Initial commit

exchange/hyperliquid.go

@@ -0,0 +1,66 @@
+package exchange
+
+import (
+	"encoding/json"
+	"log"
+	"strconv"
+	"time"
+)
+
+type HyperLiquidWS struct {
+	Tracked []string
+}
+
+type hlAllMidsMsg struct {
+	Channel string          `json:"channel"`
+	Data    json.RawMessage `json:"data"`
+}
+
+type hlMidsData struct {
+	Mids map[string]string `json:"mids"`
+}
+
+func NewHyperLiquidWS(tracked []string) *HyperLiquidWS {
+	return &HyperLiquidWS{Tracked: tracked}
+}
+// Run connects to HyperLiquid WS and streams mid prices.
+func (h *HyperLiquidWS) Run(updateFn func(coin string, price, bid, ask float64)) error {
+	conn := NewPriceConnector("wss://api.hyperliquid.xyz/ws", "HyperLiquid", 120*time.Second, 30*time.Second)
+	conn.PingInterval = 45 * time.Second
+
+	conn.OnConnect = func() {
+		log.Printf("[HL WS] Connected")
+		sub := map[string]interface{}{
+			"method": "subscribe",
+			"subscription": map[string]string{
+				"type": "allMids",
+			},
+		}
+		if err := conn.SendJSON(sub); err != nil {
+			log.Printf("[HL WS] Subscribe error: %v", err)
+		}
+	}
+
+	conn.OnMessage = func(msg []byte) {
+		var raw hlAllMidsMsg
+		if err := json.Unmarshal(msg, &raw); err != nil {
+			return
+		}
+		if raw.Channel != "allMids" {
+			return
+		}
+		var data hlMidsData
+		if err := json.Unmarshal(raw.Data, &data); err != nil {
+			return
+		}
+		for coin, priceStr := range data.Mids {
+			price, err := strconv.ParseFloat(priceStr, 64)
+			if err != nil || price <= 0 {
+				continue
+			}
+			updateFn(coin, price, 0, 0)
+		}
+	}
+
+	return conn.Run()
+}