[pve-devel] [PATCH guest-common v2 1/1] add profiles section config plugin

[Dominik Csapak]

this is intended to house custom profiles which can be used
on guest creation instead of manually needing to specify every option.

we do special things here:
* we always set 'allow_unknown' to 1, because when using the guest
  specific parts in the cli, we cannot depend on the other one, else
  we'd get a cyclic dependency, and without that we need to ignore
  unknown sections

* we pack the type and id in the global options, so that when using
  it with a seperated section config they get included in the
  create/updateSchema

Signed-off-by: Dominik Csapak <d.csapak at proxmox.com>
---
 src/Makefile               |  2 ++
 src/PVE/Profiles/Plugin.pm | 74 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 76 insertions(+)
 create mode 100644 src/PVE/Profiles/Plugin.pm

diff --git a/src/Makefile b/src/Makefile
index cbc40c1..d99645c 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -17,6 +17,8 @@ install: PVE
 	install -d ${PERL5DIR}/PVE/Mapping
 	install -m 0644 PVE/Mapping/PCI.pm ${PERL5DIR}/PVE/Mapping/
 	install -m 0644 PVE/Mapping/USB.pm ${PERL5DIR}/PVE/Mapping/
+	install -d ${PERL5DIR}/PVE/Profiles
+	install -m 0644 PVE/Profiles/Plugin.pm ${PERL5DIR}/PVE/Profiles/
 	install -d ${PERL5DIR}/PVE/VZDump
 	install -m 0644 PVE/VZDump/Plugin.pm ${PERL5DIR}/PVE/VZDump/
 	install -m 0644 PVE/VZDump/Common.pm ${PERL5DIR}/PVE/VZDump/
diff --git a/src/PVE/Profiles/Plugin.pm b/src/PVE/Profiles/Plugin.pm
new file mode 100644
index 0000000..6ea2b5f
--- /dev/null
+++ b/src/PVE/Profiles/Plugin.pm
@@ -0,0 +1,74 @@
+package PVE::Profiles::Plugin;
+
+use strict;
+use warnings;
+
+use PVE::Cluster qw(cfs_register_file);
+use PVE::SectionConfig;
+
+use base qw(PVE::SectionConfig);
+
+my $CFG_PATH = 'virtual-guest/profiles.cfg';
+
+cfs_register_file ($CFG_PATH,
+		   sub { __PACKAGE__->parse_config(@_); },
+		   sub { __PACKAGE__->write_config(@_); });
+
+my $defaultData = {
+    propertyList => {
+	type => { description => 'Profile type.' },
+	id => {
+	    type => 'string',
+	    description => "The ID of the profile.",
+	    format => 'pve-configid',
+	},
+	'profile-description' => {
+	    description => "Description.",
+	    type => 'string',
+	    optional => 1,
+	    maxLength => 4096,
+	},
+    },
+    options => {
+	type => {},
+	id => {},
+	'profile-description' => { optional => 1 },
+    },
+};
+
+sub private {
+    return $defaultData;
+}
+
+sub parse_config {
+    my ($class, $filename, $raw, $allow_unknown) = @_;
+
+    # always allow unknown, so that qemu-server/pct-container
+    # can parse the file without loading the other plugin type
+    return $class->SUPER::parse_config($filename, $raw, 1);
+}
+
+sub write_config {
+    my ($class, $filename, $cfg, $allow_unknown) = @_;
+
+    return $class->SUPER::write_config($filename, $cfg, 1);
+}
+
+# gets, checks and prepares the guest config
+# throws an error if it does not exist or the type is wrong
+sub get_guest_ready_config {
+    my ($id, $type) = @_;
+
+    my $cfg = PVE::Cluster::cfs_read_file($CFG_PATH);
+
+    my $profile = $cfg->{ids}->{$id};
+    die "no such profile '$id'\n" if !defined $profile;
+    die "wrong type '$profile->{type}'\n" if $profile->{type} ne $type;
+
+    delete $profile->{type};
+    delete $profile->{'profile-description'};
+
+    return $profile;
+}
+
+1;
-- 
2.30.2