ceilometer/ceilometer/central/discovery.py

63 lines
2.2 KiB
Python

#
# Copyright 2014 Red Hat, Inc
#
# Author: Nejc Saje <nsaje@redhat.com>
#
# 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.
from oslo.config import cfg
from ceilometer.openstack.common.gettextutils import _LW
from ceilometer.openstack.common import log
from ceilometer import plugin
LOG = log.getLogger(__name__)
cfg.CONF.import_group('service_credentials', 'ceilometer.service')
class EndpointDiscovery(plugin.DiscoveryBase):
"""Discovery that supplies service endpoints.
This discovery should be used when the relevant APIs are not well suited
to dividing the pollster's work into smaller pieces than a whole service
at once. Example of this is the floating_ip pollster which calls
nova.floating_ips.list() and therefore gets all floating IPs at once.
"""
def discover(self, manager, param=None):
if not param:
return []
endpoints = manager.keystone.service_catalog.get_urls(
service_type=param,
endpoint_type=cfg.CONF.service_credentials.os_endpoint_type,
region_name=cfg.CONF.service_credentials.os_region_name)
if not endpoints:
LOG.warning(_LW('No endpoints found for service %s'), param)
return []
else:
return endpoints
class TenantDiscovery(plugin.DiscoveryBase):
"""Discovery that supplies keystone tenants.
This discovery should be used when the pollster's work can't be divided
into smaller pieces than per-tenant. Example of this is the Swift
pollster, which polls account details and does so per-tenant.
"""
def discover(self, manager, param=None):
tenants = manager.keystone.tenants.list()
return tenants or []