k8s.io/kubernetes@v1.31.0-alpha.0.0.20240520171757-56147500dadc/pkg/scheduler/apis/config/v1/conversion.go (about)

     1  /*
     2  Copyright 2022 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 v1
    18  
    19  import (
    20  	"fmt"
    21  	"sync"
    22  
    23  	"k8s.io/apimachinery/pkg/conversion"
    24  	"k8s.io/apimachinery/pkg/runtime"
    25  	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
    26  	v1 "k8s.io/kube-scheduler/config/v1"
    27  	"k8s.io/kubernetes/pkg/scheduler/apis/config"
    28  )
    29  
    30  var (
    31  	// pluginArgConversionScheme is a scheme with internal and v1 registered,
    32  	// used for defaulting/converting typed PluginConfig Args.
    33  	// Access via getPluginArgConversionScheme()
    34  	pluginArgConversionScheme     *runtime.Scheme
    35  	initPluginArgConversionScheme sync.Once
    36  )
    37  
    38  func GetPluginArgConversionScheme() *runtime.Scheme {
    39  	initPluginArgConversionScheme.Do(func() {
    40  		// set up the scheme used for plugin arg conversion
    41  		pluginArgConversionScheme = runtime.NewScheme()
    42  		utilruntime.Must(AddToScheme(pluginArgConversionScheme))
    43  		utilruntime.Must(config.AddToScheme(pluginArgConversionScheme))
    44  	})
    45  	return pluginArgConversionScheme
    46  }
    47  
    48  func Convert_v1_KubeSchedulerConfiguration_To_config_KubeSchedulerConfiguration(in *v1.KubeSchedulerConfiguration, out *config.KubeSchedulerConfiguration, s conversion.Scope) error {
    49  	if err := autoConvert_v1_KubeSchedulerConfiguration_To_config_KubeSchedulerConfiguration(in, out, s); err != nil {
    50  		return err
    51  	}
    52  	return convertToInternalPluginConfigArgs(out)
    53  }
    54  
    55  // convertToInternalPluginConfigArgs converts PluginConfig#Args into internal
    56  // types using a scheme, after applying defaults.
    57  func convertToInternalPluginConfigArgs(out *config.KubeSchedulerConfiguration) error {
    58  	scheme := GetPluginArgConversionScheme()
    59  	for i := range out.Profiles {
    60  		prof := &out.Profiles[i]
    61  		for j := range prof.PluginConfig {
    62  			args := prof.PluginConfig[j].Args
    63  			if args == nil {
    64  				continue
    65  			}
    66  			if _, isUnknown := args.(*runtime.Unknown); isUnknown {
    67  				continue
    68  			}
    69  			internalArgs, err := scheme.ConvertToVersion(args, config.SchemeGroupVersion)
    70  			if err != nil {
    71  				return fmt.Errorf("converting .Profiles[%d].PluginConfig[%d].Args into internal type: %w", i, j, err)
    72  			}
    73  			prof.PluginConfig[j].Args = internalArgs
    74  		}
    75  	}
    76  	return nil
    77  }
    78  
    79  func Convert_config_KubeSchedulerConfiguration_To_v1_KubeSchedulerConfiguration(in *config.KubeSchedulerConfiguration, out *v1.KubeSchedulerConfiguration, s conversion.Scope) error {
    80  	if err := autoConvert_config_KubeSchedulerConfiguration_To_v1_KubeSchedulerConfiguration(in, out, s); err != nil {
    81  		return err
    82  	}
    83  	return convertToExternalPluginConfigArgs(out)
    84  }
    85  
    86  // convertToExternalPluginConfigArgs converts PluginConfig#Args into
    87  // external (versioned) types using a scheme.
    88  func convertToExternalPluginConfigArgs(out *v1.KubeSchedulerConfiguration) error {
    89  	scheme := GetPluginArgConversionScheme()
    90  	for i := range out.Profiles {
    91  		for j := range out.Profiles[i].PluginConfig {
    92  			args := out.Profiles[i].PluginConfig[j].Args
    93  			if args.Object == nil {
    94  				continue
    95  			}
    96  			if _, isUnknown := args.Object.(*runtime.Unknown); isUnknown {
    97  				continue
    98  			}
    99  			externalArgs, err := scheme.ConvertToVersion(args.Object, SchemeGroupVersion)
   100  			if err != nil {
   101  				return err
   102  			}
   103  			out.Profiles[i].PluginConfig[j].Args.Object = externalArgs
   104  		}
   105  	}
   106  	return nil
   107  }