congress/congress/datasources/glancev2_driver.py

143 lines
6.0 KiB
Python

# Copyright (c) 2014 VMware, Inc. All rights reserved.
#
# 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 __future__ import print_function
from __future__ import division
from __future__ import absolute_import
import glanceclient.v2.client as glclient
from oslo_log import log as logging
from congress.datasources import constants
from congress.datasources import datasource_driver
from congress.datasources import datasource_utils as ds_utils
LOG = logging.getLogger(__name__)
class GlanceV2Driver(datasource_driver.PollingDataSourceDriver,
datasource_driver.ExecutionDriver):
IMAGES = "images"
TAGS = "tags"
value_trans = {'translation-type': 'VALUE'}
images_translator = {
'translation-type': 'HDICT',
'table-name': IMAGES,
'selector-type': 'DICT_SELECTOR',
'field-translators':
({'fieldname': 'id', 'desc': 'UUID of image',
'translator': value_trans},
{'fieldname': 'status', 'desc': 'The image status',
'translator': value_trans},
{'fieldname': 'name',
'desc': 'Image Name', 'translator': value_trans},
{'fieldname': 'container_format',
'desc': 'The container format of image',
'translator': value_trans},
{'fieldname': 'created_at',
'desc': 'The date and time when the resource was created',
'translator': value_trans},
{'fieldname': 'updated_at',
'desc': 'The date and time when the resource was updated.',
'translator': value_trans},
{'fieldname': 'disk_format',
'desc': 'The disk format of the image.',
'translator': value_trans},
{'fieldname': 'owner',
'desc': 'The ID of the owner or tenant of the image',
'translator': value_trans},
{'fieldname': 'protected',
'desc': 'Indicates whether the image can be deleted.',
'translator': value_trans},
{'fieldname': 'min_ram',
'desc': 'minimum amount of RAM in MB required to boot the image',
'translator': value_trans},
{'fieldname': 'min_disk',
'desc': 'minimum disk size in GB required to boot the image',
'translator': value_trans},
{'fieldname': 'checksum', 'desc': 'Hash of the image data used',
'translator': value_trans},
{'fieldname': 'size',
'desc': 'The size of the image data, in bytes.',
'translator': value_trans},
{'fieldname': 'file',
'desc': 'URL for the virtual machine image file',
'translator': value_trans},
{'fieldname': 'kernel_id', 'desc': 'kernal id',
'translator': value_trans},
{'fieldname': 'ramdisk_id', 'desc': 'ramdisk id',
'translator': value_trans},
{'fieldname': 'schema',
'desc': 'URL for schema of the virtual machine image',
'translator': value_trans},
{'fieldname': 'visibility', 'desc': 'The image visibility',
'translator': value_trans},
{'fieldname': 'tags',
'translator': {'translation-type': 'LIST',
'table-name': TAGS,
'val-col': 'tag',
'val-col-desc': 'List of image tags',
'parent-key': 'id',
'parent-col-name': 'image_id',
'parent-key-desc': 'UUID of image',
'translator': value_trans}})}
TRANSLATORS = [images_translator]
def __init__(self, name='', args=None):
super(GlanceV2Driver, self).__init__(name, args=args)
datasource_driver.ExecutionDriver.__init__(self)
self.creds = args
session = ds_utils.get_keystone_session(self.creds)
self.glance = glclient.Client(session=session)
self.add_executable_client_methods(self.glance, 'glanceclient.v2.')
self.initialize_update_methods()
self._init_end_start_poll()
@staticmethod
def get_datasource_info():
result = {}
result['id'] = 'glancev2'
result['description'] = ('Datasource driver that interfaces with '
'OpenStack Images aka Glance.')
result['config'] = ds_utils.get_openstack_required_config()
result['config']['lazy_tables'] = constants.OPTIONAL
result['secret'] = ['password']
return result
def initialize_update_methods(self):
images_method = lambda: self._translate_images(
{'images': self.glance.images.list()})
self.add_update_method(images_method, self.images_translator)
@ds_utils.update_state_on_changed(IMAGES)
def _translate_images(self, obj):
"""Translate the images represented by OBJ into tables."""
LOG.debug("IMAGES: %s", str(dict(obj)))
row_data = GlanceV2Driver.convert_objs(
obj['images'], GlanceV2Driver.images_translator)
return row_data
def execute(self, action, action_args):
"""Overwrite ExecutionDriver.execute()."""
# action can be written as a method or an API call.
func = getattr(self, action, None)
if func and self.is_executable(func):
func(action_args)
else:
self._execute_api(self.glance, action, action_args)