knative.dev/pkg@v0.0.0-20260602142205-ac97e43f6622/webhook/resourcesemantics/defaulting/user_info.go (about)

     1  /*
     2  Copyright 2019 The Knative Authors
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package defaulting
    18  
    19  import (
    20  	"context"
    21  
    22  	admissionv1 "k8s.io/api/admission/v1"
    23  	"k8s.io/apimachinery/pkg/api/equality"
    24  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    25  	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
    26  
    27  	"knative.dev/pkg/apis"
    28  )
    29  
    30  var (
    31  	emptyGroupUpdaterAnnotation = apis.UpdaterAnnotationSuffix[1:]
    32  	emptyGroupCreatorAnnotation = apis.CreatorAnnotationSuffix[1:]
    33  )
    34  
    35  // setUserInfoAnnotations sets creator and updater annotations on a resource.
    36  func setUserInfoAnnotations(ctx context.Context, resource apis.HasSpec, groupName string) {
    37  	if ui := apis.GetUserInfo(ctx); ui != nil {
    38  		objectMetaAccessor, ok := resource.(metav1.ObjectMetaAccessor)
    39  		if !ok {
    40  			return
    41  		}
    42  
    43  		annotations := objectMetaAccessor.GetObjectMeta().GetAnnotations()
    44  		if annotations == nil {
    45  			annotations = map[string]string{}
    46  			objectMetaAccessor.GetObjectMeta().SetAnnotations(annotations)
    47  		}
    48  
    49  		updaterAnnotation := emptyGroupUpdaterAnnotation
    50  		creatorAnnotation := emptyGroupCreatorAnnotation
    51  		if groupName != "" {
    52  			updaterAnnotation = groupName + apis.UpdaterAnnotationSuffix
    53  			creatorAnnotation = groupName + apis.CreatorAnnotationSuffix
    54  		}
    55  
    56  		if apis.IsInUpdate(ctx) {
    57  			old := apis.GetBaseline(ctx).(apis.HasSpec)
    58  			if equality.Semantic.DeepEqual(old.GetUntypedSpec(), resource.GetUntypedSpec()) {
    59  				return
    60  			}
    61  			annotations[updaterAnnotation] = ui.Username
    62  		} else {
    63  			annotations[creatorAnnotation] = ui.Username
    64  			annotations[updaterAnnotation] = ui.Username
    65  		}
    66  		objectMetaAccessor.GetObjectMeta().SetAnnotations(annotations)
    67  	}
    68  }
    69  
    70  type unstructuredHasSpec struct {
    71  	*unstructured.Unstructured
    72  }
    73  
    74  func (us unstructuredHasSpec) GetObjectMeta() metav1.Object {
    75  	return us.Unstructured
    76  }
    77  
    78  var _ metav1.ObjectMetaAccessor = unstructuredHasSpec{}
    79  
    80  func (us unstructuredHasSpec) GetUntypedSpec() interface{} {
    81  	if s, ok := us.Unstructured.Object["spec"]; ok {
    82  		return s
    83  	}
    84  	return nil
    85  }
    86  
    87  func adaptUnstructuredHasSpecCtx(ctx context.Context, req *admissionv1.AdmissionRequest) context.Context {
    88  	if apis.IsInUpdate(ctx) {
    89  		b := apis.GetBaseline(ctx)
    90  		if apis.IsInStatusUpdate(ctx) {
    91  			ctx = apis.WithinSubResourceUpdate(ctx, unstructuredHasSpec{b.(*unstructured.Unstructured)}, req.SubResource)
    92  		} else {
    93  			ctx = apis.WithinUpdate(ctx, unstructuredHasSpec{b.(*unstructured.Unstructured)})
    94  		}
    95  	}
    96  	return ctx
    97  }