Added support for Binance exchange

exchanges/binance/binance_wrapper.go

@@ -0,0 +1,95 @@
+package binance
+
+import (
+	"errors"
+	"log"
+
+	"github.com/thrasher-/gocryptotrader/common"
+	"github.com/thrasher-/gocryptotrader/currency/pair"
+	exchange "github.com/thrasher-/gocryptotrader/exchanges"
+	"github.com/thrasher-/gocryptotrader/exchanges/orderbook"
+	"github.com/thrasher-/gocryptotrader/exchanges/ticker"
+)
+
+// Start starts the OKEX go routine
+func (b *Binance) Start() {
+	go b.Run()
+}
+
+// Run implements the OKEX wrapper
+func (b *Binance) Run() {
+	if b.Verbose {
+		log.Printf("%s Websocket: %s. (url: %s).\n", b.GetName(), common.IsEnabled(b.Websocket), b.WebsocketURL)
+		log.Printf("%s polling delay: %ds.\n", b.GetName(), b.RESTPollingDelay)
+		log.Printf("%s %d currencies enabled: %s.\n", b.GetName(), len(b.EnabledPairs), b.EnabledPairs)
+	}
+}
+
+// UpdateTicker updates and returns the ticker for a currency pair
+func (b *Binance) UpdateTicker(p pair.CurrencyPair, assetType string) (ticker.Price, error) {
+	var tickerPrice ticker.Price
+
+	tick, err := b.GetPriceChangeStats(p.Pair().String())
+	if err != nil {
+		return tickerPrice, err
+	}
+
+	tickerPrice.Pair = p
+	tickerPrice.Ask = tick.AskPrice
+	tickerPrice.Bid = tick.BidPrice
+	tickerPrice.High = tick.HighPrice
+	tickerPrice.Last = tick.LastPrice
+	tickerPrice.Low = tick.LowPrice
+	tickerPrice.Volume = tick.LastQty
+
+	ticker.ProcessTicker(b.GetName(), p, tickerPrice, assetType)
+
+	return ticker.GetTicker(b.Name, p, assetType)
+}
+
+// GetTickerPrice returns the ticker for a currency pair
+func (b *Binance) GetTickerPrice(p pair.CurrencyPair, assetType string) (ticker.Price, error) {
+	tickerNew, err := ticker.GetTicker(b.GetName(), p, assetType)
+	if err != nil {
+		return b.UpdateTicker(p, assetType)
+	}
+	return tickerNew, nil
+}
+
+// GetOrderbookEx returns orderbook base on the currency pair
+func (b *Binance) GetOrderbookEx(currency pair.CurrencyPair, assetType string) (orderbook.Base, error) {
+	ob, err := orderbook.GetOrderbook(b.GetName(), currency, assetType)
+	if err != nil {
+		return b.UpdateOrderbook(currency, assetType)
+	}
+	return ob, nil
+}
+
+// UpdateOrderbook updates and returns the orderbook for a currency pair
+func (b *Binance) UpdateOrderbook(p pair.CurrencyPair, assetType string) (orderbook.Base, error) {
+	var orderBook orderbook.Base
+	currency := p.GetFirstCurrency().String()
+
+	orderbookNew, err := b.GetOrderBook(currency, 1000)
+	if err != nil {
+		return orderBook, err
+	}
+
+	for _, bids := range orderbookNew.Bids {
+		orderBook.Bids = append(orderBook.Bids, orderbook.Item{Amount: bids.Quantity, Price: bids.Price})
+	}
+
+	for _, asks := range orderbookNew.Asks {
+		orderBook.Asks = append(orderBook.Asks, orderbook.Item{Amount: asks.Quantity, Price: asks.Price})
+	}
+
+	orderbook.ProcessOrderbook(b.GetName(), p, orderBook, assetType)
+	return orderbook.GetOrderbook(b.Name, p, assetType)
+}
+
+// GetExchangeAccountInfo retrieves balances for all enabled currencies for the
+// Bithumb exchange
+func (b *Binance) GetExchangeAccountInfo() (exchange.AccountInfo, error) {
+	var response exchange.AccountInfo
+	return response, errors.New("not implemented")
+}