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virtinst: Add DomainSnapshot object and some plumbing

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Just for parsing domainsnapshot XML and performing some support checks
This commit is contained in:
Cole Robinson 2013-08-05 17:20:35 -04:00
parent 3b9c397d11
commit 9d11c7eae3
6 changed files with 131 additions and 0 deletions
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37
tests/xmlparse-xml/change-snapshot-in.xml Normal file
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@ -0,0 +1,37 @@
<domainsnapshot>
<name>offline-root-child1</name>
<state>shutoff</state>
<description>offline desk</description>
<parent>
<name>offline-root</name>
</parent>
<creationTime>1375905916</creationTime>
<memory snapshot='no'/>
<disks>
<disk name='hda' snapshot='internal'/>
</disks>
<domain type='test'>
<name>test-internal-snapshots</name>
<uuid>12345678-1234-fddf-1234-12345678ffff</uuid>
<memory unit='KiB'>409600</memory>
<currentMemory unit='KiB'>409600</currentMemory>
<vcpu placement='static'>1</vcpu>
<bootloader>/tmp/bootfoo</bootloader>
<os>
<type arch='i686'>xen</type>
</os>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<disk type='file' device='disk'>
<source file='/dev/default-pool/test-clone-simple.img'/>
<target dev='hda' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<controller type='ide' index='0'/>
</devices>
</domain>
<active>0</active>
</domainsnapshot>

39
tests/xmlparse-xml/change-snapshot-out.xml Normal file
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@ -0,0 +1,39 @@
<domainsnapshot>
<name>name-foo</name>
<state>somestate</state>
<description>foo
newline
indent</description>
<parent>
<name>newparent</name>
</parent>
<creationTime>1234</creationTime>
<memory snapshot="no"/>
<disks>
<disk name="hda" snapshot="internal"/>
</disks>
<domain type="test">
<name>test-internal-snapshots</name>
<uuid>12345678-1234-fddf-1234-12345678ffff</uuid>
<memory unit="KiB">409600</memory>
<currentMemory unit="KiB">409600</currentMemory>
<vcpu placement="static">1</vcpu>
<bootloader>/tmp/bootfoo</bootloader>
<os>
<type arch="i686">xen</type>
</os>
<clock offset="utc"/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<disk type="file" device="disk">
<source file="/dev/default-pool/test-clone-simple.img"/>
<target dev="hda" bus="ide"/>
<address type="drive" controller="0" bus="0" target="0" unit="0"/>
</disk>
<controller type="ide" index="0"/>
</devices>
</domain>
<active>0</active>
</domainsnapshot>

14
tests/xmlparse.py
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@ -787,6 +787,20 @@ class XMLParseTest(unittest.TestCase):
self._alter_compare(guest.get_xml_config(), outfile)
def testChangeSnapshot(self):
basename = "change-snapshot"
infile = "tests/xmlparse-xml/%s-in.xml" % basename
outfile = "tests/xmlparse-xml/%s-out.xml" % basename
snap = virtinst.DomainSnapshot(conn, parsexml=file(infile).read())
check = self._make_checker(snap)
check("name", "offline-root-child1", "name-foo")
check("state", "shutoff", "somestate")
check("description", "offline desk", "foo\nnewline\n indent")
check("parent", "offline-root", "newparent")
check("creationTime", 1375905916, 1234)
utils.diff_compare(snap.get_xml_config(), outfile)
def testzzzzCheckProps(self):
# pylint: disable=W0212

1
virtinst/__init__.py
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@ -61,5 +61,6 @@ from virtinst.distroinstaller import DistroInstaller
from virtinst.guest import Guest
from virtinst.cloner import Cloner
from virtinst.snapshot import DomainSnapshot
from virtinst.connection import VirtualConnection

37
virtinst/snapshot.py Normal file
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@ -0,0 +1,37 @@
#
# Copyright 2013 Red Hat, Inc.
# Cole Robinson <crobinso@redhat.com>
#
# 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; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA.
from virtinst.xmlbuilder import XMLBuilder, XMLProperty
class DomainSnapshot(XMLBuilder):
_XML_ROOT_XPATH = "/domainsnapshot"
_XML_PROP_ORDER = ["name", "description", "creationTime"]
name = XMLProperty(xpath="./name")
description = XMLProperty(xpath="./description")
state = XMLProperty(xpath="./state")
creationTime = XMLProperty(xpath="./creationTime", is_int=True)
parent = XMLProperty(xpath="./parent/name")
# Missing bits:
# <memory> @type and @file
# <disks> block which has a psuedo VM disk device
# <domain> block which tracks the snapshot guest XML
# <active> which should list active status for an internal snapshot

3
virtinst/support.py
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@ -342,6 +342,9 @@ SUPPORT_DOMAIN_JOB_INFO = _make(function="virDomain.jobInfo", args=())
SUPPORT_DOMAIN_CONSOLE_STREAM = _make(version=9003)
SUPPORT_DOMAIN_SET_METADATA = _make(version=9010)
SUPPORT_DOMAIN_CPU_HOST_MODEL = _make(version=9010)
SUPPORT_DOMAIN_LIST_SNAPSHOTS = _make(function="virDomain.listAllSnapshots",
args=())
# Pool checks
# This can't ever require a pool object for back compat reasons