73830387c6
Moved the metric mappings for Ceilormeter, Gnocchi & Monasca out of base.py. The datasources manager now uses classes extending base.py their NAME attribute as key in the dictionary of total available mappings and datasources. base.py still contains a template definition of all available mappings so that anyone extending the base class can identify all the possible endpoints they can map to. Change-Id: I6a826423031b5a6a60c4cd5fe24f74b8400f6b55 Closes-Bug: #1815769
78 lines
2.5 KiB
Python
78 lines
2.5 KiB
Python
# -*- encoding: utf-8 -*-
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# Copyright 2017 NEC Corporation
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from watcher.common import exception
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from watcher.datasource import ceilometer as ceil
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from watcher.datasource import gnocchi as gnoc
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from watcher.datasource import monasca as mon
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class DataSourceManager(object):
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def __init__(self, config=None, osc=None):
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self.osc = osc
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self.config = config
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self._ceilometer = None
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self._monasca = None
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self._gnocchi = None
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self.metric_map = {
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mon.MonascaHelper.NAME: mon.MonascaHelper.METRIC_MAP,
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gnoc.GnocchiHelper.NAME: gnoc.GnocchiHelper.METRIC_MAP,
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ceil.CeilometerHelper.NAME: ceil.CeilometerHelper.METRIC_MAP
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}
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self.datasources = self.config.datasources
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@property
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def ceilometer(self):
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if self._ceilometer is None:
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self.ceilometer = ceil.CeilometerHelper(osc=self.osc)
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return self._ceilometer
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@ceilometer.setter
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def ceilometer(self, ceilometer):
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self._ceilometer = ceilometer
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@property
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def monasca(self):
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if self._monasca is None:
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self._monasca = mon.MonascaHelper(osc=self.osc)
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return self._monasca
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@monasca.setter
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def monasca(self, monasca):
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self._monasca = monasca
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@property
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def gnocchi(self):
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if self._gnocchi is None:
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self._gnocchi = gnoc.GnocchiHelper(osc=self.osc)
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return self._gnocchi
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@gnocchi.setter
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def gnocchi(self, gnocchi):
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self._gnocchi = gnocchi
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def get_backend(self, metrics):
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for datasource in self.datasources:
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no_metric = False
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for metric in metrics:
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if (metric not in self.metric_map[datasource] or
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self.metric_map[datasource].get(metric) is None):
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no_metric = True
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break
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if not no_metric:
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return getattr(self, datasource)
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raise exception.NoSuchMetric()
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