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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (c) 2011 Zadara Storage Inc.
# Copyright (c) 2011 OpenStack LLC.
# Copyright 2010 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# Copyright (c) 2010 Citrix Systems, Inc.
# Copyright 2011 Ken Pepple
#
# 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.
"""Built-in volume type properties."""
from nova import context
from nova import db
from nova import exception
from nova import flags
from nova import log as logging
FLAGS = flags.FLAGS
LOG = logging.getLogger('nova.volume.volume_types')
def create(context, name, extra_specs={}):
"""Creates volume types."""
try:
db.volume_type_create(context,
dict(name=name,
extra_specs=extra_specs))
except exception.DBError, e:
LOG.exception(_('DB error: %s') % e)
raise exception.ApiError(_("Cannot create volume_type with "
"name %(name)s and specs %(extra_specs)s")
% locals())
def destroy(context, name):
"""Marks volume types as deleted."""
if name is None:
raise exception.InvalidVolumeType(volume_type=name)
else:
try:
db.volume_type_destroy(context, name)
except exception.NotFound:
LOG.exception(_('Volume type %s not found for deletion') % name)
raise exception.ApiError(_("Unknown volume type: %s") % name)
def purge(context, name):
"""Removes volume types from database."""
if name is None:
raise exception.InvalidVolumeType(volume_type=name)
else:
try:
db.volume_type_purge(context, name)
except exception.NotFound:
LOG.exception(_('Volume type %s not found for purge') % name)
raise exception.ApiError(_("Unknown volume type: %s") % name)
def get_all_types(context, inactive=0, search_opts={}):
"""Get all non-deleted volume_types.
Pass true as argument if you want deleted volume types returned also.
"""
vol_types = db.volume_type_get_all(context, inactive)
if search_opts:
LOG.debug(_("Searching by: %s") % str(search_opts))
def _check_extra_specs_match(vol_type, searchdict):
for k, v in searchdict.iteritems():
if k not in vol_type['extra_specs'].keys()\
or vol_type['extra_specs'][k] != v:
return False
return True
# search_option to filter_name mapping.
filter_mapping = {'extra_specs': _check_extra_specs_match}
result = {}
for type_name, type_args in vol_types.iteritems():
# go over all filters in the list
for opt, values in search_opts.iteritems():
try:
filter_func = filter_mapping[opt]
except KeyError:
# no such filter - ignore it, go to next filter
continue
else:
if filter_func(type_args, values):
# if one of conditions didn't match - remove
result[type_name] = type_args
break
vol_types = result
return vol_types
def get_volume_type(context, id):
"""Retrieves single volume type by id."""
if id is None:
raise exception.InvalidVolumeType(volume_type=id)
try:
return db.volume_type_get(context, id)
except exception.DBError:
raise exception.ApiError(_("Unknown volume type: %s") % id)
def get_volume_type_by_name(context, name):
"""Retrieves single volume type by name."""
if name is None:
raise exception.InvalidVolumeType(volume_type=name)
try:
return db.volume_type_get_by_name(context, name)
except exception.DBError:
raise exception.ApiError(_("Unknown volume type: %s") % name)
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