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# vim: set et ts=4 sw=4:
package ManaTools::Shared::disk_backend::IOs;
#============================================================= -*-perl-*-
=head1 NAME
ManaTools::Shared::disk_backend::IOs - list of IOs
=head1 SYNOPSIS
use ManaTools::Shared::disk_backend::IOs;
my $db_man = ManaTools::Shared::disk_backend::IOs->new(parent => $self, restriction => $restriction);
$db_man->append($io);
$db_man->remove($io);
$db_man->list();
$db_man->length();
=head1 DESCRIPTION
This plugin is an collection of IOs in the backend to manadisk
=head1 SUPPORT
You can find documentation for this plugin with the perldoc command:
perldoc ManaTools::Shared::disk_backend::IOs
=head1 AUTHOR
Maarten Vanraes <alien@rmail.be>
=head1 COPYRIGHT and LICENSE
Copyright (c) 2015 Maarten Vanraes <alien@rmail.be>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2, as
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
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.
=head1 METHODS
=cut
use Moose;
has 'parent' => (
is => 'ro',
isa => 'ManaTools::Shared::disk_backend::Part',
required => 1
);
has 'restriction' => (
traits => ['Code'],
is => 'ro',
isa => 'CodeRef',
required => 1,
handles => {
check => 'execute'
}
);
has 'ios' => (
is => 'ro',
isa => 'HashRef[ManaTools::Shared::disk_backend::IO]',
default => sub {return {};}
);
#=============================================================
=head2 length
=head3 OUTPUT
Int
=head3 DESCRIPTION
this method returns the number of IOs
=cut
#=============================================================
sub length {
my $self = shift;
return scalar(keys %{$self->ios});
}
#=============================================================
=head2 list
=head3 OUTPUT
array of the IOs
=head3 DESCRIPTION
this method returns a list of IOs
=cut
#=============================================================
sub list {
my $self = shift;
return values %{$self->ios};
}
#=============================================================
=head2 is_equal
=head3 INPUT
$ios: ManaTools::Shared::disk_backend::IOs
=head3 OUTPUT
bool
=head3 DESCRIPTION
this method returns true of $self is equal to $ios
=cut
#=============================================================
sub is_equal {
my $self = shift;
my $ios = shift;
return 0 if $self->length() != $ios->length();
for my $key (keys %{$self->ios()}) {
return 0 if $ios->ios()->{$key} != $self->ios()->{$key};
}
return 1;
}
#=============================================================
=head2 append
=head3 INPUT
$io: IO to add
=head3 OUTPUT
1 if success, 0 otherwise
=head3 DESCRIPTION
this method appends an IO
=cut
#=============================================================
sub append {
my $self = shift;
my $io = shift;
# check IO with restriction
if (defined $self->restriction) {
if (!$self->check($self->parent(), $io)) {
return 0;
}
}
$self->ios->{$io->id} = $io;
}
#=============================================================
=head2 remove
=head3 INPUT
$io: IO to remove
=head3 OUTPUT
1 if success, 0 otherwise
=head3 DESCRIPTION
this method removes an IO
=cut
#=============================================================
sub remove {
my $self = shift;
my $io = shift;
# check IO with restriction
if (defined $self->restriction) {
if (!$self->check($self->parent(), $io, 1)) {
return 0;
}
}
# remove the io
delete $self->ios->{$io->id};
}
1;
|
