56 lines
2.5 KiB
Python
56 lines
2.5 KiB
Python
# Copyright (c) 2014 VMware, Inc.
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# All Rights Reserved.
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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 ceilometer.compute import plugin
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from ceilometer.compute.pollsters import util
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from ceilometer.compute.virt import inspector as virt_inspector
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from ceilometer.openstack.common.gettextutils import _
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from ceilometer.openstack.common import log
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from ceilometer import sample
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LOG = log.getLogger(__name__)
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class MemoryUsagePollster(plugin.ComputePollster):
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def get_samples(self, manager, cache, resources):
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self._inspection_duration = self._record_poll_time()
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for instance in resources:
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LOG.debug(_('Checking memory usage for instance %s'), instance.id)
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try:
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memory_info = manager.inspector.inspect_memory_usage(
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instance, self._inspection_duration)
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LOG.debug(_("MEMORY USAGE: %(instance)s %(usage)f"),
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({'instance': instance.__dict__,
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'usage': memory_info.usage}))
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yield util.make_sample_from_instance(
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instance,
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name='memory.usage',
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type=sample.TYPE_GAUGE,
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unit='MB',
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volume=memory_info.usage,
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)
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except virt_inspector.InstanceNotFoundException as err:
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# Instance was deleted while getting samples. Ignore it.
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LOG.debug(_('Exception while getting samples %s'), err)
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except NotImplementedError:
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# Selected inspector does not implement this pollster.
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LOG.debug(_('Obtaining Memory Usage is not implemented for %s'
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), manager.inspector.__class__.__name__)
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except Exception as err:
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LOG.exception(_('Could not get Memory Usage for '
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'%(id)s: %(e)s'), {'id': instance.id,
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'e': err})
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