nxlog - send input from file to syslog

nxlog.conf

<Extension _syslog>
    Module      xm_syslog
</Extension>

<Input in1>
        Module  im_file
        File    "/tmp/input.txt"
        Exec    $message = $raw_event; $SourceName = file_name();
        Exec    if $SourceName =~ /(\/.*\/)([^\/]*)$/ $SourceName = $2;
        Exec    if $SourceName =~ /(.*\\.*\\)([^\\]*)$/ $SourceName = $2;

</Input>

<Output fileout1>
    Module      om_file
    File        "/tmp/output.txt"
#    Exec       if $Message =~ /error/ $SeverityValue = syslog_severity_value("error");
    Exec        to_syslog_bsd();
</Output>

<Route 1>
    Path        in1 => fileout1
</Route>