aodh/ceilometer/compute/manager.py
Lianhao Lu 0e26faeb69 Corrected import order
Enabled H306 in tox.ini and corrected the import order.

Change-Id: If77984e8c62b0ec0cfb3d068e9c1b0d4d7c3583d
2013-11-13 14:41:33 +08:00

101 lines
3.4 KiB
Python

# -*- encoding: utf-8 -*-
#
# Copyright © 2012-2013 eNovance <licensing@enovance.com>
#
# Author: Julien Danjou <julien@danjou.info>
#
# 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 stevedore import extension
from ceilometer import agent
from ceilometer.compute.virt import inspector as virt_inspector
from ceilometer import nova_client
from ceilometer.openstack.common import log
from ceilometer.openstack.common.rpc import service as rpc_service
from ceilometer.openstack.common import service as os_service
from ceilometer import service
LOG = log.getLogger(__name__)
class PollingTask(agent.PollingTask):
def poll_and_publish_instances(self, instances):
with self.publish_context as publisher:
for instance in instances:
if getattr(instance, 'OS-EXT-STS:vm_state', None) == 'error':
continue
cache = {}
for pollster in self.pollsters:
try:
LOG.info("Polling pollster %s", pollster.name)
samples = list(pollster.obj.get_samples(
self.manager,
cache,
instance,
))
publisher(samples)
except Exception as err:
LOG.warning('Continue after error from %s: %s',
pollster.name, err)
LOG.exception(err)
def poll_and_publish(self):
try:
instances = self.manager.nv.instance_get_all_by_host(cfg.CONF.host)
except Exception as err:
LOG.exception('Unable to retrieve instances: %s', err)
else:
self.poll_and_publish_instances(instances)
class AgentManager(agent.AgentManager):
def __init__(self):
super(AgentManager, self).__init__(
extension.ExtensionManager(
namespace='ceilometer.poll.compute',
invoke_on_load=True,
),
)
self._inspector = virt_inspector.get_hypervisor_inspector()
self.nv = nova_client.Client()
def create_polling_task(self):
return PollingTask(self)
def setup_notifier_task(self):
"""For nova notifier usage."""
task = PollingTask(self)
for pollster in self.pollster_manager.extensions:
task.add(
pollster,
self.pipeline_manager.pipelines)
self.notifier_task = task
def poll_instance(self, context, instance):
"""Poll one instance."""
self.notifier_task.poll_and_publish_instances([instance])
@property
def inspector(self):
return self._inspector
def agent_compute():
service.prepare_service()
os_service.launch(rpc_service.Service(cfg.CONF.host,
'ceilometer.agent.compute',
AgentManager())).wait()