84 lines
3.2 KiB
Go
84 lines
3.2 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package validation
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import (
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"fmt"
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"k8s.io/apimachinery/pkg/api/meta"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/util/validation"
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"k8s.io/apimachinery/pkg/util/validation/field"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/legacyscheme"
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)
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// ValidateEvent makes sure that the event makes sense.
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func ValidateEvent(event *api.Event) field.ErrorList {
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allErrs := field.ErrorList{}
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// Make sure event.Namespace and the involvedObject.Namespace agree
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if len(event.InvolvedObject.Namespace) == 0 {
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// event.Namespace must also be empty (or "default", for compatibility with old clients)
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if event.Namespace != metav1.NamespaceNone && event.Namespace != metav1.NamespaceDefault {
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allErrs = append(allErrs, field.Invalid(field.NewPath("involvedObject", "namespace"), event.InvolvedObject.Namespace, "does not match event.namespace"))
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}
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} else {
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// event namespace must match
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if event.Namespace != event.InvolvedObject.Namespace {
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allErrs = append(allErrs, field.Invalid(field.NewPath("involvedObject", "namespace"), event.InvolvedObject.Namespace, "does not match event.namespace"))
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}
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}
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// For kinds we recognize, make sure involvedObject.Namespace is set for namespaced kinds
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if namespaced, err := isNamespacedKind(event.InvolvedObject.Kind, event.InvolvedObject.APIVersion); err == nil {
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if namespaced && len(event.InvolvedObject.Namespace) == 0 {
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allErrs = append(allErrs, field.Required(field.NewPath("involvedObject", "namespace"), fmt.Sprintf("required for kind %s", event.InvolvedObject.Kind)))
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}
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if !namespaced && len(event.InvolvedObject.Namespace) > 0 {
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allErrs = append(allErrs, field.Invalid(field.NewPath("involvedObject", "namespace"), event.InvolvedObject.Namespace, fmt.Sprintf("not allowed for kind %s", event.InvolvedObject.Kind)))
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}
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}
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for _, msg := range validation.IsDNS1123Subdomain(event.Namespace) {
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allErrs = append(allErrs, field.Invalid(field.NewPath("namespace"), event.Namespace, msg))
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}
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return allErrs
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}
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// Check whether the kind in groupVersion is scoped at the root of the api hierarchy
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func isNamespacedKind(kind, groupVersion string) (bool, error) {
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gv, err := schema.ParseGroupVersion(groupVersion)
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if err != nil {
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return false, err
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}
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g, err := legacyscheme.Registry.Group(gv.Group)
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if err != nil {
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return false, err
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}
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restMapping, err := g.RESTMapper.RESTMapping(schema.GroupKind{Group: gv.Group, Kind: kind}, gv.Version)
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if err != nil {
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return false, err
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}
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scopeName := restMapping.Scope.Name()
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if scopeName == meta.RESTScopeNameNamespace {
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return true, nil
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}
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return false, nil
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}
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