midas-core/distribution/Extractor/MySQLExtractor.js

Enrich data with APIs

'use strict';

Object.defineProperty(exports, "__esModule", {
				value: true
});
exports.default = undefined;

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _Extractor2 = require('./Extractor');

var _Extractor3 = _interopRequireDefault(_Extractor2);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var SqlString = require('sqlstring');
var mysql = require('mysql2/promise');

// MySQL handler

var MySQLExtractor = function (_Extractor) {
				_inherits(MySQLExtractor, _Extractor);

				function MySQLExtractor(config) {
								_classCallCheck(this, MySQLExtractor);

								return _possibleConstructorReturn(this, (MySQLExtractor.__proto__ || Object.getPrototypeOf(MySQLExtractor)).call(this, config));
				}

				_createClass(MySQLExtractor, [{
								key: 'get_data_sync',
								value: function get_data_sync() {
												return read_json_sync(this.config._source.path);
								}
				}, {
								key: 'get_data_promise',
								value: async function get_data_promise() {

												var db_config = {
																host: this.config._source.host,
																port: this.config._source.port,
																user: this.config._source.user,
																password: this.config._source.password,
																database: this.config._source.database
												};

												// create the connection
												var connection = await mysql.createConnection(db_config);

												// query database

												var _ref = await connection.execute('SELECT * FROM ' + SqlString.escapeId(this.config._source.table)),
												    _ref2 = _slicedToArray(_ref, 2),
												    rows = _ref2[0],
												    fields = _ref2[1];

												// close connection after query


												connection.close();

												return rows;
								}
				}]);

				return MySQLExtractor;
}(_Extractor3.default);

exports.default = MySQLExtractor;