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# This file is part of cloud-init. See LICENSE file for license information.
"""NoCloud KVM Image Base Class."""
from cloudinit import util as c_util
from tests.cloud_tests.images import base
from tests.cloud_tests.snapshots import nocloudkvm as nocloud_kvm_snapshot
class NoCloudKVMImage(base.Image):
"""NoCloud KVM backed image."""
platform_name = "nocloud-kvm"
def __init__(self, platform, config, img_path):
"""Set up image.
@param platform: platform object
@param config: image configuration
@param img_path: path to the image
"""
self.modified = False
self._img_path = img_path
super(NoCloudKVMImage, self).__init__(platform, config)
@property
def properties(self):
"""Dictionary containing: 'arch', 'os', 'version', 'release'."""
return {
'arch': self.config['arch'],
'os': self.config['family'],
'release': self.config['release'],
'version': self.config['version'],
}
def _execute(self, command, stdin=None, env=None):
"""Execute command in image, modifying image."""
return self.mount_image_callback(command, stdin=stdin, env=env)
def mount_image_callback(self, command, stdin=None, env=None):
"""Run mount-image-callback."""
env_args = []
if env:
env_args = ['env'] + ["%s=%s" for k, v in env.items()]
mic_chroot = ['sudo', 'mount-image-callback', '--system-mounts',
'--system-resolvconf', self._img_path,
'--', 'chroot', '_MOUNTPOINT_']
try:
out, err = c_util.subp(mic_chroot + env_args + list(command),
data=stdin, decode=False)
return (out, err, 0)
except c_util.ProcessExecutionError as e:
return (e.stdout, e.stderr, e.exit_code)
def snapshot(self):
"""Create snapshot of image, block until done."""
if not self._img_path:
raise RuntimeError()
instance = self.platform.create_image(
self.properties, self.config, self.features,
self._img_path, image_desc=str(self), use_desc='snapshot')
return nocloud_kvm_snapshot.NoCloudKVMSnapshot(
self.platform, self.properties, self.config,
self.features, instance)
def destroy(self):
"""Unset path to signal image is no longer used.
The removal of the images and all other items is handled by the
framework. In some cases we want to keep the images, so let the
framework decide whether to keep or destroy everything.
"""
self._img_path = None
super(NoCloudKVMImage, self).destroy()
# vi: ts=4 expandtab
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