+ my @grpc_backends = ();
+ if (defined($remoteglotconf::engine_grpc_backend)) {
+ push @grpc_backends, $remoteglotconf::engine_grpc_backend;
+ }
+ if (defined($remoteglotconf::engine2_grpc_backend)) {
+ push @grpc_backends, $remoteglotconf::engine2_grpc_backend;
+ }
+ $json->{'internal'}{'grpc_backends'} = \@grpc_backends;