How do I pipe Apache to my script then to cronolog?

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Hi, This feels more like an apache question than a perl question but have run out of ideas, so I thought I would try.

I have a simple filter script that I would like to use to filter out the apache error logging into my script and then into the cronolog script.

However, I only get the apache 'resuming normal operations' and then nothing ever again. I thought it might be buffering so I tried making STDOUT hot, but no luck.

Here is the code:

#!/usr/bin/perl -T                

use strict;
use warnings;

$|++; 

my $line = shift( @ARGV );

unless( defined( $line ) ){
        $line = <STDIN>;
}
select STDOUT;
$|=1;
print STDOUT "$line\n" if( defined( $line ) && $line !~ m/favicon/ig )
+;

exit(0);
[download]

In the http.conf for the error log it used to be "|cronolog ..." and now its "|myscript.pl|cronolog ...". Any suggestions would be greatly appreciated.

Comment on How do I pipe Apache to my script then to cronolog? Download Code

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Re: How do I pipe Apache to my script then to cronolog? by kwaping (Priest) on Sep 25, 2006 at 21:33 UTC
It seems to me that your program is doing exactly what you're telling it to. It reads a line of STDIN and prints it to STDOUT, then exits. You might want to try something along these lines: `while (<STDIN>) { print STDOUT "The next line is: $_\n"; }` [download] A minor note, I think your `select` and `exit` are superfluous. For that matter, so is the STDOUT in `print STDOUT`. Also, explore Apache's Conditional Logging capability. --- It's all fine and dandy until someone has to look at the code.	[reply] [d/l] [select]
Re^2: How do I pipe Apache to my script then to cronolog? by Anonymous Monk on Sep 25, 2006 at 21:43 UTC
Thanks, I figured it was called each time, I didn't know it needed a loop. I looked around apache site and couldn't find examples and docs. Yeah, I was getting desperate and put in the select and exit. Excellent. I asked my local sysadmin guru and he said you couldn't do that with apache, so I figured I had to go with a filter. I just want to stop logging all those stupid favicon requests (nothing against favicons, but the site is a wiki and the browsers look in several locations, not just toplevel dir). Thanks for the info.	[reply]
Re: How do I pipe Apache to my script then to cronolog? by shmem (Chancellor) on Sep 25, 2006 at 21:38 UTC
Without looking up the pipe facility for apache logging - I'd just replace 'cronolog' with 'myscript.pl' in the apache config, and let my script dispatch to cronolog (whatever that is :-) - `open(STDOUT,"\| cronolog") or die "Can't run cronolog: $!\n";` [download] and make shure a) apache finds the script (i.e. it's in it's $PATH), b) it is executable by the efective UID of apache. That way I'd avoid requesting from apache to be able to parse and behave like a shell. --shmem _($_=" "x(1<<5)."?\n".q·/)Oo. G°\ / /\_¯/(q / ---------------------------- \__(m.====·.(_("always off the crowd"))."· ");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}	[reply] [d/l]