diff options
Diffstat (limited to 'src/kube2msb/vendor/k8s.io/kubernetes/pkg/api/meta/multirestmapper.go')
-rw-r--r-- | src/kube2msb/vendor/k8s.io/kubernetes/pkg/api/meta/multirestmapper.go | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/src/kube2msb/vendor/k8s.io/kubernetes/pkg/api/meta/multirestmapper.go b/src/kube2msb/vendor/k8s.io/kubernetes/pkg/api/meta/multirestmapper.go new file mode 100644 index 0000000..790795a --- /dev/null +++ b/src/kube2msb/vendor/k8s.io/kubernetes/pkg/api/meta/multirestmapper.go @@ -0,0 +1,200 @@ +/* +Copyright 2014 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" + "strings" + + "k8s.io/kubernetes/pkg/api/unversioned" + utilerrors "k8s.io/kubernetes/pkg/util/errors" + "k8s.io/kubernetes/pkg/util/sets" +) + +// MultiRESTMapper is a wrapper for multiple RESTMappers. +type MultiRESTMapper []RESTMapper + +func (m MultiRESTMapper) String() string { + nested := []string{} + for _, t := range m { + currString := fmt.Sprintf("%v", t) + splitStrings := strings.Split(currString, "\n") + nested = append(nested, strings.Join(splitStrings, "\n\t")) + } + + return fmt.Sprintf("MultiRESTMapper{\n\t%s\n}", strings.Join(nested, "\n\t")) +} + +// ResourceSingularizer converts a REST resource name from plural to singular (e.g., from pods to pod) +// This implementation supports multiple REST schemas and return the first match. +func (m MultiRESTMapper) ResourceSingularizer(resource string) (singular string, err error) { + for _, t := range m { + singular, err = t.ResourceSingularizer(resource) + if err == nil { + return + } + } + return +} + +func (m MultiRESTMapper) ResourcesFor(resource unversioned.GroupVersionResource) ([]unversioned.GroupVersionResource, error) { + allGVRs := []unversioned.GroupVersionResource{} + for _, t := range m { + gvrs, err := t.ResourcesFor(resource) + // ignore "no match" errors, but any other error percolates back up + if IsNoResourceMatchError(err) { + continue + } + if err != nil { + return nil, err + } + + // walk the existing values to de-dup + for _, curr := range gvrs { + found := false + for _, existing := range allGVRs { + if curr == existing { + found = true + break + } + } + + if !found { + allGVRs = append(allGVRs, curr) + } + } + } + + if len(allGVRs) == 0 { + return nil, &NoResourceMatchError{PartialResource: resource} + } + + return allGVRs, nil +} + +func (m MultiRESTMapper) KindsFor(resource unversioned.GroupVersionResource) (gvk []unversioned.GroupVersionKind, err error) { + allGVKs := []unversioned.GroupVersionKind{} + for _, t := range m { + gvks, err := t.KindsFor(resource) + // ignore "no match" errors, but any other error percolates back up + if IsNoResourceMatchError(err) { + continue + } + if err != nil { + return nil, err + } + + // walk the existing values to de-dup + for _, curr := range gvks { + found := false + for _, existing := range allGVKs { + if curr == existing { + found = true + break + } + } + + if !found { + allGVKs = append(allGVKs, curr) + } + } + } + + if len(allGVKs) == 0 { + return nil, &NoResourceMatchError{PartialResource: resource} + } + + return allGVKs, nil +} + +func (m MultiRESTMapper) ResourceFor(resource unversioned.GroupVersionResource) (unversioned.GroupVersionResource, error) { + resources, err := m.ResourcesFor(resource) + if err != nil { + return unversioned.GroupVersionResource{}, err + } + if len(resources) == 1 { + return resources[0], nil + } + + return unversioned.GroupVersionResource{}, &AmbiguousResourceError{PartialResource: resource, MatchingResources: resources} +} + +func (m MultiRESTMapper) KindFor(resource unversioned.GroupVersionResource) (unversioned.GroupVersionKind, error) { + kinds, err := m.KindsFor(resource) + if err != nil { + return unversioned.GroupVersionKind{}, err + } + if len(kinds) == 1 { + return kinds[0], nil + } + + return unversioned.GroupVersionKind{}, &AmbiguousResourceError{PartialResource: resource, MatchingKinds: kinds} +} + +// RESTMapping provides the REST mapping for the resource based on the +// kind and version. This implementation supports multiple REST schemas and +// return the first match. +func (m MultiRESTMapper) RESTMapping(gk unversioned.GroupKind, versions ...string) (*RESTMapping, error) { + allMappings := []*RESTMapping{} + errors := []error{} + + for _, t := range m { + currMapping, err := t.RESTMapping(gk, versions...) + // ignore "no match" errors, but any other error percolates back up + if IsNoResourceMatchError(err) { + continue + } + if err != nil { + errors = append(errors, err) + continue + } + + allMappings = append(allMappings, currMapping) + } + + // if we got exactly one mapping, then use it even if other requested failed + if len(allMappings) == 1 { + return allMappings[0], nil + } + if len(allMappings) > 1 { + return nil, fmt.Errorf("multiple matches found for %v in %v", gk, versions) + } + if len(errors) > 0 { + return nil, utilerrors.NewAggregate(errors) + } + return nil, fmt.Errorf("no match found for %v in %v", gk, versions) +} + +// AliasesForResource finds the first alias response for the provided mappers. +func (m MultiRESTMapper) AliasesForResource(alias string) ([]string, bool) { + seenAliases := sets.NewString() + allAliases := []string{} + handled := false + + for _, t := range m { + if currAliases, currOk := t.AliasesForResource(alias); currOk { + for _, currAlias := range currAliases { + if !seenAliases.Has(currAlias) { + allAliases = append(allAliases, currAlias) + seenAliases.Insert(currAlias) + } + } + handled = true + } + } + return allAliases, handled +} |