Update grpc_connections.h

Author: zarinatlupova

src/client/impl/ydb_internal/grpc_connections/grpc_connections.h

@@ -181,6 +181,11 @@ class TGRpcConnectionsImpl
 
                 TCallMeta meta;
                 meta.Timeout = requestSettings.ClientTimeout;
+
+                if (!requestSettings.TraceParent.empty()) {
+                    meta.Aux.emplace_back({"traceparent", requestSettings.TraceParent});
+                }
+
         #ifndef YDB_GRPC_UNSECURE_AUTH
                 meta.CallCredentials = dbState->CallCredentials;
         #else
@@ -415,6 +420,11 @@ class TGRpcConnectionsImpl
 
                 TCallMeta meta;
                 meta.Timeout = requestSettings.ClientTimeout;
+
+                if (!requestSettings.TraceParent.empty()) {
+                    meta.Aux.emplace_back({"traceparent", requestSettings.TraceParent});
+                }
+
 #ifndef YDB_GRPC_UNSECURE_AUTH
                 meta.CallCredentials = dbState->CallCredentials;
 #else
@@ -509,6 +519,11 @@ class TGRpcConnectionsImpl
                 }
 
                 TCallMeta meta;
+
+                if (!requestSettings.TraceParent.empty()) {
+                    meta.Aux.emplace_back({"traceparent", requestSettings.TraceParent});
+                }
+
         #ifndef YDB_GRPC_UNSECURE_AUTH
                 meta.CallCredentials = dbState->CallCredentials;
         #else