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# This file is part of cloud-init. See LICENSE file for license information.
"""Base NoCloud KVM snapshot."""
import os
from tests.cloud_tests.snapshots import base
class NoCloudKVMSnapshot(base.Snapshot):
"""NoCloud KVM image copy backed snapshot."""
platform_name = "nocloud-kvm"
def __init__(self, platform, properties, config, features,
instance):
"""Set up snapshot.
@param platform: platform object
@param properties: image properties
@param config: image config
@param features: supported feature flags
"""
self.instance = instance
super(NoCloudKVMSnapshot, self).__init__(
platform, properties, config, features)
def launch(self, user_data, meta_data=None, block=True, start=True,
use_desc=None):
"""Launch instance.
@param user_data: user-data for the instance
@param instance_id: instance-id for the instance
@param block: wait until instance is created
@param start: start instance and wait until fully started
@param use_desc: description of snapshot instance use
@return_value: an Instance
"""
key_file = os.path.join(self.platform.config['data_dir'],
self.platform.config['public_key'])
user_data = self.inject_ssh_key(user_data, key_file)
instance = self.platform.create_image(
self.properties, self.config, self.features,
self.instance.name, image_desc=str(self), use_desc=use_desc,
user_data=user_data, meta_data=meta_data)
if start:
instance.start()
return instance
def inject_ssh_key(self, user_data, key_file):
"""Inject the authorized key into the user_data."""
with open(key_file) as f:
value = f.read()
key = 'ssh_authorized_keys:'
value = ' - %s' % value.strip()
user_data = user_data.split('\n')
if key in user_data:
user_data.insert(user_data.index(key) + 1, '%s' % value)
else:
user_data.insert(-1, '%s' % key)
user_data.insert(-1, '%s' % value)
return '\n'.join(user_data)
def destroy(self):
"""Clean up snapshot data."""
self.instance.destroy()
super(NoCloudKVMSnapshot, self).destroy()
# vi: ts=4 expandtab
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