231 lines
8.2 KiB
Go
231 lines
8.2 KiB
Go
/*
|
|
Copyright 2015 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package discovery_test
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"errors"
|
|
"io"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"strings"
|
|
"testing"
|
|
|
|
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
uapi "k8s.io/apimachinery/pkg/apis/meta/v1"
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
"k8s.io/apimachinery/pkg/runtime/schema"
|
|
"k8s.io/apimachinery/pkg/util/sets"
|
|
"k8s.io/client-go/discovery"
|
|
"k8s.io/client-go/pkg/api"
|
|
restclient "k8s.io/client-go/rest"
|
|
"k8s.io/client-go/rest/fake"
|
|
|
|
_ "k8s.io/client-go/pkg/api/install"
|
|
)
|
|
|
|
func objBody(object interface{}) io.ReadCloser {
|
|
output, err := json.MarshalIndent(object, "", "")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return ioutil.NopCloser(bytes.NewReader([]byte(output)))
|
|
}
|
|
|
|
func TestNegotiateVersion(t *testing.T) {
|
|
tests := []struct {
|
|
name string
|
|
requiredVersion *schema.GroupVersion
|
|
expectedVersion *schema.GroupVersion
|
|
serverVersions []string
|
|
clientVersions []schema.GroupVersion
|
|
expectErr func(err error) bool
|
|
sendErr error
|
|
statusCode int
|
|
}{
|
|
{
|
|
name: "server supports client default",
|
|
serverVersions: []string{"version1", api.Registry.GroupOrDie(api.GroupName).GroupVersion.String()},
|
|
clientVersions: []schema.GroupVersion{{Version: "version1"}, api.Registry.GroupOrDie(api.GroupName).GroupVersion},
|
|
expectedVersion: &schema.GroupVersion{Version: "version1"},
|
|
statusCode: http.StatusOK,
|
|
},
|
|
{
|
|
name: "server falls back to client supported",
|
|
serverVersions: []string{"version1"},
|
|
clientVersions: []schema.GroupVersion{{Version: "version1"}, api.Registry.GroupOrDie(api.GroupName).GroupVersion},
|
|
expectedVersion: &schema.GroupVersion{Version: "version1"},
|
|
statusCode: http.StatusOK,
|
|
},
|
|
{
|
|
name: "explicit version supported",
|
|
requiredVersion: &schema.GroupVersion{Version: "v1"},
|
|
serverVersions: []string{"/version1", api.Registry.GroupOrDie(api.GroupName).GroupVersion.String()},
|
|
clientVersions: []schema.GroupVersion{{Version: "version1"}, api.Registry.GroupOrDie(api.GroupName).GroupVersion},
|
|
expectedVersion: &schema.GroupVersion{Version: "v1"},
|
|
statusCode: http.StatusOK,
|
|
},
|
|
{
|
|
name: "explicit version not supported on server",
|
|
requiredVersion: &schema.GroupVersion{Version: "v1"},
|
|
serverVersions: []string{"version1"},
|
|
clientVersions: []schema.GroupVersion{{Version: "version1"}, api.Registry.GroupOrDie(api.GroupName).GroupVersion},
|
|
expectErr: func(err error) bool { return strings.Contains(err.Error(), `server does not support API version "v1"`) },
|
|
statusCode: http.StatusOK,
|
|
},
|
|
{
|
|
name: "explicit version not supported on client",
|
|
requiredVersion: &schema.GroupVersion{Version: "v1"},
|
|
serverVersions: []string{"v1"},
|
|
clientVersions: []schema.GroupVersion{{Version: "version1"}},
|
|
expectErr: func(err error) bool { return strings.Contains(err.Error(), `client does not support API version "v1"`) },
|
|
statusCode: http.StatusOK,
|
|
},
|
|
{
|
|
name: "connection refused error",
|
|
serverVersions: []string{"version1"},
|
|
clientVersions: []schema.GroupVersion{{Version: "version1"}, api.Registry.GroupOrDie(api.GroupName).GroupVersion},
|
|
sendErr: errors.New("connection refused"),
|
|
expectErr: func(err error) bool { return strings.Contains(err.Error(), "connection refused") },
|
|
statusCode: http.StatusOK,
|
|
},
|
|
{
|
|
name: "discovery fails due to 403 Forbidden errors and thus serverVersions is empty, use default GroupVersion",
|
|
clientVersions: []schema.GroupVersion{{Version: "version1"}, api.Registry.GroupOrDie(api.GroupName).GroupVersion},
|
|
expectedVersion: &schema.GroupVersion{Version: "version1"},
|
|
statusCode: http.StatusForbidden,
|
|
},
|
|
{
|
|
name: "discovery fails due to 404 Not Found errors and thus serverVersions is empty, use requested GroupVersion",
|
|
requiredVersion: &schema.GroupVersion{Version: "version1"},
|
|
clientVersions: []schema.GroupVersion{{Version: "version1"}, api.Registry.GroupOrDie(api.GroupName).GroupVersion},
|
|
expectedVersion: &schema.GroupVersion{Version: "version1"},
|
|
statusCode: http.StatusNotFound,
|
|
},
|
|
{
|
|
name: "discovery fails due to 403 Forbidden errors and thus serverVersions is empty, no fallback GroupVersion",
|
|
expectErr: func(err error) bool { return strings.Contains(err.Error(), "failed to negotiate an api version;") },
|
|
statusCode: http.StatusForbidden,
|
|
},
|
|
}
|
|
|
|
for _, test := range tests {
|
|
fakeClient := &fake.RESTClient{
|
|
APIRegistry: api.Registry,
|
|
NegotiatedSerializer: api.Codecs,
|
|
Resp: &http.Response{
|
|
StatusCode: test.statusCode,
|
|
Body: objBody(&uapi.APIVersions{Versions: test.serverVersions}),
|
|
},
|
|
Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
|
|
if test.sendErr != nil {
|
|
return nil, test.sendErr
|
|
}
|
|
header := http.Header{}
|
|
header.Set("Content-Type", runtime.ContentTypeJSON)
|
|
return &http.Response{StatusCode: test.statusCode, Header: header, Body: objBody(&uapi.APIVersions{Versions: test.serverVersions})}, nil
|
|
}),
|
|
}
|
|
c := discovery.NewDiscoveryClientForConfigOrDie(&restclient.Config{})
|
|
c.RESTClient().(*restclient.RESTClient).Client = fakeClient.Client
|
|
response, err := discovery.NegotiateVersion(c, test.requiredVersion, test.clientVersions)
|
|
if err == nil && test.expectErr != nil {
|
|
t.Errorf("expected error, got nil for [%s].", test.name)
|
|
}
|
|
if err != nil {
|
|
if test.expectErr == nil || !test.expectErr(err) {
|
|
t.Errorf("unexpected error for [%s]: %v.", test.name, err)
|
|
}
|
|
continue
|
|
}
|
|
if *response != *test.expectedVersion {
|
|
t.Errorf("%s: expected version %s, got %s.", test.name, test.expectedVersion, response)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestFilteredBy(t *testing.T) {
|
|
all := discovery.ResourcePredicateFunc(func(gv string, r *metav1.APIResource) bool {
|
|
return true
|
|
})
|
|
none := discovery.ResourcePredicateFunc(func(gv string, r *metav1.APIResource) bool {
|
|
return false
|
|
})
|
|
onlyV2 := discovery.ResourcePredicateFunc(func(gv string, r *metav1.APIResource) bool {
|
|
return strings.HasSuffix(gv, "/v2") || gv == "v2"
|
|
})
|
|
onlyBar := discovery.ResourcePredicateFunc(func(gv string, r *metav1.APIResource) bool {
|
|
return r.Kind == "Bar"
|
|
})
|
|
|
|
foo := []*metav1.APIResourceList{
|
|
{
|
|
GroupVersion: "foo/v1",
|
|
APIResources: []metav1.APIResource{
|
|
{Name: "bar", Kind: "Bar"},
|
|
{Name: "test", Kind: "Test"},
|
|
},
|
|
},
|
|
{
|
|
GroupVersion: "foo/v2",
|
|
APIResources: []metav1.APIResource{
|
|
{Name: "bar", Kind: "Bar"},
|
|
{Name: "test", Kind: "Test"},
|
|
},
|
|
},
|
|
{
|
|
GroupVersion: "foo/v3",
|
|
APIResources: []metav1.APIResource{},
|
|
},
|
|
}
|
|
|
|
tests := []struct {
|
|
input []*metav1.APIResourceList
|
|
pred discovery.ResourcePredicate
|
|
expectedResources []string
|
|
}{
|
|
{nil, all, []string{}},
|
|
{[]*metav1.APIResourceList{
|
|
{GroupVersion: "foo/v1"},
|
|
}, all, []string{}},
|
|
{foo, all, []string{"foo/v1.bar", "foo/v1.test", "foo/v2.bar", "foo/v2.test"}},
|
|
{foo, onlyV2, []string{"foo/v2.bar", "foo/v2.test"}},
|
|
{foo, onlyBar, []string{"foo/v1.bar", "foo/v2.bar"}},
|
|
{foo, none, []string{}},
|
|
}
|
|
for i, test := range tests {
|
|
filtered := discovery.FilteredBy(test.pred, test.input)
|
|
|
|
if expected, got := sets.NewString(test.expectedResources...), sets.NewString(stringify(filtered)...); !expected.Equal(got) {
|
|
t.Errorf("[%d] unexpected group versions: expected=%v, got=%v", i, test.expectedResources, stringify(filtered))
|
|
}
|
|
}
|
|
}
|
|
|
|
func stringify(rls []*metav1.APIResourceList) []string {
|
|
result := []string{}
|
|
for _, rl := range rls {
|
|
for _, r := range rl.APIResources {
|
|
result = append(result, rl.GroupVersion+"."+r.Name)
|
|
}
|
|
if len(rl.APIResources) == 0 {
|
|
result = append(result, rl.GroupVersion)
|
|
}
|
|
}
|
|
return result
|
|
}
|