XML parser for /etc/libvirt/qemu/*.xml files

docs/shared_parsers_catalog/qemu_xml.rst

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+.. automodule:: insights.parsers.qemu_xml
+   :members:
+   :show-inheritance:

insights/parsers/qemu_xml.py

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+"""
+QemuXML file ``/etc/libvirt/qemu/*.xml``
+----------------------------------------
+"""
+from .. import XMLParser, parser
+from insights.specs import Specs
+
+
+@parser(Specs.qemu_xml)
+class QemuXML(XMLParser):
+    """This class parses xml files under ``/etc/libvirt/qemu/`` using
+    ``XMLParser`` base parser.
+
+    Sample file::
+
+        <!--
+        WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE
+        OVERWRITTEN AND LOST. Changes to this xml configuration should be made using:
+          virsh edit 05-s00c06h0
+        or other application using the libvirt API.
+        -->
+
+        <domain type='kvm'>
+          <name>05-s00c06h0</name>
+          <uuid>02cf0bba-2bd6-11e7-8337-e4115b9a50d0</uuid>
+          <memory unit='KiB'>12582912</memory>
+          <currentMemory unit='KiB'>12582912</currentMemory>
+          <vcpu placement='static'>4</vcpu>
+          <cputune>
+            <vcpupin vcpu='0' cpuset='1'/>
+            <vcpupin vcpu='1' cpuset='2'/>
+            <vcpupin vcpu='2' cpuset='3'/>
+            <vcpupin vcpu='3' cpuset='4'/>
+            <emulatorpin cpuset='1-4'/>
+          </cputune>
+          <numatune>
+            <memory mode='strict' nodeset='0-1'/>
+            <memnode cellid='0' mode='strict' nodeset='0'/>
+            <memnode cellid='1' mode='strict' nodeset='1'/>
+          </numatune>
+          <os>
+            <type arch='x86_64' machine='pc-i440fx-rhel7.0.0'>hvm</type>
+            <boot dev='hd'/>
+            <boot dev='network'/>
+            <bootmenu enable='yes' timeout='1000'/>
+            <bios useserial='yes' rebootTimeout='0'/>
+          </os>
+          <features>
+            <acpi/>
+            <apic/>
+            <pae/>
+          </features>
+          <cpu>
+            <numa>
+              <cell id='0' cpus='0-1' memory='6291456' unit='KiB'/>
+              <cell id='1' cpus='2-3' memory='6291456' unit='KiB'/>
+            </numa>
+          </cpu>
+          <clock offset='utc'/>
+          <on_poweroff>destroy</on_poweroff>
+          <on_reboot>restart</on_reboot>
+          <on_crash>restart</on_crash>
+          <devices>
+            <emulator>/usr/libexec/qemu-kvm</emulator>
+            <disk type='file' device='disk'>
+              <driver name='qemu' type='raw' cache='none' io='threads'/>
+              <source file='/var/lib/libvirt/images/05-s00c06h0_1.img'/>
+              <target dev='vda' bus='virtio'/>
+              <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
+            </disk>
+            <controller type='usb' index='0'>
+              <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+            </controller>
+            <controller type='pci' index='0' model='pci-root'/>
+            <controller type='virtio-serial' index='0'>
+              <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+            </controller>
+            <interface type='hostdev' managed='yes'>
+              <mac address='b2:59:73:15:00:00'/>
+              <source>
+                <address type='pci' domain='0x0000' bus='0x04' slot='0x10' function='0x0'/>
+              </source>
+              <rom bar='on' file='/opt/vcp/share/ipxe/808610ed.rom'/>
+              <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+            </interface>
+            <interface type='hostdev' managed='yes'>
+              <mac address='b2:59:73:15:00:01'/>
+              <source>
+                <address type='pci' domain='0x0000' bus='0x04' slot='0x10' function='0x1'/>
+              </source>
+              <rom bar='on' file='/opt/vcp/share/ipxe/808610ed.rom'/>
+              <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/>
+            </interface>
+            <serial type='pty'>
+              <target port='0'/>
+            </serial>
+            <console type='pty'>
+              <target type='serial' port='0'/>
+            </console>
+            <channel type='pipe'>
+              <source path='/var/lib/libvirt/qemu/channels/FROM-05-s00c06h0'/>
+              <target type='virtio' name='virtio2host'/>
+              <address type='virtio-serial' controller='0' bus='0' port='1'/>
+            </channel>
+            <channel type='pipe'>
+              <source path='/var/lib/libvirt/qemu/channels/HGC-05-s00c06h0'/>
+              <target type='virtio' name='virtio_host_guest_check'/>
+              <address type='virtio-serial' controller='0' bus='0' port='2'/>
+            </channel>
+            <input type='mouse' bus='ps2'/>
+            <input type='keyboard' bus='ps2'/>
+            <graphics type='vnc' port='-1' autoport='yes'>
+              <listen type='address'/>
+            </graphics>
+            <video>
+              <model type='cirrus' vram='16384' heads='1' primary='yes'/>
+              <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+            </video>
+            <watchdog model='i6300esb' action='reset'>
+              <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
+            </watchdog>
+            <memballoon model='virtio'>
+              <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
+            </memballoon>
+          </devices>
+        </domain>
+
+    Examples:
+        >>> xml_numa.file_name == 'vm.xml'
+        True
+        >>> xml_numa.vm_name == '05-s00c06h0'
+        True
+        >>> memnode = xml_numa.get_elements('./numatune/memnode', None)
+        >>> len(memnode[0].items()) == 3
+        True
+        >>> len(memnode[1].items()) == 3
+        True
+        >>> memnode[0].get('cellid') == '0'
+        True
+        >>> memnode[1].get('mode') == 'strict'
+        True
+    """
+    def parse_dom(self):
+        if self.dom is None:
+            return
+        else:
+            domain = {}
+            for child in self.dom:
+                if not child.getchildren():
+                    domain[child.tag] = child.text
+                else:
+                    domain[child.tag] = [c.items() for c in child.getchildren()]
+
+            return domain
+
+    @property
+    def vm_name(self):
+        return self.data.get('name', None)