Container Infrastructure Management Service for OpenStack
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# Copyright 2013 Red Hat, 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.
import ast
import jsonpatch
from oslo_utils import uuidutils
import pecan
import wsme
from magnum.common import exception
from magnum.common import utils
import magnum.conf
from magnum.i18n import _
from magnum import objects
CONF = magnum.conf.CONF
JSONPATCH_EXCEPTIONS = (jsonpatch.JsonPatchException,
jsonpatch.JsonPointerException,
KeyError)
DOCKER_MINIMUM_MEMORY = 4 * 1024 * 1024
def validate_limit(limit):
if limit is not None and limit <= 0:
raise wsme.exc.ClientSideError(_("Limit must be positive"))
if limit is not None:
return min(CONF.api.max_limit, limit)
else:
return CONF.api.max_limit
def validate_sort_dir(sort_dir):
if sort_dir not in ['asc', 'desc']:
raise wsme.exc.ClientSideError(_("Invalid sort direction: %s. "
"Acceptable values are "
"'asc' or 'desc'") % sort_dir)
return sort_dir
def validate_docker_memory(mem_str):
"""Docker require that Minimum memory limit >= 4M."""
try:
mem = utils.get_docker_quantity(mem_str)
except exception.UnsupportedDockerQuantityFormat:
raise wsme.exc.ClientSideError(_("Invalid docker memory specified. "
"Acceptable values are format: "
"<number>[<unit>],"
"where unit = b, k, m or g"))
if mem < DOCKER_MINIMUM_MEMORY:
raise wsme.exc.ClientSideError(_("Docker Minimum memory limit "
"allowed is %d B.")
% DOCKER_MINIMUM_MEMORY)
def apply_jsonpatch(doc, patch):
for p in patch:
if p['op'] == 'add' and p['path'].count('/') == 1:
attr = p['path'].lstrip('/')
if attr not in doc:
msg = _("Adding a new attribute %s to the root of "
"the resource is not allowed.") % p['path']
raise wsme.exc.ClientSideError(msg)
if doc[attr] is not None:
msg = _("The attribute %s has existed, please use "
"'replace' operation instead.") % p['path']
raise wsme.exc.ClientSideError(msg)
if p['op'] == 'replace' and p['path'] == '/labels':
try:
val = p['value']
dict_val = val if type(val) == dict else ast.literal_eval(val)
p['value'] = dict_val
except (SyntaxError, ValueError, AssertionError) as e:
raise exception.PatchError(patch=patch, reason=e)
return jsonpatch.apply_patch(doc, patch)
def get_resource(resource, resource_ident):
"""Get the resource from the uuid or logical name.
:param resource: the resource type.
:param resource_ident: the UUID or logical name of the resource.
:returns: The resource.
"""
resource = getattr(objects, resource)
if uuidutils.is_uuid_like(resource_ident):
return resource.get_by_uuid(pecan.request.context, resource_ident)
return resource.get_by_name(pecan.request.context, resource_ident)
def get_openstack_resource(manager, resource_ident, resource_type):
"""Get the openstack resource from the uuid or logical name.
:param manager: the resource manager class.
:param resource_ident: the UUID or logical name of the resource.
:param resource_type: the type of the resource
:returns: The openstack resource.
:raises: ResourceNotFound if the openstack resource is not exist.
Conflict if multi openstack resources have same name.
"""
if uuidutils.is_uuid_like(resource_ident):
resource_data = manager.get(resource_ident)
else:
filters = {'name': resource_ident}
matches = list(manager.list(filters=filters))
if len(matches) == 0:
raise exception.ResourceNotFound(name=resource_type,
id=resource_ident)
if len(matches) > 1:
msg = ("Multiple %(resource_type)s exist with same name "
"%(resource_ident)s. Please use the resource id "
"instead." % {'resource_type': resource_type,
'resource_ident': resource_ident})
raise exception.Conflict(msg)
resource_data = matches[0]
return resource_data