68 lines
1.8 KiB
Python
68 lines
1.8 KiB
Python
# Copyright 2015 Huawei Technologies Co.,LTD.
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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
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# 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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import abc
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from oslo_log import log
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import six
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from magnum.common import profiler
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import magnum.conf
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from magnum.drivers.common.driver import Driver
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LOG = log.getLogger(__name__)
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CONF = magnum.conf.CONF
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@profiler.trace_cls("rpc")
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@six.add_metaclass(abc.ABCMeta)
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class MonitorBase(object):
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def __init__(self, context, cluster):
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self.context = context
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self.cluster = cluster
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@abc.abstractproperty
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def metrics_spec(self):
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"""Metric specification."""
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@abc.abstractmethod
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def pull_data(self):
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"""Pull data for monitoring."""
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def get_metric_names(self):
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return self.metrics_spec.keys()
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def get_metric_unit(self, metric_name):
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return self.metrics_spec[metric_name]['unit']
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def compute_metric_value(self, metric_name):
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func_name = self.metrics_spec[metric_name]['func']
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func = getattr(self, func_name)
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return func()
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def create_monitor(context, cluster):
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cluster_driver = Driver.get_driver_for_cluster(context, cluster)
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monitor = cluster_driver.get_monitor(context, cluster)
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if monitor:
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return monitor
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LOG.debug("Cannot create monitor with cluster type '%s'",
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cluster.cluster_template.coe)
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return None
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