198 lines
5.9 KiB
Python
198 lines
5.9 KiB
Python
# Copyright (c) 2013 Mirantis Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import functools
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import six
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from sahara.conductor import resource
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from sahara import exceptions as exc
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from sahara.utils.openstack import glance
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PROP_DESCR = '_sahara_description'
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PROP_USERNAME = '_sahara_username'
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PROP_TAG = '_sahara_tag_'
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PROP_ALL_TAGS = '_all_tags'
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def image_manager():
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return SaharaImageManager()
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def wrap_entity(func):
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@functools.wraps(func)
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def handle(*args, **kwargs):
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res = func(*args, **kwargs)
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if isinstance(res, list):
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images = []
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for image in res:
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image = _transform_image_props(image)
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images.append(resource.ImageResource(image))
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return images
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else:
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res = _transform_image_props(res)
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return resource.ImageResource(res)
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return handle
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def _get_all_tags(image_props):
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tags = []
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for key, value in image_props.iteritems():
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if key.startswith(PROP_TAG) and value:
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tags.append(key)
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return tags
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def _get_meta_prop(image_props, prop, default=None):
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if PROP_ALL_TAGS == prop:
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return _get_all_tags(image_props)
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return image_props.get(prop, default)
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def _parse_tags(image_props):
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tags = _get_meta_prop(image_props, PROP_ALL_TAGS)
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return [t.replace(PROP_TAG, "") for t in tags]
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def _serialize_metadata(image):
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data = {}
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for key, value in image.iteritems():
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if key.startswith('_sahara') and value:
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data[key] = value
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return data
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def _get_compat_values(image):
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data = {}
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# TODO(vgridnev): Drop these values from APIv2
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data["OS-EXT-IMG-SIZE:size"] = image.size
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data['metadata'] = _serialize_metadata(image)
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data["minDisk"] = getattr(image, 'min_disk', 0)
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data["minRam"] = getattr(image, 'min_ram', 0)
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data["progress"] = getattr(image, 'progress', 100)
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data["status"] = image.status.upper()
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data['created'] = image.created_at
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data['updated'] = image.updated_at
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return data
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def _transform_image_props(image):
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data = _get_compat_values(image)
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data['username'] = _get_meta_prop(image, PROP_USERNAME, "")
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data['description'] = _get_meta_prop(image, PROP_DESCR, "")
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data['tags'] = _parse_tags(image)
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data['id'] = image.id
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data["name"] = image.name
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return data
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def _ensure_tags(tags):
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if not tags:
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return []
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return [tags] if isinstance(tags, six.string_types) else tags
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class SaharaImageManager(object):
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"""SaharaImageManager
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This class is intermediate layer between sahara and glanceclient.v2.images.
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It provides additional sahara properties for image such as description,
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image tags and image username.
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"""
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def __init__(self):
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self.client = glance.client().images
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@wrap_entity
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def get(self, image_id):
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image = self.client.get(image_id)
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return image
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@wrap_entity
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def find(self, **kwargs):
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images = self.client.list(**kwargs)
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num_matches = len(images)
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if num_matches == 0:
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raise exc.NotFoundException(kwargs, "No images matching %s.")
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elif num_matches > 1:
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raise exc.NoUniqueMatchException(response=images, query=kwargs)
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else:
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return images[0]
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@wrap_entity
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def list(self):
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return list(self.client.list())
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def set_meta(self, image_id, meta):
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self.client.update(image_id, remove_props=None, **meta)
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def delete_meta(self, image_id, meta_list):
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self.client.update(image_id, remove_props=meta_list)
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def set_image_info(self, image_id, username, description=None):
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"""Sets human-readable information for image.
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For example:
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Ubuntu 15 x64 with Java 1.7 and Apache Hadoop 2.1, ubuntu
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"""
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meta = {PROP_USERNAME: username}
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if description:
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meta[PROP_DESCR] = description
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self.set_meta(image_id, meta)
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def unset_image_info(self, image_id):
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"""Unsets all Sahara-related information.
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It removes username, description and tags from the specified image.
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"""
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image = self.get(image_id)
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meta = [PROP_TAG + tag for tag in image.tags]
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if image.description is not None:
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meta += [PROP_DESCR]
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if image.username is not None:
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meta += [PROP_USERNAME]
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self.delete_meta(image_id, meta)
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def tag(self, image_id, tags):
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"""Adds tags to the specified image."""
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tags = _ensure_tags(tags)
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self.set_meta(image_id, {PROP_TAG + tag: 'True' for tag in tags})
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def untag(self, image_id, tags):
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"""Removes tags from the specified image."""
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tags = _ensure_tags(tags)
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self.delete_meta(image_id, [PROP_TAG + tag for tag in tags])
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def list_by_tags(self, tags):
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"""Returns images having all of the specified tags."""
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tags = _ensure_tags(tags)
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return [i for i in self.list() if set(tags).issubset(i.tags)]
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def list_registered(self, name=None, tags=None):
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tags = _ensure_tags(tags)
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images_list = [i for i in self.list()
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if i.username and set(tags).issubset(i.tags)]
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if name:
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return [i for i in images_list if i.name == name]
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else:
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return images_list
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def get_registered_image(self, image_id):
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img = self.get(image_id)
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if img.username:
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return img
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else:
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raise exc.ImageNotRegistered(image_id)
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