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https://github.com/c9s/bbgo.git
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482 lines
12 KiB
Go
482 lines
12 KiB
Go
package binance
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import (
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"encoding/json"
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"errors"
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"fmt"
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"time"
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"github.com/adshao/go-binance/v2"
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"github.com/valyala/fastjson"
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"github.com/c9s/bbgo/pkg/datatype"
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"github.com/c9s/bbgo/pkg/fixedpoint"
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"github.com/c9s/bbgo/pkg/types"
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"github.com/c9s/bbgo/pkg/util"
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)
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/*
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executionReport
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{
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"e": "executionReport", // Event type
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"E": 1499405658658, // Event time
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"s": "ETHBTC", // Symbol
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"c": "mUvoqJxFIILMdfAW5iGSOW", // Client order ID
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"S": "BUY", // Side
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"o": "LIMIT", // Order type
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"f": "GTC", // Time in force
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"q": "1.00000000", // Order quantity
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"p": "0.10264410", // Order price
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"P": "0.00000000", // Stop price
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"F": "0.00000000", // Iceberg quantity
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"g": -1, // OrderListId
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"C": null, // Original client order ID; This is the ID of the order being canceled
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"x": "NEW", // Current execution type
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"X": "NEW", // Current order status
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"r": "NONE", // Order reject reason; will be an error code.
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"i": 4293153, // Order ID
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"l": "0.00000000", // Last executed quantity
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"z": "0.00000000", // Cumulative filled quantity
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"L": "0.00000000", // Last executed price
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"n": "0", // Commission amount
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"N": null, // Commission asset
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"T": 1499405658657, // Transaction time
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"t": -1, // Trade ID
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"I": 8641984, // Ignore
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"w": true, // Is the order on the book?
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"m": false, // Is this trade the maker side?
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"M": false, // Ignore
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"O": 1499405658657, // Order creation time
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"Z": "0.00000000", // Cumulative quote asset transacted quantity
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"Y": "0.00000000", // Last quote asset transacted quantity (i.e. lastPrice * lastQty)
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"Q": "0.00000000" // Quote Order Qty
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}
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*/
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type ExecutionReportEvent struct {
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EventBase
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Symbol string `json:"s"`
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ClientOrderID string `json:"c"`
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Side string `json:"S"`
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OrderType string `json:"o"`
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TimeInForce string `json:"f"`
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OrderQuantity string `json:"q"`
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OrderPrice string `json:"p"`
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StopPrice string `json:"P"`
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IsOnBook bool `json:"w"`
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IsMaker bool `json:"m"`
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CommissionAmount string `json:"n"`
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CommissionAsset string `json:"N"`
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CurrentExecutionType string `json:"x"`
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CurrentOrderStatus string `json:"X"`
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OrderID int64 `json:"i"`
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Ignored int64 `json:"I"`
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TradeID int64 `json:"t"`
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TransactionTime int64 `json:"T"`
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LastExecutedQuantity string `json:"l"`
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CumulativeFilledQuantity string `json:"z"`
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LastExecutedPrice string `json:"L"`
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LastQuoteAssetTransactedQuantity string `json:"Y"`
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OrderCreationTime int64 `json:"O"`
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}
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func (e *ExecutionReportEvent) Order() (*types.Order, error) {
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switch e.CurrentExecutionType {
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case "NEW", "CANCELED", "REJECTED", "EXPIRED":
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case "REPLACED":
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default:
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return nil, errors.New("execution report type is not for order")
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}
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orderCreationTime := time.Unix(0, e.OrderCreationTime*int64(time.Millisecond))
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return &types.Order{
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SubmitOrder: types.SubmitOrder{
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Symbol: e.Symbol,
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ClientOrderID: e.ClientOrderID,
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Side: toGlobalSideType(binance.SideType(e.Side)),
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Type: toGlobalOrderType(binance.OrderType(e.OrderType)),
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Quantity: util.MustParseFloat(e.OrderQuantity),
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Price: util.MustParseFloat(e.OrderPrice),
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TimeInForce: e.TimeInForce,
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},
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OrderID: uint64(e.OrderID),
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Status: toGlobalOrderStatus(binance.OrderStatusType(e.CurrentOrderStatus)),
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ExecutedQuantity: util.MustParseFloat(e.CumulativeFilledQuantity),
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CreationTime: datatype.Time(orderCreationTime),
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}, nil
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}
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func (e *ExecutionReportEvent) Trade() (*types.Trade, error) {
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if e.CurrentExecutionType != "TRADE" {
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return nil, errors.New("execution report is not a trade")
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}
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tt := time.Unix(0, e.TransactionTime*int64(time.Millisecond))
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return &types.Trade{
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ID: e.TradeID,
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Symbol: e.Symbol,
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OrderID: uint64(e.OrderID),
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Side: toGlobalSideType(binance.SideType(e.Side)),
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Price: util.MustParseFloat(e.LastExecutedPrice),
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Quantity: util.MustParseFloat(e.LastExecutedQuantity),
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QuoteQuantity: util.MustParseFloat(e.LastQuoteAssetTransactedQuantity),
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IsBuyer: e.Side == "BUY",
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IsMaker: e.IsMaker,
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Time: datatype.Time(tt),
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Fee: util.MustParseFloat(e.CommissionAmount),
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FeeCurrency: e.CommissionAsset,
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}, nil
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}
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/*
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balanceUpdate
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{
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"e": "balanceUpdate", //KLineEvent Type
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"E": 1573200697110, //KLineEvent Time
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"a": "BTC", //Asset
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"d": "100.00000000", //Balance Delta
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"T": 1573200697068 //Clear Time
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}
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*/
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type BalanceUpdateEvent struct {
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EventBase
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Asset string `json:"a"`
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Delta string `json:"d"`
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ClearTime int64 `json:"T"`
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}
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/*
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outboundAccountInfo
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{
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"e": "outboundAccountInfo", // KLineEvent type
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"E": 1499405658849, // KLineEvent time
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"m": 0, // Maker commission rate (bips)
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"t": 0, // Taker commission rate (bips)
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"b": 0, // Buyer commission rate (bips)
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"s": 0, // Seller commission rate (bips)
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"T": true, // Can trade?
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"W": true, // Can withdraw?
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"D": true, // Can deposit?
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"u": 1499405658848, // Time of last account update
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"B": [ // Balances array
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{
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"a": "LTC", // Asset
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"f": "17366.18538083", // Free amount
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"l": "0.00000000" // Locked amount
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},
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{
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"a": "BTC",
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"f": "10537.85314051",
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"l": "2.19464093"
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},
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{
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"a": "ETH",
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"f": "17902.35190619",
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"l": "0.00000000"
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},
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{
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"a": "BNC",
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"f": "1114503.29769312",
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"l": "0.00000000"
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},
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{
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"a": "NEO",
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"f": "0.00000000",
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"l": "0.00000000"
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}
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],
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"P": [ // Account Permissions
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"SPOT"
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]
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}
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*/
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type Balance struct {
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Asset string `json:"a"`
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Free string `json:"f"`
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Locked string `json:"l"`
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}
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type OutboundAccountPositionEvent struct {
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EventBase
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LastAccountUpdateTime int `json:"u"`
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Balances []Balance `json:"B,omitempty"`
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}
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type OutboundAccountInfoEvent struct {
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EventBase
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MakerCommissionRate int `json:"m"`
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TakerCommissionRate int `json:"t"`
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BuyerCommissionRate int `json:"b"`
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SellerCommissionRate int `json:"s"`
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CanTrade bool `json:"T"`
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CanWithdraw bool `json:"W"`
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CanDeposit bool `json:"D"`
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LastAccountUpdateTime int `json:"u"`
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Balances []Balance `json:"B,omitempty"`
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Permissions []string `json:"P,omitempty"`
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}
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type ResultEvent struct {
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Result interface{} `json:"result,omitempty"`
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ID int `json:"id"`
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}
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func ParseEvent(message string) (interface{}, error) {
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val, err := fastjson.Parse(message)
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if err != nil {
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return nil, err
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}
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eventType := string(val.GetStringBytes("e"))
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switch eventType {
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case "kline":
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var event KLineEvent
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err := json.Unmarshal([]byte(message), &event)
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return &event, err
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case "outboundAccountPosition":
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var event OutboundAccountPositionEvent
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err := json.Unmarshal([]byte(message), &event)
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return &event, err
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case "outboundAccountInfo":
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var event OutboundAccountInfoEvent
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err := json.Unmarshal([]byte(message), &event)
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return &event, err
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case "balanceUpdate":
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var event BalanceUpdateEvent
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err := json.Unmarshal([]byte(message), &event)
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return &event, err
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case "executionReport":
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var event ExecutionReportEvent
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err := json.Unmarshal([]byte(message), &event)
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return &event, err
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case "depthUpdate":
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return parseDepthEvent(val)
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default:
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id := val.GetInt("id")
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if id > 0 {
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return &ResultEvent{ID: id}, nil
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}
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}
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return nil, fmt.Errorf("unsupported message: %s", message)
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}
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type DepthEntry struct {
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PriceLevel string
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Quantity string
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}
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type DepthEvent struct {
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EventBase
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Symbol string `json:"s"`
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FirstUpdateID int64 `json:"U"`
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FinalUpdateID int64 `json:"u"`
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Bids []DepthEntry
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Asks []DepthEntry
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}
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func (e *DepthEvent) OrderBook() (book types.OrderBook, err error) {
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book.Symbol = e.Symbol
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for _, entry := range e.Bids {
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quantity, err := fixedpoint.NewFromString(entry.Quantity)
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if err != nil {
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continue
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}
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price, err := fixedpoint.NewFromString(entry.PriceLevel)
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if err != nil {
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continue
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}
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pv := types.PriceVolume{
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Price: price,
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Volume: quantity,
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}
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book.Bids = book.Bids.Upsert(pv, true)
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}
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for _, entry := range e.Asks {
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quantity, err := fixedpoint.NewFromString(entry.Quantity)
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if err != nil {
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continue
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}
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price, err := fixedpoint.NewFromString(entry.PriceLevel)
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if err != nil {
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continue
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}
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pv := types.PriceVolume{
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Price: price,
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Volume: quantity,
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}
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book.Asks = book.Asks.Upsert(pv, false)
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}
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return
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}
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func parseDepthEntry(val *fastjson.Value) (*DepthEntry, error) {
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arr, err := val.Array()
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if err != nil {
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return nil, err
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}
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if len(arr) < 2 {
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return nil, errors.New("incorrect depth entry element length")
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}
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return &DepthEntry{
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PriceLevel: string(arr[0].GetStringBytes()),
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Quantity: string(arr[1].GetStringBytes()),
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}, nil
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}
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func parseDepthEvent(val *fastjson.Value) (*DepthEvent, error) {
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var err error
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var depth = &DepthEvent{
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EventBase: EventBase{
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Event: string(val.GetStringBytes("e")),
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Time: val.GetInt64("E"),
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},
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Symbol: string(val.GetStringBytes("s")),
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FirstUpdateID: val.GetInt64("U"),
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FinalUpdateID: val.GetInt64("u"),
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}
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for _, ev := range val.GetArray("b") {
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entry, err2 := parseDepthEntry(ev)
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if err2 != nil {
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err = err2
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continue
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}
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depth.Bids = append(depth.Bids, *entry)
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}
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for _, ev := range val.GetArray("a") {
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entry, err2 := parseDepthEntry(ev)
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if err2 != nil {
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err = err2
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continue
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}
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depth.Asks = append(depth.Asks, *entry)
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}
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return depth, err
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}
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type KLine struct {
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StartTime int64 `json:"t"`
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EndTime int64 `json:"T"`
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Symbol string `json:"s"`
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Interval string `json:"i"`
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Open string `json:"o"`
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Close string `json:"c"`
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High string `json:"h"`
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Low string `json:"l"`
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Volume string `json:"V"` // taker buy base asset volume (like 10 BTC)
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QuoteVolume string `json:"Q"` // taker buy quote asset volume (like 1000USDT)
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LastTradeID int `json:"L"`
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NumberOfTrades int64 `json:"n"`
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Closed bool `json:"x"`
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}
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type KLineEvent struct {
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EventBase
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Symbol string `json:"s"`
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KLine KLine `json:"k,omitempty"`
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}
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func (k *KLine) KLine() types.KLine {
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return types.KLine{
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Exchange: "binance",
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Symbol: k.Symbol,
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Interval: types.Interval(k.Interval),
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StartTime: time.Unix(0, k.StartTime*int64(time.Millisecond)),
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EndTime: time.Unix(0, k.EndTime*int64(time.Millisecond)),
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Open: util.MustParseFloat(k.Open),
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Close: util.MustParseFloat(k.Close),
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High: util.MustParseFloat(k.High),
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Low: util.MustParseFloat(k.Low),
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Volume: util.MustParseFloat(k.Volume),
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QuoteVolume: util.MustParseFloat(k.QuoteVolume),
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LastTradeID: uint64(k.LastTradeID),
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NumberOfTrades: uint64(k.NumberOfTrades),
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Closed: k.Closed,
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}
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}
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/*
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kline
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{
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"e": "kline", // KLineEvent type
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"E": 123456789, // KLineEvent time
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"s": "BNBBTC", // Symbol
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"k": {
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"t": 123400000, // Kline start time
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"T": 123460000, // Kline close time
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"s": "BNBBTC", // Symbol
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"i": "1m", // Interval
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"f": 100, // First trade ID
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"L": 200, // Last trade ID
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"o": "0.0010", // Open price
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"c": "0.0020", // Close price
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"h": "0.0025", // High price
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"l": "0.0015", // Low price
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"v": "1000", // Base asset volume
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"n": 100, // Number of trades
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"x": false, // Is this kline closed?
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"q": "1.0000", // Quote asset volume
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"V": "500", // Taker buy base asset volume
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"Q": "0.500", // Taker buy quote asset volume
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"B": "123456" // Ignore
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}
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}
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*/
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type EventBase struct {
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Event string `json:"e"` // event
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Time int64 `json:"E"`
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}
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