mirror of https://github.com/k3s-io/k3s
141 lines
3.6 KiB
Go
141 lines
3.6 KiB
Go
/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package testing
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import (
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"io/ioutil"
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"os"
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"sync"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/kube-openapi/pkg/util/proto"
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"k8s.io/kubernetes/pkg/kubectl/cmd/util/openapi"
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yaml "gopkg.in/yaml.v2"
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"github.com/googleapis/gnostic/OpenAPIv2"
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"github.com/googleapis/gnostic/compiler"
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)
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// Fake opens and returns a openapi swagger from a file Path. It will
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// parse only once and then return the same copy everytime.
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type Fake struct {
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Path string
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once sync.Once
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document *openapi_v2.Document
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err error
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}
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// OpenAPISchema returns the openapi document and a potential error.
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func (f *Fake) OpenAPISchema() (*openapi_v2.Document, error) {
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f.once.Do(func() {
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_, err := os.Stat(f.Path)
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if err != nil {
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f.err = err
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return
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}
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spec, err := ioutil.ReadFile(f.Path)
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if err != nil {
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f.err = err
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return
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}
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var info yaml.MapSlice
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err = yaml.Unmarshal(spec, &info)
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if err != nil {
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f.err = err
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return
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}
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f.document, f.err = openapi_v2.NewDocument(info, compiler.NewContext("$root", nil))
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})
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return f.document, f.err
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}
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// FakeClient implements a dummy OpenAPISchemaInterface that uses the
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// fake OpenAPI schema given as a parameter, and count the number of
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// call to the function.
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type FakeClient struct {
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Calls int
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Err error
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fake *Fake
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}
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// NewFakeClient creates a new FakeClient from the given Fake.
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func NewFakeClient(f *Fake) *FakeClient {
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return &FakeClient{fake: f}
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}
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// OpenAPISchema returns a OpenAPI Document as returned by the fake, but
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// it also counts the number of calls.
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func (f *FakeClient) OpenAPISchema() (*openapi_v2.Document, error) {
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f.Calls = f.Calls + 1
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if f.Err != nil {
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return nil, f.Err
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}
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return f.fake.OpenAPISchema()
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}
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// FakeResources is a wrapper to directly load the openapi schema from a
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// file, and get the schema for given GVK. This is only for test since
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// it's assuming that the file is there and everything will go fine.
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type FakeResources struct {
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fake Fake
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}
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var _ openapi.Resources = &FakeResources{}
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// NewFakeResources creates a new FakeResources.
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func NewFakeResources(path string) *FakeResources {
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return &FakeResources{
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fake: Fake{Path: path},
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}
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}
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// LookupResource will read the schema, parse it and return the
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// resources. It doesn't return errors and will panic instead.
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func (f *FakeResources) LookupResource(gvk schema.GroupVersionKind) proto.Schema {
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s, err := f.fake.OpenAPISchema()
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if err != nil {
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panic(err)
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}
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resources, err := openapi.NewOpenAPIData(s)
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if err != nil {
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panic(err)
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}
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return resources.LookupResource(gvk)
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}
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// EmptyResources implement a Resources that just doesn't have any resources.
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type EmptyResources struct{}
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var _ openapi.Resources = EmptyResources{}
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// LookupResource will always return nil. It doesn't have any resources.
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func (f EmptyResources) LookupResource(gvk schema.GroupVersionKind) proto.Schema {
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return nil
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}
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// CreateOpenAPISchemaFunc returns a function useful for the TestFactory.
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func CreateOpenAPISchemaFunc(path string) func() (openapi.Resources, error) {
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return func() (openapi.Resources, error) {
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return NewFakeResources(path), nil
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}
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}
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