[libvirt] [PATCH] Add test case update_devflag.py for update device flag
Nan Zhang
nzhang at redhat.com
Wed Sep 7 08:45:49 UTC 2011
Sorry, this patch is for test-API, missing the prefix, please ignore
this mail.
- nzhang
On 09/07/2011 03:54 PM, Nan Zhang wrote:
> ---
> repos/domain/update_devflag.py | 163 ++++++++++++++++++++++++++++++++++++++++
> 1 files changed, 163 insertions(+), 0 deletions(-)
> create mode 100644 repos/domain/update_devflag.py
>
> diff --git a/repos/domain/update_devflag.py b/repos/domain/update_devflag.py
> new file mode 100644
> index 0000000..30f75b0
> --- /dev/null
> +++ b/repos/domain/update_devflag.py
> @@ -0,0 +1,163 @@
> +#!/usr/bin/evn python
> +"""Update virtual device to guest from an XML file
> +"""
> +
> +__author__ = 'Nan Zhang: nzhang at redhat.com'
> +__date__ = 'Fri Sep 2, 2011'
> +__version__ = '0.1.0'
> +__credits__ = 'Copyright (C) 2011 Red Hat, Inc.'
> +__all__ = ['usage', 'update_devflag']
> +
> +import os
> +import re
> +import sys
> +import commands
> +from xml.dom import minidom
> +
> +def append_path(path):
> + """Append root path of package"""
> + if path in sys.path:
> + pass
> + else:
> + sys.path.append(path)
> +
> +pwd = os.getcwd()
> +result = re.search('(.*)libvirt-test-API', pwd)
> +append_path(result.group(0))
> +
> +from lib import connectAPI
> +from lib import domainAPI
> +from utils.Python import utils
> +from utils.Python import xmlbuilder
> +from exception import LibvirtAPI
> +
> +def usage():
> + print '''usage: mandatory arguments:
> + guestname
> + devtype
> + '''
> +
> +def check_params(params):
> + """Verify inputing parameter dictionary"""
> + logger = params['logger']
> + keys = ['guestname', 'devtype']
> + for key in keys:
> + if key not in params:
> + logger.error("%s is required" %key)
> + usage()
> + return 1
> + return 0
> +
> +def create_image(params, img_name, img_size):
> + """Create an image file"""
> + logger = params['logger']
> + stat, ret = commands.getstatusoutput("dd if=/dev/zero of=%s bs=1 \
> + count=1 seek=%s" % (img_name, img_size))
> + if stat == 0:
> + logger.debug("create image result:\n%s" % ret)
> + return True
> + else:
> + return False
> +
> +def check_updated_device(params, guestname, domobj, srcfile):
> + """Check if the device is updated"""
> + logger = params['logger']
> + xmlobj = domobj.get_xml_desc(guestname)
> + domxml = minidom.parseString(xmlobj)
> +
> + for diskTag in domxml.getElementsByTagName("source"):
> + if diskTag.parentNode.getAttribute("device") == 'cdrom':
> + upfile = diskTag.getAttribute("file")
> + elif diskTag.parentNode.getAttribute('device') == 'floppy':
> + upfile = diskTag.getAttribute("file")
> +
> + if upfile == srcfile:
> + return False, upfile
> + else:
> + return True, upfile
> +
> +def update_devflag(params):
> + """Update virtual device to a domain from xml"""
> +
> + # Initiate and check parameters
> + params_check_result = check_params(params)
> + if params_check_result:
> + return 1
> + logger = params['logger']
> + guestname = params['guestname']
> + devtype = params['devtype']
> + if devtype == 'cdrom':
> + xmlargs = {}
> + xmlargs['guestname'] = guestname
> + xmlargs['guesttype'] = 'kvm'
> + xmlargs['hdmodel'] = 'ide'
> + xmlargs['bootcd'] = '/var/lib/libvirt/boot/cdrom.img'
> + srcfile = xmlargs['bootcd']
> + create_image(params, srcfile, '100M')
> + elif devtype == 'floppy':
> + xmlargs = {}
> + xmlargs['guestname'] = guestname
> + xmlargs['floppysource'] = '/var/lib/libvirt/boot/floppy.img'
> + srcfile = xmlargs['floppysource']
> + create_image(params, srcfile, '2M')
> + else:
> + srcfile = None
> + logger.error("Wrong device type was specified.")
> + return 1
> +
> + if not params.has_key('flag'):
> + flag = domainAPI.VIR_DOMAIN_AFFECT_CONFIG
> +
> + # Connect to local hypervisor connection URI
> + util = utils.Utils()
> + uri = util.get_uri('127.0.0.1')
> + conn = connectAPI.ConnectAPI()
> + virconn = conn.open(uri)
> +
> + caps = conn.get_caps()
> + logger.debug(caps)
> +
> + # Generate device XML for updating
> + domobj = domainAPI.DomainAPI(virconn)
> + newxmlobj = xmlbuilder.XmlBuilder()
> +
> + if devtype == 'cdrom':
> + newdevxml = newxmlobj.build_cdrom(xmlargs)
> + elif devtype == 'floppy':
> + newdevxml = newxmlobj.build_floppy(xmlargs)
> +
> + logger.debug("block device xml desc:\n%s" %newdevxml)
> +
> + try:
> + try:
> + domobj.update_device_flag(guestname, newdevxml, flag)
> + res, upfile = check_updated_device(params, guestname, \
> + domobj, srcfile)
> + if res:
> + logger.info("success to update '%s' device: %s\n" % \
> + (devtype, upfile))
> + else:
> + logger.error("fail to update '%s' device: %s\n" % \
> + (devtype, upfile))
> + except LibvirtAPI, e:
> + logger.error("API error message: %s, error code is %s" %
> + (e.response()['message'], e.response()['code']))
> + conn.close()
> + logger.info("closed hypervisor connection")
> + return 1
> + finally:
> + conn.close()
> + logger.info("closed hypervisor connection")
> +
> + return 0
> +
> +def update_devflag_clean(params):
> + """Clean testing environment"""
> + logger = params['logger']
> +
> + if params['devtype'] == 'cdrom':
> + os.system('rm -f /var/lib/libvirt/boot/cdrom.img')
> + elif params['devtype'] == 'floppy':
> + os.system('rm -f /var/lib/libvirt/boot/floppy.img')
> + else:
> + logger.debug("image file was not found.")
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