# 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.
from oslo_log import log
import ceilometer
from ceilometer.compute import pollsters
from ceilometer.compute.pollsters import util
from ceilometer.compute.virt import inspector as virt_inspector
from ceilometer.i18n import _, _LE, _LW
from ceilometer import sample
LOG = log.getLogger(__name__)
[docs]class MemoryUsagePollster(pollsters.BaseComputePollster):
[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 = self.inspector.inspect_memory_usage(
instance, self._inspection_duration)
LOG.debug("MEMORY USAGE: %(instance)s %(usage)f",
{'instance': instance,
'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 virt_inspector.InstanceShutOffException as e:
LOG.debug('Instance %(instance_id)s was shut off while '
'getting samples of %(pollster)s: %(exc)s',
{'instance_id': instance.id,
'pollster': self.__class__.__name__, 'exc': e})
except virt_inspector.NoDataException as e:
LOG.warning(_LW('Cannot inspect data of %(pollster)s for '
'%(instance_id)s, non-fatal reason: %(exc)s'),
{'pollster': self.__class__.__name__,
'instance_id': instance.id, 'exc': e})
except ceilometer.NotImplementedError:
# Selected inspector does not implement this pollster.
LOG.debug('Obtaining Memory Usage is not implemented for %s',
self.inspector.__class__.__name__)
except Exception as err:
LOG.exception(_('Could not get Memory Usage for '
'%(id)s: %(e)s'), {'id': instance.id,
'e': err})
[docs]class MemoryResidentPollster(pollsters.BaseComputePollster):
[docs] def get_samples(self, manager, cache, resources):
self._inspection_duration = self._record_poll_time()
for instance in resources:
LOG.debug('Checking resident memory for instance %s',
instance.id)
try:
memory_info = self.inspector.inspect_memory_resident(
instance, self._inspection_duration)
LOG.debug("RESIDENT MEMORY: %(instance)s %(resident)f",
{'instance': instance,
'resident': memory_info.resident})
yield util.make_sample_from_instance(
instance,
name='memory.resident',
type=sample.TYPE_GAUGE,
unit='MB',
volume=memory_info.resident,
)
except virt_inspector.InstanceNotFoundException as err:
# Instance was deleted while getting samples. Ignore it.
LOG.debug('Exception while getting samples %s', err)
except virt_inspector.InstanceShutOffException as e:
LOG.debug('Instance %(instance_id)s was shut off while '
'getting samples of %(pollster)s: %(exc)s',
{'instance_id': instance.id,
'pollster': self.__class__.__name__, 'exc': e})
except virt_inspector.NoDataException as e:
LOG.warning(_LW('Cannot inspect data of %(pollster)s for '
'%(instance_id)s, non-fatal reason: %(exc)s'),
{'pollster': self.__class__.__name__,
'instance_id': instance.id, 'exc': e})
except ceilometer.NotImplementedError:
# Selected inspector does not implement this pollster.
LOG.debug('Obtaining Resident Memory is not implemented'
' for %s', self.inspector.__class__.__name__)
except Exception as err:
LOG.exception(_LE('Could not get Resident Memory Usage for '
'%(id)s: %(e)s'), {'id': instance.id,
'e': err})