Source code for ceilometer.compute.pollsters.memory

# Copyright (c) 2014 VMware, Inc.
# All Rights Reserved.
#
#    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 ceilometer
from ceilometer.compute import plugin
from ceilometer.compute.pollsters import util
from ceilometer.compute.virt import inspector as virt_inspector
from ceilometer.openstack.common.gettextutils import _
from ceilometer.openstack.common import log
from ceilometer import sample

LOG = log.getLogger(__name__)


[docs]class MemoryUsagePollster(plugin.ComputePollster):
[docs] def get_samples(self, manager, cache, resources): self._inspection_duration = self._record_poll_time() for instance in resources: LOG.debug(_('Checking memory usage for instance %s'), instance.id) try: memory_info = manager.inspector.inspect_memory_usage( instance, self._inspection_duration) LOG.debug(_("MEMORY USAGE: %(instance)s %(usage)f"), ({'instance': instance.__dict__, 'usage': memory_info.usage})) yield util.make_sample_from_instance( instance, name='memory.usage', type=sample.TYPE_GAUGE, unit='MB', volume=memory_info.usage, ) except virt_inspector.InstanceNotFoundException as err: # Instance was deleted while getting samples. Ignore it. LOG.debug(_('Exception while getting samples %s'), err) except ceilometer.NotImplementedError: # Selected inspector does not implement this pollster. LOG.debug(_('Obtaining Memory Usage is not implemented for %s' ), manager.inspector.__class__.__name__) except Exception as err: LOG.exception(_('Could not get Memory Usage for ' '%(id)s: %(e)s'), {'id': instance.id, 'e': err})