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#
# Copyright 2012 eNovance
#
# Author: Guillaume Pernot <gpernot@praksys.org>
#
# 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.
"""Common code for working with object stores
"""
from __future__ import absolute_import
from keystoneclient import exceptions
from oslo.config import cfg
from oslo.utils import timeutils
import six.moves.urllib.parse as urlparse
from swiftclient import client as swift
from ceilometer.central import plugin
from ceilometer.openstack.common.gettextutils import _
from ceilometer.openstack.common import log
from ceilometer import sample
LOG = log.getLogger(__name__)
OPTS = [
cfg.StrOpt('reseller_prefix',
default='AUTH_',
help="Swift reseller prefix. Must be on par with "
"reseller_prefix in proxy-server.conf."),
]
cfg.CONF.register_opts(OPTS)
class _Base(plugin.CentralPollster):
METHOD = 'head'
_ENDPOINT = None
@property
def default_discovery(self):
return 'tenant'
@property
def CACHE_KEY_METHOD(self):
return 'swift.%s_account' % self.METHOD
@staticmethod
def _get_endpoint(ksclient):
# we store the endpoint as a base class attribute, so keystone is
# only ever called once
if _Base._ENDPOINT is None:
try:
endpoint_type = cfg.CONF.service_credentials.os_endpoint_type
endpoint = ksclient.service_catalog.url_for(
service_type='object-store',
endpoint_type=endpoint_type)
_Base._ENDPOINT = endpoint
except exceptions.EndpointNotFound:
LOG.debug(_("Swift endpoint not found"))
return _Base._ENDPOINT
def _iter_accounts(self, ksclient, cache, tenants):
if self.CACHE_KEY_METHOD not in cache:
cache[self.CACHE_KEY_METHOD] = list(self._get_account_info(
ksclient, tenants))
return iter(cache[self.CACHE_KEY_METHOD])
def _get_account_info(self, ksclient, tenants):
endpoint = self._get_endpoint(ksclient)
if not endpoint:
raise StopIteration()
for t in tenants:
api_method = '%s_account' % self.METHOD
yield (t.id, getattr(swift, api_method)
(self._neaten_url(endpoint, t.id),
ksclient.auth_token))
@staticmethod
def _neaten_url(endpoint, tenant_id):
"""Transform the registered url to standard and valid format."""
return urlparse.urljoin(endpoint.split('/v1')[0].rstrip('/') + '/',
'v1/' + cfg.CONF.reseller_prefix + tenant_id)
class ObjectsPollster(_Base):
"""Iterate over all accounts, using keystone."""
def get_samples(self, manager, cache, resources):
tenants = resources
for tenant, account in self._iter_accounts(manager.keystone,
cache, tenants):
yield sample.Sample(
name='storage.objects',
type=sample.TYPE_GAUGE,
volume=int(account['x-account-object-count']),
unit='object',
user_id=None,
project_id=tenant,
resource_id=tenant,
timestamp=timeutils.isotime(),
resource_metadata=None,
)
class ObjectsSizePollster(_Base):
"""Iterate over all accounts, using keystone."""
def get_samples(self, manager, cache, resources):
tenants = resources
for tenant, account in self._iter_accounts(manager.keystone,
cache, tenants):
yield sample.Sample(
name='storage.objects.size',
type=sample.TYPE_GAUGE,
volume=int(account['x-account-bytes-used']),
unit='B',
user_id=None,
project_id=tenant,
resource_id=tenant,
timestamp=timeutils.isotime(),
resource_metadata=None,
)
class ObjectsContainersPollster(_Base):
"""Iterate over all accounts, using keystone."""
def get_samples(self, manager, cache, resources):
tenants = resources
for tenant, account in self._iter_accounts(manager.keystone,
cache, tenants):
yield sample.Sample(
name='storage.objects.containers',
type=sample.TYPE_GAUGE,
volume=int(account['x-account-container-count']),
unit='container',
user_id=None,
project_id=tenant,
resource_id=tenant,
timestamp=timeutils.isotime(),
resource_metadata=None,
)
class ContainersObjectsPollster(_Base):
"""Get info about containers using Swift API."""
METHOD = 'get'
def get_samples(self, manager, cache, resources):
tenants = resources
for tenant, account in self._iter_accounts(manager.keystone,
cache, tenants):
containers_info = account[1]
for container in containers_info:
yield sample.Sample(
name='storage.containers.objects',
type=sample.TYPE_GAUGE,
volume=int(container['count']),
unit='object',
user_id=None,
project_id=tenant,
resource_id=tenant + '/' + container['name'],
timestamp=timeutils.isotime(),
resource_metadata=None,
)
class ContainersSizePollster(_Base):
"""Get info about containers using Swift API."""
METHOD = 'get'
def get_samples(self, manager, cache, resources):
tenants = resources
for tenant, account in self._iter_accounts(manager.keystone,
cache, tenants):
containers_info = account[1]
for container in containers_info:
yield sample.Sample(
name='storage.containers.objects.size',
type=sample.TYPE_GAUGE,
volume=int(container['bytes']),
unit='B',
user_id=None,
project_id=tenant,
resource_id=tenant + '/' + container['name'],
timestamp=timeutils.isotime(),
resource_metadata=None,
)
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