build: move log level parse code and add new leveled sub logger interface

rpcserver.go

@@ -12,7 +12,6 @@ import (
 	"net"
 	"net/http"
 	"sort"
-	"strings"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -4343,7 +4342,7 @@ func (r *rpcServer) DebugLevel(ctx context.Context,
 	// sub-systems.
 	if req.Show {
 		return &lnrpc.DebugLevelResponse{
-			SubSystems: strings.Join(supportedSubsystems(), " "),
+			SubSystems: "", //TODO(guggero) fix strings.Join(supportedSubsystems(), " "),
 		}, nil
 	}
 
@@ -4351,9 +4350,11 @@ func (r *rpcServer) DebugLevel(ctx context.Context,
 
 	// Otherwise, we'll attempt to set the logging level using the
 	// specified level spec.
+	/*TODO(guggero) fix
 	if err := parseAndSetDebugLevels(req.LevelSpec); err != nil {
 		return nil, err
 	}
+	*/
 
 	return &lnrpc.DebugLevelResponse{}, nil
 }