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metaapi.cloud-sdk

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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)

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'use strict'; 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; } import LoggerManager from '../../logger'; let SubscriptionManager = class SubscriptionManager { /** * Returns whether an account is currently subscribing * @param {String} accountId account id * @param {Number} instanceNumber instance index number * @returns {Boolean} whether an account is currently subscribing */ isAccountSubscribing(accountId, instanceNumber) { if (instanceNumber !== undefined) { return Object.keys(this._subscriptions).includes(accountId + ':' + instanceNumber); } else { for (let key of Object.keys(this._subscriptions)){ if (key.startsWith(accountId)) { return true; } } return false; } } /** * Returns whether an instance is in disconnected retry mode * @param {String} accountId account id * @param {Number} instanceNumber instance index number * @returns {Boolean} whether an account is currently subscribing */ isDisconnectedRetryMode(accountId, instanceNumber) { let instanceId = accountId + ':' + (instanceNumber || 0); return this._subscriptions[instanceId] ? this._subscriptions[instanceId].isDisconnectedRetryMode : false; } /** * Returns whether an account subscription is active * @param {String} accountId account id * @returns {Boolean} instance actual subscribe state */ isSubscriptionActive(accountId) { return !!this._subscriptionState[accountId]; } /** * Subscribes to the Metatrader terminal events * @param {String} accountId id of the MetaTrader account to subscribe to * @param {Number} instanceNumber instance index number * @returns {Promise} promise which resolves when subscription started */ subscribe(accountId, instanceNumber) { this._subscriptionState[accountId] = true; return this._websocketClient.rpcRequest(accountId, { type: 'subscribe', instanceIndex: instanceNumber }); } /** * Schedules to send subscribe requests to an account until cancelled * @param {String} accountId id of the MetaTrader account * @param {Number} instanceNumber instance index number * @param {Boolean} isDisconnectedRetryMode whether to start subscription in disconnected retry * mode. Subscription task in disconnected mode will be immediately replaced when the status packet is received */ scheduleSubscribe(accountId, instanceNumber, isDisconnectedRetryMode = false) { var _this = this; return _async_to_generator(function*() { const client = _this._websocketClient; let instanceId = accountId + ':' + (instanceNumber || 0); if (!_this._subscriptions[instanceId]) { _this._subscriptions[instanceId] = { shouldRetry: true, task: null, waitTask: null, future: null, isDisconnectedRetryMode }; let subscribeRetryIntervalInSeconds = 3; while(_this._subscriptions[instanceId].shouldRetry){ let resolveSubscribe; _this._subscriptions[instanceId].task = { promise: new Promise((res)=>{ resolveSubscribe = res; }) }; _this._subscriptions[instanceId].task.resolve = resolveSubscribe; // eslint-disable-next-line no-inner-declarations, complexity let subscribeTask = function() { var _ref = _async_to_generator(function*() { try { _this._logger.debug(`${accountId}:${instanceNumber}: running subscribe task`); yield _this.subscribe(accountId, instanceNumber); } catch (err) { if (err.name === 'TooManyRequestsError') { const socketInstanceIndex = client.socketInstancesByAccounts[instanceNumber][accountId]; if (err.metadata.type === 'LIMIT_ACCOUNT_SUBSCRIPTIONS_PER_USER') { _this._logSubscriptionError(accountId, `${instanceId}: Failed to subscribe`, err); } if ([ 'LIMIT_ACCOUNT_SUBSCRIPTIONS_PER_USER', 'LIMIT_ACCOUNT_SUBSCRIPTIONS_PER_SERVER', 'LIMIT_ACCOUNT_SUBSCRIPTIONS_PER_USER_PER_SERVER' ].includes(err.metadata.type)) { delete client.socketInstancesByAccounts[instanceNumber][accountId]; client.lockSocketInstance(instanceNumber, socketInstanceIndex, _this._websocketClient.getAccountRegion(accountId), err.metadata); } else { const retryTime = new Date(err.metadata.recommendedRetryTime).getTime(); if (Date.now() + subscribeRetryIntervalInSeconds * 1000 < retryTime) { yield new Promise((res)=>setTimeout(res, retryTime - Date.now() - subscribeRetryIntervalInSeconds * 1000)); } } } else { _this._logSubscriptionError(accountId, `${instanceId}: Failed to subscribe`, err); if (err.name === 'NotFoundError') { _this.refreshAccount(accountId); } if (err.name === 'TimeoutError') { const mainAccountId = _this._websocketClient.accountsByReplicaId[accountId]; if (mainAccountId) { const region = _this._websocketClient.getAccountRegion(accountId); const connectedInstances = _this._latencyService.getActiveAccountInstances(mainAccountId); // eslint-disable-next-line max-depth if (!connectedInstances.some((instance)=>instance.startsWith(`${mainAccountId}:${region}`))) { _this._timeoutErrorCounter[accountId] = _this._timeoutErrorCounter[accountId] || 0; _this._timeoutErrorCounter[accountId]++; // eslint-disable-next-line max-depth if (_this._timeoutErrorCounter[accountId] > 4) { _this._timeoutErrorCounter[accountId] = 0; _this.refreshAccount(accountId); } } } } } } resolveSubscribe(); }); return function subscribeTask() { return _ref.apply(this, arguments); }; }(); subscribeTask(); yield _this._subscriptions[instanceId].task.promise; if (!_this._subscriptions[instanceId].shouldRetry) { break; } const retryInterval = subscribeRetryIntervalInSeconds; subscribeRetryIntervalInSeconds = Math.min(subscribeRetryIntervalInSeconds * 2, 300); let resolve; let subscribePromise = new Promise((res)=>{ resolve = res; }); _this._subscriptions[instanceId].waitTask = setTimeout(()=>{ resolve(true); }, retryInterval * 1000); _this._subscriptions[instanceId].future = { resolve, promise: subscribePromise }; const result = yield _this._subscriptions[instanceId].future.promise; _this._subscriptions[instanceId].future = null; if (!result) { break; } } delete _this._subscriptions[instanceId]; } })(); } /** * Unsubscribe from account * @param {String} accountId id of the MetaTrader account to unsubscribe * @param {Number} instanceNumber instance index number * @returns {Promise} promise which resolves when socket unsubscribed */ unsubscribe(accountId, instanceNumber) { var _this = this; return _async_to_generator(function*() { _this.cancelAccount(accountId); delete _this._subscriptionState[accountId]; return _this._websocketClient.rpcRequest(accountId, { type: 'unsubscribe', instanceIndex: instanceNumber }); })(); } /** * Cancels active subscription tasks for an instance id * @param {String} instanceId instance id to cancel subscription task for */ cancelSubscribe(instanceId) { if (this._subscriptions[instanceId]) { const subscription = this._subscriptions[instanceId]; if (subscription.future) { subscription.future.resolve(false); clearTimeout(subscription.waitTask); } if (subscription.task) { subscription.task.resolve(false); } subscription.shouldRetry = false; } } /** * Cancels active subscription tasks for an account * @param {String} accountId account id to cancel subscription tasks for */ cancelAccount(accountId) { for (let instanceId of Object.keys(this._subscriptions).filter((key)=>key.startsWith(accountId))){ this.cancelSubscribe(instanceId); } Object.keys(this._awaitingResubscribe).forEach((instanceNumber)=>delete this._awaitingResubscribe[instanceNumber][accountId]); delete this._timeoutErrorCounter[accountId]; } /** * Invoked on account timeout. * @param {String} accountId id of the MetaTrader account * @param {Number} instanceNumber instance index number */ onTimeout(accountId, instanceNumber) { const region = this._websocketClient.getAccountRegion(accountId); if (this._websocketClient.socketInstancesByAccounts[instanceNumber][accountId] !== undefined && this._websocketClient.connected(instanceNumber, this._websocketClient.socketInstancesByAccounts[instanceNumber][accountId], region)) { this._logger.debug(`${accountId}:${instanceNumber}: scheduling subscribe because of account timeout`); this.scheduleSubscribe(accountId, instanceNumber, true); } } /** * Invoked when connection to MetaTrader terminal terminated * @param {String} accountId id of the MetaTrader account * @param {Number} instanceNumber instance index number */ onDisconnected(accountId, instanceNumber) { var _this = this; return _async_to_generator(function*() { yield new Promise((res)=>setTimeout(res, Math.max(Math.random() * 5, 1) * 1000)); if (_this._websocketClient.socketInstancesByAccounts[instanceNumber][accountId] !== undefined) { _this._logger.debug(`${accountId}:${instanceNumber}: scheduling subscribe because account disconnected`); _this.scheduleSubscribe(accountId, instanceNumber, true); } })(); } /** * Invoked when connection to MetaApi websocket API restored after a disconnect. * @param {Number} instanceNumber instance index number * @param {Number} socketInstanceIndex socket instance index * @param {String[]} reconnectAccountIds account ids to reconnect */ onReconnected(instanceNumber, socketInstanceIndex, reconnectAccountIds) { if (!this._awaitingResubscribe[instanceNumber]) { this._awaitingResubscribe[instanceNumber] = {}; } const socketInstancesByAccounts = this._websocketClient.socketInstancesByAccounts[instanceNumber]; for (let instanceId of Object.keys(this._subscriptions)){ const accountId = instanceId.split(':')[0]; if (socketInstancesByAccounts[accountId] === socketInstanceIndex) { this.cancelSubscribe(instanceId); } } var _this = this; reconnectAccountIds.forEach(function() { var _ref = _async_to_generator(function*(accountId) { if (!_this._awaitingResubscribe[instanceNumber][accountId]) { _this._awaitingResubscribe[instanceNumber][accountId] = true; while(_this.isAccountSubscribing(accountId, instanceNumber)){ yield new Promise((res)=>setTimeout(res, 1000)); } yield new Promise((res)=>setTimeout(res, Math.random() * 5000)); if (_this._awaitingResubscribe[instanceNumber][accountId]) { delete _this._awaitingResubscribe[instanceNumber][accountId]; _this._logger.debug(`${accountId}:${instanceNumber}: scheduling subscribe because account reconnected`); _this.scheduleSubscribe(accountId, instanceNumber); } } }); return function(accountId) { return _ref.apply(this, arguments); }; }()); } /** * Schedules a task to refresh the account data * @param {string} accountId account id */ refreshAccount(accountId) { const mainAccountId = this._websocketClient.accountsByReplicaId[accountId]; if (mainAccountId) { const registry = this._metaApi._connectionRegistry; const rpcConnection = registry.rpcConnections[mainAccountId]; const region = this._websocketClient.getAccountRegion(accountId); if (region) { if (rpcConnection) { rpcConnection.scheduleRefresh(region); } const streamingConnection = registry.streamingConnections[mainAccountId]; if (streamingConnection) { streamingConnection.scheduleRefresh(region); } } } } _logSubscriptionError(accountId, message, error) { const primaryAccountId = this._websocketClient.accountsByReplicaId[accountId]; const method = this._latencyService.getSynchronizedAccountInstances(primaryAccountId).length ? 'debug' : 'error'; this._logger[method](message, error); } /** * Constructs the subscription manager * @param {MetaApiWebsocketClient} websocketClient websocket client to use for sending requests * @param {MetaApi} metaApi metaApi instance */ constructor(websocketClient, metaApi){ _define_property(this, "_websocketClient", void 0); _define_property(this, "_latencyService", void 0); _define_property(this, "_metaApi", void 0); _define_property(this, "_subscriptions", void 0); _define_property(this, "_awaitingResubscribe", void 0); _define_property(this, "_subscriptionState", void 0); _define_property(this, "_logger", void 0); _define_property(this, "_timeoutErrorCounter", void 0); _define_property(this, "_recentlyDeletedAccounts", void 0); this._websocketClient = websocketClient; this._latencyService = websocketClient.latencyService; this._metaApi = metaApi; this._subscriptions = {}; this._awaitingResubscribe = {}; this._subscriptionState = {}; this._logger = LoggerManager.getLogger('SubscriptionManager'); this._timeoutErrorCounter = {}; this._recentlyDeletedAccounts = {}; } }; /** * Subscription manager to handle account subscription logic */ export { SubscriptionManager as default }; //# sourceMappingURL=data:application/json;base64,{"version":3,"sources":["<anon>"],"sourcesContent":["'use strict';\n\nimport LoggerManager from '../../logger';\nimport MetaApiWebsocketClient from './metaApiWebsocket.client';\n\n/**\n * Subscription manager to handle account subscription logic\n */\nexport default class SubscriptionManager {\n  \n  private _websocketClient: MetaApiWebsocketClient;\n  private _latencyService: any;\n  private _metaApi: any;\n  private _subscriptions: {};\n  private _awaitingResubscribe: {};\n  private _subscriptionState: {};\n  private _logger: any;\n  private _timeoutErrorCounter: {};\n  private _recentlyDeletedAccounts: {};\n\n  /**\n   * Constructs the subscription manager\n   * @param {MetaApiWebsocketClient} websocketClient websocket client to use for sending requests\n   * @param {MetaApi} metaApi metaApi instance\n   */\n  constructor(websocketClient, metaApi) {\n    this._websocketClient = websocketClient;\n    this._latencyService = websocketClient.latencyService;\n    this._metaApi = metaApi;\n    this._subscriptions = {};\n    this._awaitingResubscribe = {};\n    this._subscriptionState = {};\n    this._logger = LoggerManager.getLogger('SubscriptionManager');\n    this._timeoutErrorCounter = {};\n    this._recentlyDeletedAccounts = {};\n  }\n\n  /**\n   * Returns whether an account is currently subscribing\n   * @param {String} accountId account id\n   * @param {Number} instanceNumber instance index number\n   * @returns {Boolean} whether an account is currently subscribing\n   */\n  isAccountSubscribing(accountId, instanceNumber) {\n    if (instanceNumber !== undefined) {\n      return Object.keys(this._subscriptions).includes(accountId + ':' + instanceNumber);\n    } else {\n      for (let key of Object.keys(this._subscriptions)) {\n        if (key.startsWith(accountId)) {\n          return true;\n        }\n      }\n      return false;\n    }\n  }\n\n  /**\n   * Returns whether an instance is in disconnected retry mode\n   * @param {String} accountId account id\n   * @param {Number} instanceNumber instance index number\n   * @returns {Boolean} whether an account is currently subscribing\n   */\n  isDisconnectedRetryMode(accountId, instanceNumber) {\n    let instanceId = accountId + ':' + (instanceNumber || 0);\n    return this._subscriptions[instanceId] ? this._subscriptions[instanceId].isDisconnectedRetryMode : false;\n  }\n\n  /**\n   * Returns whether an account subscription is active\n   * @param {String} accountId account id\n   * @returns {Boolean} instance actual subscribe state\n   */\n  isSubscriptionActive(accountId) {\n    return !!this._subscriptionState[accountId];\n  }\n\n  /**\n   * Subscribes to the Metatrader terminal events\n   * @param {String} accountId id of the MetaTrader account to subscribe to\n   * @param {Number} instanceNumber instance index number\n   * @returns {Promise} promise which resolves when subscription started\n   */\n  subscribe(accountId, instanceNumber) {\n    this._subscriptionState[accountId] = true;\n    return this._websocketClient.rpcRequest(accountId, {type: 'subscribe', instanceIndex: instanceNumber});\n  }\n\n  /**\n   * Schedules to send subscribe requests to an account until cancelled\n   * @param {String} accountId id of the MetaTrader account\n   * @param {Number} instanceNumber instance index number\n   * @param {Boolean} isDisconnectedRetryMode whether to start subscription in disconnected retry\n   * mode. Subscription task in disconnected mode will be immediately replaced when the status packet is received\n   */\n  async scheduleSubscribe(accountId, instanceNumber, isDisconnectedRetryMode = false) {\n    const client = this._websocketClient;\n    let instanceId = accountId + ':' + (instanceNumber || 0);\n    if (!this._subscriptions[instanceId]) {\n      this._subscriptions[instanceId] = {\n        shouldRetry: true,\n        task: null,\n        waitTask: null,\n        future: null,\n        isDisconnectedRetryMode\n      };\n      let subscribeRetryIntervalInSeconds = 3;\n      while (this._subscriptions[instanceId].shouldRetry) {\n        let resolveSubscribe;\n        this._subscriptions[instanceId].task = {promise: new Promise((res) => {\n          resolveSubscribe = res;\n        })};\n        this._subscriptions[instanceId].task.resolve = resolveSubscribe;\n        // eslint-disable-next-line no-inner-declarations, complexity\n        let subscribeTask = async () => {\n          try {\n            this._logger.debug(`${accountId}:${instanceNumber}: running subscribe task`);\n            await this.subscribe(accountId, instanceNumber);\n          } catch (err) {\n            if (err.name === 'TooManyRequestsError') {\n              const socketInstanceIndex = client.socketInstancesByAccounts[instanceNumber][accountId];\n              if (err.metadata.type === 'LIMIT_ACCOUNT_SUBSCRIPTIONS_PER_USER') {\n                this._logSubscriptionError(accountId, `${instanceId}: Failed to subscribe`, err);\n              }\n              if (['LIMIT_ACCOUNT_SUBSCRIPTIONS_PER_USER', 'LIMIT_ACCOUNT_SUBSCRIPTIONS_PER_SERVER', \n                'LIMIT_ACCOUNT_SUBSCRIPTIONS_PER_USER_PER_SERVER'].includes(err.metadata.type)) {\n                delete client.socketInstancesByAccounts[instanceNumber][accountId];\n                client.lockSocketInstance(instanceNumber, socketInstanceIndex, \n                  this._websocketClient.getAccountRegion(accountId), err.metadata);\n              } else {\n                const retryTime = new Date(err.metadata.recommendedRetryTime).getTime();\n                if (Date.now() + subscribeRetryIntervalInSeconds * 1000 < retryTime) {\n                  await new Promise(res => setTimeout(res, retryTime - Date.now() -\n                    subscribeRetryIntervalInSeconds * 1000));\n                }\n              }\n            } else {\n              this._logSubscriptionError(accountId, `${instanceId}: Failed to subscribe`, err);\n              if (err.name === 'NotFoundError') {\n                this.refreshAccount(accountId);\n              }\n              if (err.name === 'TimeoutError') {\n                const mainAccountId = this._websocketClient.accountsByReplicaId[accountId];\n                if (mainAccountId) {\n                  const region = this._websocketClient.getAccountRegion(accountId);\n                  const connectedInstances = this._latencyService.getActiveAccountInstances(mainAccountId);\n                  // eslint-disable-next-line max-depth\n                  if (!connectedInstances.some(instance => instance.startsWith(`${mainAccountId}:${region}`))) {\n                    this._timeoutErrorCounter[accountId] = this._timeoutErrorCounter[accountId] || 0;\n                    this._timeoutErrorCounter[accountId]++;\n                    // eslint-disable-next-line max-depth\n                    if (this._timeoutErrorCounter[accountId] > 4) {\n                      this._timeoutErrorCounter[accountId] = 0;\n                      this.refreshAccount(accountId);\n                    }\n                  }\n                }\n              }\n            }\n          }\n          resolveSubscribe();\n        };\n        subscribeTask();\n        await this._subscriptions[instanceId].task.promise;\n        if (!this._subscriptions[instanceId].shouldRetry) {\n          break;\n        }\n        const retryInterval = subscribeRetryIntervalInSeconds;\n        subscribeRetryIntervalInSeconds = Math.min(subscribeRetryIntervalInSeconds * 2, 300);\n        let resolve;\n        let subscribePromise = new Promise((res) => {\n          resolve = res;\n        });\n        this._subscriptions[instanceId].waitTask = setTimeout(() => {\n          resolve(true);\n        }, retryInterval * 1000);\n        this._subscriptions[instanceId].future = {resolve, promise: subscribePromise};\n        const result = await this._subscriptions[instanceId].future.promise;\n        this._subscriptions[instanceId].future = null;\n        if (!result) {\n          break;\n        }\n      }\n      delete this._subscriptions[instanceId];\n    }\n  }\n\n  /**\n   * Unsubscribe from account\n   * @param {String} accountId id of the MetaTrader account to unsubscribe\n   * @param {Number} instanceNumber instance index number\n   * @returns {Promise} promise which resolves when socket unsubscribed\n   */\n  async unsubscribe(accountId, instanceNumber) {\n    this.cancelAccount(accountId);\n    delete this._subscriptionState[accountId];\n    return this._websocketClient.rpcRequest(accountId, {type: 'unsubscribe', instanceIndex: instanceNumber});\n  }\n\n  /**\n   * Cancels active subscription tasks for an instance id\n   * @param {String} instanceId instance id to cancel subscription task for\n   */\n  cancelSubscribe(instanceId) {\n    if (this._subscriptions[instanceId]) {\n      const subscription = this._subscriptions[instanceId];\n      if (subscription.future) {\n        subscription.future.resolve(false);\n        clearTimeout(subscription.waitTask);\n      }\n      if (subscription.task) {\n        subscription.task.resolve(false);\n      }\n      subscription.shouldRetry = false;\n    }\n  }\n\n  /**\n   * Cancels active subscription tasks for an account\n   * @param {String} accountId account id to cancel subscription tasks for\n   */\n  cancelAccount(accountId) {\n    for (let instanceId of Object.keys(this._subscriptions).filter(key => key.startsWith(accountId))) {\n      this.cancelSubscribe(instanceId);\n    }\n    Object.keys(this._awaitingResubscribe).forEach(instanceNumber => \n      delete this._awaitingResubscribe[instanceNumber][accountId]);\n    delete this._timeoutErrorCounter[accountId];\n  }\n\n  /**\n   * Invoked on account timeout.\n   * @param {String} accountId id of the MetaTrader account\n   * @param {Number} instanceNumber instance index number\n   */\n  onTimeout(accountId, instanceNumber) {\n    const region = this._websocketClient.getAccountRegion(accountId);\n    if (\n      this._websocketClient.socketInstancesByAccounts[instanceNumber][accountId] !== undefined && \n      this._websocketClient.connected(\n        instanceNumber, this._websocketClient.socketInstancesByAccounts[instanceNumber][accountId], region\n      )\n    ) {\n      this._logger.debug(`${accountId}:${instanceNumber}: scheduling subscribe because of account timeout`);\n      this.scheduleSubscribe(accountId, instanceNumber, true);\n    }\n  }\n\n  /**\n   * Invoked when connection to MetaTrader terminal terminated\n   * @param {String} accountId id of the MetaTrader account\n   * @param {Number} instanceNumber instance index number\n   */\n  async onDisconnected(accountId, instanceNumber) {\n    await new Promise(res => setTimeout(res, Math.max(Math.random() * 5, 1) * 1000));\n    if (this._websocketClient.socketInstancesByAccounts[instanceNumber][accountId] !== undefined) {\n      this._logger.debug(`${accountId}:${instanceNumber}: scheduling subscribe because account disconnected`);\n      this.scheduleSubscribe(accountId, instanceNumber, true);\n    }\n  }\n\n  /**\n   * Invoked when connection to MetaApi websocket API restored after a disconnect.\n   * @param {Number} instanceNumber instance index number\n   * @param {Number} socketInstanceIndex socket instance index\n   * @param {String[]} reconnectAccountIds account ids to reconnect\n   */\n  onReconnected(instanceNumber, socketInstanceIndex, reconnectAccountIds) {\n    if (!this._awaitingResubscribe[instanceNumber]) {\n      this._awaitingResubscribe[instanceNumber] = {};\n    }\n    const socketInstancesByAccounts = this._websocketClient.socketInstancesByAccounts[instanceNumber];\n    for(let instanceId of Object.keys(this._subscriptions)){\n      const accountId = instanceId.split(':')[0];\n      if (socketInstancesByAccounts[accountId] === socketInstanceIndex) {\n        this.cancelSubscribe(instanceId);\n      }\n    }\n    reconnectAccountIds.forEach(async accountId => {\n      if (!this._awaitingResubscribe[instanceNumber][accountId]) {\n        this._awaitingResubscribe[instanceNumber][accountId] = true;\n        while (this.isAccountSubscribing(accountId, instanceNumber)) {\n          await new Promise(res => setTimeout(res, 1000));\n        }\n        await new Promise(res => setTimeout(res, Math.random() * 5000));\n        if (this._awaitingResubscribe[instanceNumber][accountId]) {\n          delete this._awaitingResubscribe[instanceNumber][accountId];\n          this._logger.debug(`${accountId}:${instanceNumber}: scheduling subscribe because account reconnected`);\n          this.scheduleSubscribe(accountId, instanceNumber);\n        }\n      }\n    });\n  }\n\n  /**\n   * Schedules a task to refresh the account data\n   * @param {string} accountId account id\n   */\n  refreshAccount(accountId) {\n    const mainAccountId = this._websocketClient.accountsByReplicaId[accountId];\n    if (mainAccountId) {\n      const registry = this._metaApi._connectionRegistry;\n      const rpcConnection = registry.rpcConnections[mainAccountId];\n      const region = this._websocketClient.getAccountRegion(accountId);\n      if (region) {\n        if (rpcConnection) {\n          rpcConnection.scheduleRefresh(region);\n        }\n        const streamingConnection = registry.streamingConnections[mainAccountId];\n        if (streamingConnection) {\n          streamingConnection.scheduleRefresh(region);\n        }\n      }\n    }\n  }\n\n  _logSubscriptionError(accountId, message, error) {\n    const primaryAccountId = this._websocketClient.accountsByReplicaId[accountId];\n    const method = this._latencyService.getSynchronizedAccountInstances(primaryAccountId).length ? 'debug' : 'error';\n    this._logger[method](message, error);\n  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