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# -*- perl -*-
#
# Copyright (C) 2011 Red Hat, Inc.
# Copyright (C) 2011 Daniel P. Berrange
#
# This program is free software; You can redistribute it and/or modify
# it under the GNU General Public License as published by the Free
# Software Foundation; either version 2, or (at your option) any
# later version
#
# The file "LICENSE" distributed along with this file provides full
# details of the terms and conditions
#
=pod
=head1 NAME
storage/400-vol-download.pl - storage volume download
=head1 DESCRIPTION
The test case validates that it is possible to download storage
volumes using blocking virStreamRecv API calls.
=cut
use strict;
use warnings;
use Test::More tests => 24;
use Digest;
use File::Spec::Functions qw(catfile);
use Sys::Virt::TCK;
use Test::Exception;
use File::stat;
use Fcntl qw(SEEK_SET);
Sys::Virt::Event::register_default();
my $tck = Sys::Virt::TCK->new();
my $conn = eval { $tck->setup(); };
BAIL_OUT "failed to setup test harness: $@" if $@;
END {
$tck->cleanup if $tck;
}
my $xml = $tck->generic_pool("dir")->as_xml;
diag "Defining transient storage pool";
my $pool;
ok_pool(sub { $pool = $conn->define_storage_pool($xml) }, "define transient storage pool");
lives_ok(sub { $pool->build(0) }, "built storage pool");
lives_ok(sub { $pool->create }, "started storage pool");
my $volxml = $tck->generic_volume("tck", "raw", 1024*1024*2)->allocation(1024*1024*2)->as_xml;
my $vol;
ok_volume(sub { $vol = $pool->create_volume($volxml) }, "create raw volume");
my $path = xpath($vol, "string(/volume/target/path)");
my $oldfile = catfile($tck->bucket_dir("vol-stream"), "local.img");
unlink $oldfile;
open FILE, ">$oldfile"
or die "cannot create $oldfile: $!";
for (my $j = 0 ; $j < 1024 ; $j++) {
# 64 bytes
my $str = join('', ('a'..'z', 'A'..'Z', '0'..'9', '.',"\n"));
# 1 kb
my $data = join('', $str, $str, $str, $str,
$str, $str, $str, $str,
$str, $str, $str, $str,
$str, $str, $str, $str);
print FILE $data;
}
close FILE or die "cannot save $oldfile: $!";
my $olddigest = &digest($oldfile, 0, 0);
my $quit = 0;
my $quitref = \$quit;
my $nextdata;
my $nextdatalen = 0;
&onetest(0, 0);
&onetest(0, 1024*1024);
&onetest(1024*1024, 0);
&onetest(1024*1024, 1024*1024);
sub onetest {
my $offset = shift;
my $length = shift;
my $origdigestpre = $offset ? &digest($path, 0, $offset) : "";
my $origdigestpost = &digest($path, $offset + 1024*1024, 0);
my $st = $conn->new_stream(Sys::Virt::Stream::NONBLOCK);
open FILE, "<$oldfile" or die "cannot read $oldfile: $!";
$nextdatalen = 0;
sub streamevent {
my $st = shift;
my $events = shift;
if ($events & (Sys::Virt::Stream::EVENT_HANGUP |
Sys::Virt::Stream::EVENT_ERROR)) {
$quit = 1;
return;
}
if (!$nextdatalen) {
$nextdatalen = sysread FILE, $nextdata, 65536
}
if ($nextdatalen == 0) {
$quit = 1;
$st->remove_callback();
return;
}
my $rv = $st->send($nextdata, $nextdatalen);
if ($rv > 0) {
$nextdata = substr $nextdata, $rv;
$nextdatalen -= $rv;
}
}
lives_ok(sub { $vol->upload($st, $offset, $length) }, "started upload");
$st->add_callback(Sys::Virt::Stream::EVENT_WRITABLE, \&streamevent);
${$quitref} = 0;
alarm 15;
while (!${$quitref}) {
Sys::Virt::Event::run_default();
}
alarm 0;
lives_ok(sub { $st->finish(); }, "finished stream");
close FILE or die "cannot close $oldfile: $!";
my $newdigest = &digest($path, $offset, 1024*1024);
my $newdigestpre = $offset ? &digest($path, 0, $offset) : "";
my $newdigestpost = &digest($path, $offset + 1024*1024, 0);
is($origdigestpre, $newdigestpre, "File pre region digest matches");
is($olddigest, $newdigest, "File digests match");
is($origdigestpost, $newdigestpost, "File post region digest matches");
}
sub digest {
my $file = shift;
my $offset = shift;
my $length = shift;
open FILE, "<$file" or die "cannot open $file: $!";
my $digest = Digest->new("MD5");
my $done = 0;
seek FILE, $offset, SEEK_SET;
while (1) {
my $want = 1024;
if ($length && (($length - $done) < $want)) {
$want = ($length - $done);
}
my $str;
my $got = sysread FILE, $str, $want;
last if $got == 0;
$done += $got;
$digest->add($str);
}
close FILE;
return $digest->hexdigest;
}
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