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# This file is part of cloud-init. See LICENSE file for license information.
"""Base class for images."""
from ..util import TargetBase
class Image(TargetBase):
"""Base class for images."""
platform_name = None
def __init__(self, platform, config):
"""Set up image.
@param platform: platform object
@param config: image configuration
"""
self.platform = platform
self.config = config
def __str__(self):
"""A brief description of the image."""
return '-'.join((self.properties['os'], self.properties['release']))
@property
def properties(self):
"""{} containing: 'arch', 'os', 'version', 'release'."""
raise NotImplementedError
@property
def features(self):
"""Feature flags supported by this image.
@return_value: list of feature names
"""
return [k for k, v in self.config.get('features', {}).items() if v]
@property
def setup_overrides(self):
"""Setup options that need to be overridden for the image.
@return_value: dictionary to update args with
"""
# NOTE: more sophisticated options may be requied at some point
return self.config.get('setup_overrides', {})
def snapshot(self):
"""Create snapshot of image, block until done."""
raise NotImplementedError
def destroy(self):
"""Clean up data associated with image."""
pass
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