95 lines
3.9 KiB
Python
95 lines
3.9 KiB
Python
# (C) Copyright 2014-2016 Hewlett Packard Enterprise Development LP
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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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#
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# Copyright (c) 2012, Datadog <info@datadoghq.com>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the Datadog nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL DATADOG BE LIABLE FOR ANY
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# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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from monascastatsd import metricbase
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class Counter(metricbase.MetricBase):
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def __init__(self, name, connection, dimensions=None):
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super(self.__class__, self).__init__(name=name,
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connection=connection,
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dimensions=dimensions)
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def increment(self, value=1, dimensions=None, sample_rate=1):
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"""Increment a counter, optionally setting a value, dimensions
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and a sample rate.
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>>> monascastatsd.increment()
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>>> monascastatsd.increment(12)
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"""
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self._report_change(dimensions, sample_rate, value)
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def decrement(self, value=1, dimensions=None, sample_rate=1):
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"""Decrement a counter, optionally setting a value, dimensions and a
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sample rate.
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>>> monascastatsd.decrement()
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>>> monascastatsd.decrement(2)
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"""
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self._report_change(dimensions, sample_rate, -value)
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def _report_change(self, dimensions, sample_rate, value):
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self._connection.report(metric=self._name,
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metric_type='c',
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value=value,
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dimensions=self.update_dimensions(dimensions),
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sample_rate=sample_rate)
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def __add__(self, value):
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"""Increment the counter with `value`
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:keyword value: The value to add to the counter
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:type value: int
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"""
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self.increment(value=value)
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return self
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def __sub__(self, value):
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"""Decrement the counter with `value`
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:keyword value: The value to remove from the counter
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:type value: int
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"""
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self.decrement(value=value)
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return self
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