convert.go

Documentation: k8s.io/kubernetes/pkg/kubelet/kuberuntime

     1  /*
     2  Copyright 2020 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 kuberuntime
    18  
    19  import (
    20  	"sort"
    21  
    22  	utilfeature "k8s.io/apiserver/pkg/util/feature"
    23  	runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1"
    24  	"k8s.io/kubernetes/pkg/features"
    25  	kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
    26  )
    27  
    28  // This file contains help function to kuberuntime types to CRI runtime API types, or vice versa.
    29  
    30  func toKubeContainerImageSpec(image *runtimeapi.Image) kubecontainer.ImageSpec {
    31  	var annotations []kubecontainer.Annotation
    32  
    33  	if image.Spec != nil && len(image.Spec.Annotations) > 0 {
    34  		annotationKeys := make([]string, 0, len(image.Spec.Annotations))
    35  		for k := range image.Spec.Annotations {
    36  			annotationKeys = append(annotationKeys, k)
    37  		}
    38  		sort.Strings(annotationKeys)
    39  		for _, k := range annotationKeys {
    40  			annotations = append(annotations, kubecontainer.Annotation{
    41  				Name:  k,
    42  				Value: image.Spec.Annotations[k],
    43  			})
    44  		}
    45  	}
    46  
    47  	spec := kubecontainer.ImageSpec{
    48  		Image:       image.Id,
    49  		Annotations: annotations,
    50  	}
    51  	// if RuntimeClassInImageCriAPI feature gate is enabled, set runtimeHandler CRI field
    52  	if utilfeature.DefaultFeatureGate.Enabled(features.RuntimeClassInImageCriAPI) {
    53  		runtimeHandler := ""
    54  		if image.Spec != nil {
    55  			runtimeHandler = image.Spec.RuntimeHandler
    56  		}
    57  		spec.RuntimeHandler = runtimeHandler
    58  	}
    59  
    60  	return spec
    61  }
    62  
    63  func toRuntimeAPIImageSpec(imageSpec kubecontainer.ImageSpec) *runtimeapi.ImageSpec {
    64  	var annotations = make(map[string]string)
    65  	if imageSpec.Annotations != nil {
    66  		for _, a := range imageSpec.Annotations {
    67  			annotations[a.Name] = a.Value
    68  		}
    69  	}
    70  
    71  	spec := runtimeapi.ImageSpec{
    72  		Image:       imageSpec.Image,
    73  		Annotations: annotations,
    74  	}
    75  	// if RuntimeClassInImageCriAPI feature gate is enabled, set runtimeHandler CRI field
    76  	if utilfeature.DefaultFeatureGate.Enabled(features.RuntimeClassInImageCriAPI) {
    77  		spec.RuntimeHandler = imageSpec.RuntimeHandler
    78  	}
    79  
    80  	return &spec
    81  }
    82
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