Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5
Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/vendor/k8s.io/apimachinery/pkg/api/meta/priority.go b/vendor/k8s.io/apimachinery/pkg/api/meta/priority.go
new file mode 100644
index 0000000..fa11c58
--- /dev/null
+++ b/vendor/k8s.io/apimachinery/pkg/api/meta/priority.go
@@ -0,0 +1,222 @@
+/*
+Copyright 2016 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 meta
+
+import (
+ "fmt"
+
+ "k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+const (
+ AnyGroup = "*"
+ AnyVersion = "*"
+ AnyResource = "*"
+ AnyKind = "*"
+)
+
+// PriorityRESTMapper is a wrapper for automatically choosing a particular Resource or Kind
+// when multiple matches are possible
+type PriorityRESTMapper struct {
+ // Delegate is the RESTMapper to use to locate all the Kind and Resource matches
+ Delegate RESTMapper
+
+ // ResourcePriority is a list of priority patterns to apply to matching resources.
+ // The list of all matching resources is narrowed based on the patterns until only one remains.
+ // A pattern with no matches is skipped. A pattern with more than one match uses its
+ // matches as the list to continue matching against.
+ ResourcePriority []schema.GroupVersionResource
+
+ // KindPriority is a list of priority patterns to apply to matching kinds.
+ // The list of all matching kinds is narrowed based on the patterns until only one remains.
+ // A pattern with no matches is skipped. A pattern with more than one match uses its
+ // matches as the list to continue matching against.
+ KindPriority []schema.GroupVersionKind
+}
+
+func (m PriorityRESTMapper) String() string {
+ return fmt.Sprintf("PriorityRESTMapper{\n\t%v\n\t%v\n\t%v\n}", m.ResourcePriority, m.KindPriority, m.Delegate)
+}
+
+// ResourceFor finds all resources, then passes them through the ResourcePriority patterns to find a single matching hit.
+func (m PriorityRESTMapper) ResourceFor(partiallySpecifiedResource schema.GroupVersionResource) (schema.GroupVersionResource, error) {
+ originalGVRs, originalErr := m.Delegate.ResourcesFor(partiallySpecifiedResource)
+ if originalErr != nil && len(originalGVRs) == 0 {
+ return schema.GroupVersionResource{}, originalErr
+ }
+ if len(originalGVRs) == 1 {
+ return originalGVRs[0], originalErr
+ }
+
+ remainingGVRs := append([]schema.GroupVersionResource{}, originalGVRs...)
+ for _, pattern := range m.ResourcePriority {
+ matchedGVRs := []schema.GroupVersionResource{}
+ for _, gvr := range remainingGVRs {
+ if resourceMatches(pattern, gvr) {
+ matchedGVRs = append(matchedGVRs, gvr)
+ }
+ }
+
+ switch len(matchedGVRs) {
+ case 0:
+ // if you have no matches, then nothing matched this pattern just move to the next
+ continue
+ case 1:
+ // one match, return
+ return matchedGVRs[0], originalErr
+ default:
+ // more than one match, use the matched hits as the list moving to the next pattern.
+ // this way you can have a series of selection criteria
+ remainingGVRs = matchedGVRs
+ }
+ }
+
+ return schema.GroupVersionResource{}, &AmbiguousResourceError{PartialResource: partiallySpecifiedResource, MatchingResources: originalGVRs}
+}
+
+// KindFor finds all kinds, then passes them through the KindPriority patterns to find a single matching hit.
+func (m PriorityRESTMapper) KindFor(partiallySpecifiedResource schema.GroupVersionResource) (schema.GroupVersionKind, error) {
+ originalGVKs, originalErr := m.Delegate.KindsFor(partiallySpecifiedResource)
+ if originalErr != nil && len(originalGVKs) == 0 {
+ return schema.GroupVersionKind{}, originalErr
+ }
+ if len(originalGVKs) == 1 {
+ return originalGVKs[0], originalErr
+ }
+
+ remainingGVKs := append([]schema.GroupVersionKind{}, originalGVKs...)
+ for _, pattern := range m.KindPriority {
+ matchedGVKs := []schema.GroupVersionKind{}
+ for _, gvr := range remainingGVKs {
+ if kindMatches(pattern, gvr) {
+ matchedGVKs = append(matchedGVKs, gvr)
+ }
+ }
+
+ switch len(matchedGVKs) {
+ case 0:
+ // if you have no matches, then nothing matched this pattern just move to the next
+ continue
+ case 1:
+ // one match, return
+ return matchedGVKs[0], originalErr
+ default:
+ // more than one match, use the matched hits as the list moving to the next pattern.
+ // this way you can have a series of selection criteria
+ remainingGVKs = matchedGVKs
+ }
+ }
+
+ return schema.GroupVersionKind{}, &AmbiguousResourceError{PartialResource: partiallySpecifiedResource, MatchingKinds: originalGVKs}
+}
+
+func resourceMatches(pattern schema.GroupVersionResource, resource schema.GroupVersionResource) bool {
+ if pattern.Group != AnyGroup && pattern.Group != resource.Group {
+ return false
+ }
+ if pattern.Version != AnyVersion && pattern.Version != resource.Version {
+ return false
+ }
+ if pattern.Resource != AnyResource && pattern.Resource != resource.Resource {
+ return false
+ }
+
+ return true
+}
+
+func kindMatches(pattern schema.GroupVersionKind, kind schema.GroupVersionKind) bool {
+ if pattern.Group != AnyGroup && pattern.Group != kind.Group {
+ return false
+ }
+ if pattern.Version != AnyVersion && pattern.Version != kind.Version {
+ return false
+ }
+ if pattern.Kind != AnyKind && pattern.Kind != kind.Kind {
+ return false
+ }
+
+ return true
+}
+
+func (m PriorityRESTMapper) RESTMapping(gk schema.GroupKind, versions ...string) (mapping *RESTMapping, err error) {
+ mappings, originalErr := m.Delegate.RESTMappings(gk, versions...)
+ if originalErr != nil && len(mappings) == 0 {
+ return nil, originalErr
+ }
+
+ // any versions the user provides take priority
+ priorities := m.KindPriority
+ if len(versions) > 0 {
+ priorities = make([]schema.GroupVersionKind, 0, len(m.KindPriority)+len(versions))
+ for _, version := range versions {
+ gv := schema.GroupVersion{
+ Version: version,
+ Group: gk.Group,
+ }
+ priorities = append(priorities, gv.WithKind(AnyKind))
+ }
+ priorities = append(priorities, m.KindPriority...)
+ }
+
+ remaining := append([]*RESTMapping{}, mappings...)
+ for _, pattern := range priorities {
+ var matching []*RESTMapping
+ for _, m := range remaining {
+ if kindMatches(pattern, m.GroupVersionKind) {
+ matching = append(matching, m)
+ }
+ }
+
+ switch len(matching) {
+ case 0:
+ // if you have no matches, then nothing matched this pattern just move to the next
+ continue
+ case 1:
+ // one match, return
+ return matching[0], originalErr
+ default:
+ // more than one match, use the matched hits as the list moving to the next pattern.
+ // this way you can have a series of selection criteria
+ remaining = matching
+ }
+ }
+ if len(remaining) == 1 {
+ return remaining[0], originalErr
+ }
+
+ var kinds []schema.GroupVersionKind
+ for _, m := range mappings {
+ kinds = append(kinds, m.GroupVersionKind)
+ }
+ return nil, &AmbiguousKindError{PartialKind: gk.WithVersion(""), MatchingKinds: kinds}
+}
+
+func (m PriorityRESTMapper) RESTMappings(gk schema.GroupKind, versions ...string) ([]*RESTMapping, error) {
+ return m.Delegate.RESTMappings(gk, versions...)
+}
+
+func (m PriorityRESTMapper) ResourceSingularizer(resource string) (singular string, err error) {
+ return m.Delegate.ResourceSingularizer(resource)
+}
+
+func (m PriorityRESTMapper) ResourcesFor(partiallySpecifiedResource schema.GroupVersionResource) ([]schema.GroupVersionResource, error) {
+ return m.Delegate.ResourcesFor(partiallySpecifiedResource)
+}
+
+func (m PriorityRESTMapper) KindsFor(partiallySpecifiedResource schema.GroupVersionResource) (gvk []schema.GroupVersionKind, err error) {
+ return m.Delegate.KindsFor(partiallySpecifiedResource)
+}