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migrations.go
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migrations.go
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package migrations
import (
v12 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/tools/cache"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
v1 "kubevirt.io/api/core/v1"
"kubevirt.io/client-go/log"
virtconfig "kubevirt.io/kubevirt/pkg/virt-config"
)
const CancelMigrationFailedVmiNotMigratingErr = "failed to cancel migration - vmi is not migrating"
func ListUnfinishedMigrations(informer cache.SharedIndexInformer) []*v1.VirtualMachineInstanceMigration {
objs := informer.GetStore().List()
migrations := []*v1.VirtualMachineInstanceMigration{}
for _, obj := range objs {
migration := obj.(*v1.VirtualMachineInstanceMigration)
if !migration.IsFinal() {
migrations = append(migrations, migration)
}
}
return migrations
}
func ListWorkloadUpdateMigrations(store cache.Store, vmiName, ns string) []v1.VirtualMachineInstanceMigration {
objs := store.List()
migrations := []v1.VirtualMachineInstanceMigration{}
for _, obj := range objs {
migration := obj.(*v1.VirtualMachineInstanceMigration)
if migration.IsFinal() {
continue
}
if migration.Namespace != ns {
continue
}
if migration.Spec.VMIName != vmiName {
continue
}
if !metav1.HasAnnotation(migration.ObjectMeta, v1.WorkloadUpdateMigrationAnnotation) {
continue
}
migrations = append(migrations, *migration)
}
return migrations
}
func FilterRunningMigrations(migrations []*v1.VirtualMachineInstanceMigration) []*v1.VirtualMachineInstanceMigration {
runningMigrations := []*v1.VirtualMachineInstanceMigration{}
for _, migration := range migrations {
if migration.IsRunning() {
runningMigrations = append(runningMigrations, migration)
}
}
return runningMigrations
}
// IsMigrating returns true if a given VMI is still migrating and false otherwise.
func IsMigrating(vmi *v1.VirtualMachineInstance) bool {
if vmi == nil {
log.Log.V(4).Infof("checking if VMI is migrating, but it is empty")
return false
}
now := v12.Now()
running := false
if vmi.Status.MigrationState != nil {
start := vmi.Status.MigrationState.StartTimestamp
stop := vmi.Status.MigrationState.EndTimestamp
if start != nil && (now.After(start.Time) || now.Equal(start)) {
running = true
}
if stop != nil && (now.After(stop.Time) || now.Equal(stop)) {
running = false
}
}
return running
}
func MigrationFailed(vmi *v1.VirtualMachineInstance) bool {
if vmi.Status.MigrationState != nil && vmi.Status.MigrationState.Failed {
return true
}
return false
}
func VMIEvictionStrategy(clusterConfig *virtconfig.ClusterConfig, vmi *v1.VirtualMachineInstance) *v1.EvictionStrategy {
if vmi != nil && vmi.Spec.EvictionStrategy != nil {
return vmi.Spec.EvictionStrategy
}
clusterStrategy := clusterConfig.GetConfig().EvictionStrategy
return clusterStrategy
}
func VMIMigratableOnEviction(clusterConfig *virtconfig.ClusterConfig, vmi *v1.VirtualMachineInstance) bool {
strategy := VMIEvictionStrategy(clusterConfig, vmi)
if strategy == nil {
return false
}
switch *strategy {
case v1.EvictionStrategyLiveMigrate:
return true
case v1.EvictionStrategyLiveMigrateIfPossible:
return vmi.IsMigratable()
}
return false
}