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utils.go
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utils.go
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// Copyright 2018 Authors of Cilium
//
// 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 utils
import (
"k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/kubernetes/pkg/kubelet/types"
)
// ExtractNamespace extracts the namespace of ObjectMeta.
func ExtractNamespace(np metav1.Object) string {
ns := np.GetNamespace()
if ns == "" {
return v1.NamespaceDefault
}
return ns
}
// GetObjNamespaceName returns the object's namespace and name.
func GetObjNamespaceName(obj metav1.Object) string {
return ExtractNamespace(obj) + "/" + obj.GetName()
}
// GetObjUID returns the object's namespace and name.
func GetObjUID(obj metav1.Object) string {
return GetObjNamespaceName(obj) + "/" + string(obj.GetUID())
}
// IsInfraContainer returns true if the given set of labels represent a infra
// container.
func IsInfraContainer(labels map[string]string) bool {
return labels[types.KubernetesContainerNameLabel] == "POD"
}