action to be completed after close of current active log file and before next rollover attempt , may be executed asynchronously . concode_field_sep String activeFileName concode_elem_sep Action synchronous concode_elem_sep Action asynchronous concode_elem_sep boolean append concode_field_sep String getActiveFileName concode_elem_sep Action getSynchronous concode_elem_sep boolean getAppend
Action function ( ) { return asynchronous ; }