import org.opendaylight.controller.northbound.commons.RestMessages;
import org.opendaylight.controller.northbound.commons.exception.ResourceNotFoundException;
import org.opendaylight.controller.northbound.commons.exception.ServiceUnavailableException;
-import org.opendaylight.controller.sal.utils.ServiceHelper;
import org.opendaylight.ovsdb.lib.OvsdbClient;
import org.opendaylight.ovsdb.plugin.api.Connection;
import org.opendaylight.ovsdb.plugin.api.OvsdbConnectionService;
+import org.opendaylight.ovsdb.utils.servicehelper.ServiceHelper;
import org.opendaylight.yang.gen.v1.urn.opendaylight.inventory.rev130819.nodes.Node;
import com.fasterxml.jackson.core.JsonProcessingException;