> As for delaying creating the file, that can be accomplished just by > specifying createOnDemand=“true”. Keep in mind, that this is not true for parent folders. Parent folders will be created on initialization even before createOnDemand. (At least for RollingFileAppenders)
This was my workaround for that issue: A RoutingAppender wrapping the RollingFileAppender and routing all logging to null until the value is not empty anymore. <Routing name="parent-folder-route"> <Routes pattern="$${ctx:parent.folder}"> <Route key="$${ctx:parent.folder}"> <Null name="dontlog"/> </Route> <Route> <RollingFile name="logger" fileName="${ctx: parent.folder}/Logging.log" filePattern="${ctx: parent.folder}/Logging.log.%i" createOnDemand="true"> ... </RollingFile> </Route> </Routes> </Routing>