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client.go
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client.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 2018 Red Hat, Inc.
*
*/
package util
import (
"fmt"
"time"
"kubevirt.io/kubevirt/pkg/log"
k8sv1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
virtv1 "kubevirt.io/kubevirt/pkg/api/v1"
"kubevirt.io/kubevirt/pkg/kubecli"
"kubevirt.io/kubevirt/pkg/version"
)
const (
KubeVirtFinalizer string = "foregroundDeleteKubeVirt"
)
func UpdateCondition(kv *virtv1.KubeVirt, conditionType virtv1.KubeVirtConditionType, status k8sv1.ConditionStatus, reason string, message string) {
condition, isNew := getCondition(kv, conditionType)
transition := false
if !isNew && (condition.Status != status || condition.Reason != reason || condition.Message != message) {
transition = true
}
condition.Status = status
condition.Reason = reason
condition.Message = message
now := time.Now()
condition.LastProbeTime = metav1.Time{
Time: now,
}
if transition {
condition.LastTransitionTime = metav1.Time{
Time: now,
}
}
conditions := kv.Status.Conditions
if isNew {
conditions = append(conditions, *condition)
} else {
for i := range conditions {
if conditions[i].Type == conditionType {
conditions[i] = *condition
break
}
}
}
kv.Status.Conditions = conditions
}
func getCondition(kv *virtv1.KubeVirt, conditionType virtv1.KubeVirtConditionType) (*virtv1.KubeVirtCondition, bool) {
for _, condition := range kv.Status.Conditions {
if condition.Type == conditionType {
return &condition, false
}
}
condition := &virtv1.KubeVirtCondition{
Type: conditionType,
}
return condition, true
}
func AddFinalizer(kv *virtv1.KubeVirt) {
if !hasFinalizer(kv) {
kv.Finalizers = append(kv.Finalizers, KubeVirtFinalizer)
}
}
func hasFinalizer(kv *virtv1.KubeVirt) bool {
for _, f := range kv.GetFinalizers() {
if f == KubeVirtFinalizer {
return true
}
}
return false
}
func SetVersions(kv *virtv1.KubeVirt, config KubeVirtDeploymentConfig) {
kv.Status.OperatorVersion = version.Get().String()
// Note: for now we just set targetKubeVirtVersion and observedKubeVirtVersion to the tag of the operator image
// In future this needs some more work...
kv.Status.TargetKubeVirtVersion = config.ImageTag
kv.Status.ObservedKubeVirtVersion = config.ImageTag
}
func UpdateScc(clientset kubecli.KubevirtClient, kv *virtv1.KubeVirt, add bool) error {
secClient := clientset.SecClient()
privScc, err := secClient.SecurityContextConstraints().Get("privileged", metav1.GetOptions{})
if err != nil {
if apierrors.IsNotFound(err) {
// we are mot on openshift?
log.Log.V(4).Infof("unable to get scc, we are probably not on openshift: %v", err)
return nil
} else {
return fmt.Errorf("unable to get scc: %v", err)
}
}
var kubeVirtAccounts []string
prefix := "system:serviceaccount"
kubeVirtAccounts = append(kubeVirtAccounts, fmt.Sprintf("%s:%s:%s", prefix, kv.Namespace, "kubevirt-privileged"))
kubeVirtAccounts = append(kubeVirtAccounts, fmt.Sprintf("%s:%s:%s", prefix, kv.Namespace, "kubevirt-apiserver"))
kubeVirtAccounts = append(kubeVirtAccounts, fmt.Sprintf("%s:%s:%s", prefix, kv.Namespace, "kubevirt-controller"))
modified := false
users := privScc.Users
for _, acc := range kubeVirtAccounts {
if add {
if !contains(users, acc) {
users = append(users, acc)
modified = true
}
} else {
removed := false
users, removed = remove(users, acc)
modified = modified || removed
}
}
if modified {
privScc.Users = users
_, err = secClient.SecurityContextConstraints().Update(privScc)
if err != nil {
return fmt.Errorf("unable to update scc: %v", err)
}
}
return nil
}
func contains(users []string, user string) bool {
for _, u := range users {
if u == user {
return true
}
}
return false
}
func remove(users []string, user string) ([]string, bool) {
var newUsers []string
modified := false
for _, u := range users {
if u != user {
newUsers = append(newUsers, u)
} else {
modified = true
}
}
return newUsers, modified
}