)) {
|
|
let host = config.host || 'localhost';
|
|
let user = config.user || 'postgres';
|
|
let password = `:${config.password}` || '';
|
|
let port = config.port || 5432;
|
|
|
|
let conn = {
|
|
protocol: 'postgres',
|
|
slashes: true,
|
|
host: `${host}:${port}`,
|
|
auth: `${user}${password}`,
|
|
pathname: config.database,
|
|
};
|
|
|
|
connectionString = url.format(conn);
|
|
} else if (helpers.isString(config)) {
|
|
connectionString = config;
|
|
}
|
|
|
|
if (connectionString !== '') {
|
|
let connected = false;
|
|
instance = new pg.Client(connectionString);
|
|
|
|
instance.connect(err => {
|
|
connected = true;
|
|
});
|
|
}
|
|
|
|
super(instance);
|
|
}
|
|
|
|
/**
|
|
* Run the sql query as a prepared statement
|
|
*
|
|
* @param {String} sql - The sql with placeholders
|
|
* @param {Array} params - The values to insert into the query
|
|
* @param {Function} [callback] - Callback to run when a response is recieved
|
|
* @return {void|Promise} - Returns a promise if no callback is provided
|
|
*/
|
|
execute(/*sql, params, callback*/) {
|
|
let args = getArgs('sql:string, [params]:array, [callback]:function', arguments);
|
|
|
|
// Replace question marks with numbered placeholders, because this adapter is different...
|
|
let count = 0;
|
|
args.sql = args.sql.replace(/\?/g, () => {
|
|
count++;
|
|
return `$${count}`;
|
|
});
|
|
|
|
if (! args.callback) {
|
|
return new Promise((resolve, reject) => {
|
|
this.instance.query(args.sql, args.params, (err, result) => {
|
|
if (err) {
|
|
return reject(err);
|
|
}
|
|
|
|
return resolve(result);
|
|
});
|
|
});
|
|
}
|
|
|
|
return this.instance.query(args.sql, args.params, args.callback);
|
|
}
|
|
}
|
|
|
|
module.exports = Pg; |