sigs.k8s.io/external-dns@v0.14.1/source/unstructured_converter.go (about)

     1  /*
     2  Copyright 2017 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 source
    18  
    19  import (
    20  	projectcontour "github.com/projectcontour/contour/apis/projectcontour/v1"
    21  	"k8s.io/apimachinery/pkg/runtime"
    22  	"k8s.io/client-go/kubernetes/scheme"
    23  )
    24  
    25  // UnstructuredConverter handles conversions between unstructured.Unstructured and Contour types
    26  type UnstructuredConverter struct {
    27  	// scheme holds an initializer for converting Unstructured to a type
    28  	scheme *runtime.Scheme
    29  }
    30  
    31  // NewUnstructuredConverter returns a new UnstructuredConverter initialized
    32  func NewUnstructuredConverter() (*UnstructuredConverter, error) {
    33  	uc := &UnstructuredConverter{
    34  		scheme: runtime.NewScheme(),
    35  	}
    36  
    37  	// Setup converter to understand custom CRD types
    38  	_ = projectcontour.AddToScheme(uc.scheme)
    39  
    40  	// Add the core types we need
    41  	if err := scheme.AddToScheme(uc.scheme); err != nil {
    42  		return nil, err
    43  	}
    44  
    45  	return uc, nil
    46  }