k8s.io/kube-openapi@v0.0.0-20240228011516-70dd3763d340/pkg/util/proto/testing/openapi.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 testing
    18  
    19  import (
    20  	"os"
    21  	"sync"
    22  
    23  	openapi_v2 "github.com/google/gnostic-models/openapiv2"
    24  )
    25  
    26  // Fake opens and returns a openapi swagger from a file Path. It will
    27  // parse only once and then return the same copy everytime.
    28  type Fake struct {
    29  	Path string
    30  
    31  	once     sync.Once
    32  	document *openapi_v2.Document
    33  	err      error
    34  }
    35  
    36  // OpenAPISchema returns the openapi document and a potential error.
    37  func (f *Fake) OpenAPISchema() (*openapi_v2.Document, error) {
    38  	f.once.Do(func() {
    39  		_, err := os.Stat(f.Path)
    40  		if err != nil {
    41  			f.err = err
    42  			return
    43  		}
    44  		spec, err := os.ReadFile(f.Path)
    45  		if err != nil {
    46  			f.err = err
    47  			return
    48  		}
    49  		f.document, f.err = openapi_v2.ParseDocument(spec)
    50  	})
    51  	return f.document, f.err
    52  }
    53  
    54  type Empty struct{}
    55  
    56  func (Empty) OpenAPISchema() (*openapi_v2.Document, error) {
    57  	return nil, nil
    58  }