c7f12a4224
oslo.utils 1.2.0 has changed its namespace from oslo.utils to oslo_utils, the old import style of oslo.utils still can work but it is deprecated. Change-Id: I8832259624f15a8040f6de35136db7dd6d217f02
52 lines
1.6 KiB
Python
52 lines
1.6 KiB
Python
# Copyright 2014 Mirantis, Inc.
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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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import abc
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from oslo_utils import timeutils
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import six
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from ceilometer.agent import plugin_base
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from ceilometer.compute.virt import inspector as virt_inspector
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@six.add_metaclass(abc.ABCMeta)
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class BaseComputePollster(plugin_base.PollsterBase):
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@property
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def inspector(self):
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try:
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inspector = self._inspector
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except AttributeError:
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inspector = virt_inspector.get_hypervisor_inspector()
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BaseComputePollster._inspector = inspector
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return inspector
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@property
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def default_discovery(self):
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return 'local_instances'
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def _record_poll_time(self):
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"""Method records current time as the poll time.
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:return: time in seconds since the last poll time was recorded
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"""
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current_time = timeutils.utcnow()
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duration = None
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if hasattr(self, '_last_poll_time'):
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duration = timeutils.delta_seconds(self._last_poll_time,
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current_time)
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self._last_poll_time = current_time
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return duration
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