Class SocketWriter

spell-framework/src/configure.rs:489–492

        .expect("Non blocking couldn't be set");

    let writer = RollingFileAppender::builder()
        .rotation(Rotation::HOURLY) // rotate log files once every hour
        .filename_prefix(widget_name) // log file names will be prefixed with `myapp.`
        .filename_suffix("log") // log file names will be suffixed with `.log`
        .build(&logging_dir) // try to build an appender that stores log files in `/var/log`
        .expect("initializing rolling file appender failed");