mirror of https://github.com/k3s-io/k3s
79 lines
2.5 KiB
Go
79 lines
2.5 KiB
Go
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/*
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Copyright 2017 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 util
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import (
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"fmt"
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"time"
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"github.com/prometheus/client_golang/prometheus"
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"k8s.io/kubernetes/pkg/volume"
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)
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var storageOperationMetric = prometheus.NewHistogramVec(
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prometheus.HistogramOpts{
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Name: "storage_operation_duration_seconds",
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Help: "Storage operation duration",
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Buckets: []float64{.1, .25, .5, 1, 2.5, 5, 10, 15, 25, 50},
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},
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[]string{"volume_plugin", "operation_name"},
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)
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var storageOperationErrorMetric = prometheus.NewCounterVec(
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prometheus.CounterOpts{
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Name: "storage_operation_errors_total",
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Help: "Storage operation errors",
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},
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[]string{"volume_plugin", "operation_name"},
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)
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func init() {
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registerMetrics()
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}
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func registerMetrics() {
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prometheus.MustRegister(storageOperationMetric)
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prometheus.MustRegister(storageOperationErrorMetric)
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}
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// OperationCompleteHook returns a hook to call when an operation is completed
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func OperationCompleteHook(plugin, operationName string) func(*error) {
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requestTime := time.Now()
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opComplete := func(err *error) {
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timeTaken := time.Since(requestTime).Seconds()
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// Create metric with operation name and plugin name
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if *err != nil {
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storageOperationErrorMetric.WithLabelValues(plugin, operationName).Inc()
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} else {
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storageOperationMetric.WithLabelValues(plugin, operationName).Observe(timeTaken)
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}
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}
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return opComplete
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}
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// GetFullQualifiedPluginNameForVolume returns full qualified plugin name for
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// given volume. For CSI plugin, it appends plugin driver name at the end of
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// plugin name, e.g. kubernetes.io/csi:csi-hostpath. It helps to distinguish
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// between metrics emitted for CSI volumes which may be handled by different
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// CSI plugin drivers.
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func GetFullQualifiedPluginNameForVolume(pluginName string, spec *volume.Spec) string {
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if spec != nil && spec.PersistentVolume != nil && spec.PersistentVolume.Spec.CSI != nil {
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return fmt.Sprintf("%s:%s", pluginName, spec.PersistentVolume.Spec.CSI.Driver)
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}
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return pluginName
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}
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