def create(cls, conn, msg):
try:
Guest.storage_mode = msg['storage_mode']
guest = Guest(uuid=msg['uuid'],
name=msg['name'],
template_path=msg['template_path'],
disk=msg['disks'][0],
xml=msg['xml'])
if Guest.storage_mode == StorageMode.glusterfs.value:
Guest.dfs_volume = msg['dfs_volume']
Guest.init_gfapi()
guest.system_image_path = guest.disk['path']
q_creating_guest.put({
'storage_mode': Guest.storage_mode,
'dfs_volume': Guest.dfs_volume,
'uuid': guest.uuid,
'template_path': guest.template_path,
'system_image_path': guest.system_image_path
})
if not guest.generate_system_image():
raise RuntimeError('System image generate failure.')
if not guest.define_by_xml(conn=conn):
raise RuntimeError(
'Define the instance of virtual machine by xml failure.')
guest_event_emit.creating(uuid=guest.uuid, progress=92)
disk_info = dict()
if Guest.storage_mode == StorageMode.glusterfs.value:
disk_info = Disk.disk_info_by_glusterfs(
dfs_volume=guest.dfs_volume,
image_path=guest.system_image_path)
elif Guest.storage_mode in [
StorageMode.local.value, StorageMode.shared_mount.value
]:
disk_info = Disk.disk_info_by_local(
image_path=guest.system_image_path)
# 由该线程最顶层的异常捕获机制，处理其抛出的异常
guest.execute_os_template_initialize_operates(
guest=conn.lookupByUUIDString(uuidstr=guest.uuid),
os_template_initialize_operates=msg[
'os_template_initialize_operates'],
os_type=msg['os_type'])
extend_data = dict()
extend_data.update({'disk_info': disk_info})
guest_event_emit.creating(uuid=guest.uuid, progress=97)
if not guest.start_by_uuid(conn=conn):
raise RuntimeError(
'Start the instance of virtual machine by uuid failure.')
cls.quota(guest=conn.lookupByUUIDString(uuidstr=guest.uuid),
msg=msg)
response_emit.success(
_object=msg['_object'],
action=msg['action'],
uuid=msg['uuid'],
data=extend_data,
passback_parameters=msg.get('passback_parameters'))
except:
logger.error(traceback.format_exc())
log_emit.error(traceback.format_exc())
response_emit.failure(
_object=msg['_object'],
action=msg.get('action'),
uuid=msg.get('uuid'),
passback_parameters=msg.get('passback_parameters'))
