knative.dev/pkg@v0.0.0-20260602142205-ac97e43f6622/apis/duck/v1/podspec_defaults.go (about)

     1  /*
     2  Copyright 2021 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 v1
    18  
    19  import (
    20  	"context"
    21  )
    22  
    23  // PodSpecDefaulter is a callback to validate a PodSpecable.
    24  type PodSpecDefaulter func(context.Context, *WithPod)
    25  
    26  // SetDefaults implements apis.Defaultable
    27  func (wp *WithPod) SetDefaults(ctx context.Context) {
    28  	if psd := GetPodSpecDefaulter(ctx); psd != nil {
    29  		psd(ctx, wp)
    30  	}
    31  }
    32  
    33  // psdKey is used for associating a PodSpecDefaulter with a context.Context
    34  type psdKey struct{}
    35  
    36  func WithPodSpecDefaulter(ctx context.Context, psd PodSpecDefaulter) context.Context {
    37  	return context.WithValue(ctx, psdKey{}, psd)
    38  }
    39  
    40  // GetPodSpecDefaulter extracts the PodSpecDefaulter from the context.
    41  func GetPodSpecDefaulter(ctx context.Context) PodSpecDefaulter {
    42  	untyped := ctx.Value(psdKey{})
    43  	if untyped == nil {
    44  		return nil
    45  	}
    46  	return untyped.(PodSpecDefaulter)
    47  }
    48  
    49  // PodDefaulter is a callback to validate a Pod.
    50  type PodDefaulter func(context.Context, *Pod)
    51  
    52  // SetDefaults implements apis.Defaultable
    53  func (p *Pod) SetDefaults(ctx context.Context) {
    54  	if pd := GetPodDefaulter(ctx); pd != nil {
    55  		pd(ctx, p)
    56  	}
    57  }
    58  
    59  // pdKey is used for associating a PodDefaulter with a context.Context
    60  type pdKey struct{}
    61  
    62  func WithPodDefaulter(ctx context.Context, pd PodDefaulter) context.Context {
    63  	return context.WithValue(ctx, pdKey{}, pd)
    64  }
    65  
    66  // GetPodDefaulter extracts the PodDefaulter from the context.
    67  func GetPodDefaulter(ctx context.Context) PodDefaulter {
    68  	untyped := ctx.Value(pdKey{})
    69  	if untyped == nil {
    70  		return nil
    71  	}
    72  	return untyped.(PodDefaulter)
    73  }