hi Jaren,
as I understand from your rule example, you would like to modify the
same input file from sec which is also monitored by sec? If so, I
wouldn't recommend it.
Firstly, sec is not only monitoring the content of the file but also
its attributes, in order to detect situations when file is rotated or
emptied (ie, its size is truncated to 0 bytes). Size truncations are
monitored in the following way -- if the file i-node number has not
changed, but the file size has decreased, sec regards the file size
being truncated and starts processing it from the very beginning.
Removing one or more lines from the input file decreases its size and
will therefore be detected by sec as a file truncation. Re-processing
the file from the very beginning is not something you would like to
happen under normal circumstances.
Secondly, apparently sec input files are produced by some other
process which is continuously appending new data to these files. If
you start modifying these input files by sec, the files have now two
processes which are altering their content simultaneously. This can
lead to unpredictable results and bytes from both writing operations
can become badly mixed. For example, if one process writes the line
"AAA" and the other process writes the line "BBB" to the file, the end
result could look like
ABBB
AA
which is probably not what you want.
So I would strongly recommend to avoid this kind of setup.
kind regards,
risto
2016-11-30 15:52 GMT+02:00 Jaren Peich <burkol...@gmail.com>:
> Hi,
>
> I want to erase a log file while it is parsing it with sec. The problem that
> i got it is time procedures.
>
> A line enter to the rule(input) and it is erased from file.At the same time
> another lines comes from the input to the rule and these lines are not
> erased because the rule is still processing the previous line.
>
> Is it possible to save the line that it is processing and the following or 2
> next lines that sec is going to proccess for being erased later?
>
> _____________________________________________________________________________
>
> ptype = RegExp
> continue = Takenext
> pattern = (.*)
> desc=-
> action = eval %ret ( \
> my($filename)='$+{_inputsrc}';\
> my($bus)='$0';\
> my($idx) =0;\
> if($filename !~ m/synthetic/i)\
> {\
> open my $handle, '<', $filename;chomp(my @lines = <$handle>);close $handle;\
> $idx = List::Util::first { $lines[$_] eq $bus } 0..$#lines;\
> splice @lines, $idx, 1;\
> open my $handle, '>', $filename;\
> print $handle join ("\n", @lines);\
> close $handle;\
> }\
> );
> _______________________________________________________________________________
>
> Thank you!. Regards.
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