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Add xml parsing and fix up dom lookups

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This commit is contained in:
Thomas S Hatch 2011-03-18 09:22:08 -06:00
parent b9642481a2
commit 357e84de1f
1 changed files with 18 additions and 7 deletions
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25
salt/modules/virt.py
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@ -7,6 +7,8 @@ Work with vitual machines managed by libvirt
# Import Python Libs
import os
import StringIO
from xml.dom import minidom
# Import libvirt
import libvirt
@ -35,6 +37,8 @@ def _get_dom(vm_):
Return a domain object for the named vm
'''
conn = __get_conn()
if not list_vms().count(vm_):
raise Exception('The specified vm is not present')
return conn.lookupByName(vm_)
def list_vms():
@ -105,15 +109,15 @@ def graphics(vm_):
Returns the information on vnc for a given vm
'''
out = {'autoport': 'None', 'keymap': 'None', 'type': 'vnc', 'port': 'None', 'listen': 'None'}
xml = self.get_xml(vmid)
xml = get_xml(vm_)
ssock = StringIO.StringIO(xml)
doc = minidom.parse(ssock)
for node in doc.getElementsByTagName("domain"):
graphics = node.getAttribute("devices")
L = node.getElementsByTagName("graphics")
for node2 in L:
for k in node2.attributes.keys():
out[k] = node2.getAttribute(k)
g_nodes = node.getElementsByTagName("graphics")
for g_node in g_nodes:
for key in g_node.attributes.keys():
out[key] = g_node.getAttribute(key)
return out
def freemem():
@ -129,7 +133,7 @@ def freemem():
# Take off just enough to sustain the hypervisor
mem -= 256
for vm_ in list_vms():
dom = conn.lookupByName(vm_)
dom = _get_dom(vm_)
if dom.ID() > 0:
mem -= vm_.info()[2]/1024
return mem
@ -145,7 +149,7 @@ def freecpu():
conn = __get_conn()
cpus = conn.getInfo()[2]
for vm_ in list_vms():
dom = conn.lookupByName(vm_)
dom = _get_dom(vm_)
if dom.ID() > 0:
cpus -= vm_.info()[3]
return cpus
@ -162,6 +166,13 @@ def full_info():
'vm_info': vm_info(),
'freecpu': freecpu()}
def get_xml(vm_):
'''
Returns the xml for a given vm
'''
dom = _get_dom(vm_)
return dom.XMLDesc(0)
def shutdown(vm_):
'''
Send a soft shutdown signal to the named vm