/
operatorcondition.go
96 lines (75 loc) · 3.17 KB
/
operatorcondition.go
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package operatorlister
import (
"fmt"
"sync"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/types"
v2 "github.com/operator-framework/api/pkg/operators/v2"
listers "github.com/operator-framework/operator-lifecycle-manager/pkg/api/client/listers/operators/v2"
)
type UnionOperatorConditionLister struct {
opConditionListers map[string]listers.OperatorConditionLister
opConditionLock sync.RWMutex
}
// List lists all OperatorConditions in the indexer.
func (uol *UnionOperatorConditionLister) List(selector labels.Selector) (ret []*v2.OperatorCondition, err error) {
uol.opConditionLock.RLock()
defer uol.opConditionLock.RUnlock()
set := make(map[types.UID]*v2.OperatorCondition)
for _, cl := range uol.opConditionListers {
csvs, err := cl.List(selector)
if err != nil {
return nil, err
}
for _, csv := range csvs {
set[csv.GetUID()] = csv
}
}
for _, csv := range set {
ret = append(ret, csv)
}
return
}
// OperatorConditions returns an object that can list and get OperatorConditions.
func (uol *UnionOperatorConditionLister) OperatorConditions(namespace string) listers.OperatorConditionNamespaceLister {
uol.opConditionLock.RLock()
defer uol.opConditionLock.RUnlock()
// Check for specific namespace listers
if cl, ok := uol.opConditionListers[namespace]; ok {
return cl.OperatorConditions(namespace)
}
// Check for any namespace-all listers
if cl, ok := uol.opConditionListers[metav1.NamespaceAll]; ok {
return cl.OperatorConditions(namespace)
}
return &NullOperatorConditionNamespaceLister{}
}
func (uol *UnionOperatorConditionLister) RegisterOperatorConditionLister(namespace string, lister listers.OperatorConditionLister) {
uol.opConditionLock.Lock()
defer uol.opConditionLock.Unlock()
if uol.opConditionListers == nil {
uol.opConditionListers = make(map[string]listers.OperatorConditionLister)
}
uol.opConditionListers[namespace] = lister
}
func (l *operatorsV2Lister) RegisterOperatorConditionLister(namespace string, lister listers.OperatorConditionLister) {
l.operatorConditionLister.RegisterOperatorConditionLister(namespace, lister)
}
func (l *operatorsV2Lister) OperatorConditionLister() listers.OperatorConditionLister {
return l.operatorConditionLister
}
// NullOperatorConditionNamespaceLister is an implementation of a null OperatorConditionNamespaceLister. It is
// used to prevent nil pointers when no OperatorConditionNamespaceLister has been registered for a given
// namespace.
type NullOperatorConditionNamespaceLister struct {
listers.OperatorConditionNamespaceLister
}
// List returns nil and an error explaining that this is a NullOperatorConditionNamespaceLister.
func (n *NullOperatorConditionNamespaceLister) List(selector labels.Selector) (ret []*v2.OperatorCondition, err error) {
return nil, fmt.Errorf("cannot list OperatorConditions with a NullOperatorConditionNamespaceLister")
}
// Get returns nil and an error explaining that this is a NullOperatorConditionNamespaceLister.
func (n *NullOperatorConditionNamespaceLister) Get(name string) (*v2.OperatorCondition, error) {
return nil, fmt.Errorf("cannot get OperatorCondition with a NullOperatorConditionNamespaceLister")
}