forked from kubevirt/kubevirt
/
migration_metrics.go
101 lines (86 loc) · 3.28 KB
/
migration_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 (
"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 (
migrationTransTimeErrFmt = "Error encountered during VMI migration transition time histogram calculation: %v"
migrationTransTimeFail = "Failed to get a histogram for a VMI migration lifecycle transition times"
)
var (
migrationMetrics = []operatormetrics.Metric{
vmiMigrationPhaseTransitionTimeFromCreation,
}
vmiMigrationPhaseTransitionTimeFromCreation = operatormetrics.NewHistogramVec(
operatormetrics.MetricOpts{
Name: "kubevirt_vmi_migration_phase_transition_time_from_creation_seconds",
Help: "Histogram of VM migration phase transitions duration from creation time in seconds.",
},
prometheus.HistogramOpts{
Buckets: PhaseTransitionTimeBuckets(),
},
[]string{
// phase of the vmi migration
"phase",
},
)
)
func CreateVMIMigrationHandler(informer cache.SharedIndexInformer) error {
_, err := informer.AddEventHandler(cache.ResourceEventHandlerFuncs{
UpdateFunc: func(oldVMIMigration, newVMIMigration interface{}) {
updateVMIMigrationPhaseTransitionTimeFromCreationTime(oldVMIMigration.(*v1.VirtualMachineInstanceMigration), newVMIMigration.(*v1.VirtualMachineInstanceMigration))
},
})
return err
}
func updateVMIMigrationPhaseTransitionTimeFromCreationTime(oldVMIMigration *v1.VirtualMachineInstanceMigration, newVMIMigration *v1.VirtualMachineInstanceMigration) {
if oldVMIMigration == nil || oldVMIMigration.Status.Phase == newVMIMigration.Status.Phase {
return
}
diffSeconds, err := getVMIMigrationTransitionTimeSeconds(newVMIMigration)
if err != nil {
log.Log.V(4).Infof(migrationTransTimeErrFmt, err)
return
}
labels := []string{string(newVMIMigration.Status.Phase)}
histogram, err := vmiMigrationPhaseTransitionTimeFromCreation.GetMetricWithLabelValues(labels...)
if err != nil {
log.Log.Reason(err).Error(migrationTransTimeFail)
return
}
histogram.Observe(diffSeconds)
}
func getVMIMigrationTransitionTimeSeconds(newVMIMigration *v1.VirtualMachineInstanceMigration) (float64, error) {
var oldTime *metav1.Time
var newTime *metav1.Time
oldTime = newVMIMigration.CreationTimestamp.DeepCopy()
for _, transitionTimestamp := range newVMIMigration.Status.PhaseTransitionTimestamps {
if transitionTimestamp.Phase == newVMIMigration.Status.Phase {
newTime = transitionTimestamp.PhaseTransitionTimestamp.DeepCopy()
} else if newTime != nil {
break
}
}
return getTransitionTimeSeconds(oldTime, newTime)
}