#!/usr/bin/python
import os,sys
from snack import SnackScreen,GridForm,Listbox,Entry,Label,Checkbox,Button
bridge="lxc0"
secno=3
macaddr="52:54:00:7d:7f:%02x"%secno
options={'qemubinary':'qemu-system-x86_64',
"accel":"-enable-kvm",
"memory":"1024M",
"drive":"-drive media=disk,index=0,if=virtio,file=drive0.qcow2",
"cdrom":"-drive media=cdrom,index=2,if=ide",
"sound":"-soundhw hda",
"net":"-net nic,macaddr=%s -net bridge,br=%s"%(macaddr,bridge),
"usb":"-usb"}
def choose_conf():
"""
Selects main machine configuration
CPU type, memory size, USB and sound hardware
"""
archs=['i386','x86_64']
grid = GridForm(screen,"Setting up a virtual machine",2,5)
archlabel=Label("CPU architecture")
archlist=Listbox(height=4,width=20)
for arch in archs:
archlist.append(arch,arch)
archlist.setCurrent(options['qemubinary'][12:])
memlabel=Label("Memory size")
memline=Entry(20,text=options['memory'])
checkusb=Checkbox("Enable USB",isOn=len(options["usb"]))
checksound=Checkbox("Enable sound",isOn=len(options["sound"]))
checkkvm=Checkbox("Enable KVM",isOn=len(options['accel']))
grid.add(archlabel,0,0,padding=(3,1,3,0))
grid.add(archlist,0,1,padding=(3,0,3,1))
grid.add(memlabel,1,0,padding=(3,1,3,0))
grid.add(memline,1,1,padding=(3,0,3,1),anchorTop=1)
grid.add(checkusb,0,2,padding=(3,1,3,0),anchorLeft=1)
grid.add(checksound,0,3,padding=(3,0,3,1),anchorLeft=1)
grid.add(checkkvm,1,2,padding=(3,1,3,1),anchorLeft=1)
prevbtn=Button("<<Back")
nextbtn=Button("Next>>")
grid.add(prevbtn,0,4,anchorLeft=1)
grid.add(nextbtn,1,4,anchorRight=1)
answer=grid.runOnce()
if answer == prevbtn or answer == u'ESC':
return False
else:
if checkusb.value():
options['usb']='-usb'
else:
options['usb']=''
if checksound.value():
options['sound']='-soundhw hba'
else :
options['sound']=''
if checkkvm.value():
options['accel'] = '-enable-kvm'
else:
options['accel'] = ''
options['qemubinary']='qemu-system-'+archlist.current()
options['memory']=memline.value()
return True
def choose_drive():
"""
Selects storage subsystem to use
import existing drive, use cdrom,
connect some image on first run
"""
grid = GridForm(screen,"Setting up a disk drives",1,5)
def mkradiogroup(choices, current)
"""
choises is an array of value,text tuples
current is value, which have to be selected
"""
rg = RadioGroup()
for choice in choices:
rg.add(choices[1],choices[0],current=choices[0])
return rg
def net_brige_conf():
"""
Choose net bridge based on /etc/qemu/bridge.conf"
"""
def choose_net():
"""
Select network type (bridge, tap or user)
Select parameters of the choosen network type
"""
grid = GridForm(screen,"Setting up a virtual networking",2,3)
typlbl = Label("Network type")
rg = mkradiogroup([('bridge','Attach to bridge'),
('tap','Use TAP device'),
('user','User mode networking'),
('vde','VDE virtual switch')],
netmode)
cardlbl = Label("Emulated hardware")
cardbox= Listbox(height=6,width=20,scroll=1)
grid.add(typlbl,0,0,padding=(3,1,3,0))
grid.add(rg,0,1,padding(3,0,3,0)
grid.add(cardlbl,1,0,padding=(3,1,3,0))
grid.add(cardbox,1,1,padding=(3,0,3,0))
prevbtn=Button("<<Back")
nextbtn=Button("Next>>")
grid.add(prevbtn,0,2,anchorLeft=1)
grid.add(nextbtn,1,2,anchorRight=1)
name=''
vmtype='private'
def choose_name():
"""
Selects name of virtual machine and sharing type
"""
global name,vmtype
grid = GridForm(screen,"Choosing name of virtual machine",1,5)
namelbl=Label("Enter a virtual machine name")
nameline=Entry(40,text=name)
shlbl = Lable("Select virtual machine accessability")
rg = mkradiogroup([('private','Private VM'),('shared','Shared VM'),
('auto','AutoStart VM')],vmtype)
grid.add(namelbl,0,0,padding=(3,1,3,0),anchorLeft=1)
grid.add(nameline,0,1,padding=(3,0,3,0),anchorLeft=1)
grid.add(shlbl,0,2,padding=(3,1,3,0),anchorleft=1)
grid.add(rg,0,3,padding=(3,0,3,0),anchorleft=1)
prevbtn=Button("<<Back")
nextbtn=Button("Next>>")
grid.add(prevbtn,0,4,anchorLeft=1)
grid.add(nextbtn,1,4,anchorRight=1)
while not name.value():
answer=grid.runOnce()
if answer == prevbtn or answer == u'ESC':
return False
name = nameline.value()
vmtype = rg.getSelection()
return True
wizard=[choose_name,choose_conf,choose_drive,choose_net,None]
try:
screen=SnackScreen()
i=0
while i<len(wizard):
if wizard[i]:
nxt=wizard[i]()
else:
nxt=True
if callable(nxt):
wizard[i+1] = nxt
if nxt:
i+=1
else
i-=1
if (i<0):
sys.exit(1)
finally:
screen.finish()
with open("start.template","r") as f:
template=f.read()
vmdir = "~/VWs/%s" % name
print repr(ret)
print repr(options)
sys.exit(1)
os.mkdir(vmdir)
with open(vmdir +"/start",w) as f:
f.write(template.format(options))
os.chmod(0755,vmdir + "/start")
os.system("qemu-img create -f qcow2 "+vmdir+"/drive0.qcow2")