115 lines
3.8 KiB
Go
115 lines
3.8 KiB
Go
|
/*
|
||
|
Copyright 2017 The Kubernetes 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 v1beta1
|
||
|
|
||
|
import (
|
||
|
"fmt"
|
||
|
|
||
|
apps "k8s.io/api/apps/v1beta1"
|
||
|
"k8s.io/api/core/v1"
|
||
|
"k8s.io/api/extensions/v1beta1"
|
||
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
||
|
"k8s.io/apimachinery/pkg/labels"
|
||
|
)
|
||
|
|
||
|
// DaemonSetListerExpansion allows custom methods to be added to
|
||
|
// DaemonSetLister.
|
||
|
type DaemonSetListerExpansion interface {
|
||
|
GetPodDaemonSets(pod *v1.Pod) ([]*v1beta1.DaemonSet, error)
|
||
|
GetHistoryDaemonSets(history *apps.ControllerRevision) ([]*v1beta1.DaemonSet, error)
|
||
|
}
|
||
|
|
||
|
// DaemonSetNamespaceListerExpansion allows custom methods to be added to
|
||
|
// DaemonSetNamespaceLister.
|
||
|
type DaemonSetNamespaceListerExpansion interface{}
|
||
|
|
||
|
// GetPodDaemonSets returns a list of DaemonSets that potentially match a pod.
|
||
|
// Only the one specified in the Pod's ControllerRef will actually manage it.
|
||
|
// Returns an error only if no matching DaemonSets are found.
|
||
|
func (s *daemonSetLister) GetPodDaemonSets(pod *v1.Pod) ([]*v1beta1.DaemonSet, error) {
|
||
|
var selector labels.Selector
|
||
|
var daemonSet *v1beta1.DaemonSet
|
||
|
|
||
|
if len(pod.Labels) == 0 {
|
||
|
return nil, fmt.Errorf("no daemon sets found for pod %v because it has no labels", pod.Name)
|
||
|
}
|
||
|
|
||
|
list, err := s.DaemonSets(pod.Namespace).List(labels.Everything())
|
||
|
if err != nil {
|
||
|
return nil, err
|
||
|
}
|
||
|
|
||
|
var daemonSets []*v1beta1.DaemonSet
|
||
|
for i := range list {
|
||
|
daemonSet = list[i]
|
||
|
if daemonSet.Namespace != pod.Namespace {
|
||
|
continue
|
||
|
}
|
||
|
selector, err = metav1.LabelSelectorAsSelector(daemonSet.Spec.Selector)
|
||
|
if err != nil {
|
||
|
// this should not happen if the DaemonSet passed validation
|
||
|
return nil, err
|
||
|
}
|
||
|
|
||
|
// If a daemonSet with a nil or empty selector creeps in, it should match nothing, not everything.
|
||
|
if selector.Empty() || !selector.Matches(labels.Set(pod.Labels)) {
|
||
|
continue
|
||
|
}
|
||
|
daemonSets = append(daemonSets, daemonSet)
|
||
|
}
|
||
|
|
||
|
if len(daemonSets) == 0 {
|
||
|
return nil, fmt.Errorf("could not find daemon set for pod %s in namespace %s with labels: %v", pod.Name, pod.Namespace, pod.Labels)
|
||
|
}
|
||
|
|
||
|
return daemonSets, nil
|
||
|
}
|
||
|
|
||
|
// GetHistoryDaemonSets returns a list of DaemonSets that potentially
|
||
|
// match a ControllerRevision. Only the one specified in the ControllerRevision's ControllerRef
|
||
|
// will actually manage it.
|
||
|
// Returns an error only if no matching DaemonSets are found.
|
||
|
func (s *daemonSetLister) GetHistoryDaemonSets(history *apps.ControllerRevision) ([]*v1beta1.DaemonSet, error) {
|
||
|
if len(history.Labels) == 0 {
|
||
|
return nil, fmt.Errorf("no DaemonSet found for ControllerRevision %s because it has no labels", history.Name)
|
||
|
}
|
||
|
|
||
|
list, err := s.DaemonSets(history.Namespace).List(labels.Everything())
|
||
|
if err != nil {
|
||
|
return nil, err
|
||
|
}
|
||
|
|
||
|
var daemonSets []*v1beta1.DaemonSet
|
||
|
for _, ds := range list {
|
||
|
selector, err := metav1.LabelSelectorAsSelector(ds.Spec.Selector)
|
||
|
if err != nil {
|
||
|
return nil, fmt.Errorf("invalid label selector: %v", err)
|
||
|
}
|
||
|
// If a DaemonSet with a nil or empty selector creeps in, it should match nothing, not everything.
|
||
|
if selector.Empty() || !selector.Matches(labels.Set(history.Labels)) {
|
||
|
continue
|
||
|
}
|
||
|
daemonSets = append(daemonSets, ds)
|
||
|
}
|
||
|
|
||
|
if len(daemonSets) == 0 {
|
||
|
return nil, fmt.Errorf("could not find DaemonSets for ControllerRevision %s in namespace %s with labels: %v", history.Name, history.Namespace, history.Labels)
|
||
|
}
|
||
|
|
||
|
return daemonSets, nil
|
||
|
}
|