mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-07-29 06:27:05 +00:00
97 lines
3.1 KiB
Go
97 lines
3.1 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 pods
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"k8s.io/apimachinery/pkg/util/validation/field"
|
|
api "k8s.io/kubernetes/pkg/apis/core"
|
|
"k8s.io/kubernetes/pkg/fieldpath"
|
|
)
|
|
|
|
// ContainerVisitorWithPath is called with each container and the field.Path to that container,
|
|
// and returns true if visiting should continue.
|
|
type ContainerVisitorWithPath func(container *api.Container, path *field.Path) bool
|
|
|
|
// VisitContainersWithPath invokes the visitor function with a pointer to the spec
|
|
// of every container in the given pod spec and the field.Path to that container.
|
|
// If visitor returns false, visiting is short-circuited. VisitContainersWithPath returns true if visiting completes,
|
|
// false if visiting was short-circuited.
|
|
func VisitContainersWithPath(podSpec *api.PodSpec, specPath *field.Path, visitor ContainerVisitorWithPath) bool {
|
|
fldPath := specPath.Child("initContainers")
|
|
for i := range podSpec.InitContainers {
|
|
if !visitor(&podSpec.InitContainers[i], fldPath.Index(i)) {
|
|
return false
|
|
}
|
|
}
|
|
fldPath = specPath.Child("containers")
|
|
for i := range podSpec.Containers {
|
|
if !visitor(&podSpec.Containers[i], fldPath.Index(i)) {
|
|
return false
|
|
}
|
|
}
|
|
fldPath = specPath.Child("ephemeralContainers")
|
|
for i := range podSpec.EphemeralContainers {
|
|
if !visitor((*api.Container)(&podSpec.EphemeralContainers[i].EphemeralContainerCommon), fldPath.Index(i)) {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
// ConvertDownwardAPIFieldLabel converts the specified downward API field label
|
|
// and its value in the pod of the specified version to the internal version,
|
|
// and returns the converted label and value. This function returns an error if
|
|
// the conversion fails.
|
|
func ConvertDownwardAPIFieldLabel(version, label, value string) (string, string, error) {
|
|
if version != "v1" {
|
|
return "", "", fmt.Errorf("unsupported pod version: %s", version)
|
|
}
|
|
|
|
if path, _, ok := fieldpath.SplitMaybeSubscriptedPath(label); ok {
|
|
switch path {
|
|
case "metadata.annotations", "metadata.labels":
|
|
return label, value, nil
|
|
default:
|
|
return "", "", fmt.Errorf("field label does not support subscript: %s", label)
|
|
}
|
|
}
|
|
|
|
switch label {
|
|
case "metadata.annotations",
|
|
"metadata.labels",
|
|
"metadata.name",
|
|
"metadata.namespace",
|
|
"metadata.uid",
|
|
"spec.nodeName",
|
|
"spec.restartPolicy",
|
|
"spec.serviceAccountName",
|
|
"spec.schedulerName",
|
|
"status.phase",
|
|
"status.hostIP",
|
|
"status.podIP",
|
|
"status.podIPs":
|
|
return label, value, nil
|
|
// This is for backwards compatibility with old v1 clients which send spec.host
|
|
case "spec.host":
|
|
return "spec.nodeName", value, nil
|
|
default:
|
|
return "", "", fmt.Errorf("field label not supported: %s", label)
|
|
}
|
|
}
|