# Copyright (c) 2006, 2007 - OpenSLX GmbH
#
# This program is free software distributed under the GPL version 2.
# See http://openslx.org/COPYING
#
# If you have any feedback please consult http://openslx.org/feedback and
# send your suggestions, praise, or complaints to feedback@openslx.org
#
# General information about OpenSLX can be found at http://openslx.org/
# -----------------------------------------------------------------------------
# Engine.pm
# - provides driver engine for the OSExport API.
# -----------------------------------------------------------------------------
package OpenSLX::OSExport::Engine;
use vars qw(@ISA @EXPORT $VERSION);
$VERSION = 1.01; # API-version . implementation-version
use Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(
%supportedExportTypes %supportedDistros
);
use strict;
use Carp;
use File::Basename;
use OpenSLX::Basics;
use OpenSLX::Utils;
use vars qw(%supportedExportTypes %supportedDistros);
%supportedExportTypes = (
'nfs'
=> { module => 'NFS' },
'nbd'
=> { module => 'NBD_Squash' },
);
%supportedDistros = (
'<any>'
=> { module => 'Any' },
'debian'
=> { module => 'Debian' },
'fedora'
=> { module => 'Fedora' },
'gentoo'
=> { module => 'Gentoo' },
'suse'
=> { module => 'SUSE' },
'ubuntu'
=> { module => 'Ubuntu' },
);
################################################################################
### interface methods
################################################################################
sub new
{
my $class = shift;
my $self = {
};
return bless $self, $class;
}
sub initializeFromExisting
{
my $self = shift;
my $exportName = shift;
my $openslxDB = instantiateClass("OpenSLX::ConfigDB");
$openslxDB->connect();
my $export
= $openslxDB->fetchExportByFilter({'name' => $exportName});
if (!defined $export) {
die _tr("Export '%s' not found in DB, giving up!", $exportName);
}
my $vendorOS
= $openslxDB->fetchVendorOSByFilter({ 'id' => $export->{vendor_os_id} });
$openslxDB->disconnect();
$self->_initialize($vendorOS->{name}, $vendorOS->{id},
$export->{name}, $export->{type});
}
sub initializeForNew
{
my $self = shift;
my $vendorOSName = shift;
my $exportType = lc(shift);
my $openslxDB = instantiateClass("OpenSLX::ConfigDB");
$openslxDB->connect();
my $vendorOS
= $openslxDB->fetchVendorOSByFilter({ 'name' => $vendorOSName });
if (!defined $vendorOS) {
die _tr("vendor-OS '%s' not found in DB, giving up!", $vendorOSName);
}
my $exportName = "$vendorOSName-$exportType";
$openslxDB->disconnect();
$self->_initialize($vendorOS->{name}, $vendorOS->{id},
$exportName, $exportType);
}
sub exportVendorOS
{
my $self = shift;
if (!$self->{'exporter'}->checkRequirements($self->{'vendor-os-path'})) {
die _tr("clients wouldn't be able to access the exported root-fs!\nplease install the missing module(s) or use another export-type.");
}
$self->{'exporter'}->exportVendorOS(
$self->{'vendor-os-path'},
$self->{'export-path'}
);
vlog 0, _tr("vendor-OS '%s' successfully exported to '%s'!",
$self->{'vendor-os-path'}, $self->{'export-path'});
$self->addExportToConfigDB();
}
sub purgeExport
{
my $self = shift;
if ($self->{'exporter'}->purgeExport($self->{'export-path'})) {
vlog 0, _tr("export '%s' successfully removed!",
$self->{'export-path'});
}
$self->removeExportFromConfigDB();
}
sub generateExportURI
{
my $self = shift;
return $self->{exporter}->generateExportURI(@_);
}
sub requiredFSMods
{
my $self = shift;
return $self->{exporter}->requiredFSMods();
}
################################################################################
### implementation methods
################################################################################
sub _initialize
{
my $self = shift;
my $vendorOSName = shift;
my $vendorOSId = shift;
my $exportName = shift;
my $exportType = lc(shift);
if (!exists $supportedExportTypes{lc($exportType)}) {
print _tr("Sorry, export type '%s' is unsupported.\n", $exportType);
print _tr("List of supported export types:\n\t");
print join("\n\t", sort keys %supportedExportTypes)."\n";
exit 1;
}
$self->{'vendor-os-name'} = $vendorOSName;
$self->{'vendor-os-id'} = $vendorOSId;
$self->{'export-name'} = $exportName;
$self->{'export-type'} = $exportType;
$vendorOSName =~ m[^(.+?\-[^-]+)];
my $distroName = $1;
$self->{'distro-name'} = $distroName;
# load module for the requested distro:
if (!exists $supportedDistros{lc($distroName)}) {
# try without _x86_64:
$distroName =~ s[_x86_64$][];
if (!exists $supportedDistros{lc($distroName)}) {
# try basic distro-type (e.g. debian or suse):
$distroName =~ s[-.+$][];
if (!exists $supportedDistros{lc($distroName)}) {
# fallback to generic implementation:
$distroName = '<any>';
}
}
}
my $distroModuleName = $supportedDistros{lc($distroName)}->{module};
my $distro
= instantiateClass("OpenSLX::OSExport::Distro::$distroModuleName");
$distro->initialize($self);
$self->{distro} = $distro;
# load module for the requested export type:
my $typeModuleName = $supportedExportTypes{lc($exportType)}->{module};
my $exporter
= instantiateClass("OpenSLX::OSExport::ExportType::$typeModuleName");
$exporter->initialize($self);
$self->{'exporter'} = $exporter;
# setup source and target paths:
$self->{'vendor-os-path'}
= "$openslxConfig{'private-path'}/stage1/$vendorOSName";
my $exportBasePath = "$openslxConfig{'public-path'}/export";
$self->{'export-path'} = "$exportBasePath/$exportType/$vendorOSName";
vlog 1, _tr("vendor-OS from '%s' will be exported to '%s'",
$self->{'vendor-os-path'}, $self->{'export-path'});
}
sub addExportToConfigDB
{
my $self = shift;
my $openslxDB = instantiateClass("OpenSLX::ConfigDB");
$openslxDB->connect();
my $export
= $openslxDB->fetchExportByFilter({
'name' => $self->{'export-name'},
'vendor_os_id' => $self->{'vendor-os-id'},
});
if (defined $export) {
vlog 0, _tr("No need to change export '%s' in OpenSLX-database.\n",
$self->{'export-name'});
$self->{exporter}->showExportConfigInfo($export);
} else {
$export = {
'vendor_os_id' => $self->{'vendor-os-id'},
'name' => $self->{'export-name'},
'type' => $self->{'export-type'},
};
my $id = $self->{exporter}->addExportToConfigDB($export, $openslxDB);
vlog 0, _tr("Export '%s' has been added to DB (ID=%s)...\n",
$self->{'export-name'}, $id);
$self->{exporter}->showExportConfigInfo($export) if $id;
# now create a default system for that export, using the standard kernel:
system("slxconfig add-system $self->{'export-name'}");
}
$openslxDB->disconnect();
}
sub removeExportFromConfigDB
{
my $self = shift;
my $openslxDB = instantiateClass("OpenSLX::ConfigDB");
$openslxDB->connect();
# remove export from DB:
my $exportName = $self->{'export-name'};
my $export
= $openslxDB->fetchExportByFilter({
'name' => $exportName,
});
if (!defined $export) {
vlog 0, _tr("Export '%s' doesn't exist in OpenSLX-database.\n",
$exportName);
} else {
# remove all systems using this export and then remove the
# export itself:
my @systemIDs
= map { $_->{id} }
$openslxDB->fetchSystemByFilter(
{ 'export_id' => $export->{id} }, 'id'
);
vlog 1, _tr("removing systems '%s' from DB, since they belong to the export being deleted.\n",
join ',', @systemIDs);
$openslxDB->removeSystem(\@systemIDs);
$openslxDB->removeExport($export->{id});
vlog 0, _tr("Export '%s' has been removed from DB.\n", $exportName);
}
$openslxDB->disconnect();
}
1;
################################################################################
=pod
=head1 NAME
OpenSLX::OSExport::Engine -
=head1 SYNOPSIS
=head1 DESCRIPTION
...
=cut