# mt-aws-glacier - Amazon Glacier sync client
# Copyright (C) 2012-2013 Victor Efimov
# http://mt-aws.com (also http://vs-dev.com) vs@vs-dev.com
# License: GPLv3
#
# This file is part of "mt-aws-glacier"
#
# mt-aws-glacier 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, either version 3 of the License, or
# (at your option) any later version.
#
# mt-aws-glacier 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, see <http://www.gnu.org/licenses/>.
package App::MtAws::Job::SegmentDownload;
our $VERSION = '1.058';
use strict;
use warnings;
use utf8;
use base qw/App::MtAws::Job/;
use App::MtAws::Utils;
use App::MtAws::IntermediateFile;
use Carp;
sub new
{
my ($class, %args) = @_;
my $self = \%args;
bless $self, $class;
$self->{archive}||die;
$self->{pending}={};
$self->{all_raised} = 0;
$self->{position} = 0;
$self->{tempfile} = undef;
return $self;
}
# returns "ok" "wait" "ok subtask"
sub get_task
{
my ($self) = @_;
if ($self->{all_raised}) {
return ("wait");
} else {
my $end_position = $self->{archive}{size} - 1;
if ($self->{position} <= $end_position) {
my $download_size = $end_position - $self->{position} + 1;
my $segment_size = $self->{file_downloads}{'segment-size'}*1048576 or confess;
$download_size = $segment_size if $download_size > $segment_size;
my $archive = $self->{archive};
$self->{i_tmp} = App::MtAws::IntermediateFile->new(target_file => $archive->{filename}, mtime => $archive->{mtime})
unless defined($self->{i_tmp});
my $task = App::MtAws::Task->new(id => $self->{position}, action=>"segment_download_job", data => {
archive_id => $archive->{archive_id}, relfilename => $archive->{relfilename},
filename => $archive->{filename}, jobid => $archive->{jobid},
position => $self->{position}, download_size => $download_size, tempfile => $self->{i_tmp}->tempfilename
});
$self->{position} += $download_size;
$self->{uploadparts} ||= {};
$self->{uploadparts}->{$task->{id}} = 1;
confess unless $task;
$self->{all_raised} = 1 if $self->{position} == $end_position + 1;
return ("ok", $task);
} elsif ($self->{position} == $end_position + 1) {
confess "Unexpected: zero-size archive" unless ($self->{position});
$self->{all_raised} = 1;
if (scalar keys %{$self->{uploadparts}} == 0) {
# TODO: why do we have to have two do_finish()?
return $self->do_finish();
} else {
return ("wait");
}
} else {
confess "$self->{position} != ".($end_position+1);
}
}
}
# returns "ok" "ok replace" "done"
sub finish_task
{
my ($self, $task) = @_;
# write taks->attachment to position position
delete $self->{uploadparts}->{$task->{id}};
if ($self->{all_raised} && scalar keys %{$self->{uploadparts}} == 0) {
return $self->do_finish();
} else {
return ("ok");
}
}
sub do_finish
{
my ($self) = @_;
confess unless defined($self->{i_tmp});
$self->{i_tmp}->make_permanent;
undef $self->{i_tmp};
return ("done");
}
1;