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65 lines
2.0 KiB
JavaScript
65 lines
2.0 KiB
JavaScript
'use strict';
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const ccxt = require ('ccxt');
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// your version must be 0.7+
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console.log ('CCXT Version:', ccxt.version)
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function handle (exchange, symbol, timeframe, candles) {
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const lastCandle = candles[candles.length - 1]
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const lastClosingPrice = lastCandle[4]
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console.log (new Date (), exchange.id, timeframe, symbol, '\t', lastClosingPrice)
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}
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async function loop (exchange, symbol, timeframe) {
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while (true) {
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try {
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const candles = await exchange.watchOHLCV (symbol, timeframe)
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handle (exchange, symbol, timeframe, candles)
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} catch (e) {
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console.log (symbol, e)
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// do nothing and retry on next loop iteration
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// throw e // uncomment to break all loops in case of an error in any one of them
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// break // you can also break just this one loop if it fails
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}
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}
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}
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async function main () {
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const exchange = new ccxt.pro.binanceusdm () // usd(s)-margined contracts
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//
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// or
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//
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// const exchange = new ccxt.pro.binance () // spot markets
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//
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// WARNING: when using the spot markets mind subscription limits!
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// don't attempt to subscribe to all of them
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// the exchanges will not allow that in general
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// instead, specify a shorter list of symbols to subscribe to
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//
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// or
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//
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// const exchange = new ccxt.pro.binancecoinm () // coin-margined contracts
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if (exchange.has['watchOHLCV']) {
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await exchange.loadMarkets ()
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const timeframe = '15m'
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// many symbols
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await Promise.all (exchange.symbols.map (symbol => loop (exchange, symbol, timeframe)))
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//
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// or
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//
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// const symbols = [ 'BTC/USDT', 'ETH/USDT' ] // specific symbols
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// await Promise.all (symbols.map (symbol => loop (exchange, symbol, timeframe)))
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//
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// or
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//
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// await loop (exchange, 'BTC/USDT', timeframe) // one symbol
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} else {
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console.log (exchange.id, 'does not support watchOHLCV yet')
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}
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}
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main ()
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