conversion.go

Documentation: k8s.io/kubernetes/pkg/apis/apps/v1beta1

     1  /*
     2  Copyright 2016 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 v1beta1
    18  
    19  import (
    20  	"fmt"
    21  
    22  	appsv1beta1 "k8s.io/api/apps/v1beta1"
    23  	corev1 "k8s.io/api/core/v1"
    24  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    25  	"k8s.io/apimachinery/pkg/conversion"
    26  	"k8s.io/apimachinery/pkg/labels"
    27  	"k8s.io/apimachinery/pkg/runtime"
    28  	apps "k8s.io/kubernetes/pkg/apis/apps"
    29  	"k8s.io/kubernetes/pkg/apis/autoscaling"
    30  	"k8s.io/kubernetes/pkg/apis/core"
    31  )
    32  
    33  func addConversionFuncs(scheme *runtime.Scheme) error {
    34  	// Add field label conversions for kinds having selectable nothing but ObjectMeta fields.
    35  	if err := scheme.AddFieldLabelConversionFunc(SchemeGroupVersion.WithKind("StatefulSet"),
    36  		func(label, value string) (string, string, error) {
    37  			switch label {
    38  			case "metadata.name", "metadata.namespace", "status.successful":
    39  				return label, value, nil
    40  			default:
    41  				return "", "", fmt.Errorf("field label not supported for appsv1beta1.StatefulSet: %s", label)
    42  			}
    43  		}); err != nil {
    44  		return err
    45  	}
    46  
    47  	return nil
    48  }
    49  
    50  func Convert_autoscaling_ScaleStatus_To_v1beta1_ScaleStatus(in *autoscaling.ScaleStatus, out *appsv1beta1.ScaleStatus, s conversion.Scope) error {
    51  	out.Replicas = int32(in.Replicas)
    52  	out.TargetSelector = in.Selector
    53  
    54  	out.Selector = nil
    55  	selector, err := metav1.ParseToLabelSelector(in.Selector)
    56  	if err != nil {
    57  		return fmt.Errorf("failed to parse selector: %v", err)
    58  	}
    59  	if len(selector.MatchExpressions) == 0 {
    60  		out.Selector = selector.MatchLabels
    61  	}
    62  
    63  	return nil
    64  }
    65  
    66  func Convert_v1beta1_ScaleStatus_To_autoscaling_ScaleStatus(in *appsv1beta1.ScaleStatus, out *autoscaling.ScaleStatus, s conversion.Scope) error {
    67  	out.Replicas = in.Replicas
    68  
    69  	if in.TargetSelector != "" {
    70  		out.Selector = in.TargetSelector
    71  	} else if in.Selector != nil {
    72  		set := labels.Set{}
    73  		for key, val := range in.Selector {
    74  			set[key] = val
    75  		}
    76  		out.Selector = labels.SelectorFromSet(set).String()
    77  	} else {
    78  		out.Selector = ""
    79  	}
    80  	return nil
    81  }
    82  
    83  // Convert_v1beta1_StatefulSetSpec_To_apps_StatefulSetSpec augments auto-conversion to preserve < 1.17 behavior
    84  // setting apiVersion/kind in nested persistent volume claim objects.
    85  func Convert_v1beta1_StatefulSetSpec_To_apps_StatefulSetSpec(in *appsv1beta1.StatefulSetSpec, out *apps.StatefulSetSpec, s conversion.Scope) error {
    86  	if err := autoConvert_v1beta1_StatefulSetSpec_To_apps_StatefulSetSpec(in, out, s); err != nil {
    87  		return err
    88  	}
    89  	// set APIVersion/Kind to behave the same as reflective conversion < 1.17.
    90  	// see https://issue.k8s.io/87583
    91  	if out.VolumeClaimTemplates != nil {
    92  		// copy so we don't modify the input
    93  		templatesCopy := make([]core.PersistentVolumeClaim, len(out.VolumeClaimTemplates))
    94  		copy(templatesCopy, out.VolumeClaimTemplates)
    95  		out.VolumeClaimTemplates = templatesCopy
    96  		for i := range out.VolumeClaimTemplates {
    97  			out.VolumeClaimTemplates[i].APIVersion = ""
    98  			out.VolumeClaimTemplates[i].Kind = ""
    99  		}
   100  	}
   101  	return nil
   102  }
   103  
   104  // Convert_apps_StatefulSetSpec_To_v1beta1_StatefulSetSpec augments auto-conversion to preserve < 1.17 behavior
   105  // setting apiVersion/kind in nested persistent volume claim objects.
   106  func Convert_apps_StatefulSetSpec_To_v1beta1_StatefulSetSpec(in *apps.StatefulSetSpec, out *appsv1beta1.StatefulSetSpec, s conversion.Scope) error {
   107  	if err := autoConvert_apps_StatefulSetSpec_To_v1beta1_StatefulSetSpec(in, out, s); err != nil {
   108  		return err
   109  	}
   110  	// set APIVersion/Kind to behave the same as reflective conversion < 1.17.
   111  	// see https://issue.k8s.io/87583
   112  	if out.VolumeClaimTemplates != nil {
   113  		// copy so we don't modify the input
   114  		templatesCopy := make([]corev1.PersistentVolumeClaim, len(out.VolumeClaimTemplates))
   115  		copy(templatesCopy, out.VolumeClaimTemplates)
   116  		out.VolumeClaimTemplates = templatesCopy
   117  		for i := range out.VolumeClaimTemplates {
   118  			out.VolumeClaimTemplates[i].APIVersion = "v1"
   119  			out.VolumeClaimTemplates[i].Kind = "PersistentVolumeClaim"
   120  		}
   121  	}
   122  	return nil
   123  }
   124
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