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Work in progress: Redesign pt-diskstats in Perl.

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Mostly bits and pieces at the moments. ReadKeyMini is a portable-ish
Term::ReadKey. Used here by DiskstatsMenu, which is currently only
for show.

Diskstats has most of the logic of the old pt-diskstats, with parts
now implemented by the DiskstatsGroupBy* classes; The latter subclass
the former.

As mentioned at the start, this is a work in progress. In addition to to
not having all the parts attached, also missing are the data-gathering mode,
the command-line argument parsing, and a large amount of tests.
This commit is contained in:
Brian Fraser
2011-12-08 19:26:04 -03:00
parent bbfaa22615
commit 43b29d6374
24 changed files with 17949 additions and 0 deletions
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68
lib/DiskstatsGroupByAll.pm Normal file
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# This program is copyright 2011 Percona Inc.
# Feedback and improvements are welcome.
#
# THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
# MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, version 2; OR the Perl Artistic License. On UNIX and similar
# systems, you can issue `man perlgpl' or `man perlartistic' to read these
# licenses.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
# Place, Suite 330, Boston, MA 02111-1307 USA.
# ###########################################################################
# DiskstatsGroupByAll package
# ###########################################################################
{
# Package: DiskstatsGroupByAll
#
package DiskstatsGroupByAll;
use warnings;
use strict;
use English qw(-no_match_vars);
use constant MKDEBUG => $ENV{MKDEBUG} || 0;
use base qw( Diskstats );
sub group_by_all {
my ($self, %args) = @_;
$self->clear_state();
$self->parse_from(
ts_callback => sub {
$self->print_deltas(
map { ( $_ => $args{$_} ) } qw( header_cb rest_cb ),
);
},
map( { ($_ => $args{$_}) } qw(filehandle filename data) ),
);
$self->clear_state();
}
sub compute_line_ts {
my ($self, %args) = @_;
return $args{first_ts} > 0
? sprintf("%5.1f", $args{current_ts} - $args{first_ts})
: sprintf("%5.1f", 0);
}
sub delta_against {
my ($self, $dev) = @_;
return $self->previous_stats_for($dev);
}
sub compute_in_progress {
my ($self, $in_progress, $tot_in_progress) = @_;
return $in_progress;
}
1;
}
# ###########################################################################
# End DiskstatsGroupByAll package
# ###########################################################################