# Copyright (c) 2017 RedHat, Inc.
#
# 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 copy
import glance_store as g_store
from oslo_config import cfg
from oslo_log import log as logging
import oslo_serialization.jsonutils as json
import webob.exc
from glance.api import policy
from glance.api.v2 import policy as api_policy
from glance.common import exception
from glance.common import wsgi
import glance.db
from glance.i18n import _
from glance.quota import keystone as ks_quota
CONF = cfg.CONF
LOG = logging.getLogger(__name__)
[docs]
class InfoController(object):
def __init__(self, policy_enforcer=None):
self.policy = policy_enforcer or policy.Enforcer()
[docs]
def get_image_import(self, req):
# TODO(jokke): All the rest of the boundaries should be implemented.
import_methods = {
'description': 'Import methods available.',
'type': 'array',
'value': CONF.get('enabled_import_methods')
}
return {
'import-methods': import_methods
}
[docs]
def get_stores(self, req):
# TODO(abhishekk): This will be removed after config options
# 'stores' and 'default_store' are removed.
enabled_backends = CONF.enabled_backends
if not enabled_backends:
msg = _("Multi backend is not supported at this site.")
raise webob.exc.HTTPNotFound(explanation=msg)
backends = []
for backend in enabled_backends:
if backend.startswith("os_glance_"):
continue
stores = {}
stores['id'] = backend
description = getattr(CONF, backend).store_description
if description:
stores['description'] = description
if backend == CONF.glance_store.default_backend:
stores['default'] = "true"
# Check if http store is configured then mark it as read-only
if enabled_backends[backend] == 'http':
stores['read-only'] = "true"
backends.append(stores)
return {'stores': backends}
@staticmethod
def _get_rbd_properties(store_detail):
return {
'chunk_size': store_detail.chunk_size,
'pool': store_detail.pool,
'thin_provisioning': store_detail.thin_provisioning
}
@staticmethod
def _get_file_properties(store_detail):
return {
'data_dir': store_detail.datadir,
'chunk_size': store_detail.chunk_size,
'thin_provisioning': store_detail.thin_provisioning
}
@staticmethod
def _get_cinder_properties(store_detail):
return {
'volume_type': store_detail.store_conf.cinder_volume_type,
'use_multipath': store_detail.store_conf.cinder_use_multipath
}
@staticmethod
def _get_swift_properties(store_detail):
return {
'container': store_detail.container,
'large_object_size': store_detail.large_object_size,
'large_object_chunk_size': store_detail.large_object_chunk_size
}
@staticmethod
def _get_s3_properties(store_detail):
return {
's3_store_large_object_size':
store_detail.s3_store_large_object_size,
's3_store_large_object_chunk_size':
store_detail.s3_store_large_object_chunk_size,
's3_store_thread_pools':
store_detail.s3_store_thread_pools
}
@staticmethod
def _get_http_properties(store_detail):
# NOTE(mrjoshi): Thre are no useful properties
# to be exposed.
return {}
[docs]
def get_stores_detail(self, req):
enabled_backends = CONF.enabled_backends
stores = self.get_stores(req).get('stores')
try:
api_policy.DiscoveryAPIPolicy(
req.context,
enforcer=self.policy).stores_info_detail()
store_mapper = {
'rbd': self._get_rbd_properties,
'file': self._get_file_properties,
'cinder': self._get_cinder_properties,
'swift': self._get_swift_properties,
's3': self._get_s3_properties,
'http': self._get_http_properties
}
for store in stores:
store_type = enabled_backends[store['id']]
store['type'] = store_type
store_detail = g_store.get_store_from_store_identifier(
store['id'])
store['properties'] = store_mapper.get(store_type)(
store_detail)
store['weight'] = getattr(CONF, store['id']).weight
except exception.Forbidden as e:
LOG.debug("User not permitted to view details")
raise webob.exc.HTTPForbidden(explanation=e.msg)
return {'stores': stores}
[docs]
def get_usage(self, req):
project_usage = ks_quota.get_usage(req.context)
return {'usage':
{name: {'usage': usage.usage,
'limit': usage.limit}
for name, usage in project_usage.items()}}
[docs]
class ResponseSerializer(wsgi.JSONResponseSerializer):
def __init__(self, usage_schema=None):
super(ResponseSerializer, self).__init__()
self.schema = usage_schema or get_usage_schema()
[docs]
def get_usage(self, response, usage):
body = json.dumps(self.schema.filter(usage), ensure_ascii=False)
response.unicode_body = str(body)
response.content_type = 'application/json'
_USAGE_SCHEMA = {
'usage': {
'type': 'array',
'items': {
'type': 'object',
'additionalProperties': True,
'validation_data': {
'type': 'object',
'additonalProperties': False,
'properties': {
'usage': {'type': 'integer'},
'limit': {'type': 'integer'},
},
},
},
},
}
[docs]
def get_usage_schema():
return glance.schema.Schema('usage', copy.deepcopy(_USAGE_SCHEMA))
[docs]
def create_resource():
usage_schema = get_usage_schema()
serializer = ResponseSerializer(usage_schema)
return wsgi.Resource(InfoController(), None, serializer)
