0e01da763a
Ceilometer compute agent dies if nova client raises an exception while it is retrieving server instances. This might happen e.g. when some OpenStack API is temporarily unavailable Fixes LP Bug #1218889 Change-Id: I808dcfae18d23240f8e095d6c97c8dede7dede8f
101 lines
3.4 KiB
Python
101 lines
3.4 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Copyright © 2012-2013 eNovance <licensing@enovance.com>
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#
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# Author: Julien Danjou <julien@danjou.info>
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from oslo.config import cfg
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from stevedore import extension
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from ceilometer import agent
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from ceilometer.compute.virt import inspector as virt_inspector
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from ceilometer import nova_client
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from ceilometer.openstack.common import log
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from ceilometer.openstack.common import service as os_service
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from ceilometer.openstack.common.rpc import service as rpc_service
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from ceilometer import service
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LOG = log.getLogger(__name__)
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class PollingTask(agent.PollingTask):
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def poll_and_publish_instances(self, instances):
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with self.publish_context as publisher:
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for instance in instances:
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if getattr(instance, 'OS-EXT-STS:vm_state', None) == 'error':
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continue
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cache = {}
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for pollster in self.pollsters:
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try:
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LOG.info("Polling pollster %s", pollster.name)
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samples = list(pollster.obj.get_samples(
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self.manager,
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cache,
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instance,
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))
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publisher(samples)
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except Exception as err:
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LOG.warning('Continue after error from %s: %s',
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pollster.name, err)
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LOG.exception(err)
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def poll_and_publish(self):
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try:
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instances = self.manager.nv.instance_get_all_by_host(cfg.CONF.host)
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except Exception as err:
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LOG.exception('Unable to retrieve instances: %s', err)
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else:
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self.poll_and_publish_instances(instances)
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class AgentManager(agent.AgentManager):
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def __init__(self):
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super(AgentManager, self).__init__(
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extension.ExtensionManager(
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namespace='ceilometer.poll.compute',
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invoke_on_load=True,
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),
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)
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self._inspector = virt_inspector.get_hypervisor_inspector()
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self.nv = nova_client.Client()
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def create_polling_task(self):
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return PollingTask(self)
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def setup_notifier_task(self):
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"""For nova notifier usage."""
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task = PollingTask(self)
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for pollster in self.pollster_manager.extensions:
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task.add(
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pollster,
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self.pipeline_manager.pipelines)
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self.notifier_task = task
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def poll_instance(self, context, instance):
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"""Poll one instance."""
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self.notifier_task.poll_and_publish_instances([instance])
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@property
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def inspector(self):
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return self._inspector
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def agent_compute():
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service.prepare_service()
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os_service.launch(rpc_service.Service(cfg.CONF.host,
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'ceilometer.agent.compute',
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AgentManager())).wait()
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