k8s.io/apiserver@v0.31.1/pkg/admission/decorator.go (about)

     1  /*
     2  Copyright 2018 The Kubernetes 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 admission
    18  
    19  type Decorator interface {
    20  	Decorate(handler Interface, name string) Interface
    21  }
    22  
    23  type DecoratorFunc func(handler Interface, name string) Interface
    24  
    25  func (d DecoratorFunc) Decorate(handler Interface, name string) Interface {
    26  	return d(handler, name)
    27  }
    28  
    29  type Decorators []Decorator
    30  
    31  // Decorate applies the decorator in inside-out order, i.e. the first decorator in the slice is first applied to the given handler.
    32  func (d Decorators) Decorate(handler Interface, name string) Interface {
    33  	result := handler
    34  	for _, d := range d {
    35  		result = d.Decorate(result, name)
    36  	}
    37  
    38  	return result
    39  }