mirror of
https://github.com/percona/percona-toolkit.git
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106 lines
3.4 KiB
Perl
106 lines
3.4 KiB
Perl
# This program is copyright 2011 Percona Inc.
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# Feedback and improvements are welcome.
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#
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# THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
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# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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# MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation, version 2; OR the Perl Artistic License. On UNIX and similar
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# systems, you can issue `man perlgpl' or `man perlartistic' to read these
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# licenses.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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# Place, Suite 330, Boston, MA 02111-1307 USA.
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# ###########################################################################
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# DiskstatsGroupByAll package
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# ###########################################################################
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{
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# Package: DiskstatsGroupByAll
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#
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package DiskstatsGroupByAll;
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use warnings;
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use strict;
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use English qw(-no_match_vars);
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use constant MKDEBUG => $ENV{MKDEBUG} || 0;
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use base qw( Diskstats );
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sub group_by {
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my ($self, %args) = @_;
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$self->clear_state();
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if (!$self->interactive()) {
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$self->parse_from(
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filehandle => $args{filehandle},
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filename => $args{filename},
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data => $args{data},
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sample_callback => sub {
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$self->print_deltas(
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header_callback => $args{header_callback},
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rows_callback => $args{rows_callback},
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);
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},
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);
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}
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else {
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my $orig = tell $args{filehandle} if $args{filehandle};
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my $header_callback = $args{header_callback} || sub {
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my ($self, @args) = @_;
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$self->print_header(@args) if $self->{_print_header};
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$self->{_print_header} = 0;
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};
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$self->parse_from(
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filehandle => $args{filehandle},
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filename => $args{filename},
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data => $args{data},
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sample_callback => sub {
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$self->print_deltas(
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header_callback => $header_callback,
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rows_callback => $args{rows_callback},
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);
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},
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);
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seek $args{filehandle}, $orig, 0 unless $self->prev_ts();
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}
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return;
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}
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# The next methods are all overrides!
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sub delta_against {
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my ($self, $dev) = @_;
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return $self->prev_stats_for($dev);
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}
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sub delta_against_ts {
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my ($self) = @_;
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return $self->prev_ts();
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}
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sub compute_line_ts {
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my ($self, %args) = @_;
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if ( $self->interactive() ) {
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# In interactive mode, we always compare against the previous sample,
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# but the default is to compare against the first.
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# This is generally a non-issue, because it can only happen
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# when there are more than two samples left to parse in the file,
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# which can only happen when someone sets a redisplay or sampling
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# interval (or both) too high.
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$args{first_ts} = $self->prev_ts();
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}
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return $self->SUPER::compute_line_ts(%args);
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}
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1;
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}
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# ###########################################################################
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# End DiskstatsGroupByAll package
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# ###########################################################################
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