82 lines
1.7 KiB
Go
82 lines
1.7 KiB
Go
/*
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Copyright NetFoundry Inc.
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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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https://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package metrics
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import (
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"github.com/openziti/foundation/v2/concurrenz"
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"github.com/rcrowley/go-metrics"
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)
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// Histogram represents a metric which is measuring the distribution of values for some measurement
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type Histogram interface {
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Metric
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Count() int64
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Max() int64
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Mean() float64
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Min() int64
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Percentile(float64) float64
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Percentiles([]float64) []float64
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StdDev() float64
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Sum() int64
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Variance() float64
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Clear()
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Update(int64)
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CreateSnapshot() Histogram
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}
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type histogramImpl struct {
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metrics.Histogram
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name string
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registry *registryImpl
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concurrenz.RefCount
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}
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func (self *histogramImpl) Name() string {
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return self.name
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}
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func (self *histogramImpl) Dispose() {
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self.registry.disposeRefCounted(self)
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}
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func (self *histogramImpl) stop() {
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// no resources to cleanup
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}
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func (self *histogramImpl) CreateSnapshot() Histogram {
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return &histogramSnapshot{
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Histogram: self.Snapshot(),
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name: self.name,
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}
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}
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type histogramSnapshot struct {
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metrics.Histogram
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name string
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}
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func (self *histogramSnapshot) Name() string {
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return self.name
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}
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func (self *histogramSnapshot) Dispose() {}
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func (self *histogramSnapshot) CreateSnapshot() Histogram {
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return self
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}
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