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From: Philipp Hufnagl <p.hufnagl@proxmox.com>
To: pve-devel@lists.proxmox.com
Date: Mon, 14 Aug 2023 16:42:17 +0200
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Subject: [pve-devel] [PATCH storage v6 1/1] fix #4849: download-url: allow
download and decompression of compressed ISOs
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adds information for how to decompress isos.
generates the compressor regex from a list of comression formats (to
avoid redundancy)
extends the download_url wtih the functionality to handley compression
for images
Signed-off-by: Philipp Hufnagl <p.hufnagl@proxmox.com>
---
src/PVE/API2/Storage/Status.pm | 14 +++++++++++++-
src/PVE/Storage.pm | 6 ++++++
src/PVE/Storage/Plugin.pm | 3 ++-
3 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/src/PVE/API2/Storage/Status.pm b/src/PVE/API2/Storage/Status.pm
index 2aaeff6..7875530 100644
--- a/src/PVE/API2/Storage/Status.pm
+++ b/src/PVE/API2/Storage/Status.pm
@@ -578,6 +578,12 @@ __PACKAGE__->register_method({
requires => 'checksum-algorithm',
optional => 1,
},
+ compression => {
+ description => "Decompress the downloaded file using specified compression algorithm",
+ type => 'string',
+ enum => $PVE::Storage::Plugin::KNOWN_COMPRESSION_FORMATS,
+ optional => 1,
+ },
'checksum-algorithm' => {
description => "The algorithm to calculate the checksum of the file.",
type => 'string',
@@ -604,7 +610,7 @@ __PACKAGE__->register_method({
my $cfg = PVE::Storage::config();
- my ($node, $storage) = $param->@{'node', 'storage'};
+ my ($node, $storage, $compression) = $param->@{'node', 'storage','compression'};
my $scfg = PVE::Storage::storage_check_enabled($cfg, $storage, $node);
die "can't upload to storage type '$scfg->{type}', not a file based storage!\n"
@@ -649,6 +655,12 @@ __PACKAGE__->register_method({
}
my $worker = sub {
+ if ($compression) {
+ die "decompression not supported for $content\n" if $content ne 'iso';
+ my $info = PVE::Storage::decompressor_info('iso', $compression);
+ die "no decompression method found\n" if (! $info->{decompressor});
+ $opts->{decompression_command} = $info->{decompressor};
+ }
PVE::Tools::download_file_from_url("$path/$filename", $url, $opts);
};
diff --git a/src/PVE/Storage.pm b/src/PVE/Storage.pm
index a4d85e1..cb70113 100755
--- a/src/PVE/Storage.pm
+++ b/src/PVE/Storage.pm
@@ -1531,6 +1531,12 @@ sub decompressor_info {
lzo => ['lzop', '-d', '-c'],
zst => ['zstd', '-q', '-d', '-c'],
},
+ iso => {
+ # zstd seem to be able to handle .gzip fine. Therefore we dont need additional other tool
+ gz => ['zcat'],
+ lzo => ['lzop', '-d', '-c'],
+ zst => ['zstd', '-q', '-d', '-c'],
+ },
};
die "ERROR: archive format not defined\n"
diff --git a/src/PVE/Storage/Plugin.pm b/src/PVE/Storage/Plugin.pm
index 74d1987..71fcff0 100644
--- a/src/PVE/Storage/Plugin.pm
+++ b/src/PVE/Storage/Plugin.pm
@@ -19,7 +19,8 @@ use JSON;
use base qw(PVE::SectionConfig);
-use constant COMPRESSOR_RE => 'gz|lzo|zst';
+use constant KNOWN_COMPRESSION_FORMATS => ( 'gz', 'lzo', 'zst');
+use constant COMPRESSOR_RE => join( '|', KNOWN_COMPRESSION_FORMATS);
use constant LOG_EXT => ".log";
use constant NOTES_EXT => ".notes";
--
2.39.2