VERSION 1.12 @ 2018-02-14 07:05:47.033501
Cannot read property 'contains' of null #2442 Terminal: custom sorting for account manager tables #2344 Datafeed not closed after removing chart #2270 order.setPrice() has stopped working #2267 Volume in DOM rounded to 0 #2255 Error on bars request and update order lines #2237 Console error: Uncaught (in promise) formatter not received #2228 DOME doesn't work in new version #2211 Add featureset to hide toolbars by default #2209 Add possibility to move studies through z-order #2187 Unexpected resolution values in getBars #2179 Session breaks line is stuck to the left on reload #2153 Typescript declaration has mistakes #2144 Terminal: cannot specify step less than 1 #2141 Namespace the types in charting_library.d.ts #2137 Widget logo showing momentarily on paid account #2132 Add API to apply overrides for created studies #2098 Baseline chart style #2097 How to hide legend "Data Provided by ICE Data services" #2046 Stoch RSI Calculation #2038 Customize loading screen #2012 Supertrend indicator #1950 Translations in market details widget #1946 "Track time" chart setting #1918 Add tabs for positions #1906 Trading Terminal: Notifications Log #1896 Previous Close Price Line #1843 Set Overlay/Compare styles using createStudy/overrides and applyStudiesOverrides #1812 Session under Symbol info is displaying wrong trading interval(s)? #1787 Add "Go to" specific date #1753 Add session breaks #1752 Allow users to specify a volume for the Long/Short Position drawing tools #1691 Add API to use own charts save/load adapter #1679 Drawing toolbar not available in mobile #1673 Typescript definitions #1591 Support for symbols containing lowercase letters #1581 createMultipointShape long_position stop&profit setting #1459 Cannot change awesome oscillator width #1213 New adaptive drawings panel #1145 Edit shapes, studies and series #1101 Hide an indicator with API #1025 VWAP INDICATOR #106
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243
datafeeds/udf/lib/udf-compatible-datafeed-base.js
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datafeeds/udf/lib/udf-compatible-datafeed-base.js
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import { getErrorMessage, logMessage, } from './helpers';
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import { HistoryProvider, } from './history-provider';
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import { DataPulseProvider } from './data-pulse-provider';
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import { QuotesPulseProvider } from './quotes-pulse-provider';
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import { SymbolsStorage } from './symbols-storage';
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function extractField(data, field, arrayIndex) {
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var value = data[field];
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return Array.isArray(value) ? value[arrayIndex] : value;
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}
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/**
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* This class implements interaction with UDF-compatible datafeed.
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* See UDF protocol reference at https://github.com/tradingview/charting_library/wiki/UDF
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*/
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var UDFCompatibleDatafeedBase = /** @class */ (function () {
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function UDFCompatibleDatafeedBase(datafeedURL, quotesProvider, requester, updateFrequency) {
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if (updateFrequency === void 0) { updateFrequency = 10 * 1000; }
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var _this = this;
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this._configuration = defaultConfiguration();
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this._symbolsStorage = null;
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this._datafeedURL = datafeedURL;
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this._requester = requester;
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this._historyProvider = new HistoryProvider(datafeedURL, this._requester);
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this._quotesProvider = quotesProvider;
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this._dataPulseProvider = new DataPulseProvider(this._historyProvider, updateFrequency);
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this._quotesPulseProvider = new QuotesPulseProvider(this._quotesProvider);
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this._configurationReadyPromise = this._requestConfiguration()
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.then(function (configuration) {
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if (configuration === null) {
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configuration = defaultConfiguration();
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}
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_this._setupWithConfiguration(configuration);
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});
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}
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UDFCompatibleDatafeedBase.prototype.onReady = function (callback) {
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var _this = this;
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this._configurationReadyPromise.then(function () {
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callback(_this._configuration);
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});
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};
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UDFCompatibleDatafeedBase.prototype.getQuotes = function (symbols, onDataCallback, onErrorCallback) {
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this._quotesProvider.getQuotes(symbols).then(onDataCallback).catch(onErrorCallback);
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};
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UDFCompatibleDatafeedBase.prototype.subscribeQuotes = function (symbols, fastSymbols, onRealtimeCallback, listenerGuid) {
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this._quotesPulseProvider.subscribeQuotes(symbols, fastSymbols, onRealtimeCallback, listenerGuid);
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};
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UDFCompatibleDatafeedBase.prototype.unsubscribeQuotes = function (listenerGuid) {
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this._quotesPulseProvider.unsubscribeQuotes(listenerGuid);
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};
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UDFCompatibleDatafeedBase.prototype.calculateHistoryDepth = function (resolution, resolutionBack, intervalBack) {
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return undefined;
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};
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UDFCompatibleDatafeedBase.prototype.getMarks = function (symbolInfo, startDate, endDate, onDataCallback, resolution) {
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if (!this._configuration.supports_marks) {
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return;
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}
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var requestParams = {
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symbol: symbolInfo.ticker || '',
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from: startDate,
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to: endDate,
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resolution: resolution,
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};
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this._send('marks', requestParams)
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.then(function (response) {
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if (!Array.isArray(response)) {
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var result = [];
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for (var i = 0; i < response.id.length; ++i) {
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result.push({
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id: extractField(response, 'id', i),
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time: extractField(response, 'time', i),
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color: extractField(response, 'color', i),
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text: extractField(response, 'text', i),
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label: extractField(response, 'label', i),
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labelFontColor: extractField(response, 'labelFontColor', i),
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minSize: extractField(response, 'minSize', i),
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});
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}
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response = result;
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}
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onDataCallback(response);
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})
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.catch(function (error) {
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logMessage("UdfCompatibleDatafeed: Request marks failed: " + getErrorMessage(error));
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onDataCallback([]);
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});
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};
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UDFCompatibleDatafeedBase.prototype.getTimescaleMarks = function (symbolInfo, startDate, endDate, onDataCallback, resolution) {
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if (!this._configuration.supports_timescale_marks) {
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return;
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}
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var requestParams = {
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symbol: symbolInfo.ticker || '',
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from: startDate,
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to: endDate,
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resolution: resolution,
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};
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this._send('timescale_marks', requestParams)
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.then(function (response) {
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if (!Array.isArray(response)) {
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var result = [];
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for (var i = 0; i < response.id.length; ++i) {
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result.push({
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id: extractField(response, 'id', i),
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time: extractField(response, 'time', i),
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color: extractField(response, 'color', i),
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label: extractField(response, 'label', i),
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tooltip: extractField(response, 'tooltip', i),
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});
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}
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response = result;
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}
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onDataCallback(response);
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})
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.catch(function (error) {
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logMessage("UdfCompatibleDatafeed: Request timescale marks failed: " + getErrorMessage(error));
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onDataCallback([]);
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});
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};
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UDFCompatibleDatafeedBase.prototype.getServerTime = function (callback) {
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if (!this._configuration.supports_time) {
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return;
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}
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this._send('time')
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.then(function (response) {
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var time = parseInt(response);
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if (!isNaN(time)) {
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callback(time);
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}
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})
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.catch(function (error) {
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logMessage("UdfCompatibleDatafeed: Fail to load server time, error=" + getErrorMessage(error));
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});
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};
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UDFCompatibleDatafeedBase.prototype.searchSymbols = function (userInput, exchange, symbolType, onResult) {
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if (this._configuration.supports_search) {
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var params = {
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limit: 30 /* SearchItemsLimit */,
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query: userInput.toUpperCase(),
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type: symbolType,
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exchange: exchange,
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};
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this._send('search', params)
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.then(function (response) {
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if (response.s !== undefined) {
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logMessage("UdfCompatibleDatafeed: search symbols error=" + response.errmsg);
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onResult([]);
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return;
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}
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onResult(response);
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})
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.catch(function (reason) {
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logMessage("UdfCompatibleDatafeed: Search symbols for '" + userInput + "' failed. Error=" + getErrorMessage(reason));
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onResult([]);
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});
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}
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else {
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if (this._symbolsStorage === null) {
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throw new Error('UdfCompatibleDatafeed: inconsistent configuration (symbols storage)');
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}
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this._symbolsStorage.searchSymbols(userInput, exchange, symbolType, 30 /* SearchItemsLimit */)
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.then(onResult)
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.catch(onResult.bind(null, []));
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}
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};
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UDFCompatibleDatafeedBase.prototype.resolveSymbol = function (symbolName, onResolve, onError) {
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logMessage('Resolve requested');
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var resolveRequestStartTime = Date.now();
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function onResultReady(symbolInfo) {
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logMessage("Symbol resolved: " + (Date.now() - resolveRequestStartTime) + "ms");
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onResolve(symbolInfo);
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}
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if (!this._configuration.supports_group_request) {
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var params = {
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symbol: symbolName,
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};
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this._send('symbols', params)
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.then(function (response) {
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if (response.s !== undefined) {
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onError('unknown_symbol');
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}
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else {
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onResultReady(response);
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}
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})
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.catch(function (reason) {
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logMessage("UdfCompatibleDatafeed: Error resolving symbol: " + getErrorMessage(reason));
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onError('unknown_symbol');
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});
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}
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else {
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if (this._symbolsStorage === null) {
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throw new Error('UdfCompatibleDatafeed: inconsistent configuration (symbols storage)');
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}
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this._symbolsStorage.resolveSymbol(symbolName).then(onResultReady).catch(onError);
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}
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};
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UDFCompatibleDatafeedBase.prototype.getBars = function (symbolInfo, resolution, rangeStartDate, rangeEndDate, onResult, onError) {
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this._historyProvider.getBars(symbolInfo, resolution, rangeStartDate, rangeEndDate)
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.then(function (result) {
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onResult(result.bars, result.meta);
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})
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.catch(onError);
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};
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UDFCompatibleDatafeedBase.prototype.subscribeBars = function (symbolInfo, resolution, onTick, listenerGuid, onResetCacheNeededCallback) {
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this._dataPulseProvider.subscribeBars(symbolInfo, resolution, onTick, listenerGuid);
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};
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UDFCompatibleDatafeedBase.prototype.unsubscribeBars = function (listenerGuid) {
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this._dataPulseProvider.unsubscribeBars(listenerGuid);
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};
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UDFCompatibleDatafeedBase.prototype._requestConfiguration = function () {
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return this._send('config')
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.catch(function (reason) {
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logMessage("UdfCompatibleDatafeed: Cannot get datafeed configuration - use default, error=" + getErrorMessage(reason));
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return null;
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});
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};
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UDFCompatibleDatafeedBase.prototype._send = function (urlPath, params) {
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return this._requester.sendRequest(this._datafeedURL, urlPath, params);
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};
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UDFCompatibleDatafeedBase.prototype._setupWithConfiguration = function (configurationData) {
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this._configuration = configurationData;
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if (configurationData.exchanges === undefined) {
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configurationData.exchanges = [];
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}
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if (!configurationData.supports_search && !configurationData.supports_group_request) {
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throw new Error('Unsupported datafeed configuration. Must either support search, or support group request');
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}
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if (configurationData.supports_group_request || !configurationData.supports_search) {
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this._symbolsStorage = new SymbolsStorage(this._datafeedURL, configurationData.supported_resolutions || [], this._requester);
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}
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logMessage("UdfCompatibleDatafeed: Initialized with " + JSON.stringify(configurationData));
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};
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return UDFCompatibleDatafeedBase;
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}());
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export { UDFCompatibleDatafeedBase };
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function defaultConfiguration() {
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return {
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supports_search: false,
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supports_group_request: true,
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supported_resolutions: ['1', '5', '15', '30', '60', '1D', '1W', '1M'],
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supports_marks: false,
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supports_timescale_marks: false,
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};
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}
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