#!/usr/bin/perl
#Copyright (c) 2009  Eucalyptus Systems, Inc.	
#
#This program 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, only version 3 of the License.  
# 
#This file 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/>.
# 
#Please contact Eucalyptus Systems, Inc., 130 Castilian
#Dr., Goleta, CA 93101 USA or visit <http://www.eucalyptus.com/licenses/> 
#if you need additional information or have any questions.
#
#This file may incorporate work covered under the following copyright and
#permission notice:
#
#  Software License Agreement (BSD License)
#
#  Copyright (c) 2008, Regents of the University of California
#  
#
#  Redistribution and use of this software in source and binary forms, with
#  or without modification, are permitted provided that the following
#  conditions are met:
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#    Redistributions of source code must retain the above copyright notice,
#    this list of conditions and the following disclaimer.
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#    Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
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#  IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
#  TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
#  PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
#  OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
#  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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#  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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#  THIS SOFTWARE ACKNOWLEDGE THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE
#  LICENSED MATERIAL, COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS
#  SOFTWARE, AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING
#  IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA, SANTA
#  BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY, WHICH IN
#  THE REGENTS’ DISCRETION MAY INCLUDE, WITHOUT LIMITATION, REPLACEMENT
#  OF THE CODE SO IDENTIFIED, LICENSING OF THE CODE SO IDENTIFIED, OR
#  WITHDRAWAL OF THE CODE CAPABILITY TO THE EXTENT NEEDED TO COMPLY WITH
#  ANY SUCH LICENSES OR RIGHTS.
#

#
# this generates an XML template for libvirt domain specification,
# which is tailored to an instance by the node controller

use diagnostics;
use warnings; 
use sigtrap;
use strict;
use English; # for descriptive predefined var names
use Data::Dumper; # for debugging: print Dumper($var)
use Getopt::Long;
use FindBin;
$OUTPUT_AUTOFLUSH = 1; # no output buffering

our $use_ramdisk = 0;
our $use_ephemeral = 0;

# deal with command-line parameters
GetOptions('ramdisk'        => sub { $use_ramdisk = 1; },
           'ephemeral'      => sub { $use_ephemeral = 1; }
		   ) or exit (1);

print <<EOF;
<domain type='xen' id='18'>
    <name>NAME</name>
    <os>
    <type>linux</type>
        <kernel>BASEPATH/kernel</kernel>
EOF

if ( $use_ramdisk ) {
    print "        <initrd>BASEPATH/ramdisk</initrd>\n";
}

print <<EOF;
        <root>/dev/sda1</root>
        <cmdline> ro</cmdline>
    </os>
    <memory>MEMORY</memory>
    <vcpu>VCPUS</vcpu>
    <devices>
        <disk type='file'>
            <source file='BASEPATH/root'/>
            <target dev='sda1'/>
        </disk>
EOF

if ( $use_ephemeral ) {
    print <<EOF;
        <disk type='file'>
            <source file='BASEPATH/ephemeral'/>
            <target dev='sda2'/>
        </disk>
EOF
}

print <<EOF;
        <disk type='file'>
            <source file='SWAPPATH/swap'/>
            <target dev='sda3'/>
        </disk>
        <interface type='bridge'>
            <source bridge='BRIDGEDEV'/>
            <mac address='PRIVMACADDR'/>
            <script path='/etc/xen/scripts/vif-bridge'/>
        </interface>
    </devices>
</domain>
EOF
