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# This file is part of cloud-init. See LICENSE file for license information.
class Snapshot(object):
"""
Base class for snapshots
"""
platform_name = None
def __init__(self, properties, config):
"""
Set up snapshot
"""
self.properties = properties
self.config = config
def __str__(self):
"""
a brief description of the snapshot
"""
return '-'.join((self.properties['os'], self.properties['release']))
def launch(self, user_data, meta_data=None, block=True, start=True,
use_desc=None):
"""
launch instance
user_data: user-data for the instance
instance_id: instance-id for the instance
block: wait until instance is created
start: start instance and wait until fully started
use_desc: description of snapshot instance use
return_value: an Instance
"""
raise NotImplementedError
def destroy(self):
"""
Clean up snapshot data
"""
pass
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