forked from kubevirt/kubevirt
/
perfscale_metrics.go
228 lines (195 loc) · 6.78 KB
/
perfscale_metrics.go
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/*
* This file is part of the KubeVirt project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright the KubeVirt Authors.
*/
package virt_controller
import (
"fmt"
"github.com/machadovilaca/operator-observability/pkg/operatormetrics"
"github.com/prometheus/client_golang/prometheus"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/tools/cache"
v1 "kubevirt.io/api/core/v1"
"kubevirt.io/client-go/log"
)
const (
transTimeErrFmt = "Error encountered during VMI transition time histogram calculation: %v"
transTimeFail = "Failed to get a histogram for a VMI lifecycle transition times"
)
var (
perfscaleMetrics = []operatormetrics.Metric{
vmiPhaseTransition,
vmiPhaseTransitionTimeFromCreation,
vmiPhaseTransitionFromDeletion,
}
vmiPhaseTransition = operatormetrics.NewHistogramVec(
operatormetrics.MetricOpts{
Name: "kubevirt_vmi_phase_transition_time_seconds",
Help: "Histogram of VM phase transitions duration between different phases in seconds.",
},
prometheus.HistogramOpts{
Buckets: PhaseTransitionTimeBuckets(),
},
[]string{
// phase of the vmi
"phase",
// last phase of the vmi
"last_phase",
},
)
vmiPhaseTransitionTimeFromCreation = operatormetrics.NewHistogramVec(
operatormetrics.MetricOpts{
Name: "kubevirt_vmi_phase_transition_time_from_creation_seconds",
Help: "Histogram of VM phase transitions duration from creation time in seconds.",
},
prometheus.HistogramOpts{
Buckets: PhaseTransitionTimeBuckets(),
},
[]string{
// phase of the vmi
"phase",
},
)
vmiPhaseTransitionFromDeletion = operatormetrics.NewHistogramVec(
operatormetrics.MetricOpts{
Name: "kubevirt_vmi_phase_transition_time_from_deletion_seconds",
Help: "Histogram of VM phase transitions duration from deletion time in seconds.",
},
prometheus.HistogramOpts{
Buckets: PhaseTransitionTimeBuckets(),
},
[]string{
// phase of the vmi
"phase",
},
)
)
func AddVMIPhaseTransitionHandlers(informer cache.SharedIndexInformer) error {
err := addVMIPhaseTransitionHandler(informer)
if err != nil {
return err
}
err = addVMIPhaseTransitionTimeFromCreationHandler(informer)
if err != nil {
return err
}
err = addVMIPhaseTransitionTimeFromDeletionHandler(informer)
if err != nil {
return err
}
return nil
}
func addVMIPhaseTransitionHandler(informer cache.SharedIndexInformer) error {
_, err := informer.AddEventHandler(cache.ResourceEventHandlerFuncs{
UpdateFunc: func(oldVMI, newVMI interface{}) {
updateVMIPhaseTransitionTime(oldVMI.(*v1.VirtualMachineInstance), newVMI.(*v1.VirtualMachineInstance))
},
})
return err
}
func addVMIPhaseTransitionTimeFromCreationHandler(informer cache.SharedIndexInformer) error {
_, err := informer.AddEventHandler(cache.ResourceEventHandlerFuncs{
UpdateFunc: func(oldVMI, newVMI interface{}) {
updateVMIPhaseTransitionTimeFromCreationTime(oldVMI.(*v1.VirtualMachineInstance), newVMI.(*v1.VirtualMachineInstance))
},
})
return err
}
func addVMIPhaseTransitionTimeFromDeletionHandler(informer cache.SharedIndexInformer) error {
_, err := informer.AddEventHandler(cache.ResourceEventHandlerFuncs{
UpdateFunc: func(oldVMI, newVMI interface{}) {
// User is deleting a VM. Record the time from the
// deletionTimestamp to when the VMI enters the final phase
updateVMIPhaseTransitionTimeFromDeletionTime(oldVMI.(*v1.VirtualMachineInstance), newVMI.(*v1.VirtualMachineInstance))
},
})
return err
}
func updateVMIPhaseTransitionTime(oldVMI *v1.VirtualMachineInstance, newVMI *v1.VirtualMachineInstance) {
if oldVMI == nil || oldVMI.Status.Phase == newVMI.Status.Phase {
return
}
diffSeconds, err := getVMITransitionTimeSeconds(false, false, oldVMI, newVMI)
if err != nil {
log.Log.V(4).Infof(transTimeErrFmt, err)
return
}
labels := []string{string(newVMI.Status.Phase), string(oldVMI.Status.Phase)}
histogram, err := vmiPhaseTransition.GetMetricWithLabelValues(labels...)
if err != nil {
log.Log.Reason(err).Error(transTimeFail)
return
}
histogram.Observe(diffSeconds)
}
func updateVMIPhaseTransitionTimeFromCreationTime(oldVMI *v1.VirtualMachineInstance, newVMI *v1.VirtualMachineInstance) {
if oldVMI == nil || oldVMI.Status.Phase == newVMI.Status.Phase {
return
}
diffSeconds, err := getVMITransitionTimeSeconds(true, false, oldVMI, newVMI)
if err != nil {
log.Log.V(4).Infof(transTimeErrFmt, err)
return
}
labels := []string{string(newVMI.Status.Phase)}
histogram, err := vmiPhaseTransitionTimeFromCreation.GetMetricWithLabelValues(labels...)
if err != nil {
log.Log.Reason(err).Error(transTimeFail)
return
}
histogram.Observe(diffSeconds)
}
func updateVMIPhaseTransitionTimeFromDeletionTime(oldVMI *v1.VirtualMachineInstance, newVMI *v1.VirtualMachineInstance) {
if !newVMI.IsMarkedForDeletion() || !newVMI.IsFinal() {
return
}
if oldVMI == nil || oldVMI.Status.Phase == newVMI.Status.Phase {
return
}
diffSeconds, err := getVMITransitionTimeSeconds(false, true, oldVMI, newVMI)
if err != nil {
log.Log.V(4).Infof(transTimeErrFmt, err)
return
}
labels := []string{string(newVMI.Status.Phase)}
histogram, err := vmiPhaseTransitionFromDeletion.GetMetricWithLabelValues(labels...)
if err != nil {
log.Log.Reason(err).Error(transTimeFail)
return
}
histogram.Observe(diffSeconds)
}
func getVMITransitionTimeSeconds(fromCreation bool, fromDeletion bool, oldVMI *v1.VirtualMachineInstance, newVMI *v1.VirtualMachineInstance) (float64, error) {
var oldTime *metav1.Time
var newTime *metav1.Time
if fromCreation || oldVMI == nil || (oldVMI.Status.Phase == v1.VmPhaseUnset) {
oldTime = newVMI.CreationTimestamp.DeepCopy()
} else if fromDeletion && newVMI.IsMarkedForDeletion() {
oldTime = newVMI.DeletionTimestamp.DeepCopy()
} else if fromDeletion && !newVMI.IsMarkedForDeletion() {
return 0.0, fmt.Errorf("missing deletion timestamp")
}
for _, transitionTimestamp := range newVMI.Status.PhaseTransitionTimestamps {
if newTime == nil && transitionTimestamp.Phase == newVMI.Status.Phase {
newTime = transitionTimestamp.PhaseTransitionTimestamp.DeepCopy()
} else if oldTime == nil && oldVMI != nil && transitionTimestamp.Phase == oldVMI.Status.Phase {
oldTime = transitionTimestamp.PhaseTransitionTimestamp.DeepCopy()
} else if oldTime != nil && newTime != nil {
break
}
}
return getTransitionTimeSeconds(oldTime, newTime)
}