rpc: make debug-level log output less verbose

rpc/endpoints.go

@@ -18,21 +18,30 @@ package rpc
 
 import (
 	"net"
+	"strings"
 
 	"github.com/ethereum/go-ethereum/log"
 )
 
 // StartIPCEndpoint starts an IPC endpoint.
 func StartIPCEndpoint(ipcEndpoint string, apis []API) (net.Listener, *Server, error) {
 	// Register all the APIs exposed by the services.
-	handler := NewServer()
+	var (
+		handler    = NewServer()
+		regMap     = make(map[string]struct{})
+		registered []string
+	)
 	for _, api := range apis {
 		if err := handler.RegisterName(api.Namespace, api.Service); err != nil {
 			log.Info("IPC registration failed", "namespace", api.Namespace, "error", err)
 			return nil, nil, err
 		}
-		log.Debug("IPC registered", "namespace", api.Namespace)
+		if _, ok := regMap[api.Namespace]; !ok {
+			registered = append(registered, api.Namespace)
+			regMap[api.Namespace] = struct{}{}
+		}
 	}
+	log.Debug("IPCs registered", "namespaces", strings.Join(registered, ","))
 	// All APIs registered, start the IPC listener.
 	listener, err := ipcListen(ipcEndpoint)
 	if err != nil {