4f87a14c7e
We used to have source as a publisher argument, but this anyway ends being included in its Sample itself. So rather than complicating the internal publishing API, simplify it and just include source as a Sample field. Change-Id: Idb9d0c2b5969318dd16394a81d7d61c67f613892
46 lines
1.4 KiB
Python
46 lines
1.4 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Copyright © 2013 Julien Danjou
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#
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# Author: Julien Danjou <julien@danjou.info>
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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 import transformer
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class TransformerAccumulator(transformer.TransformerBase):
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"""Transformer that accumulates counter until a threshold, and then flush
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them out in the wild.
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"""
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def __init__(self, size=1, **kwargs):
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if size >= 1:
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self.counters = []
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self.size = size
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super(TransformerAccumulator, self).__init__(**kwargs)
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def handle_sample(self, context, counter):
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if self.size >= 1:
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self.counters.append(counter)
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else:
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return counter
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def flush(self, context):
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if len(self.counters) >= self.size:
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x = self.counters
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self.counters = []
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return x
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return []
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