deep-search/lib.es6/Client/Elasticsearch.js

DEEP Search Library

/**
 * Created by mgoria on 3/4/16.
 */

'use strict';

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

var _deepCore = require('deep-core');

var _deepCore2 = _interopRequireDefault(_deepCore);

var _elasticsearch = require('elasticsearch');

var _elasticsearch2 = _interopRequireDefault(_elasticsearch);

var _Aws4SignedHttpConnection = require('./Connection/Aws4SignedHttpConnection');

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

/**
 * Elasticsearch client
 * @see https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/index.html
 */
class Elasticsearch {

  /**
   * @param {String} host
   * @param {Function|null} decorator
   * @param {Boolean} useAws4Signature
   * @param {String} apiVersion
   */
  constructor(host, decorator = null, useAws4Signature = true, apiVersion = Elasticsearch.API_VERSION) {
    this._host = host;
    this._decorator = decorator;

    let clientOpts = {};
    clientOpts.host = this._host;
    clientOpts.apiVersion = apiVersion;

    if (useAws4Signature) {
      clientOpts.connectionClass = _Aws4SignedHttpConnection.Aws4SignedHttpConnection.createPrototype();
    }

    this._esClient = new _elasticsearch2.default.Client(clientOpts);

    this._proxy(this, this._esClient, this._decorator);
  }

  /**
   * @param {Elasticsearch} target
   * @param {elasticsearch} handler
   * @param {Function} decorator
   * @param {Array} methods
   * @private
   */
  _proxy(target, handler, decorator, methods = Elasticsearch.API_METHODS) {
    let proxy = new _deepCore2.default.Generic.MethodsProxy(target).decorate(decorator);
    proxy.proxyOverride(handler, ...methods);
    proxy.proxyProperties(handler);
  }

  /**
   * @returns {Object[]}
   */
  static get API_METHODS() {
    let esApis = require('elasticsearch/src/lib/apis');

    return Object.keys(esApis[Elasticsearch.API_VERSION]);
  }

  /**
   * @returns {String}
   * 
   * @note - If you want to change this version do update deep-search/node-bin/cleanup.sh also
   */
  static get API_VERSION() {
    return '2.3';
  }
}
exports.Elasticsearch = Elasticsearch;