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<?xml version="1.0" encoding="UTF-8"?>
<!--
This XSL-T file is used to construct two types of XML documents:
- one that libvirt can use to launch a Eucalyptus instance (the
job formerly performed by gen_*libvirt_xml Perl scripts). As input
it assumes an XML document produced the the Node Controller
that describes a Eucalyptus instance to be launched.
- one that libvirt can use to attach a disk to an instance
-->
<xsl:transform xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output encoding="UTF-8" indent="yes" method="xml"/>
<xsl:template match="/instance">
<!-- sanity check on the hypervisor type - we only know 'kvm' and 'xen' -->
<xsl:if test="/instance/hypervisor/@type != 'kvm' and /instance/hypervisor/@type != 'xen'">
<xsl:message terminate="yes">ERROR: invalid or unset /instance/hypervisor/@type parameter</xsl:message>
</xsl:if>
<domain>
<xsl:attribute name="type">
<xsl:value-of select="/instance/hypervisor/@type"/>
</xsl:attribute>
<name>
<xsl:value-of select="/instance/name"/>
</name>
<description>Eucalyptus instance <xsl:value-of select="/instance/name"/></description>
<os>
<xsl:choose>
<xsl:when test="/instance/os/@platform = 'linux' and /instance/backing/root/@type = 'image'">
<!-- for Linux image-store-based instances -->
<xsl:if test="/instance/hypervisor/@type = 'xen'">
<type>linux</type>
</xsl:if>
<xsl:if test="/instance/hypervisor/@type = 'kvm'">
<type>hvm</type>
</xsl:if>
<xsl:if test="/instance/ramdisk!=''">
<initrd>
<xsl:value-of select="/instance/ramdisk"/>
</initrd>
</xsl:if>
<xsl:if test="/instance/kernel!=''">
<kernel>
<xsl:value-of select="/instance/kernel"/>
</kernel>
</xsl:if>
<xsl:choose>
<xsl:when test="/instance/hypervisor/@type = 'kvm' and /instance/os/@virtioRoot = 'true'">
<cmdline>root=/dev/vda1 console=ttyS0</cmdline>
<root>/dev/vda1</root>
</xsl:when>
<xsl:otherwise>
<cmdline>root=/dev/sda1 console=ttyS0</cmdline>
<root>/dev/sda1</root>
</xsl:otherwise>
</xsl:choose>
</xsl:when>
<xsl:when test="/instance/os/@platform = 'windows' or /instance/backing/root/@type = 'ebs'">
<!-- for all Windows and EBS-backed-root Linux instances -->
<type>hvm</type>
<xsl:if test="/instance/hypervisor/@type = 'xen'">
<loader>/usr/lib/xen/boot/hvmloader</loader>
</xsl:if>
</xsl:when>
<xsl:otherwise>
<xsl:message terminate="yes">ERROR: invalid or unset /instance/os/@platform or /instance/backing/root/@type parameter</xsl:message>
</xsl:otherwise>
</xsl:choose>
</os>
<features>
<acpi/>
<xsl:if test="/instance/hypervisor/@type = 'xen' and ( /instance/os/@platform = 'windows' or /instance/backing/root/@type = 'ebs' )">
<apic/>
<pae/>
</xsl:if>
</features>
<clock offset="localtime"/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<vcpu>
<xsl:value-of select="/instance/cores"/>
</vcpu>
<memory>
<xsl:value-of select="/instance/memoryKB"/>
</memory>
<devices>
<xsl:if test="/instance/hypervisor/@type = 'xen' and ( /instance/os/@platform = 'windows' or /instance/backing/root/@type = 'ebs' )">
<xsl:choose>
<xsl:when test="/instance/hypervisor/@bitness = '32'">
<emulator>/usr/lib/xen/bin/qemu-dm</emulator>
</xsl:when>
<xsl:otherwise>
<emulator>/usr/lib64/xen/bin/qemu-dm</emulator>
</xsl:otherwise>
</xsl:choose>
</xsl:if>
<!-- disks or partitions (Xen) -->
<xsl:for-each select="/instance/disks/diskPath">
<disk>
<xsl:attribute name="device">
<xsl:value-of select="@targetDeviceType"/>
</xsl:attribute>
<xsl:attribute name="type">
<xsl:value-of select="@sourceType"/>
</xsl:attribute>
<source>
<xsl:choose>
<xsl:when test="@sourceType = 'file'">
<xsl:attribute name="file">
<xsl:value-of select="."/>
</xsl:attribute>
</xsl:when>
<xsl:when test="@sourceType = 'block'">
<xsl:attribute name="dev">
<xsl:value-of select="."/>
</xsl:attribute>
</xsl:when>
<xsl:otherwise>
<xsl:message terminate="yes">ERROR: invalid or unset /instance/disks/disk/@sourcetype parameter</xsl:message>
</xsl:otherwise>
</xsl:choose>
</source>
<target>
<xsl:choose>
<xsl:when test="/instance/hypervisor/@type='kvm' and ( /instance/os/@platform='windows' or /instance/os/@virtioRoot = 'true')">
<xsl:attribute name="bus">virtio</xsl:attribute>
<xsl:attribute name="dev">
<xsl:call-template name="string-replace-all">
<xsl:with-param name="text" select="@targetDeviceName"/>
<xsl:with-param name="replace" select="'sd'"/>
<xsl:with-param name="by" select="'vd'"/>
</xsl:call-template>
</xsl:attribute>
</xsl:when>
<xsl:when test="/instance/hypervisor/@type='xen' and ( /instance/os/@platform='windows' or /instance/backing/root/@type = 'ebs' )">
<xsl:attribute name="bus">xen</xsl:attribute>
<xsl:attribute name="dev">
<xsl:call-template name="string-replace-all">
<xsl:with-param name="text" select="@targetDeviceName"/>
<xsl:with-param name="replace" select="'sd'"/>
<xsl:with-param name="by" select="'xvd'"/>
</xsl:call-template>
</xsl:attribute>
</xsl:when>
<xsl:otherwise>
<xsl:attribute name="dev">
<xsl:value-of select="@targetDeviceName"/>
</xsl:attribute>
<xsl:attribute name="bus">
<xsl:value-of select="@targetDeviceBus"/>
</xsl:attribute>
</xsl:otherwise>
</xsl:choose>
</target>
</disk>
</xsl:for-each>
<xsl:if test="/instance/disks/floppyPath != ''">
<disk type="file" device="floppy">
<source>
<xsl:attribute name="file">
<xsl:value-of select="/instance/disks/floppyPath"/>
</xsl:attribute>
</source>
<target dev="fda"/>
</disk>
</xsl:if>
<!-- network cards -->
<xsl:for-each select="/instance/nics/nic">
<interface type="bridge">
<source>
<xsl:attribute name="bridge">
<xsl:value-of select="@bridgeDeviceName"/>
</xsl:attribute>
</source>
<mac>
<xsl:attribute name="address">
<xsl:value-of select="@mac"/>
</xsl:attribute>
</mac>
<xsl:choose>
<xsl:when test="/instance/hypervisor/@type = 'kvm' and /instance/os/@platform = 'windows'">
<model type="virtio"/>
</xsl:when>
<xsl:when test="/instance/hypervisor/@type = 'kvm' and /instance/os/@virtioNet = 'true'">
<model type="virtio"/>
</xsl:when>
<xsl:when test="/instance/hypervisor/@type = 'kvm' and /instance/os/@platform = 'linux'">
<model type="e1000"/>
</xsl:when>
</xsl:choose>
<xsl:if test="/instance/hypervisor/@type = 'xen'">
<script path="/etc/xen/scripts/vif-bridge"/>
</xsl:if>
</interface>
</xsl:for-each>
<!-- console -->
<xsl:choose>
<xsl:when test="/instance/hypervisor/@type = 'kvm'">
<serial type="file">
<source>
<xsl:attribute name="path">
<xsl:value-of select="/instance/consoleLogPath"/>
</xsl:attribute>
</source>
<target port="1"/>
</serial>
</xsl:when>
<xsl:when test="/instance/hypervisor/@type = 'xen' and /instance/os/@platform = 'windows'">
<serial type="pty">
<source path="/dev/pts/3"/>
<target port="0"/>
</serial>
<input type="tablet" bus="usb"/>
<input type="mouse" bus="ps2"/>
</xsl:when>
<xsl:when test="/instance/hypervisor/@type = 'xen' and /instance/backing/root/@type = 'ebs'">
<console type="pty"/>
</xsl:when>
</xsl:choose>
<!-- <graphics type='vnc' port='-1' autoport='yes' keymap='en-us' listen='0.0.0.0'/> -->
</devices>
</domain>
</xsl:template>
<xsl:template match="/volume">
<disk type="block">
<driver>
<xsl:choose>
<xsl:when test="/volume/hypervisor/@type='xen'">
<xsl:attribute name="name">phy</xsl:attribute>
</xsl:when>
<xsl:when test="/volume/hypervisor/@type='kvm'">
<xsl:attribute name="name">qemu</xsl:attribute>
</xsl:when>
</xsl:choose>
</driver>
<source>
<xsl:attribute name="dev">
<xsl:value-of select="/volume/diskPath"/>
</xsl:attribute>
</source>
<target>
<xsl:choose>
<!-- on KVM, always use virtio disk devices for Windows and when requested to do so in NC configuration -->
<!-- NOTE: Alternatively, we can limit non-Windows use of virtio to when contains(/volume/diskPath/@targetDeviceName, 'vd') -->
<xsl:when test="/volume/hypervisor/@type='kvm' and ( /volume/os/@platform='windows' or /volume/os/@virtioDisk = 'true')">
<xsl:attribute name="bus">virtio</xsl:attribute>
<xsl:attribute name="dev">
<xsl:call-template name="string-replace-all">
<xsl:with-param name="text" select="/volume/diskPath/@targetDeviceName"/>
<xsl:with-param name="replace" select="'sd'"/>
<xsl:with-param name="by" select="'vd'"/>
</xsl:call-template>
</xsl:attribute>
</xsl:when>
<!-- on Xen, always use Xen PV disk devices for Windows and when attaching to an EBS-backed instance -->
<!-- Long-term, we should probably mandate PV devices for instance-store-backed instances, too, but we did not want to break existing images -->
<xsl:when test="/volume/hypervisor/@type='xen' and ( /volume/os/@platform='windows' or /volume/backing/root/@type = 'ebs' )">
<xsl:attribute name="bus">xen</xsl:attribute>
<xsl:attribute name="dev">
<xsl:call-template name="string-replace-all">
<xsl:with-param name="text" select="/volume/diskPath/@targetDeviceName"/>
<xsl:with-param name="replace" select="'sd'"/>
<xsl:with-param name="by" select="'xvd'"/>
</xsl:call-template>
</xsl:attribute>
</xsl:when>
<xsl:otherwise>
<xsl:attribute name="dev">
<xsl:value-of select="/volume/diskPath/@targetDeviceName"/>
</xsl:attribute>
<xsl:attribute name="bus">
<xsl:value-of select="/volume/diskPath/@targetDeviceBus"/>
</xsl:attribute>
</xsl:otherwise>
</xsl:choose>
</target>
</disk>
</xsl:template>
<xsl:template name="string-replace-all">
<xsl:param name="text" />
<xsl:param name="replace" />
<xsl:param name="by" />
<xsl:choose>
<xsl:when test="contains($text, $replace)">
<xsl:value-of select="substring-before($text,$replace)" />
<xsl:value-of select="$by" />
<xsl:call-template name="string-replace-all">
<xsl:with-param name="text"
select="substring-after($text,$replace)" />
<xsl:with-param name="replace" select="$replace" />
<xsl:with-param name="by" select="$by" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$text" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:transform>
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