def _get_leaf_checkpoint_name(vm, dom):
flags = libvirt.VIR_DOMAIN_CHECKPOINT_LIST_TOPOLOGICAL
try:
checkpoints = dom.listAllCheckpoints(flags=flags)
return checkpoints[-1].getName() if checkpoints else None
except libvirt.libvirtError as e:
raise exception.CheckpointError(
reason="Failed to fetch defined leaf checkpoint: {}".format(e),
vm_id=vm.id)
def _validate_parent_id(vm, dom, parent_checkpoint_id):
leaf_checkpoint_id = _get_leaf_checkpoint_name(vm, dom)
if parent_checkpoint_id != leaf_checkpoint_id:
raise exception.CheckpointError(
reason="Parent checkpoint ID does not "
"match the actual leaf checkpoint",
parent_checkpoint_id=parent_checkpoint_id,
leaf_checkpoint_id=leaf_checkpoint_id,
vm_id=vm.id)
def list_checkpoints(vm, dom):
flags = libvirt.VIR_DOMAIN_CHECKPOINT_LIST_TOPOLOGICAL
try:
checkpoints = dom.listAllCheckpoints(flags=flags)
result = [checkpoint.getName() for checkpoint in checkpoints]
except libvirt.libvirtError as e:
raise exception.CheckpointError(
reason="Failed to fetch defined checkpoints list: {}".format(e),
vm_id=vm.id)
return dict(result=result)
def __init__(self, checkpoint_config):
self.id = checkpoint_config.get("id")
self.xml = checkpoint_config.get("xml")
if "config" in checkpoint_config:
self.config = BackupConfig(checkpoint_config["config"])
else:
self.config = None
if self.config is None and self.xml is None:
raise exception.CheckpointError(
reason="Cannot redefine checkpoint without "
"checkpoint XML or backup config",
checkpoint_id=self.id)