NAME

Tail::Stat::Plugin - Abstract plugin class

SYNOPSIS

    package Tail::Stat::Plugin::apache;

    use strict;
    use warnings qw(all);

    use base qw(Tail::Stat::Plugin);

    sub regex { qr/^(\d+)\s+(\d+)/ }

    sub process_data {
        my ($self,$lref,$pub,$win) = @_;

        $pub->{param1} += $lref->[0];
        $win->{param2} += $lref->[1];
        $win->{count}++;
    }

    sub process_window {
        my ($self,$pub,$prv,$wins) = @_;

        $pub->{last_param2} = sum ( map { $_->{param2} || 0 } @$wins ) || 0;
    }

METHODS

new

Plugin instance constructor. Usually you don't need to override it's default behavior.

regex

Accessor to main regular expression. Called once during initialization (from constructor).

init_zone($zone,\%public,\%private,\%window)

Called once on zone creating. Usually you can assigns some default values in public statistics.

process_line($line)

Parse single log line and returns array of successfully captured values. Method must returns true value in scalar context, otherwise message will be logged about unprocessed line.

process_data(\@ref,\%public,\%private,\%window)

Receives reference to array of captured values and modify public, private or current window statistics.

process_window(\%public,\%private,\@windows)

Called during closing current window. Common usage is calculate averages from complete windows and save results in public or private statistics.

process_timer($name,\%public,\%private,\@windows)

Processing named timer. Receives timer name and zone statistics. Timer will be renewed unless handler returns false value.

dump_zone($zone,\%public,\%private,\@windows)

Stringify accumulated statistics.

stats_zone($zone,\%public,\%private,\@windows)

Optionally preprocess, and stringify accumulated statistics.

parse_error

Returns default logging level for unparsed lines.

AUTHOR

Oleg A. Mamontov, <oleg@mamontov.net>

COPYRIGHT

This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License.

See http://dev.perl.org/licenses/ for more information.