github.com/SamarSidharth/kpt@v0.0.0-20231122062228-c7d747ae3ace/internal/util/porch/client.go (about)

     1  // Copyright 2022 The kpt Authors
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package porch
    16  
    17  import (
    18  	"context"
    19  
    20  	porchapi "github.com/GoogleContainerTools/kpt/porch/api/porch/v1alpha1"
    21  	configapi "github.com/GoogleContainerTools/kpt/porch/api/porchconfig/v1alpha1"
    22  	coreapi "k8s.io/api/core/v1"
    23  	"k8s.io/apimachinery/pkg/api/meta"
    24  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    25  	"k8s.io/apimachinery/pkg/runtime"
    26  	"k8s.io/apimachinery/pkg/runtime/schema"
    27  	"k8s.io/apimachinery/pkg/runtime/serializer"
    28  	"k8s.io/cli-runtime/pkg/genericclioptions"
    29  	"k8s.io/client-go/rest"
    30  	"sigs.k8s.io/controller-runtime/pkg/client"
    31  )
    32  
    33  func CreateClient(config *rest.Config) (client.Client, error) {
    34  	scheme, err := createScheme()
    35  	if err != nil {
    36  		return nil, err
    37  	}
    38  
    39  	c, err := client.New(config, client.Options{
    40  		Scheme: scheme,
    41  		Mapper: createRESTMapper(),
    42  	})
    43  	if err != nil {
    44  		return nil, err
    45  	}
    46  
    47  	return c, nil
    48  }
    49  
    50  func CreateClientWithFlags(flags *genericclioptions.ConfigFlags) (client.Client, error) {
    51  	config, err := flags.ToRESTConfig()
    52  	if err != nil {
    53  		return nil, err
    54  	}
    55  
    56  	return CreateClient(config)
    57  }
    58  
    59  func CreateDynamicClient(flags *genericclioptions.ConfigFlags) (client.WithWatch, error) {
    60  	config, err := flags.ToRESTConfig()
    61  	if err != nil {
    62  		return nil, err
    63  	}
    64  
    65  	scheme, err := createScheme()
    66  	if err != nil {
    67  		return nil, err
    68  	}
    69  
    70  	c, err := client.NewWithWatch(config, client.Options{
    71  		Scheme: scheme,
    72  	})
    73  	if err != nil {
    74  		return nil, err
    75  	}
    76  
    77  	return c, nil
    78  }
    79  
    80  // controller-runtime does not support subresources so we use REST client directly.
    81  // TODO: Separate Porch clientset into its own module (similar to k8s clientsets) to use it
    82  // without causing circular reference.
    83  func CreateRESTClient(flags *genericclioptions.ConfigFlags) (rest.Interface, error) {
    84  	config, err := flags.ToRESTConfig()
    85  	if err != nil {
    86  		return nil, err
    87  	}
    88  
    89  	scheme, err := createScheme()
    90  	if err != nil {
    91  		return nil, err
    92  	}
    93  
    94  	codecs := serializer.NewCodecFactory(scheme)
    95  
    96  	gv := porchapi.SchemeGroupVersion
    97  	config.GroupVersion = &gv
    98  	config.APIPath = "/apis"
    99  	config.NegotiatedSerializer = codecs.WithoutConversion()
   100  
   101  	return rest.RESTClientFor(config)
   102  }
   103  
   104  func createScheme() (*runtime.Scheme, error) {
   105  	scheme := runtime.NewScheme()
   106  
   107  	for _, api := range (runtime.SchemeBuilder{
   108  		configapi.AddToScheme,
   109  		porchapi.AddToScheme,
   110  		coreapi.AddToScheme,
   111  		metav1.AddMetaToScheme,
   112  	}) {
   113  		if err := api(scheme); err != nil {
   114  			return nil, err
   115  		}
   116  	}
   117  	return scheme, nil
   118  }
   119  
   120  func createRESTMapper() meta.RESTMapper {
   121  	rm := meta.NewDefaultRESTMapper([]schema.GroupVersion{
   122  		configapi.GroupVersion,
   123  		porchapi.SchemeGroupVersion,
   124  		coreapi.SchemeGroupVersion,
   125  		metav1.SchemeGroupVersion,
   126  	})
   127  
   128  	for _, r := range []struct {
   129  		kind             schema.GroupVersionKind
   130  		plural, singular string
   131  	}{
   132  		{kind: configapi.GroupVersion.WithKind("Repository"), plural: "repositories", singular: "repository"},
   133  		{kind: porchapi.SchemeGroupVersion.WithKind("PackageRevision"), plural: "packagerevisions", singular: "packagerevision"},
   134  		{kind: porchapi.SchemeGroupVersion.WithKind("PackageRevisionResources"), plural: "packagerevisionresources", singular: "packagerevisionresources"},
   135  		{kind: porchapi.SchemeGroupVersion.WithKind("Function"), plural: "functions", singular: "function"},
   136  		{kind: coreapi.SchemeGroupVersion.WithKind("Secret"), plural: "secrets", singular: "secret"},
   137  		{kind: metav1.SchemeGroupVersion.WithKind("Table"), plural: "tables", singular: "table"},
   138  	} {
   139  		rm.AddSpecific(
   140  			r.kind,
   141  			r.kind.GroupVersion().WithResource(r.plural),
   142  			r.kind.GroupVersion().WithResource(r.singular),
   143  			meta.RESTScopeNamespace,
   144  		)
   145  	}
   146  
   147  	return rm
   148  }
   149  
   150  func Apply(ctx context.Context, api client.Client, obj client.Object) error {
   151  	return api.Patch(ctx, obj, client.Apply, client.FieldOwner("kubectl"))
   152  }