metaapi.cloud-sdk
Version:
SDK for MetaApi, a professional cloud forex API which includes MetaTrader REST API and MetaTrader websocket API. Supports both MetaTrader 5 (MT5) and MetaTrader 4 (MT4). CopyFactory copy trading API included. (https://metaapi.cloud)
231 lines (230 loc) • 28.2 kB
JavaScript
;
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
try {
var info = gen[key](arg);
var value = info.value;
} catch (error) {
reject(error);
return;
}
if (info.done) {
resolve(value);
} else {
Promise.resolve(value).then(_next, _throw);
}
}
function _async_to_generator(fn) {
return function() {
var self = this, args = arguments;
return new Promise(function(resolve, reject) {
var gen = fn.apply(self, args);
function _next(value) {
asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
}
function _throw(err) {
asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
}
_next(undefined);
});
};
}
function _define_property(obj, key, value) {
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
function _object_spread(target) {
for(var i = 1; i < arguments.length; i++){
var source = arguments[i] != null ? arguments[i] : {};
var ownKeys = Object.keys(source);
if (typeof Object.getOwnPropertySymbols === "function") {
ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function(sym) {
return Object.getOwnPropertyDescriptor(source, sym).enumerable;
}));
}
ownKeys.forEach(function(key) {
_define_property(target, key, source[key]);
});
}
return target;
}
const axios = require('axios');
import { UnauthorizedError, ForbiddenError, ApiError, ValidationError, InternalError, NotFoundError, TooManyRequestsError, ConflictError } from './errorHandler';
import OptionsValidator from './optionsValidator';
import TimeoutError from './timeoutError';
import LoggerManager from '../logger';
import _ from 'lodash';
let HttpClient = class HttpClient {
/**
* Performs a request. Response errors are returned as ApiError or subclasses.
* @param {Object} options request options
* @returns {Object|String|any} request result
*/ request(options, type = '', retryCounter = 0, endTime = Date.now() + this._maxRetryDelay * this._retries, isLongRunning = false) {
var _this = this;
return _async_to_generator(function*() {
options.timeout = _this._timeout;
let retryAfterSeconds = 0;
options.callback = (e, res)=>{
_this._logger.debug(`${type}: received request response with status ${res === null || res === void 0 ? void 0 : res.status}`);
if ((res === null || res === void 0 ? void 0 : res.status) === 202) {
var _res_data_metadata, _res_data;
var _res_headers_retryafter;
retryAfterSeconds = (_res_headers_retryafter = res.headers['retry-after']) !== null && _res_headers_retryafter !== void 0 ? _res_headers_retryafter : (_res_data = res.data) === null || _res_data === void 0 ? void 0 : (_res_data_metadata = _res_data.metadata) === null || _res_data_metadata === void 0 ? void 0 : _res_data_metadata.recommendedRetryTime;
_this._logger.debug(`${type}: retry after value is ${retryAfterSeconds}`);
if (isNaN(retryAfterSeconds)) {
retryAfterSeconds = Math.max((new Date(retryAfterSeconds).getTime() - Date.now()) / 1000, 1);
}
if (!isLongRunning) {
endTime = Date.now() + _this._longRunningRequestTimeout;
isLongRunning = true;
}
}
};
let body;
try {
const response = yield _this._makeRequest(options, type);
options.callback(null, response);
body = response && response.data || undefined;
} catch (err) {
retryCounter = yield _this._handleError(err, type, retryCounter, endTime);
return _this.request(options, type, retryCounter, endTime);
}
if (retryAfterSeconds) {
if (body && body.message) {
_this._logger.info(`Retrying request in ${Math.floor(retryAfterSeconds)} seconds because request ` + 'returned message:', body.message);
}
yield _this._handleRetry(endTime, retryAfterSeconds * 1000);
body = yield _this.request(options, type, retryCounter, endTime, isLongRunning);
}
return body;
})();
}
_makeRequest(options, type) {
var _optionsToLog_headers;
let optionsToLog = _.cloneDeep(options);
if ((_optionsToLog_headers = optionsToLog.headers) === null || _optionsToLog_headers === void 0 ? void 0 : _optionsToLog_headers['auth-token']) {
optionsToLog.headers['auth-token'] = '...';
}
this._logger.debug(`${type}: sending a request with options`, JSON.stringify(optionsToLog));
return axios(_object_spread({
transitional: {
clarifyTimeoutError: true
}
}, options));
}
_wait(pause) {
return _async_to_generator(function*() {
yield new Promise((res)=>setTimeout(res, pause));
})();
}
_handleRetry(endTime, retryAfter) {
var _this = this;
return _async_to_generator(function*() {
if (endTime > Date.now() + retryAfter) {
yield _this._wait(retryAfter);
} else {
throw new TimeoutError('Timed out waiting for the response');
}
})();
}
_handleError(err, type, retryCounter, endTime) {
var _this = this;
return _async_to_generator(function*() {
const error = _this._convertError(err);
if ([
'ConflictError',
'InternalError',
'ApiError',
'TimeoutError'
].includes(error.name) && retryCounter < _this._retries) {
const pause = Math.min(Math.pow(2, retryCounter) * _this._minRetryDelay, _this._maxRetryDelay);
yield _this._wait(pause);
return retryCounter + 1;
} else if (error.name === 'TooManyRequestsError') {
const retryTime = new Date(error.metadata.recommendedRetryTime).getTime();
if (retryTime < endTime) {
_this._logger.debug(`${type} request has failed with TooManyRequestsError (HTTP status code 429). ` + `Will retry request in ${Math.ceil((retryTime - Date.now()) / 1000)} seconds`);
yield _this._wait(retryTime - Date.now());
return retryCounter;
}
}
throw error;
})();
}
// eslint-disable-next-line complexity
_convertError(err) {
var _err_config;
const errorResponse = err.response || {};
const errorData = errorResponse.data || {};
const status = errorResponse.status || err.status;
const url = err === null || err === void 0 ? void 0 : (_err_config = err.config) === null || _err_config === void 0 ? void 0 : _err_config.url;
const errMsg = errorData.message || err.message;
const errMsgDefault = errorData.message || err.code || err.message;
switch(status){
case 400:
return new ValidationError(errMsg, errorData.details || err.details, url);
case 401:
return new UnauthorizedError(errMsg, url);
case 403:
return new ForbiddenError(errMsg, url);
case 404:
return new NotFoundError(errMsg, url);
case 409:
return new ConflictError(errMsg, url);
case 429:
return new TooManyRequestsError(errMsg, errorData.metadata || err.metadata, url);
case 500:
return new InternalError(errMsg, url);
default:
return new ApiError(ApiError, errMsgDefault, status, url);
}
}
/**
* Constructs HttpClient class instance
* @param {Number} timeout request timeout in seconds
* @param {RetryOptions} [retryOpts] retry options
*/ constructor(timeout = 60, retryOpts = {}){
_define_property(this, "_timeout", void 0);
_define_property(this, "_retries", void 0);
_define_property(this, "_minRetryDelay", void 0);
_define_property(this, "_maxRetryDelay", void 0);
_define_property(this, "_longRunningRequestTimeout", void 0);
_define_property(this, "_logger", void 0);
const validator = new OptionsValidator();
this._timeout = timeout * 1000;
this._retries = validator.validateNumber(retryOpts.retries, 5, 'retryOpts.retries');
this._minRetryDelay = validator.validateNonZero(retryOpts.minDelayInSeconds, 1, 'retryOpts.minDelayInSeconds') * 1000;
this._maxRetryDelay = validator.validateNonZero(retryOpts.maxDelayInSeconds, 30, 'retryOpts.maxDelayInSeconds') * 1000;
this._longRunningRequestTimeout = validator.validateNumber(retryOpts.longRunningRequestTimeoutInMinutes, 10, 'retryOpts.longRunningRequestTimeoutInMinutes') * 60 * 1000;
this._logger = LoggerManager.getLogger('HttpClient');
}
};
/**
* HTTP client library based on axios
*/ export { HttpClient as default };
/**
* HTTP client service mock for tests
*/ export class HttpClientMock extends HttpClient {
_makeRequest(...args) {
return this._requestFn(...args);
}
/**
* Constructs HTTP client mock
* @param {Function(options:Object):Promise} requestFn mocked request function
* @param {Number} timeout request timeout in seconds
* @param {RetryOptions} retryOpts retry options
*/ constructor(requestFn, timeout, retryOpts){
super(timeout, retryOpts);
_define_property(this, "_requestFn", void 0);
this._requestFn = requestFn;
}
}
//# sourceMappingURL=data:application/json;base64,{"version":3,"sources":["<anon>"],"sourcesContent":["'use strict';\n\nconst axios = require('axios');\n\nimport {\n  UnauthorizedError, ForbiddenError, ApiError, ValidationError, InternalError, \n  NotFoundError, TooManyRequestsError, ConflictError\n} from './errorHandler';\nimport OptionsValidator from './optionsValidator';\nimport TimeoutError from './timeoutError';\nimport LoggerManager, {Logger} from '../logger';\nimport _ from 'lodash';\n\n/**\n * HTTP client library based on axios\n */\nexport default class HttpClient {\n  \n  private _timeout: number;\n  private _retries: any;\n  private _minRetryDelay: number;\n  private _maxRetryDelay: number;\n  private _longRunningRequestTimeout: number;\n  private _logger: Logger;\n  \n  /**\n   * Constructs HttpClient class instance\n   * @param {Number} timeout request timeout in seconds\n   * @param {RetryOptions} [retryOpts] retry options\n   */\n  constructor(timeout = 60, retryOpts: RetryOptions = {}) {\n    const validator = new OptionsValidator();\n\n    this._timeout = timeout * 1000;\n    this._retries = validator.validateNumber(retryOpts.retries, 5, 'retryOpts.retries');\n    this._minRetryDelay = validator.validateNonZero(retryOpts.minDelayInSeconds, 1,\n      'retryOpts.minDelayInSeconds') * 1000;\n    this._maxRetryDelay = validator.validateNonZero(retryOpts.maxDelayInSeconds, 30,\n      'retryOpts.maxDelayInSeconds') * 1000;\n    this._longRunningRequestTimeout = validator.validateNumber(retryOpts.longRunningRequestTimeoutInMinutes, 10,\n      'retryOpts.longRunningRequestTimeoutInMinutes') * 60 * 1000;\n    this._logger = LoggerManager.getLogger('HttpClient');\n  }\n\n  /**\n   * Performs a request. Response errors are returned as ApiError or subclasses.\n   * @param {Object} options request options\n   * @returns {Object|String|any} request result\n   */\n  async request<T = any>(\n    options, type = '', retryCounter = 0, endTime = Date.now() + this._maxRetryDelay * this._retries,\n    isLongRunning = false\n  ): Promise<T> {\n    options.timeout = this._timeout;\n    \n    let retryAfterSeconds = 0;\n    options.callback = (e, res) => {\n      this._logger.debug(`${type}: received request response with status ${res?.status}`);\n      if (res?.status === 202) {\n        retryAfterSeconds = res.headers['retry-after'] ?? res.data?.metadata?.recommendedRetryTime;\n        this._logger.debug(`${type}: retry after value is ${retryAfterSeconds}`);\n\n        if (isNaN(retryAfterSeconds)) {\n          retryAfterSeconds = Math.max((new Date(retryAfterSeconds).getTime() - Date.now()) / 1000, 1);\n        }\n        if (!isLongRunning) {\n          endTime = Date.now() + this._longRunningRequestTimeout;\n          isLongRunning = true;\n        }\n      }\n    };\n\n    let body;\n\n    try {\n      const response = await this._makeRequest(options, type);\n      options.callback(null, response);\n      body = (response && response.data) || undefined;\n    } catch (err) {\n      retryCounter = await this._handleError(err, type, retryCounter, endTime);\n      return this.request(options, type, retryCounter, endTime);\n    }\n\n    if (retryAfterSeconds) {\n      if (body && body.message) {\n        this._logger.info(`Retrying request in ${Math.floor(retryAfterSeconds)} seconds because request ` +\n          'returned message:', body.message);\n      }\n      await this._handleRetry(endTime, retryAfterSeconds * 1000);\n      body = await this.request(options, type, retryCounter, endTime, isLongRunning);\n    }\n\n    return body;\n  }\n\n  _makeRequest(options, type) {\n    let optionsToLog = _.cloneDeep(options);\n    if (optionsToLog.headers?.['auth-token']) {\n      optionsToLog.headers['auth-token'] = '...';\n    }\n    this._logger.debug(`${type}: sending a request with options`, JSON.stringify(optionsToLog));\n    return axios({\n      transitional: {\n        clarifyTimeoutError: true\n      },\n      ...options\n    });\n  }\n  \n  async _wait(pause) {\n    await new Promise(res => setTimeout(res, pause));\n  }\n  \n  async _handleRetry(endTime, retryAfter) {\n    if (endTime > Date.now() + retryAfter) {\n      await this._wait(retryAfter);\n    } else {\n      throw new TimeoutError('Timed out waiting for the response');\n    }\n  }\n  \n  async _handleError(err, type, retryCounter, endTime) {\n    const error = this._convertError(err);\n\n    if (\n      ['ConflictError', 'InternalError', 'ApiError', 'TimeoutError'].includes(error.name) && \n      retryCounter < this._retries\n    ) {\n      const pause = Math.min(Math.pow(2, retryCounter) * this._minRetryDelay, this._maxRetryDelay);\n      await this._wait(pause);\n\n      return retryCounter + 1;\n    } else if (error.name === 'TooManyRequestsError') {\n      const retryTime = new Date((error as TooManyRequestsError).metadata.recommendedRetryTime).getTime();\n      if (retryTime < endTime) {\n        this._logger.debug(`${type} request has failed with TooManyRequestsError (HTTP status code 429). ` +\n          `Will retry request in ${Math.ceil((retryTime - Date.now()) / 1000)} seconds`);\n        await this._wait(retryTime - Date.now());\n\n        return retryCounter;\n      }\n    }\n\n    throw error;\n  }\n\n  // eslint-disable-next-line complexity\n  _convertError(err) {\n    const errorResponse = err.response || {};\n    const errorData = errorResponse.data || {};\n    const status = errorResponse.status || err.status;\n    const url = err?.config?.url;\n\n    const errMsg = errorData.message || err.message;\n    const errMsgDefault = errorData.message || err.code || err.message;\n\n    switch (status) {\n    case 400:\n      return new ValidationError(errMsg, errorData.details || err.details, url);\n    case 401:\n      return new UnauthorizedError(errMsg, url);\n    case 403:\n      return new ForbiddenError(errMsg, url);\n    case 404:\n      return new NotFoundError(errMsg, url);\n    case 409:\n      return new ConflictError(errMsg, url);\n    case 429:\n      return new TooManyRequestsError(errMsg, errorData.metadata || err.metadata, url);\n    case 500:\n      return new InternalError(errMsg, url);\n    default:\n      return new ApiError(ApiError, errMsgDefault, status, url);\n    }\n  }\n}\n\n/**\n * HTTP client service mock for tests\n */\nexport class HttpClientMock extends HttpClient {\n  _requestFn: any;\n  /**\n   * Constructs HTTP client mock\n   * @param {Function(options:Object):Promise} requestFn mocked request function\n   * @param {Number} timeout request timeout in seconds\n   * @param {RetryOptions} retryOpts retry options\n   */\n  constructor(requestFn, timeout, 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