c5ebf8deec
Most of the Windows-specific plugins were able to work on other platforms as well, as long as osutils provides the relevant functionalities. This restructuring is an effort for helping future additions of other platforms. Change-Id: I21a35eb6eb8e2439cfdf861c59afc51c3618a779
113 lines
3.4 KiB
Python
113 lines
3.4 KiB
Python
# Copyright 2013 Mirantis Inc.
|
|
# Copyright 2014 Cloudbase Solutions Srl
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
|
|
from oslo.config import cfg
|
|
import yaml
|
|
|
|
from cloudbaseinit.openstack.common import log as logging
|
|
from cloudbaseinit.plugins.common.userdataplugins import base
|
|
from cloudbaseinit.plugins.common.userdataplugins.cloudconfigplugins import (
|
|
factory
|
|
)
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
OPTS = [
|
|
cfg.ListOpt(
|
|
'cloud_config_plugins',
|
|
default=[],
|
|
help=(
|
|
'List which contains the name of the cloud config plugins '
|
|
'ordered by priority.'
|
|
),
|
|
)
|
|
]
|
|
CONF = cfg.CONF
|
|
CONF.register_opts(OPTS)
|
|
DEFAULT_ORDER_VALUE = 999
|
|
|
|
|
|
class CloudConfigError(Exception):
|
|
pass
|
|
|
|
|
|
class CloudConfigPluginExecutor(object):
|
|
"""A simple executor class for processing cloud-config plugins.
|
|
|
|
:kwarg plugins:
|
|
Pairs of plugin names and the values corresponding to that plugin.
|
|
"""
|
|
|
|
def __init__(self, **plugins):
|
|
def _lookup_priority(plugin):
|
|
try:
|
|
return CONF.cloud_config_plugins.index(plugin)
|
|
except ValueError:
|
|
# If the plugin was not specified in the order
|
|
# list, then default to a sane and unreachable value.
|
|
return DEFAULT_ORDER_VALUE
|
|
|
|
self._expected_plugins = sorted(
|
|
plugins.items(),
|
|
key=lambda item: _lookup_priority(item[0]))
|
|
|
|
@classmethod
|
|
def from_yaml(cls, stream):
|
|
"""Initialize an executor from an yaml stream."""
|
|
|
|
loader = getattr(yaml, 'CLoader', yaml.Loader)
|
|
try:
|
|
content = yaml.load(stream, Loader=loader)
|
|
except (TypeError, ValueError, AttributeError):
|
|
msg = "Invalid yaml stream provided."
|
|
LOG.error(msg)
|
|
raise CloudConfigError(msg)
|
|
|
|
return cls(**content)
|
|
|
|
def execute(self):
|
|
"""Call each plugin, in the order requested by the user."""
|
|
|
|
plugins = factory.load_plugins()
|
|
for plugin_name, value in self._expected_plugins:
|
|
method = plugins.get(plugin_name)
|
|
if not method:
|
|
LOG.error("Plugin %r is currently not supported", plugin_name)
|
|
continue
|
|
|
|
try:
|
|
method(value)
|
|
except Exception:
|
|
LOG.exception("Processing plugin %s failed", plugin_name)
|
|
|
|
|
|
class CloudConfigPlugin(base.BaseUserDataPlugin):
|
|
|
|
def __init__(self):
|
|
super(CloudConfigPlugin, self).__init__("text/cloud-config")
|
|
|
|
def process_non_multipart(self, part):
|
|
"""Process the given data, if it can be loaded through yaml."""
|
|
try:
|
|
executor = CloudConfigPluginExecutor.from_yaml(part)
|
|
except CloudConfigError:
|
|
LOG.error("Could not process the type %r", type(part))
|
|
else:
|
|
executor.execute()
|
|
|
|
def process(self, part):
|
|
payload = part.get_payload()
|
|
self.process_non_multipart(payload)
|