/
conditions.go
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/
conditions.go
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/*
Copyright 2020 The CDI Authors.
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.
*/
package datavolume
import (
"fmt"
"strings"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
cdiv1 "kubevirt.io/containerized-data-importer-api/pkg/apis/core/v1beta1"
cc "kubevirt.io/containerized-data-importer/pkg/controller/common"
)
const (
transferRunning = "TransferRunning"
pvcBound = "Bound"
pvcPending = "Pending"
)
// FindConditionByType finds condition by type
func FindConditionByType(conditionType cdiv1.DataVolumeConditionType, conditions []cdiv1.DataVolumeCondition) *cdiv1.DataVolumeCondition {
for i, condition := range conditions {
if condition.Type == conditionType {
return &conditions[i]
}
}
return nil
}
func updateCondition(conditions []cdiv1.DataVolumeCondition, conditionType cdiv1.DataVolumeConditionType, status corev1.ConditionStatus, message, reason string) []cdiv1.DataVolumeCondition {
condition := FindConditionByType(conditionType, conditions)
if condition == nil {
conditions = append(conditions, cdiv1.DataVolumeCondition{
Type: conditionType,
})
condition = FindConditionByType(conditionType, conditions)
}
if condition.Status != status {
condition.LastTransitionTime = metav1.Now()
condition.Message = message
condition.Reason = reason
condition.LastHeartbeatTime = condition.LastTransitionTime
} else if condition.Message != message || condition.Reason != reason {
condition.Message = message
condition.Reason = reason
condition.LastHeartbeatTime = metav1.Now()
}
condition.Status = status
return conditions
}
func updateRunningCondition(conditions []cdiv1.DataVolumeCondition, anno map[string]string) []cdiv1.DataVolumeCondition {
if val, ok := anno[cc.AnnRunningCondition]; ok {
switch strings.ToLower(val) {
case "true":
conditions = updateWithTargetRunning(conditions, anno)
case "false":
conditions = updateWithTargetNotRunning(conditions, anno)
default:
conditions = updateCondition(conditions, cdiv1.DataVolumeRunning, corev1.ConditionUnknown, anno[cc.AnnRunningConditionMessage], anno[cc.AnnRunningConditionReason])
}
} else {
conditions = updateCondition(conditions, cdiv1.DataVolumeRunning, corev1.ConditionFalse, anno[cc.AnnRunningConditionMessage], anno[cc.AnnRunningConditionReason])
}
return conditions
}
func updateWithTargetRunning(conditions []cdiv1.DataVolumeCondition, anno map[string]string) []cdiv1.DataVolumeCondition {
if sourceRunningVal, ok := anno[cc.AnnSourceRunningCondition]; ok {
switch strings.ToLower(sourceRunningVal) {
case "true":
conditions = updateCondition(conditions, cdiv1.DataVolumeRunning, corev1.ConditionTrue, anno[cc.AnnRunningConditionMessage], anno[cc.AnnRunningConditionReason])
conditions = UpdateReadyCondition(conditions, corev1.ConditionFalse, "", transferRunning)
case "false":
// target running, source not running, overall not running.
conditions = updateCondition(conditions, cdiv1.DataVolumeRunning, corev1.ConditionFalse, anno[cc.AnnSourceRunningConditionMessage], anno[cc.AnnSourceRunningConditionReason])
default:
conditions = updateCondition(conditions, cdiv1.DataVolumeRunning, corev1.ConditionUnknown, anno[cc.AnnSourceRunningConditionMessage], anno[cc.AnnSourceRunningConditionReason])
}
} else {
conditions = updateCondition(conditions, cdiv1.DataVolumeRunning, corev1.ConditionTrue, anno[cc.AnnRunningConditionMessage], anno[cc.AnnRunningConditionReason])
conditions = UpdateReadyCondition(conditions, corev1.ConditionFalse, "", transferRunning)
}
return conditions
}
func updateWithTargetNotRunning(conditions []cdiv1.DataVolumeCondition, anno map[string]string) []cdiv1.DataVolumeCondition {
if sourceRunningVal, ok := anno[cc.AnnSourceRunningCondition]; ok {
switch strings.ToLower(sourceRunningVal) {
case "true":
conditions = updateCondition(conditions, cdiv1.DataVolumeRunning, corev1.ConditionFalse, anno[cc.AnnRunningConditionMessage], anno[cc.AnnRunningConditionReason])
case "false":
// target not running and source not running, overall not running.
conditions = updateCondition(conditions, cdiv1.DataVolumeRunning, corev1.ConditionFalse, fmt.Sprintf("%s and %s", anno[cc.AnnRunningConditionMessage], anno[cc.AnnSourceRunningConditionMessage]), fmt.Sprintf("%s and %s", anno[cc.AnnRunningConditionReason], anno[cc.AnnSourceRunningConditionReason]))
default:
conditions = updateCondition(conditions, cdiv1.DataVolumeRunning, corev1.ConditionUnknown, fmt.Sprintf("%s and %s", anno[cc.AnnRunningConditionMessage], anno[cc.AnnSourceRunningConditionMessage]), fmt.Sprintf("%s and %s", anno[cc.AnnRunningConditionReason], anno[cc.AnnSourceRunningConditionReason]))
}
} else {
conditions = updateCondition(conditions, cdiv1.DataVolumeRunning, corev1.ConditionFalse, anno[cc.AnnRunningConditionMessage], anno[cc.AnnRunningConditionReason])
}
return conditions
}
// UpdateReadyCondition updates the ready condition
func UpdateReadyCondition(conditions []cdiv1.DataVolumeCondition, status corev1.ConditionStatus, message, reason string) []cdiv1.DataVolumeCondition {
return updateCondition(conditions, cdiv1.DataVolumeReady, status, message, reason)
}
func updateBoundCondition(conditions []cdiv1.DataVolumeCondition, pvc *corev1.PersistentVolumeClaim, message, reason string) []cdiv1.DataVolumeCondition {
if pvc != nil {
pvcCondition := getPVCCondition(pvc.GetAnnotations())
switch pvc.Status.Phase {
case corev1.ClaimBound:
if pvcCondition == nil || pvcCondition.Status == corev1.ConditionTrue {
conditions = updateCondition(conditions, cdiv1.DataVolumeBound, corev1.ConditionTrue, fmt.Sprintf("PVC %s Bound", pvc.Name), pvcBound)
} else {
conditions = updateCondition(conditions, cdiv1.DataVolumeBound, corev1.ConditionFalse, pvcCondition.Message, pvcCondition.Reason)
conditions = UpdateReadyCondition(conditions, corev1.ConditionFalse, "", "")
}
case corev1.ClaimPending:
if pvcCondition == nil || pvcCondition.Status == corev1.ConditionTrue {
conditions = updateCondition(conditions, cdiv1.DataVolumeBound, corev1.ConditionFalse, fmt.Sprintf("PVC %s Pending", pvc.Name), pvcPending)
conditions = UpdateReadyCondition(conditions, corev1.ConditionFalse, "", "")
} else {
conditions = updateCondition(conditions, cdiv1.DataVolumeBound, corev1.ConditionFalse, fmt.Sprintf("target PVC %s Pending and %s", pvc.Name, pvcCondition.Message), pvcCondition.Reason)
conditions = UpdateReadyCondition(conditions, corev1.ConditionFalse, "", "")
}
case corev1.ClaimLost:
conditions = updateCondition(conditions, cdiv1.DataVolumeBound, corev1.ConditionFalse, "Claim Lost", cc.ClaimLost)
conditions = UpdateReadyCondition(conditions, corev1.ConditionFalse, "", "")
default:
conditions = updateCondition(conditions, cdiv1.DataVolumeBound, corev1.ConditionUnknown, fmt.Sprintf("PVC %s phase unknown", pvc.Name), string(corev1.ConditionUnknown))
conditions = UpdateReadyCondition(conditions, corev1.ConditionFalse, "", "")
}
} else {
if message == "" {
message = "No PVC found"
}
if reason == "" {
reason = cc.NotFound
}
conditions = updateCondition(conditions, cdiv1.DataVolumeBound, corev1.ConditionUnknown, message, reason)
conditions = UpdateReadyCondition(conditions, corev1.ConditionFalse, "", "")
}
return conditions
}
func getPVCCondition(anno map[string]string) *cdiv1.DataVolumeCondition {
if val, ok := anno[cc.AnnBoundCondition]; ok {
status := corev1.ConditionUnknown
if strings.ToLower(val) == "true" {
status = corev1.ConditionTrue
} else if strings.ToLower(val) == "false" {
status = corev1.ConditionFalse
}
return &cdiv1.DataVolumeCondition{
Message: anno[cc.AnnBoundConditionMessage],
Reason: anno[cc.AnnBoundConditionReason],
Status: status,
}
}
return nil
}