75 lines
2.1 KiB
Go
75 lines
2.1 KiB
Go
/*
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Copyright 2022 The Kubernetes Authors.
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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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http://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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"time"
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"k8s.io/component-base/metrics"
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"k8s.io/component-base/metrics/legacyregistry"
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)
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// TODO(jiahuif) CEL is to be used in multiple components, revise naming when that happens.
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const (
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namespace = "apiserver"
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subsystem = "cel"
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)
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// Metrics provides access to CEL metrics.
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var Metrics = newCelMetrics()
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type CelMetrics struct {
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compilationTime *metrics.Histogram
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evaluationTime *metrics.Histogram
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}
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func newCelMetrics() *CelMetrics {
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m := &CelMetrics{
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compilationTime: metrics.NewHistogram(&metrics.HistogramOpts{
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Namespace: namespace,
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Subsystem: subsystem,
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Name: "compilation_duration_seconds",
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Help: "CEL compilation time in seconds.",
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StabilityLevel: metrics.ALPHA,
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}),
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evaluationTime: metrics.NewHistogram(&metrics.HistogramOpts{
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Namespace: namespace,
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Subsystem: subsystem,
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Name: "evaluation_duration_seconds",
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Help: "CEL evaluation time in seconds.",
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StabilityLevel: metrics.ALPHA,
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}),
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}
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legacyregistry.MustRegister(m.compilationTime)
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legacyregistry.MustRegister(m.evaluationTime)
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return m
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}
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// ObserveCompilation records a CEL compilation with the time the compilation took.
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func (m *CelMetrics) ObserveCompilation(elapsed time.Duration) {
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seconds := elapsed.Seconds()
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m.compilationTime.Observe(seconds)
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}
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// ObserveEvaluation records a CEL evaluation with the time the evaluation took.
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func (m *CelMetrics) ObserveEvaluation(elapsed time.Duration) {
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seconds := elapsed.Seconds()
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m.evaluationTime.Observe(seconds)
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}
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