refactor(rpc): streamline RPC node selection and remove hardcoded defaults

src/task/listen_bsc.go

@@ -18,8 +18,6 @@ import (
 	"github.com/ethereum/go-ethereum/ethclient"
 )
 
-const bscDefaultWsURL = "wss://bsc.drpc.org"
-
 type bscRecipientSnapshot struct {
 	addrs map[string]struct{}
 }
@@ -68,7 +66,10 @@ func runBscListener(contracts []common.Address) {
 		}
 	}()
 
-	wsURL := resolveChainWsURL(mdb.NetworkBsc, bscDefaultWsURL)
+	wsURL, ok := resolveChainWsURL(mdb.NetworkBsc, "[BSC-WS]")
+	if !ok {
+		return
+	}
 	log.Sugar.Infof("[BSC-WS] connecting to %s watching %d contract(s)", wsURL, len(contracts))
 
 	query := ethereum.FilterQuery{

src/task/listen_chain_common.go

@@ -90,12 +90,22 @@ func loadChainTokenContracts(network, logPrefix string) []common.Address {
 }
 
 // resolveChainWsURL picks a healthy WS endpoint from rpc_nodes for the
-// given network, falling back to the provided default (usually the
-// public node URL) when no row is configured.
-func resolveChainWsURL(network, fallback string) string {
+// given network. If no enabled node is configured, the caller skips the
+// current listener run so admin-side disabled/deleted rows are respected.
+func resolveChainWsURL(network, logPrefix string) (string, bool) {
 	node, err := data.SelectRpcNode(network, mdb.RpcNodeTypeWs)
 	if err == nil && node != nil && node.ID > 0 {
-		return node.Url
+		rpcURL := strings.TrimSpace(node.Url)
+		if rpcURL != "" {
+			return rpcURL, true
+		}
+		log.Sugar.Errorf("%s rpc_nodes id=%d has empty url", logPrefix, node.ID)
+		return "", false
 	}
-	return fallback
+	if err != nil {
+		log.Sugar.Errorf("%s resolve rpc_nodes err=%v", logPrefix, err)
+	} else {
+		log.Sugar.Warnf("%s no enabled %s WS RPC node configured in rpc_nodes", logPrefix, network)
+	}
+	return "", false
 }

src/task/listen_chain_common_test.go

@@ -0,0 +1,67 @@
+package task
+
+import (
+	"testing"
+
+	"github.com/assimon/luuu/internal/testutil"
+	"github.com/assimon/luuu/model/dao"
+	"github.com/assimon/luuu/model/mdb"
+)
+
+func TestResolveChainWsURLRequiresEnabledRpcNode(t *testing.T) {
+	cleanup := testutil.SetupTestDatabases(t)
+	defer cleanup()
+
+	if got, ok := resolveChainWsURL(mdb.NetworkEthereum, "[TEST]"); ok {
+		t.Fatalf("resolveChainWsURL() = (%q, true), want false", got)
+	}
+}
+
+func TestResolveChainWsURLWithRow(t *testing.T) {
+	cleanup := testutil.SetupTestDatabases(t)
+	defer cleanup()
+
+	node := &mdb.RpcNode{
+		Network: mdb.NetworkEthereum,
+		Url:     " wss://ethereum.example.com ",
+		Type:    mdb.RpcNodeTypeWs,
+		Weight:  1,
+		Enabled: true,
+		Status:  mdb.RpcNodeStatusOk,
+	}
+	if err := dao.Mdb.Create(node).Error; err != nil {
+		t.Fatalf("seed rpc_node: %v", err)
+	}
+
+	got, ok := resolveChainWsURL(mdb.NetworkEthereum, "[TEST]")
+	if !ok {
+		t.Fatalf("resolveChainWsURL() ok=false, want true")
+	}
+	if got != "wss://ethereum.example.com" {
+		t.Fatalf("resolveChainWsURL() = %q, want wss://ethereum.example.com", got)
+	}
+}
+
+func TestResolveChainWsURLDisabledRow(t *testing.T) {
+	cleanup := testutil.SetupTestDatabases(t)
+	defer cleanup()
+
+	node := &mdb.RpcNode{
+		Network: mdb.NetworkEthereum,
+		Url:     "wss://disabled.example.com",
+		Type:    mdb.RpcNodeTypeWs,
+		Weight:  1,
+		Enabled: true,
+		Status:  mdb.RpcNodeStatusOk,
+	}
+	if err := dao.Mdb.Create(node).Error; err != nil {
+		t.Fatalf("seed rpc_node: %v", err)
+	}
+	if err := dao.Mdb.Model(node).Update("enabled", false).Error; err != nil {
+		t.Fatalf("disable rpc_node: %v", err)
+	}
+
+	if got, ok := resolveChainWsURL(mdb.NetworkEthereum, "[TEST]"); ok {
+		t.Fatalf("resolveChainWsURL() = (%q, true), want false", got)
+	}
+}

src/task/listen_eth.go

@@ -7,7 +7,6 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/assimon/luuu/config"
 	"github.com/assimon/luuu/model/data"
 	"github.com/assimon/luuu/model/mdb"
 	"github.com/assimon/luuu/model/service"
@@ -22,22 +21,6 @@ import (
 // Transfer 事件签名 — ERC-20 signature, same on every EVM chain.
 var transferEventHash = common.HexToHash("0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef")
 
-const ethereumDefaultWsURL = "wss://ethereum.publicnode.com"
-
-// resolveEthereumWsURL picks a healthy WS endpoint. Falls back to the
-// legacy .env value (if set) before the shared default — keeps existing
-// deployments working until the admin adds an rpc_nodes row.
-func resolveEthereumWsURL() string {
-	node, err := data.SelectRpcNode(mdb.NetworkEthereum, mdb.RpcNodeTypeWs)
-	if err == nil && node != nil && node.ID > 0 {
-		return node.Url
-	}
-	if u := config.GetEthereumWsUrl(); u != "" {
-		return u
-	}
-	return ethereumDefaultWsURL
-}
-
 type ethRecipientSnapshot struct {
 	addrs map[string]struct{}
 }
@@ -88,7 +71,10 @@ func runEthereumListener(contracts []common.Address) {
 		}
 	}()
 
-	wsURL := resolveEthereumWsURL()
+	wsURL, ok := resolveChainWsURL(mdb.NetworkEthereum, "[ETH-WS]")
+	if !ok {
+		return
+	}
 	log.Sugar.Infof("[ETH-WS] connecting to %s watching %d contract(s)", wsURL, len(contracts))
 
 	query := ethereum.FilterQuery{
@@ -145,4 +131,3 @@ func isWatchedEthRecipient(to common.Address) bool {
 	_, ok := snap.addrs[strings.ToLower(to.Hex())]
 	return ok
 }
-

src/task/listen_plasma.go

@@ -18,8 +18,6 @@ import (
 	"github.com/ethereum/go-ethereum/ethclient"
 )
 
-const plasmaDefaultWsURL = "wss://rpc.plasma.to"
-
 type plasmaRecipientSnapshot struct {
 	addrs map[string]struct{}
 }
@@ -67,7 +65,10 @@ func runPlasmaListener(contracts []common.Address) {
 		}
 	}()
 
-	wsURL := resolveChainWsURL(mdb.NetworkPlasma, plasmaDefaultWsURL)
+	wsURL, ok := resolveChainWsURL(mdb.NetworkPlasma, "[PLASMA-WS]")
+	if !ok {
+		return
+	}
 	log.Sugar.Infof("[PLASMA-WS] connecting to %s watching %d contract(s)", wsURL, len(contracts))
 
 	query := ethereum.FilterQuery{

src/task/listen_polygon.go

@@ -18,8 +18,6 @@ import (
 	"github.com/ethereum/go-ethereum/ethclient"
 )
 
-const polygonDefaultWsURL = "wss://polygon-bor-rpc.publicnode.com"
-
 type polygonRecipientSnapshot struct {
 	addrs map[string]struct{}
 }
@@ -67,7 +65,10 @@ func runPolygonListener(contracts []common.Address) {
 		}
 	}()
 
-	wsURL := resolveChainWsURL(mdb.NetworkPolygon, polygonDefaultWsURL)
+	wsURL, ok := resolveChainWsURL(mdb.NetworkPolygon, "[POLYGON-WS]")
+	if !ok {
+		return
+	}
 	log.Sugar.Infof("[POLYGON-WS] connecting to %s watching %d contract(s)", wsURL, len(contracts))
 
 	query := ethereum.FilterQuery{