mirror of
https://github.com/d0zingcat/gocryptotrader.git
synced 2026-05-31 07:26:44 +00:00
Added support for Binance exchange
This commit is contained in:
Ryan O'Hara-Reid
497
exchanges/binance/binance.go
Normal file
497
exchanges/binance/binance.go
Normal file
@@ -0,0 +1,497 @@
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package binance
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import (
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"bytes"
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"errors"
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"fmt"
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"log"
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"net/url"
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"strconv"
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"time"
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"github.com/thrasher-/gocryptotrader/common"
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"github.com/thrasher-/gocryptotrader/config"
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exchange "github.com/thrasher-/gocryptotrader/exchanges"
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"github.com/thrasher-/gocryptotrader/exchanges/ticker"
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)
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// Binance is the overarching type across the Bithumb package
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type Binance struct {
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exchange.Base
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// valid string list that a required by the exchange
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validLimits []string
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validIntervals []string
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}
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const (
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apiURL = "https://api.binance.com"
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// Public endpoints
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exchangeInfo = "/api/v1/exchangeInfo"
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orderBookDepth = "/api/v1/depth"
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recentTrades = "/api/v1/trades"
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historicalTrades = "/api/v1/historicalTrades"
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aggregatedTrades = "/api/v1/aggTrades"
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candleStick = "/api/v1/klines"
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priceChange = "/api/v1/ticker/24hr"
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symbolPrice = "/api/v3/ticker/price"
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bestPrice = "/api/v3/ticker/bookTicker"
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// Authenticated endpoints
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newOrderTest = "/api/v3/order/test"
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newOrder = "/api/v3/order"
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queryOrder = "/api/v3/order"
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)
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// SetDefaults sets the basic defaults for Binance
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func (b *Binance) SetDefaults() {
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b.Name = "Binance"
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b.Enabled = false
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b.Verbose = false
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b.Websocket = false
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b.RESTPollingDelay = 10
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b.RequestCurrencyPairFormat.Delimiter = ""
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b.RequestCurrencyPairFormat.Uppercase = true
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b.ConfigCurrencyPairFormat.Delimiter = ""
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b.ConfigCurrencyPairFormat.Uppercase = true
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b.AssetTypes = []string{ticker.Spot}
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b.SetValues()
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}
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// Setup takes in the supplied exchange configuration details and sets params
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func (b *Binance) Setup(exch config.ExchangeConfig) {
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if !exch.Enabled {
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b.SetEnabled(false)
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} else {
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b.Enabled = true
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b.AuthenticatedAPISupport = exch.AuthenticatedAPISupport
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b.SetAPIKeys(exch.APIKey, exch.APISecret, "", false)
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b.RESTPollingDelay = exch.RESTPollingDelay
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b.Verbose = exch.Verbose
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b.Websocket = exch.Websocket
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b.BaseCurrencies = common.SplitStrings(exch.BaseCurrencies, ",")
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b.AvailablePairs = common.SplitStrings(exch.AvailablePairs, ",")
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b.EnabledPairs = common.SplitStrings(exch.EnabledPairs, ",")
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err := b.SetCurrencyPairFormat()
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if err != nil {
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log.Fatal(err)
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}
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err = b.SetAssetTypes()
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if err != nil {
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log.Fatal(err)
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}
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}
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}
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// GetExchangeValidCurrencyPairs returns the full pair list from the exchange
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// at the moment do not integrate with config currency pairs automatically
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func (b *Binance) GetExchangeValidCurrencyPairs() (string, error) {
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var validCurrencyPairs []string
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info, err := b.GetExchangeInfo()
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if err != nil {
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return "", err
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}
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for _, symbol := range info.Symbols {
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validCurrencyPairs = append(validCurrencyPairs, symbol.Symbol)
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}
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return common.JoinStrings(validCurrencyPairs, ","), nil
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}
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// GetExchangeInfo returns exchange information. Check binance_types for more
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// information
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func (b *Binance) GetExchangeInfo() (ExchangeInfo, error) {
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var resp ExchangeInfo
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path := apiURL + exchangeInfo
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return resp, common.SendHTTPGetRequest(path, true, b.Verbose, &resp)
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}
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// GetOrderBook returns full orderbook information
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//
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// symbol: string of currency pair
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// limit: returned limit amount
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func (b *Binance) GetOrderBook(symbol string, limit int64) (OrderBook, error) {
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orderbook, resp := OrderBook{}, OrderBookData{}
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if err := b.CheckLimit(limit); err != nil {
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return orderbook, err
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}
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if err := b.CheckSymbol(symbol); err != nil {
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return orderbook, err
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}
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params := url.Values{}
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params.Set("symbol", common.StringToUpper(symbol))
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params.Set("limit", strconv.FormatInt(limit, 10))
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path := fmt.Sprintf("%s%s?%s", apiURL, orderBookDepth, params.Encode())
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if err := common.SendHTTPGetRequest(path, true, b.Verbose, &resp); err != nil {
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return orderbook, err
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}
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for _, asks := range resp.Asks {
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var ASK struct {
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Price float64
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Quantity float64
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}
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for i, ask := range asks.([]interface{}) {
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switch i {
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case 0:
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ASK.Price, _ = strconv.ParseFloat(ask.(string), 64)
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case 1:
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ASK.Quantity, _ = strconv.ParseFloat(ask.(string), 64)
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}
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orderbook.Asks = append(orderbook.Asks, ASK)
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}
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}
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for _, bids := range resp.Bids {
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var BID struct {
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Price float64
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Quantity float64
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}
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for i, bid := range bids.([]interface{}) {
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switch i {
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case 0:
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BID.Price, _ = strconv.ParseFloat(bid.(string), 64)
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case 1:
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BID.Quantity, _ = strconv.ParseFloat(bid.(string), 64)
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}
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orderbook.Bids = append(orderbook.Bids, BID)
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}
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}
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return orderbook, nil
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}
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// GetRecentTrades returns recent trade activity
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//
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// symbol: string of currency pair
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// limit: returned limit amount WARNING: MAX 500!
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func (b *Binance) GetRecentTrades(symbol string, limit int64) ([]RecentTrade, error) {
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resp := []RecentTrade{}
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if err := b.CheckLimit(limit); err != nil {
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return resp, err
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}
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if err := b.CheckSymbol(symbol); err != nil {
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return resp, err
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}
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params := url.Values{}
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params.Set("symbol", common.StringToUpper(symbol))
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params.Set("limit", strconv.FormatInt(limit, 10))
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path := fmt.Sprintf("%s%s?%s", apiURL, recentTrades, params.Encode())
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return resp, common.SendHTTPGetRequest(path, true, b.Verbose, &resp)
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}
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// GetHistoricalTrades returns historical trade activity
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//
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// symbol: string of currency pair
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// limit: returned limit amount WARNING: MAX 500! (NOT REQUIRED)
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// fromID:
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func (b *Binance) GetHistoricalTrades(symbol string, limit, fromID int64) ([]HistoricalTrade, error) {
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resp := []HistoricalTrade{}
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if err := b.CheckLimit(limit); err != nil {
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return resp, err
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}
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if err := b.CheckSymbol(symbol); err != nil {
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return resp, err
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}
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params := url.Values{}
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params.Set("symbol", common.StringToUpper(symbol))
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params.Set("limit", strconv.FormatInt(limit, 10))
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params.Set("fromid", strconv.FormatInt(fromID, 10))
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path := fmt.Sprintf("%s%s?%s", apiURL, historicalTrades, params.Encode())
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return resp, common.SendHTTPGetRequest(path, true, b.Verbose, &resp)
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}
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// GetAggregatedTrades returns aggregated trade activity
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//
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// symbol: string of currency pair
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// limit: returned limit amount WARNING: MAX 500!
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func (b *Binance) GetAggregatedTrades(symbol string, limit int64) ([]AggregatedTrade, error) {
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resp := []AggregatedTrade{}
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if err := b.CheckLimit(limit); err != nil {
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return resp, err
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}
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if err := b.CheckSymbol(symbol); err != nil {
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return resp, err
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}
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params := url.Values{}
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params.Set("symbol", common.StringToUpper(symbol))
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params.Set("limit", strconv.FormatInt(limit, 10))
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path := fmt.Sprintf("%s%s?%s", apiURL, aggregatedTrades, params.Encode())
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return resp, common.SendHTTPGetRequest(path, true, b.Verbose, &resp)
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}
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// GetCandleStickData returns candle stick data
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//
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// symbol:
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// limit:
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// interval
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func (b *Binance) GetCandleStickData(symbol, interval string, limit int64) ([]CandleStick, error) {
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var resp interface{}
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var kline []CandleStick
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if err := b.CheckLimit(limit); err != nil {
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return kline, err
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}
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if err := b.CheckSymbol(symbol); err != nil {
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return kline, err
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}
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if err := b.CheckIntervals(interval); err != nil {
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return kline, err
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}
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params := url.Values{}
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params.Set("symbol", common.StringToUpper(symbol))
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params.Set("limit", strconv.FormatInt(limit, 10))
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params.Set("interval", interval)
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path := fmt.Sprintf("%s%s?%s", apiURL, candleStick, params.Encode())
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if err := common.SendHTTPGetRequest(path, true, b.Verbose, &resp); err != nil {
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return kline, err
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}
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for _, responseData := range resp.([]interface{}) {
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var candle CandleStick
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for i, individualData := range responseData.([]interface{}) {
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switch i {
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case 0:
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candle.OpenTime = individualData.(float64)
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case 1:
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candle.Open, _ = strconv.ParseFloat(individualData.(string), 64)
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case 2:
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candle.High, _ = strconv.ParseFloat(individualData.(string), 64)
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case 3:
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candle.Low, _ = strconv.ParseFloat(individualData.(string), 64)
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case 4:
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candle.Close, _ = strconv.ParseFloat(individualData.(string), 64)
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case 5:
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candle.Volume, _ = strconv.ParseFloat(individualData.(string), 64)
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case 6:
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candle.CloseTime = individualData.(float64)
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case 7:
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candle.QuoteAssetVolume, _ = strconv.ParseFloat(individualData.(string), 64)
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case 8:
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candle.TradeCount = individualData.(float64)
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case 9:
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candle.TakerBuyAssetVolume, _ = strconv.ParseFloat(individualData.(string), 64)
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case 10:
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candle.TakerBuyQuoteAssetVolume, _ = strconv.ParseFloat(individualData.(string), 64)
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}
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}
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kline = append(kline, candle)
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}
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return kline, nil
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}
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// GetPriceChangeStats returns price change statistics for the last 24 hours
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//
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// symbol: string of currency pair
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func (b *Binance) GetPriceChangeStats(symbol string) (PriceChangeStats, error) {
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resp := PriceChangeStats{}
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if err := b.CheckSymbol(symbol); err != nil {
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return resp, err
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}
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params := url.Values{}
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params.Set("symbol", common.StringToUpper(symbol))
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path := fmt.Sprintf("%s%s?%s", apiURL, priceChange, params.Encode())
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return resp, common.SendHTTPGetRequest(path, true, b.Verbose, &resp)
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}
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// GetLatestSpotPrice returns latest spot price of symbol
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//
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// symbol: string of currency pair
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func (b *Binance) GetLatestSpotPrice(symbol string) (SymbolPrice, error) {
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resp := SymbolPrice{}
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if err := b.CheckSymbol(symbol); err != nil {
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return resp, err
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}
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params := url.Values{}
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params.Set("symbol", common.StringToUpper(symbol))
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path := fmt.Sprintf("%s%s?%s", apiURL, symbolPrice, params.Encode())
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return resp, common.SendHTTPGetRequest(path, true, b.Verbose, &resp)
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}
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// GetBestPrice returns the latest best price for symbol
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//
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// symbol: string of currency pair
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func (b *Binance) GetBestPrice(symbol string) (BestPrice, error) {
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resp := BestPrice{}
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if err := b.CheckSymbol(symbol); err != nil {
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return resp, err
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}
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params := url.Values{}
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params.Set("symbol", common.StringToUpper(symbol))
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path := fmt.Sprintf("%s%s?%s", apiURL, bestPrice, params.Encode())
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return resp, common.SendHTTPGetRequest(path, true, b.Verbose, &resp)
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}
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// NewOrderTest sends a new order
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func (b *Binance) NewOrderTest() (interface{}, error) {
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var resp interface{}
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path := fmt.Sprintf("%s%s", apiURL, newOrderTest)
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params := url.Values{}
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params.Set("symbol", "BTCUSDT")
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params.Set("side", "BUY")
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params.Set("type", "MARKET")
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params.Set("quantity", "0.1")
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return resp, b.SendAuthHTTPRequest("POST", path, params, &resp)
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}
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// NewOrder sends a new order to Binance
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func (b *Binance) NewOrder(o NewOrderRequest) (NewOrderResponse, error) {
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var resp NewOrderResponse
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path := fmt.Sprintf("%s%s", apiURL, newOrderTest)
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params := url.Values{}
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params.Set("symbol", o.Symbol)
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params.Set("side", o.Side)
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params.Set("type", o.TradeType)
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params.Set("timeInForce", o.TimeInForce)
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params.Set("quantity", strconv.FormatFloat(o.Quantity, 'f', -1, 64))
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params.Set("price", strconv.FormatFloat(o.Price, 'f', -1, 64))
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params.Set("newClientOrderID", o.NewClientOrderID)
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params.Set("stopPrice", strconv.FormatFloat(o.StopPrice, 'f', -1, 64))
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params.Set("icebergQty", strconv.FormatFloat(o.IcebergQty, 'f', -1, 64))
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params.Set("newOrderRespType", o.NewOrderRespType)
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if err := b.SendAuthHTTPRequest("POST", path, params, &resp); err != nil {
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return resp, err
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}
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if resp.Code != 0 {
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return resp, errors.New(resp.Msg)
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}
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return resp, nil
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}
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// QueryOrder returns information on a past order
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func (b *Binance) QueryOrder(symbol, origClientOrderID string, orderID int64) (QueryOrderData, error) {
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var resp QueryOrderData
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path := fmt.Sprintf("%s%s", apiURL, queryOrder)
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params := url.Values{}
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params.Set("symbol", common.StringToUpper(symbol))
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params.Set("origClientOrderId", origClientOrderID)
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params.Set("orderId", strconv.FormatInt(orderID, 10))
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if err := b.SendAuthHTTPRequest("GET", path, params, &resp); err != nil {
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return resp, err
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}
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if resp.Code != 0 {
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return resp, errors.New(resp.Msg)
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}
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return resp, nil
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}
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// SendAuthHTTPRequest something
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func (b *Binance) SendAuthHTTPRequest(method, path string, params url.Values, result interface{}) error {
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if !b.AuthenticatedAPISupport {
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return fmt.Errorf(exchange.WarningAuthenticatedRequestWithoutCredentialsSet, b.Name)
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}
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if params == nil {
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params = url.Values{}
|
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}
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params.Set("recvWindow", strconv.FormatInt(5000, 10))
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params.Set("timestamp", strconv.FormatInt(time.Now().Unix()*1000, 10))
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signature := params.Encode()
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hmacSigned := common.GetHMAC(common.HashSHA256, []byte(signature), []byte(b.APISecret))
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hmacSignedStr := common.HexEncodeToString(hmacSigned)
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params.Set("signature", hmacSignedStr)
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if b.Nonce.Get() == 0 {
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b.Nonce.Set(time.Now().UnixNano() / int64(time.Millisecond))
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} else {
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b.Nonce.Inc()
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}
|
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headers := make(map[string]string)
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headers["X-MBX-APIKEY"] = b.APIKey
|
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headers["Content-Type"] = "application/x-www-form-urlencoded"
|
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|
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if b.Verbose {
|
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log.Printf("sent path: \n%s\n", path)
|
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}
|
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|
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resp, err := common.SendHTTPRequest(method, path, headers, bytes.NewBufferString(params.Encode()))
|
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if err != nil {
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return err
|
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}
|
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|
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if b.Verbose {
|
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log.Printf("Received raw: \n%s\n", resp)
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}
|
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|
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if err = common.JSONDecode([]byte(resp), &result); err != nil {
|
||||
return errors.New("sendAuthenticatedHTTPRequest: Unable to JSON Unmarshal response." + err.Error())
|
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}
|
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return nil
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}
|
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// CheckLimit checks value against a variable list
|
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func (b *Binance) CheckLimit(limit int64) error {
|
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if !common.DataContains(b.validLimits, strconv.FormatInt(limit, 10)) {
|
||||
return errors.New("Incorrect limit values - valid values are 5, 10, 20, 50, 100, 500, 1000")
|
||||
}
|
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return nil
|
||||
}
|
||||
|
||||
// CheckSymbol checks value against a variable list
|
||||
func (b *Binance) CheckSymbol(symbol string) error {
|
||||
if !common.DataContains(b.AvailablePairs, symbol) {
|
||||
return errors.New("Incorrect symbol values - please check available pairs in configuration")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// CheckIntervals checks value against a variable list
|
||||
func (b *Binance) CheckIntervals(interval string) error {
|
||||
if !common.DataContains(b.validIntervals, interval) {
|
||||
return errors.New(`Incorrect interval values - valid values are "1m","3m","5m","15m","30m","1h","2h","4h","6h","8h","12h","1d","3d","1w","1M"`)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// SetValues sets the default valid values
|
||||
func (b *Binance) SetValues() {
|
||||
b.validLimits = []string{"5", "10", "20", "50", "100", "500", "1000"}
|
||||
b.validIntervals = []string{"1m", "3m", "5m", "15m", "30m", "1h", "2h", "4h", "6h", "8h", "12h", "1d", "3d", "1w", "1M"}
|
||||
}
|
||||
Reference in New Issue
Block a user