@elastic.io/odata-library/lib/authentication/NoAuthRestClient.js

Re-usable OData client library

/* eslint-disable no-param-reassign,  no-underscore-dangle, class-methods-use-this */
const { promisify } = require('util');
const request = promisify(require('request'));
const removeTrailingSlash = require('remove-trailing-slash');
const removeLeadingSlash = require('remove-leading-slash');
const debug = require('debug')('statelessAuthenticationRestClients');

module.exports = class NoAuthRestClient {
  constructor(emitter, cfg) {
    this.emitter = emitter;
    this.cfg = cfg;
  }

  // eslint-disable-next-line no-unused-vars
  _addAuthenticationToRequestOptions(requestOptions) {}

  _handleRestResponse(response) {
    if (response.statusCode >= 400) {
      throw new Error(`Error in making request to ${response.request.uri.href} Status code: ${response.statusCode}, Body: ${JSON.stringify(response.body)}`);
    }

    debug(`Response statusCode: ${response.statusCode}`);
    return response.body;
  }

  // options expects the following sub-variables:
  //    url: Url to call
  //    method: HTTP verb to use
  //    body: Body of the request, if applicable. Defaults to undefined.
  //    headers: Any HTTP headers to add to the request. Defaults to {}
  //    urlIsSegment: Whether to append to the base server url or
  //    if the provided URL is an absolute path. Defaults to true
  async makeRequest(options) {
    const {
      url, method, body, headers = {}, urlIsSegment = true, isJson = true,
    } = options;
    const urlToCall = urlIsSegment
      ? `${removeTrailingSlash(this.cfg.resourceServerUrl.trim())}/${removeLeadingSlash(url.trim())}` // Trim trailing or leading '/'
      : url.trim();
    debug(`Making ${method} request...`);

    const requestOptions = {
      url: urlToCall,
      method,
      json: isJson,
      body,
      headers,
    };

    // eslint-disable-next-line no-underscore-dangle
    await this._addAuthenticationToRequestOptions(requestOptions);

    const response = await request(requestOptions);

    return this._handleRestResponse(response);
  }
};