450 lines
15 KiB
Python
450 lines
15 KiB
Python
# Copyright 2011 Justin Santa Barbara
|
|
# 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.
|
|
|
|
"""The volumes api."""
|
|
|
|
import ast
|
|
|
|
from oslo_utils import uuidutils
|
|
import webob
|
|
from webob import exc
|
|
|
|
from cinder.api import common
|
|
from cinder.api.openstack import wsgi
|
|
from cinder.api import xmlutil
|
|
from cinder import exception
|
|
from cinder.i18n import _, _LI
|
|
from cinder.openstack.common import log as logging
|
|
from cinder import utils
|
|
from cinder import volume as cinder_volume
|
|
from cinder.volume import utils as volume_utils
|
|
from cinder.volume import volume_types
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
def _translate_attachment_detail_view(_context, vol):
|
|
"""Maps keys for attachment details view."""
|
|
|
|
d = _translate_attachment_summary_view(_context, vol)
|
|
|
|
# No additional data / lookups at the moment
|
|
|
|
return d
|
|
|
|
|
|
def _translate_attachment_summary_view(_context, vol):
|
|
"""Maps keys for attachment summary view."""
|
|
d = {}
|
|
|
|
volume_id = vol['id']
|
|
|
|
# NOTE(justinsb): We use the volume id as the id of the attachment object
|
|
d['id'] = volume_id
|
|
|
|
d['volume_id'] = volume_id
|
|
d['server_id'] = vol['instance_uuid']
|
|
d['host_name'] = vol['attached_host']
|
|
if vol.get('mountpoint'):
|
|
d['device'] = vol['mountpoint']
|
|
|
|
return d
|
|
|
|
|
|
def _translate_volume_detail_view(context, vol, image_id=None):
|
|
"""Maps keys for volumes details view."""
|
|
|
|
d = _translate_volume_summary_view(context, vol, image_id)
|
|
|
|
# No additional data / lookups at the moment
|
|
|
|
return d
|
|
|
|
|
|
def _translate_volume_summary_view(context, vol, image_id=None):
|
|
"""Maps keys for volumes summary view."""
|
|
d = {}
|
|
|
|
d['id'] = vol['id']
|
|
d['status'] = vol['status']
|
|
d['size'] = vol['size']
|
|
d['availability_zone'] = vol['availability_zone']
|
|
d['created_at'] = vol['created_at']
|
|
|
|
# Need to form the string true/false explicitly here to
|
|
# maintain our API contract
|
|
if vol['bootable']:
|
|
d['bootable'] = 'true'
|
|
else:
|
|
d['bootable'] = 'false'
|
|
|
|
d['attachments'] = []
|
|
if vol['attach_status'] == 'attached':
|
|
attachment = _translate_attachment_detail_view(context, vol)
|
|
d['attachments'].append(attachment)
|
|
|
|
d['display_name'] = vol['display_name']
|
|
d['display_description'] = vol['display_description']
|
|
|
|
if vol['volume_type_id'] and vol.get('volume_type'):
|
|
d['volume_type'] = vol['volume_type']['name']
|
|
else:
|
|
d['volume_type'] = vol['volume_type_id']
|
|
|
|
d['snapshot_id'] = vol['snapshot_id']
|
|
d['source_volid'] = vol['source_volid']
|
|
|
|
d['encrypted'] = vol['encryption_key_id'] is not None
|
|
|
|
if image_id:
|
|
d['image_id'] = image_id
|
|
|
|
LOG.info(_LI("vol=%s"), vol, context=context)
|
|
|
|
if vol.get('volume_metadata'):
|
|
metadata = vol.get('volume_metadata')
|
|
d['metadata'] = dict((item['key'], item['value']) for item in metadata)
|
|
# avoid circular ref when vol is a Volume instance
|
|
elif vol.get('metadata') and isinstance(vol.get('metadata'), dict):
|
|
d['metadata'] = vol['metadata']
|
|
else:
|
|
d['metadata'] = {}
|
|
|
|
return d
|
|
|
|
|
|
def make_attachment(elem):
|
|
elem.set('id')
|
|
elem.set('server_id')
|
|
elem.set('host_name')
|
|
elem.set('volume_id')
|
|
elem.set('device')
|
|
|
|
|
|
def make_volume(elem):
|
|
elem.set('id')
|
|
elem.set('status')
|
|
elem.set('size')
|
|
elem.set('availability_zone')
|
|
elem.set('created_at')
|
|
elem.set('display_name')
|
|
elem.set('bootable')
|
|
elem.set('display_description')
|
|
elem.set('volume_type')
|
|
elem.set('snapshot_id')
|
|
elem.set('source_volid')
|
|
|
|
attachments = xmlutil.SubTemplateElement(elem, 'attachments')
|
|
attachment = xmlutil.SubTemplateElement(attachments, 'attachment',
|
|
selector='attachments')
|
|
make_attachment(attachment)
|
|
|
|
# Attach metadata node
|
|
elem.append(common.MetadataTemplate())
|
|
|
|
|
|
volume_nsmap = {None: xmlutil.XMLNS_VOLUME_V1, 'atom': xmlutil.XMLNS_ATOM}
|
|
|
|
|
|
class VolumeTemplate(xmlutil.TemplateBuilder):
|
|
def construct(self):
|
|
root = xmlutil.TemplateElement('volume', selector='volume')
|
|
make_volume(root)
|
|
return xmlutil.MasterTemplate(root, 1, nsmap=volume_nsmap)
|
|
|
|
|
|
class VolumesTemplate(xmlutil.TemplateBuilder):
|
|
def construct(self):
|
|
root = xmlutil.TemplateElement('volumes')
|
|
elem = xmlutil.SubTemplateElement(root, 'volume', selector='volumes')
|
|
make_volume(elem)
|
|
return xmlutil.MasterTemplate(root, 1, nsmap=volume_nsmap)
|
|
|
|
|
|
class CommonDeserializer(wsgi.MetadataXMLDeserializer):
|
|
"""Common deserializer to handle xml-formatted volume requests.
|
|
|
|
Handles standard volume attributes as well as the optional metadata
|
|
attribute
|
|
"""
|
|
|
|
metadata_deserializer = common.MetadataXMLDeserializer()
|
|
|
|
def _extract_volume(self, node):
|
|
"""Marshal the volume attribute of a parsed request."""
|
|
volume = {}
|
|
volume_node = self.find_first_child_named(node, 'volume')
|
|
|
|
attributes = ['display_name', 'display_description', 'size',
|
|
'volume_type', 'availability_zone', 'imageRef',
|
|
'snapshot_id', 'source_volid']
|
|
for attr in attributes:
|
|
if volume_node.getAttribute(attr):
|
|
volume[attr] = volume_node.getAttribute(attr)
|
|
|
|
metadata_node = self.find_first_child_named(volume_node, 'metadata')
|
|
if metadata_node is not None:
|
|
volume['metadata'] = self.extract_metadata(metadata_node)
|
|
|
|
return volume
|
|
|
|
|
|
class CreateDeserializer(CommonDeserializer):
|
|
"""Deserializer to handle xml-formatted create volume requests.
|
|
|
|
Handles standard volume attributes as well as the optional metadata
|
|
attribute
|
|
"""
|
|
|
|
def default(self, string):
|
|
"""Deserialize an xml-formatted volume create request."""
|
|
dom = utils.safe_minidom_parse_string(string)
|
|
volume = self._extract_volume(dom)
|
|
return {'body': {'volume': volume}}
|
|
|
|
|
|
class VolumeController(wsgi.Controller):
|
|
"""The Volumes API controller for the OpenStack API."""
|
|
|
|
def __init__(self, ext_mgr):
|
|
self.volume_api = cinder_volume.API()
|
|
self.ext_mgr = ext_mgr
|
|
super(VolumeController, self).__init__()
|
|
|
|
@wsgi.serializers(xml=VolumeTemplate)
|
|
def show(self, req, id):
|
|
"""Return data about the given volume."""
|
|
context = req.environ['cinder.context']
|
|
|
|
try:
|
|
vol = self.volume_api.get(context, id, viewable_admin_meta=True)
|
|
req.cache_db_volume(vol)
|
|
except exception.NotFound:
|
|
raise exc.HTTPNotFound()
|
|
|
|
utils.add_visible_admin_metadata(vol)
|
|
|
|
return {'volume': _translate_volume_detail_view(context, vol)}
|
|
|
|
def delete(self, req, id):
|
|
"""Delete a volume."""
|
|
context = req.environ['cinder.context']
|
|
|
|
LOG.info(_LI("Delete volume with id: %s"), id, context=context)
|
|
|
|
try:
|
|
volume = self.volume_api.get(context, id)
|
|
self.volume_api.delete(context, volume)
|
|
except exception.NotFound:
|
|
raise exc.HTTPNotFound()
|
|
return webob.Response(status_int=202)
|
|
|
|
@wsgi.serializers(xml=VolumesTemplate)
|
|
def index(self, req):
|
|
"""Returns a summary list of volumes."""
|
|
return self._items(req, entity_maker=_translate_volume_summary_view)
|
|
|
|
@wsgi.serializers(xml=VolumesTemplate)
|
|
def detail(self, req):
|
|
"""Returns a detailed list of volumes."""
|
|
return self._items(req, entity_maker=_translate_volume_detail_view)
|
|
|
|
def _items(self, req, entity_maker):
|
|
"""Returns a list of volumes, transformed through entity_maker."""
|
|
|
|
# pop out limit and offset , they are not search_opts
|
|
search_opts = req.GET.copy()
|
|
search_opts.pop('limit', None)
|
|
search_opts.pop('offset', None)
|
|
|
|
for k, v in search_opts.iteritems():
|
|
try:
|
|
search_opts[k] = ast.literal_eval(v)
|
|
except (ValueError, SyntaxError):
|
|
LOG.debug('Could not evaluate value %s, assuming string', v)
|
|
|
|
context = req.environ['cinder.context']
|
|
utils.remove_invalid_filter_options(context,
|
|
search_opts,
|
|
self._get_volume_search_options())
|
|
|
|
volumes = self.volume_api.get_all(context, marker=None, limit=None,
|
|
sort_key='created_at',
|
|
sort_dir='desc', filters=search_opts,
|
|
viewable_admin_meta=True)
|
|
|
|
volumes = [dict(vol.iteritems()) for vol in volumes]
|
|
|
|
for volume in volumes:
|
|
utils.add_visible_admin_metadata(volume)
|
|
|
|
limited_list = common.limited(volumes, req)
|
|
req.cache_db_volumes(limited_list)
|
|
|
|
res = [entity_maker(context, vol) for vol in limited_list]
|
|
return {'volumes': res}
|
|
|
|
def _image_uuid_from_href(self, image_href):
|
|
# If the image href was generated by nova api, strip image_href
|
|
# down to an id.
|
|
try:
|
|
image_uuid = image_href.split('/').pop()
|
|
except (TypeError, AttributeError):
|
|
msg = _("Invalid imageRef provided.")
|
|
raise exc.HTTPBadRequest(explanation=msg)
|
|
|
|
if not uuidutils.is_uuid_like(image_uuid):
|
|
msg = _("Invalid imageRef provided.")
|
|
raise exc.HTTPBadRequest(explanation=msg)
|
|
|
|
return image_uuid
|
|
|
|
@wsgi.serializers(xml=VolumeTemplate)
|
|
@wsgi.deserializers(xml=CreateDeserializer)
|
|
def create(self, req, body):
|
|
"""Creates a new volume."""
|
|
if not self.is_valid_body(body, 'volume'):
|
|
raise exc.HTTPUnprocessableEntity()
|
|
|
|
LOG.debug('Create volume request body: %s', body)
|
|
context = req.environ['cinder.context']
|
|
volume = body['volume']
|
|
|
|
kwargs = {}
|
|
|
|
req_volume_type = volume.get('volume_type', None)
|
|
if req_volume_type:
|
|
try:
|
|
if not uuidutils.is_uuid_like(req_volume_type):
|
|
kwargs['volume_type'] = \
|
|
volume_types.get_volume_type_by_name(
|
|
context, req_volume_type)
|
|
else:
|
|
kwargs['volume_type'] = volume_types.get_volume_type(
|
|
context, req_volume_type)
|
|
except exception.VolumeTypeNotFound:
|
|
explanation = 'Volume type not found.'
|
|
raise exc.HTTPNotFound(explanation=explanation)
|
|
|
|
kwargs['metadata'] = volume.get('metadata', None)
|
|
|
|
snapshot_id = volume.get('snapshot_id')
|
|
if snapshot_id is not None:
|
|
try:
|
|
kwargs['snapshot'] = self.volume_api.get_snapshot(context,
|
|
snapshot_id)
|
|
except exception.NotFound:
|
|
explanation = _('snapshot id:%s not found') % snapshot_id
|
|
raise exc.HTTPNotFound(explanation=explanation)
|
|
|
|
else:
|
|
kwargs['snapshot'] = None
|
|
|
|
source_volid = volume.get('source_volid')
|
|
if source_volid is not None:
|
|
try:
|
|
kwargs['source_volume'] = \
|
|
self.volume_api.get_volume(context,
|
|
source_volid)
|
|
except exception.NotFound:
|
|
explanation = _('source vol id:%s not found') % source_volid
|
|
raise exc.HTTPNotFound(explanation=explanation)
|
|
else:
|
|
kwargs['source_volume'] = None
|
|
|
|
size = volume.get('size', None)
|
|
if size is None and kwargs['snapshot'] is not None:
|
|
size = kwargs['snapshot']['volume_size']
|
|
elif size is None and kwargs['source_volume'] is not None:
|
|
size = kwargs['source_volume']['size']
|
|
|
|
LOG.info(_LI("Create volume of %s GB"), size, context=context)
|
|
|
|
image_href = None
|
|
image_uuid = None
|
|
if self.ext_mgr.is_loaded('os-image-create'):
|
|
# NOTE(jdg): misleading name "imageRef" as it's an image-id
|
|
image_href = volume.get('imageRef')
|
|
if image_href is not None:
|
|
image_uuid = self._image_uuid_from_href(image_href)
|
|
kwargs['image_id'] = image_uuid
|
|
|
|
kwargs['availability_zone'] = volume.get('availability_zone', None)
|
|
|
|
new_volume = self.volume_api.create(context,
|
|
size,
|
|
volume.get('display_name'),
|
|
volume.get('display_description'),
|
|
**kwargs)
|
|
|
|
# TODO(vish): Instance should be None at db layer instead of
|
|
# trying to lazy load, but for now we turn it into
|
|
# a dict to avoid an error.
|
|
new_volume = dict(new_volume.iteritems())
|
|
|
|
retval = _translate_volume_detail_view(context, new_volume, image_uuid)
|
|
|
|
return {'volume': retval}
|
|
|
|
def _get_volume_search_options(self):
|
|
"""Return volume search options allowed by non-admin."""
|
|
return ('display_name', 'status', 'metadata')
|
|
|
|
@wsgi.serializers(xml=VolumeTemplate)
|
|
def update(self, req, id, body):
|
|
"""Update a volume."""
|
|
context = req.environ['cinder.context']
|
|
|
|
if not body:
|
|
raise exc.HTTPUnprocessableEntity()
|
|
|
|
if 'volume' not in body:
|
|
raise exc.HTTPUnprocessableEntity()
|
|
|
|
volume = body['volume']
|
|
update_dict = {}
|
|
|
|
valid_update_keys = (
|
|
'display_name',
|
|
'display_description',
|
|
'metadata',
|
|
)
|
|
|
|
for key in valid_update_keys:
|
|
if key in volume:
|
|
update_dict[key] = volume[key]
|
|
|
|
try:
|
|
volume = self.volume_api.get(context, id, viewable_admin_meta=True)
|
|
volume_utils.notify_about_volume_usage(context, volume,
|
|
'update.start')
|
|
self.volume_api.update(context, volume, update_dict)
|
|
except exception.NotFound:
|
|
raise exc.HTTPNotFound()
|
|
|
|
volume.update(update_dict)
|
|
|
|
utils.add_visible_admin_metadata(volume)
|
|
|
|
volume_utils.notify_about_volume_usage(context, volume,
|
|
'update.end')
|
|
|
|
return {'volume': _translate_volume_detail_view(context, volume)}
|
|
|
|
|
|
def create_resource(ext_mgr):
|
|
return wsgi.Resource(VolumeController(ext_mgr))
|