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63 lines
2.3 KiB
Go
63 lines
2.3 KiB
Go
/*
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Copyright 2023 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 monitor
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import (
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"time"
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v2 "k8s.io/api/autoscaling/v2"
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)
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type ActionLabel string
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type ErrorLabel string
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const (
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ActionLabelScaleUp ActionLabel = "scale_up"
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ActionLabelScaleDown ActionLabel = "scale_down"
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ActionLabelNone ActionLabel = "none"
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// ErrorLabelSpec represents an error due to an invalid spec of HPA object.
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ErrorLabelSpec ErrorLabel = "spec"
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// ErrorLabelInternal represents an error from an internal computation or communication with other component.
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ErrorLabelInternal ErrorLabel = "internal"
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ErrorLabelNone ErrorLabel = "none"
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)
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// Monitor records some metrics so that people can monitor HPA controller.
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type Monitor interface {
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ObserveReconciliationResult(action ActionLabel, err ErrorLabel, duration time.Duration)
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ObserveMetricComputationResult(action ActionLabel, err ErrorLabel, duration time.Duration, metricType v2.MetricSourceType)
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}
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type monitor struct{}
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func New() Monitor {
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return &monitor{}
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}
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// ObserveReconciliationResult observes some metrics from a reconciliation result.
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func (r *monitor) ObserveReconciliationResult(action ActionLabel, err ErrorLabel, duration time.Duration) {
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reconciliationsTotal.WithLabelValues(string(action), string(err)).Inc()
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reconciliationsDuration.WithLabelValues(string(action), string(err)).Observe(duration.Seconds())
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}
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// ObserveMetricComputationResult observes some metrics from a metric computation result.
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func (r *monitor) ObserveMetricComputationResult(action ActionLabel, err ErrorLabel, duration time.Duration, metricType v2.MetricSourceType) {
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metricComputationTotal.WithLabelValues(string(action), string(err), string(metricType)).Inc()
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metricComputationDuration.WithLabelValues(string(action), string(err), string(metricType)).Observe(duration.Seconds())
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}
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