UNPKG

43 kBJavaScriptView Raw
1'use strict';
2
3var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
4
5var _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; }; }();
6
7var _axios = require('axios');
8
9var _axios2 = _interopRequireDefault(_axios);
10
11var _debug = require('debug');
12
13var _debug2 = _interopRequireDefault(_debug);
14
15var _jsBase = require('js-base64');
16
17function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
18
19function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }
20
21function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
22
23function _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; }
24
25function _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; } /**
26 * @file
27 * @copyright 2016 Yahoo Inc.
28 * @license Licensed under {@link https://spdx.org/licenses/BSD-3-Clause-Clear.html BSD-3-Clause-Clear}.
29 * Github.js is freely distributable.
30 */
31
32var log = (0, _debug2.default)('github:request');
33
34/**
35 * The error structure returned when a network call fails
36 */
37
38var ResponseError = function (_Error) {
39 _inherits(ResponseError, _Error);
40
41 /**
42 * Construct a new ResponseError
43 * @param {string} message - an message to return instead of the the default error message
44 * @param {string} path - the requested path
45 * @param {Object} response - the object returned by Axios
46 */
47 function ResponseError(message, path, response) {
48 _classCallCheck(this, ResponseError);
49
50 var _this = _possibleConstructorReturn(this, (ResponseError.__proto__ || Object.getPrototypeOf(ResponseError)).call(this, message));
51
52 _this.path = path;
53 _this.request = response.config;
54 _this.response = (response || {}).response || response;
55 _this.status = response.status;
56 return _this;
57 }
58
59 return ResponseError;
60}(Error);
61
62/**
63 * Requestable wraps the logic for making http requests to the API
64 */
65
66
67var Requestable = function () {
68 /**
69 * Either a username and password or an oauth token for Github
70 * @typedef {Object} Requestable.auth
71 * @prop {string} [username] - the Github username
72 * @prop {string} [password] - the user's password
73 * @prop {token} [token] - an OAuth token
74 */
75 /**
76 * Initialize the http internals.
77 * @param {Requestable.auth} [auth] - the credentials to authenticate to Github. If auth is
78 * not provided request will be made unauthenticated
79 * @param {string} [apiBase=https://api.github.com] - the base Github API URL
80 * @param {string} [AcceptHeader=v3] - the accept header for the requests
81 */
82 function Requestable(auth, apiBase, AcceptHeader) {
83 _classCallCheck(this, Requestable);
84
85 this.__apiBase = apiBase || 'https://api.github.com';
86 this.__auth = {
87 token: auth.token,
88 username: auth.username,
89 password: auth.password
90 };
91 this.__AcceptHeader = AcceptHeader || 'v3';
92
93 if (auth.token) {
94 this.__authorizationHeader = 'token ' + auth.token;
95 } else if (auth.username && auth.password) {
96 this.__authorizationHeader = 'Basic ' + _jsBase.Base64.encode(auth.username + ':' + auth.password);
97 }
98 }
99
100 /**
101 * Compute the URL to use to make a request.
102 * @private
103 * @param {string} path - either a URL relative to the API base or an absolute URL
104 * @return {string} - the URL to use
105 */
106
107
108 _createClass(Requestable, [{
109 key: '__getURL',
110 value: function __getURL(path) {
111 var url = path;
112
113 if (path.indexOf('//') === -1) {
114 url = this.__apiBase + path;
115 }
116
117 var newCacheBuster = 'timestamp=' + new Date().getTime();
118 return url.replace(/(timestamp=\d+)/, newCacheBuster);
119 }
120
121 /**
122 * Compute the headers required for an API request.
123 * @private
124 * @param {boolean} raw - if the request should be treated as JSON or as a raw request
125 * @param {string} AcceptHeader - the accept header for the request
126 * @return {Object} - the headers to use in the request
127 */
128
129 }, {
130 key: '__getRequestHeaders',
131 value: function __getRequestHeaders(raw, AcceptHeader) {
132 var headers = {
133 'Content-Type': 'application/json;charset=UTF-8',
134 'Accept': 'application/vnd.github.' + (AcceptHeader || this.__AcceptHeader)
135 };
136
137 if (raw) {
138 headers.Accept += '.raw';
139 }
140 headers.Accept += '+json';
141
142 if (this.__authorizationHeader) {
143 headers.Authorization = this.__authorizationHeader;
144 }
145
146 return headers;
147 }
148
149 /**
150 * Sets the default options for API requests
151 * @protected
152 * @param {Object} [requestOptions={}] - the current options for the request
153 * @return {Object} - the options to pass to the request
154 */
155
156 }, {
157 key: '_getOptionsWithDefaults',
158 value: function _getOptionsWithDefaults() {
159 var requestOptions = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
160
161 if (!(requestOptions.visibility || requestOptions.affiliation)) {
162 requestOptions.type = requestOptions.type || 'all';
163 }
164 requestOptions.sort = requestOptions.sort || 'updated';
165 requestOptions.per_page = requestOptions.per_page || '100'; // eslint-disable-line
166
167 return requestOptions;
168 }
169
170 /**
171 * if a `Date` is passed to this function it will be converted to an ISO string
172 * @param {*} date - the object to attempt to coerce into an ISO date string
173 * @return {string} - the ISO representation of `date` or whatever was passed in if it was not a date
174 */
175
176 }, {
177 key: '_dateToISO',
178 value: function _dateToISO(date) {
179 if (date && date instanceof Date) {
180 date = date.toISOString();
181 }
182
183 return date;
184 }
185
186 /**
187 * A function that receives the result of the API request.
188 * @callback Requestable.callback
189 * @param {Requestable.Error} error - the error returned by the API or `null`
190 * @param {(Object|true)} result - the data returned by the API or `true` if the API returns `204 No Content`
191 * @param {Object} request - the raw {@linkcode https://github.com/mzabriskie/axios#response-schema Response}
192 */
193 /**
194 * Make a request.
195 * @param {string} method - the method for the request (GET, PUT, POST, DELETE)
196 * @param {string} path - the path for the request
197 * @param {*} [data] - the data to send to the server. For HTTP methods that don't have a body the data
198 * will be sent as query parameters
199 * @param {Requestable.callback} [cb] - the callback for the request
200 * @param {boolean} [raw=false] - if the request should be sent as raw. If this is a falsy value then the
201 * request will be made as JSON
202 * @return {Promise} - the Promise for the http request
203 */
204
205 }, {
206 key: '_request',
207 value: function _request(method, path, data, cb, raw) {
208 var url = this.__getURL(path);
209
210 var AcceptHeader = (data || {}).AcceptHeader;
211 if (AcceptHeader) {
212 delete data.AcceptHeader;
213 }
214 var headers = this.__getRequestHeaders(raw, AcceptHeader);
215
216 var queryParams = {};
217
218 var shouldUseDataAsParams = data && (typeof data === 'undefined' ? 'undefined' : _typeof(data)) === 'object' && methodHasNoBody(method);
219 if (shouldUseDataAsParams) {
220 queryParams = data;
221 data = undefined;
222 }
223
224 var config = {
225 url: url,
226 method: method,
227 headers: headers,
228 params: queryParams,
229 data: data,
230 responseType: raw ? 'text' : 'json'
231 };
232
233 log(config.method + ' to ' + config.url);
234 var requestPromise = (0, _axios2.default)(config).catch(callbackErrorOrThrow(cb, path));
235
236 if (cb) {
237 requestPromise.then(function (response) {
238 if (response.data && Object.keys(response.data).length > 0) {
239 // When data has results
240 cb(null, response.data, response);
241 } else if (config.method !== 'GET' && Object.keys(response.data).length < 1) {
242 // True when successful submit a request and receive a empty object
243 cb(null, response.status < 300, response);
244 } else {
245 cb(null, response.data, response);
246 }
247 });
248 }
249
250 return requestPromise;
251 }
252
253 /**
254 * Make a request to an endpoint the returns 204 when true and 404 when false
255 * @param {string} path - the path to request
256 * @param {Object} data - any query parameters for the request
257 * @param {Requestable.callback} cb - the callback that will receive `true` or `false`
258 * @param {method} [method=GET] - HTTP Method to use
259 * @return {Promise} - the promise for the http request
260 */
261
262 }, {
263 key: '_request204or404',
264 value: function _request204or404(path, data, cb) {
265 var method = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 'GET';
266
267 return this._request(method, path, data).then(function success(response) {
268 if (cb) {
269 cb(null, true, response);
270 }
271 return true;
272 }, function failure(response) {
273 if (response.response.status === 404) {
274 if (cb) {
275 cb(null, false, response);
276 }
277 return false;
278 }
279
280 if (cb) {
281 cb(response);
282 }
283 throw response;
284 });
285 }
286
287 /**
288 * Make a request and fetch all the available data. Github will paginate responses so for queries
289 * that might span multiple pages this method is preferred to {@link Requestable#request}
290 * @param {string} path - the path to request
291 * @param {Object} options - the query parameters to include
292 * @param {Requestable.callback} [cb] - the function to receive the data. The returned data will always be an array.
293 * @param {Object[]} results - the partial results. This argument is intended for internal use only.
294 * @return {Promise} - a promise which will resolve when all pages have been fetched
295 * @deprecated This will be folded into {@link Requestable#_request} in the 2.0 release.
296 */
297
298 }, {
299 key: '_requestAllPages',
300 value: function _requestAllPages(path, options, cb, results) {
301 var _this2 = this;
302
303 results = results || [];
304
305 return this._request('GET', path, options).then(function (response) {
306 var _results;
307
308 var thisGroup = void 0;
309 if (response.data instanceof Array) {
310 thisGroup = response.data;
311 } else if (response.data.items instanceof Array) {
312 thisGroup = response.data.items;
313 } else {
314 var message = 'cannot figure out how to append ' + response.data + ' to the result set';
315 throw new ResponseError(message, path, response);
316 }
317 (_results = results).push.apply(_results, _toConsumableArray(thisGroup));
318
319 var nextUrl = getNextPage(response.headers.link);
320 if (nextUrl) {
321 if (!options) {
322 options = {};
323 }
324 options.page = parseInt(nextUrl.match(/([&\?]page=[0-9]*)/g).shift().split('=').pop());
325 if (!(options && typeof options.page !== 'number')) {
326 log('getting next page: ' + nextUrl);
327 return _this2._requestAllPages(nextUrl, options, cb, results);
328 }
329 }
330
331 if (cb) {
332 cb(null, results, response);
333 }
334
335 response.data = results;
336 return response;
337 }).catch(callbackErrorOrThrow(cb, path));
338 }
339 }]);
340
341 return Requestable;
342}();
343
344module.exports = Requestable;
345
346// ////////////////////////// //
347// Private helper functions //
348// ////////////////////////// //
349var METHODS_WITH_NO_BODY = ['GET', 'HEAD', 'DELETE'];
350function methodHasNoBody(method) {
351 return METHODS_WITH_NO_BODY.indexOf(method) !== -1;
352}
353
354function getNextPage() {
355 var linksHeader = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';
356
357 var links = linksHeader.split(/\s*,\s*/); // splits and strips the urls
358 return links.reduce(function (nextUrl, link) {
359 if (link.search(/rel="next"/) !== -1) {
360 return (link.match(/<(.*)>/) || [])[1];
361 }
362
363 return nextUrl;
364 }, undefined);
365}
366
367function callbackErrorOrThrow(cb, path) {
368 return function handler(object) {
369 var error = void 0;
370 if (object.hasOwnProperty('config')) {
371 var _object$response = object.response,
372 status = _object$response.status,
373 statusText = _object$response.statusText,
374 _object$config = object.config,
375 method = _object$config.method,
376 url = _object$config.url;
377
378 var message = status + ' error making request ' + method + ' ' + url + ': "' + statusText + '"';
379 error = new ResponseError(message, path, object);
380 log(message + ' ' + JSON.stringify(object.data));
381 } else {
382 error = object;
383 }
384 if (cb) {
385 log('going to error callback');
386 cb(error);
387 } else {
388 log('throwing error');
389 throw error;
390 }
391 };
392}
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* @file\n * @copyright  2016 Yahoo Inc.\n * @license    Licensed under {@link https://spdx.org/licenses/BSD-3-Clause-Clear.html BSD-3-Clause-Clear}.\n *             Github.js is freely distributable.\n */\n\nimport axios from 'axios';\nimport debug from 'debug';\nimport {Base64} from 'js-base64';\n\nconst log = debug('github:request');\n\n/**\n * The error structure returned when a network call fails\n */\nclass ResponseError extends Error {\n   /**\n    * Construct a new ResponseError\n    * @param {string} message - an message to return instead of the the default error message\n    * @param {string} path - the requested path\n    * @param {Object} response - the object returned by Axios\n    */\n   constructor(message, path, response) {\n      super(message);\n      this.path = path;\n      this.request = response.config;\n      this.response = (response || {}).response || response;\n      this.status = response.status;\n   }\n}\n\n/**\n * Requestable wraps the logic for making http requests to the API\n */\nclass Requestable {\n   /**\n    * Either a username and password or an oauth token for Github\n    * @typedef {Object} Requestable.auth\n    * @prop {string} [username] - the Github username\n    * @prop {string} [password] - the user's password\n    * @prop {token} [token] - an OAuth token\n    */\n   /**\n    * Initialize the http internals.\n    * @param {Requestable.auth} [auth] - the credentials to authenticate to Github. If auth is\n    *                                  not provided request will be made unauthenticated\n    * @param {string} [apiBase=https://api.github.com] - the base Github API URL\n    * @param {string} [AcceptHeader=v3] - the accept header for the requests\n    */\n   constructor(auth, apiBase, AcceptHeader) {\n      this.__apiBase = apiBase || 'https://api.github.com';\n      this.__auth = {\n         token: auth.token,\n         username: auth.username,\n         password: auth.password,\n      };\n      this.__AcceptHeader = AcceptHeader || 'v3';\n\n      if (auth.token) {\n         this.__authorizationHeader = 'token ' + auth.token;\n      } else if (auth.username && auth.password) {\n         this.__authorizationHeader = 'Basic ' + Base64.encode(auth.username + ':' + auth.password);\n      }\n   }\n\n   /**\n    * Compute the URL to use to make a request.\n    * @private\n    * @param {string} path - either a URL relative to the API base or an absolute URL\n    * @return {string} - the URL to use\n    */\n   __getURL(path) {\n      let url = path;\n\n      if (path.indexOf('//') === -1) {\n         url = this.__apiBase + path;\n      }\n\n      let newCacheBuster = 'timestamp=' + new Date().getTime();\n      return url.replace(/(timestamp=\\d+)/, newCacheBuster);\n   }\n\n   /**\n    * Compute the headers required for an API request.\n    * @private\n    * @param {boolean} raw - if the request should be treated as JSON or as a raw request\n    * @param {string} AcceptHeader - the accept header for the request\n    * @return {Object} - the headers to use in the request\n    */\n   __getRequestHeaders(raw, AcceptHeader) {\n      let headers = {\n         'Content-Type': 'application/json;charset=UTF-8',\n         'Accept': 'application/vnd.github.' + (AcceptHeader || this.__AcceptHeader),\n      };\n\n      if (raw) {\n         headers.Accept += '.raw';\n      }\n      headers.Accept += '+json';\n\n      if (this.__authorizationHeader) {\n         headers.Authorization = this.__authorizationHeader;\n      }\n\n      return headers;\n   }\n\n   /**\n    * Sets the default options for API requests\n    * @protected\n    * @param {Object} [requestOptions={}] - the current options for the request\n    * @return {Object} - the options to pass to the request\n    */\n   _getOptionsWithDefaults(requestOptions = {}) {\n      if (!(requestOptions.visibility || requestOptions.affiliation)) {\n         requestOptions.type = requestOptions.type || 'all';\n      }\n      requestOptions.sort = requestOptions.sort || 'updated';\n      requestOptions.per_page = requestOptions.per_page || '100'; // eslint-disable-line\n\n      return requestOptions;\n   }\n\n   /**\n    * if a `Date` is passed to this function it will be converted to an ISO string\n    * @param {*} date - the object to attempt to coerce into an ISO date string\n    * @return {string} - the ISO representation of `date` or whatever was passed in if it was not a date\n    */\n   _dateToISO(date) {\n      if (date && (date instanceof Date)) {\n         date = date.toISOString();\n      }\n\n      return date;\n   }\n\n   /**\n    * A function that receives the result of the API request.\n    * @callback Requestable.callback\n    * @param {Requestable.Error} error - the error returned by the API or `null`\n    * @param {(Object|true)} result - the data returned by the API or `true` if the API returns `204 No Content`\n    * @param {Object} request - the raw {@linkcode https://github.com/mzabriskie/axios#response-schema Response}\n    */\n   /**\n    * Make a request.\n    * @param {string} method - the method for the request (GET, PUT, POST, DELETE)\n    * @param {string} path - the path for the request\n    * @param {*} [data] - the data to send to the server. For HTTP methods that don't have a body the data\n    *                   will be sent as query parameters\n    * @param {Requestable.callback} [cb] - the callback for the request\n    * @param {boolean} [raw=false] - if the request should be sent as raw. If this is a falsy value then the\n    *                              request will be made as JSON\n    * @return {Promise} - the Promise for the http request\n    */\n   _request(method, path, data, cb, raw) {\n      const url = this.__getURL(path);\n\n      const AcceptHeader = (data || {}).AcceptHeader;\n      if (AcceptHeader) {\n         delete data.AcceptHeader;\n      }\n      const headers = this.__getRequestHeaders(raw, AcceptHeader);\n\n      let queryParams = {};\n\n      const shouldUseDataAsParams = data && (typeof data === 'object') && methodHasNoBody(method);\n      if (shouldUseDataAsParams) {\n         queryParams = data;\n         data = undefined;\n      }\n\n      const config = {\n         url: url,\n         method: method,\n         headers: headers,\n         params: queryParams,\n         data: data,\n         responseType: raw ? 'text' : 'json',\n      };\n\n      log(`${config.method} to ${config.url}`);\n      const requestPromise = axios(config).catch(callbackErrorOrThrow(cb, path));\n\n      if (cb) {\n         requestPromise.then((response) => {\n            if (response.data && Object.keys(response.data).length > 0) {\n               // When data has results\n               cb(null, response.data, response);\n            } else if (config.method !== 'GET' && Object.keys(response.data).length < 1) {\n               // True when successful submit a request and receive a empty object\n               cb(null, (response.status < 300), response);\n            } else {\n               cb(null, response.data, response);\n            }\n         });\n      }\n\n      return requestPromise;\n   }\n\n   /**\n    * Make a request to an endpoint the returns 204 when true and 404 when false\n    * @param {string} path - the path to request\n    * @param {Object} data - any query parameters for the request\n    * @param {Requestable.callback} cb - the callback that will receive `true` or `false`\n    * @param {method} [method=GET] - HTTP Method to use\n    * @return {Promise} - the promise for the http request\n    */\n   _request204or404(path, data, cb, method = 'GET') {\n      return this._request(method, path, data)\n         .then(function success(response) {\n            if (cb) {\n               cb(null, true, response);\n            }\n            return true;\n         }, function failure(response) {\n            if (response.response.status === 404) {\n               if (cb) {\n                  cb(null, false, response);\n               }\n               return false;\n            }\n\n            if (cb) {\n               cb(response);\n            }\n            throw response;\n         });\n   }\n\n   /**\n    * Make a request and fetch all the available data. Github will paginate responses so for queries\n    * that might span multiple pages this method is preferred to {@link Requestable#request}\n    * @param {string} path - the path to request\n    * @param {Object} options - the query parameters to include\n    * @param {Requestable.callback} [cb] - the function to receive the data. The returned data will always be an array.\n    * @param {Object[]} results - the partial results. This argument is intended for internal use only.\n    * @return {Promise} - a promise which will resolve when all pages have been fetched\n    * @deprecated This will be folded into {@link Requestable#_request} in the 2.0 release.\n    */\n   _requestAllPages(path, options, cb, results) {\n      results = results || [];\n\n      return this._request('GET', path, options)\n         .then((response) => {\n            let thisGroup;\n            if (response.data instanceof Array) {\n               thisGroup = response.data;\n            } else if (response.data.items instanceof Array) {\n               thisGroup = response.data.items;\n            } else {\n               let message = `cannot figure out how to append ${response.data} to the result set`;\n               throw new ResponseError(message, path, response);\n            }\n            results.push(...thisGroup);\n\n            const nextUrl = getNextPage(response.headers.link);\n            if(nextUrl) {\n               if (!options) {\n                  options = {};\n               }\n               options.page = parseInt(\n                 nextUrl.match(/([&\\?]page=[0-9]*)/g)\n                   .shift()\n                   .split('=')\n                   .pop()\n               );\n               if (!(options && typeof options.page !== 'number')) {\n                  log(`getting next page: ${nextUrl}`);\n                  return this._requestAllPages(nextUrl, options, cb, results);\n               }\n            }\n\n            if (cb) {\n               cb(null, results, response);\n            }\n\n            response.data = results;\n            return response;\n         }).catch(callbackErrorOrThrow(cb, path));\n   }\n}\n\nmodule.exports = Requestable;\n\n// ////////////////////////// //\n//  Private helper functions  //\n// ////////////////////////// //\nconst METHODS_WITH_NO_BODY = ['GET', 'HEAD', 'DELETE'];\nfunction methodHasNoBody(method) {\n   return METHODS_WITH_NO_BODY.indexOf(method) !== -1;\n}\n\nfunction getNextPage(linksHeader = '') {\n   const links = linksHeader.split(/\\s*,\\s*/); // splits and strips the urls\n   return links.reduce(function(nextUrl, link) {\n      if (link.search(/rel=\"next\"/) !== -1) {\n         return (link.match(/<(.*)>/) || [])[1];\n      }\n\n      return nextUrl;\n   }, undefined);\n}\n\nfunction callbackErrorOrThrow(cb, path) {\n   return function handler(object) {\n      let error;\n      if (object.hasOwnProperty('config')) {\n         const {response: {status, statusText}, config: {method, url}} = object;\n         let message = (`${status} error making request ${method} ${url}: \"${statusText}\"`);\n         error = new ResponseError(message, path, object);\n         log(`${message} ${JSON.stringify(object.data)}`);\n      } else {\n         error = object;\n      }\n      if (cb) {\n         log('going to error callback');\n         cb(error);\n      } else {\n         log('throwing error');\n         throw error;\n      }\n   };\n}\n"]}
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