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"""
Created on 2015-8-27
@author: y00228926
"""
import os
import shutil
import logging
from vstf.common.utils import check_and_kill, randomMAC, my_mkdir, check_call, check_output, my_sleep
from vstf.agent.env.basic.vm9pfs import VMConfigBy9pfs
LOG = logging.getLogger(__name__)
class VMControlOperation(object):
"""
a libivrt virsh wrapper for creating virtual machine.
"""
def __init__(self):
"""
all tmp files will be created under '/tmp/atf_vm_manager'
"""
work_dir = '/tmp/atf_vm_manager'
shutil.rmtree(work_dir, ignore_errors=True)
my_mkdir(work_dir)
self.work_dir = work_dir
self.vnc_index = 0
self.pci_index = 3
self.net_index = 0
self.vm_9p_controllers = {}
self.vm_configs = {}
self.image_mgr = None
@staticmethod
def composite_xml(context):
"""
composit a libvirt xml configuration for creating vm from context.
:param context: a dict containing all necessary options for creating a vm.
:return: libvirt xml configuration string
"""
from vm_xml_help import xml_head, xml_disk, xml_ovs, xml_pci, xml_9p, xml_tail, xml_ctrl_br, xml_br
xml = ''
tmp = xml_head.replace('VM_NAME', context['vm_name'])
tmp = tmp.replace('VM_MEMORY', str(context['vm_memory']))
tmp = tmp.replace('CPU_NUM', str(context['vm_cpu']))
xml += tmp
tmp = xml_disk.replace('IMAGE_TYPE', context['image_type'])
tmp = tmp.replace('IMAGE_PATH', context['image_path'])
xml += tmp
if context['9p_path']:
tmp = xml_9p.replace('9P_PATH', context['9p_path'])
xml += tmp
if context['eth_pci']:
for pci in context['eth_pci']:
bus = pci[:2]
slot = pci[3:5]
func = pci[6:7]
tmp = xml_pci.replace('BUS', bus)
tmp = tmp.replace('SLOT', slot)
tmp = tmp.replace('FUNCTION', func)
xml += tmp
if context['ctrl_br']:
tmp = xml_ctrl_br.replace('CTRL_BR', context['ctrl_br'])
tmp = tmp.replace('CTRL_MAC', context['ctrl_mac'])
tmp = tmp.replace('CTRL_MODEL', context['ctrl_model'])
xml += tmp
for tap_cfg in context['taps']:
if tap_cfg['br_type'] == "ovs":
br_type = "openvswitch"
else:
br_type = tap_cfg['br_type']
if br_type == 'bridge':
xml_ovs = xml_br
tmp = xml_ovs.replace('BR_TYPE', br_type)
tmp = tmp.replace('TAP_MAC', tap_cfg['tap_mac'])
tmp = tmp.replace('TAP_NAME', tap_cfg['tap_name'])
tmp = tmp.replace('BR_NAME', tap_cfg['br_name'])
xml += tmp
xml += xml_tail
return xml
@staticmethod
def check_required_options(context):
for key in ('vm_name', 'vm_memory', 'vm_cpu', 'image_path', 'image_type', 'taps'):
if not context.has_key(key):
raise Exception("vm config error, must set %s option" % key)
def set_vm_defaults(self, context):
vm_9p_path = '%s/%s' % (self.work_dir, context['vm_name'])
shutil.rmtree(vm_9p_path, ignore_errors=True)
my_mkdir(vm_9p_path)
default = {'vm_memory': 4194304,
'vm_cpu': 4,
'image_type': 'qcow2',
'br_type': 'ovs',
'9p_path': vm_9p_path,
'eth_pci': None,
'ctrl_br': 'br0',
'ctrl_mac': randomMAC(),
'ctrl_model': 'virtio',
'ctrl_ip_setting': '192.168.100.100/24',
'ctrl_gw': '192.168.100.1'
}
for k, v in default.items():
context.setdefault(k, v)
def _shutdown_vm(self):
out = check_output("virsh list | sed 1,2d | awk '{print $2}'", shell=True)
vm_set = set(out.split())
for vm in vm_set:
check_call("virsh shutdown %s" % vm, shell=True)
timeout = 60
# wait for gracefully shutdown
while timeout > 0:
out = check_output("virsh list | sed 1,2d | awk '{print $2}'", shell=True)
vm_set = set(out.split())
if len(vm_set) == 0:
break
timeout -= 2
my_sleep(2)
LOG.info("waiting for vms:%s to shutdown gracefully", vm_set)
# destroy by force
for vm in vm_set:
check_call("virsh destroy %s" % vm, shell=True)
# undefine all
out = check_output("virsh list --all | sed 1,2d | awk '{print $2}'", shell=True)
vm_set = set(out.split())
for vm in vm_set:
check_call("virsh undefine %s" % vm, shell=True)
# kill all qemu
check_and_kill('qemu-system-x86_64')
def clean_all_vms(self):
self._shutdown_vm()
for _, ctrl in self.vm_9p_controllers.items():
LOG.debug("remove vm9pfs dir:%s", ctrl.vm_9p_path)
shutil.rmtree(ctrl.vm_9p_path, ignore_errors=True)
self.vm_9p_controllers = {}
self.vm_configs = {}
# shutil.rmtree(self.work_dir, ignore_errors=True)
self.vnc_index = 0
self.pci_index = 3
self.net_index = 0
self.vms = []
return True
def create_vm(self, context):
self.set_vm_defaults(context)
self.check_required_options(context)
xml = self.composite_xml(context)
vm_name = context['vm_name']
file_name = os.path.join(self.work_dir, vm_name + '.xml')
with open(file_name, 'w') as f:
f.write(xml)
check_call('virsh define %s' % file_name, shell=True)
check_call('virsh start %s' % vm_name, shell=True)
vm_name = context['vm_name']
vm_9pfs = context['9p_path']
self.vm_9p_controllers[vm_name] = VMConfigBy9pfs(vm_9pfs)
self.vm_configs[vm_name] = context
LOG.debug("%s's vm_9pfs path:%s", vm_name, vm_9pfs)
return True
def wait_vm(self, vm_name):
vm9pctrl = self.vm_9p_controllers[vm_name]
ret = vm9pctrl.wait_up()
if ret not in (True,):
raise Exception('vm running but stuck in boot process, please manully check.')
LOG.debug('waitVM %s up ok, ret:%s', vm_name, ret)
return True
def init_config_vm(self, vm_name):
"""
using libvirt 9pfs to config boot up options like network ip/gw.
:param vm_name: the vm to be config with.
:return: True if succeed, Exception if fail.
"""
vm_cfg = self.vm_configs[vm_name]
vm9pctrl = self.vm_9p_controllers[vm_name]
# print self.vm_9p_controllers
init_cfg = vm_cfg['init_config']
if "ctrl_ip_setting" in init_cfg:
ret = vm9pctrl.config_ip(vm_cfg['ctrl_mac'], init_cfg['ctrl_ip_setting'])
assert ret == True
LOG.info('initConfigVM config ip ok')
if 'ctrl_gw' in init_cfg:
ret = vm9pctrl.config_gw(init_cfg['ctrl_gw'])
assert ret == True
LOG.info('initConfigVM ctrl_gw ok')
if "ctrl_ip_setting" in init_cfg and "amqp_server" in init_cfg:
identity = init_cfg['ctrl_ip_setting'].split('/')[0]
if init_cfg['amqp_id'].strip():
identity = init_cfg['amqp_id'].strip()
server = init_cfg['amqp_server']
port = init_cfg['amqp_port']
user = init_cfg['amqp_user']
passwd = init_cfg['amqp_passwd']
ret = vm9pctrl.config_amqp(identity, server, port, user, passwd)
assert ret == True
LOG.info('initConfigVM config_amqp ok')
if 'tap_pktloop_config' in init_cfg:
taps = vm_cfg['taps']
macs = []
for tap in taps:
macs.append(tap['tap_mac'])
ret = vm9pctrl.set_pktloop_dpdk(macs)
assert ret == True
LOG.info('initConfigVM set_pktloop_dpdk ok')
return True
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