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# This file is part of cloud-init. See LICENSE file for license information.
class Platform(object):
"""
Base class for platforms
"""
platform_name = None
def __init__(self, config):
"""
Set up platform
"""
self.config = config
def get_image(self, img_conf):
"""
Get image using 'img_conf', where img_conf is a dict containing all
image configuration parameters
in this dict there must be a 'platform_ident' key containing
configuration for identifying each image on a per platform basis
see implementations for get_image() for details about the contents
of the platform's config entry
note: see 'releases' main_config.yaml for example entries
img_conf: configuration for image
return_value: cloud_tests.images instance
"""
raise NotImplementedError
def destroy(self):
"""
Clean up platform data
"""
pass
def _extract_img_platform_config(self, img_conf):
"""
extract platform configuration for current platform from img_conf
"""
platform_ident = img_conf.get('platform_ident')
if not platform_ident:
raise ValueError('invalid img_conf, missing \'platform_ident\'')
ident = platform_ident.get(self.platform_name)
if not ident:
raise ValueError('img_conf: {} missing config for platform {}'
.format(img_conf, self.platform_name))
return ident
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