On Mon, 3 Aug 2015, David Lang wrote:
> On Mon, 3 Aug 2015, Botond Botyanszki wrote:
>
>> Hi,
>>
>> On Fri, 31 Jul 2015 20:02:14 -0700 (PDT)
>> David Lang <da...@lang.hm> wrote:
>>
>>> <Input mark>
>>> ...
>>> Exec set_var('logcount', 5 );
>>> Exec set_var('logcount', ( get_var('logcount') + 1 ) );
>> This is obviously 6.
>>
>>> <Input eventlog>
>>> ..
>>> Exec if size($raw_event) > get_var('maxsize') { set_var('maxsize',
>>> size($raw_event)); }
>> This will never hold true because nxlog uses three-valued logic, so
>> "X > undef" will be always undef.
>
> I tried settig the value to 0 in the mark message, why is it still undef here?
>
>>> Exec $logcount = get_var('logcount');
>>> Exec set_var('logcount', get_var('logcount') +1 );
>> The same stands for addition, undef+1 is undef.
>
> why is this undef after it's been set to '6' for the first time?
>
>> Perhaps this will need to be revisited some day as it seems to trick a
>> lot of people.
after the first mark message is generated, and these three lines are executed
Exec set_var('logcount', 5 );
Exec set_var('logcount', ( get_var('logcount') + 1 ) );
Exec set_var('maxsize', size($raw_event));
why are these two variables undef?
David Lang
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