istio.io/istio@v0.0.0-20240520182934-d79c90f27776/pkg/config/schema/kubetypes/common.go (about)

     1  // Copyright Istio 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 kubetypes
    16  
    17  import (
    18  	"fmt"
    19  
    20  	"k8s.io/apimachinery/pkg/runtime"
    21  	"k8s.io/apimachinery/pkg/runtime/schema"
    22  
    23  	"istio.io/istio/pkg/config"
    24  	"istio.io/istio/pkg/config/schema/gvk"
    25  	"istio.io/istio/pkg/ptr"
    26  	"istio.io/istio/pkg/typemap"
    27  )
    28  
    29  func MustGVRFromType[T runtime.Object]() schema.GroupVersionResource {
    30  	if gk, ok := getGvk(ptr.Empty[T]()); ok {
    31  		gr, ok := gvk.ToGVR(gk)
    32  		if !ok {
    33  			panic(fmt.Sprintf("unknown GVR for GVK %v", gk))
    34  		}
    35  		return gr
    36  	}
    37  	if rp := typemap.Get[RegisterType[T]](registeredTypes); rp != nil {
    38  		return (*rp).GetGVR()
    39  	}
    40  	panic("unknown kind: " + ptr.TypeName[T]())
    41  }
    42  
    43  func MustGVKFromType[T runtime.Object]() (cfg config.GroupVersionKind) {
    44  	if gvk, ok := getGvk(ptr.Empty[T]()); ok {
    45  		return gvk
    46  	}
    47  	if rp := typemap.Get[RegisterType[T]](registeredTypes); rp != nil {
    48  		return (*rp).GetGVK()
    49  	}
    50  	panic("unknown kind: " + cfg.String())
    51  }
    52  
    53  func MustToGVR[T runtime.Object](cfg config.GroupVersionKind) schema.GroupVersionResource {
    54  	if r, ok := gvk.ToGVR(cfg); ok {
    55  		return r
    56  	}
    57  	if rp := typemap.Get[RegisterType[T]](registeredTypes); rp != nil {
    58  		return (*rp).GetGVR()
    59  	}
    60  	panic("unknown kind: " + cfg.String())
    61  }
    62  
    63  func GvkFromObject(obj runtime.Object) config.GroupVersionKind {
    64  	if gvk, ok := getGvk(obj); ok {
    65  		return gvk
    66  	}
    67  	panic("unknown kind: " + obj.GetObjectKind().GroupVersionKind().String())
    68  }
    69  
    70  var registeredTypes = typemap.NewTypeMap()
    71  
    72  func Register[T runtime.Object](reg RegisterType[T]) {
    73  	typemap.Set[RegisterType[T]](registeredTypes, reg)
    74  }
    75  
    76  type RegisterType[T runtime.Object] interface {
    77  	GetGVK() config.GroupVersionKind
    78  	GetGVR() schema.GroupVersionResource
    79  	Object() T
    80  }