airshipctl/pkg/k8s/kubeconfig/builder_test.go
Ruslan Aliev b8ddc1fe43 Allow to specify multiple clusters per get-kubeconfig request
Change-Id: I1b736a4b9cae4e6e47ddb7909a8fd619518e975c
Signed-off-by: Ruslan Aliev <raliev@mirantis.com>
Closes: #567
2021-08-12 22:45:33 -05:00

314 lines
9.2 KiB
Go

/*
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
https://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 kubeconfig_test
import (
"bytes"
"path/filepath"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
"github.com/stretchr/testify/require"
apiv1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
corev1 "k8s.io/client-go/kubernetes/typed/core/v1"
"k8s.io/client-go/tools/clientcmd"
"opendev.org/airship/airshipctl/pkg/api/v1alpha1"
"opendev.org/airship/airshipctl/pkg/cluster/clustermap"
"opendev.org/airship/airshipctl/pkg/document"
"opendev.org/airship/airshipctl/pkg/fs"
"opendev.org/airship/airshipctl/pkg/k8s/kubeconfig"
testfs "opendev.org/airship/airshipctl/testutil/fs"
)
const (
testKubeconfigString = `apiVersion: v1
kind: Config
clusters:
- cluster:
certificate-authority-data: c29tZWNlcnQK
server: https://10.23.25.101:6443
name: child_cluster
contexts:
- context:
cluster: child_cluster
user: child_user
name: child
current-context: dummy_cluster
preferences: {}
users:
- name: child_user
user:
client-certificate-data: c29tZWNlcnQK
client-key-data: c29tZWNlcnQK`
testKubeconfigStringSecond = `apiVersion: v1
kind: Config
clusters:
- cluster:
certificate-authority-data: c29tZWNlcnQK
server: https://10.23.25.101:6443
name: parent_cluster
contexts:
- context:
cluster: parent_cluster
user: parent_admin
name: parent-context
current-context: dummy_cluster
preferences: {}
users:
- name: parent_admin
user:
client-certificate-data: c29tZWNlcnQK
client-key-data: c29tZWNlcnQK`
)
func TestBuilderClusterctl(t *testing.T) {
childClusterID := "child"
parentClusterID := "parent"
parentParentClusterID := "parent-parent"
// these are values in kubeconfig.cluster
parentCluster := "parent_cluster"
parentParentCluster := "parent_parent_cluster"
childCluster := "child_cluster"
parentUser := "parent_admin"
parentParentUser := "parent_parent_admin"
childUser := "child_user"
testBundle, err := document.NewBundleByPath("testdata")
require.NoError(t, err)
kubeconfigPath := filepath.Join("testdata", "kubeconfig-12341234")
tests := []struct {
name string
errString string
requestedClusterName string
tempRoot string
siteWide bool
expectedContexts, expectedClusters, expectedAuthInfos []string
clusterMap clustermap.ClusterMap
client corev1.CoreV1Interface
fs fs.FileSystem
}{
{
name: "success cluster-api not reachable",
expectedContexts: []string{parentClusterID},
expectedClusters: []string{parentParentCluster},
expectedAuthInfos: []string{parentParentUser},
siteWide: true,
clusterMap: clustermap.NewClusterMap(&v1alpha1.ClusterMap{
Map: map[string]*v1alpha1.Cluster{
childClusterID: {
Parent: parentClusterID,
Sources: []v1alpha1.KubeconfigSource{
{
Type: v1alpha1.KubeconfigSourceTypeClusterAPI,
},
},
},
parentClusterID: {
Sources: []v1alpha1.KubeconfigSource{
{
Type: v1alpha1.KubeconfigSourceTypeBundle,
Bundle: v1alpha1.KubeconfigSourceBundle{
Context: "parent_parent_context",
},
},
},
},
},
}),
},
{
name: "success two clusters",
expectedContexts: []string{parentClusterID, parentParentClusterID},
expectedClusters: []string{"dummycluster_ephemeral", parentParentCluster},
expectedAuthInfos: []string{"kubernetes-admin", parentParentUser},
siteWide: true,
clusterMap: clustermap.NewClusterMap(&v1alpha1.ClusterMap{
Map: map[string]*v1alpha1.Cluster{
parentParentClusterID: {
Sources: []v1alpha1.KubeconfigSource{
{
Type: v1alpha1.KubeconfigSourceTypeBundle,
Bundle: v1alpha1.KubeconfigSourceBundle{
Context: "parent_parent_context",
},
},
},
},
parentClusterID: {
Sources: []v1alpha1.KubeconfigSource{
{
Type: v1alpha1.KubeconfigSourceTypeFilesystem,
FileSystem: v1alpha1.KubeconfigSourceFilesystem{
Path: "testdata/kubeconfig",
Context: "dummy_cluster",
},
},
},
},
},
}),
},
{
name: "success three clusters cluster-api",
expectedContexts: []string{parentClusterID, childClusterID, parentParentClusterID},
expectedClusters: []string{parentCluster, parentParentCluster, childCluster},
expectedAuthInfos: []string{parentUser, parentParentUser, childUser},
siteWide: true,
clusterMap: clustermap.NewClusterMap(&v1alpha1.ClusterMap{
Map: map[string]*v1alpha1.Cluster{
childClusterID: {
Parent: parentClusterID,
Sources: []v1alpha1.KubeconfigSource{
{
Type: v1alpha1.KubeconfigSourceTypeClusterAPI,
ClusterAPI: v1alpha1.KubeconfigSourceClusterAPI{
NamespacedName: v1alpha1.NamespacedName{
Name: childClusterID,
Namespace: "target-infra",
},
},
},
},
},
parentClusterID: {
Sources: []v1alpha1.KubeconfigSource{
{
Type: v1alpha1.KubeconfigSourceTypeClusterAPI,
ClusterAPI: v1alpha1.KubeconfigSourceClusterAPI{
NamespacedName: v1alpha1.NamespacedName{
Name: parentClusterID,
Namespace: "target-infra",
},
},
},
},
Parent: parentParentClusterID,
},
parentParentClusterID: {
Sources: []v1alpha1.KubeconfigSource{
{
Type: v1alpha1.KubeconfigSourceTypeBundle,
},
},
},
},
}),
tempRoot: "testdata",
fs: testfs.MockFileSystem{
MockRemoveAll: func() error { return nil },
MockTempFile: func(s1, s2 string) (fs.File, error) {
return testfs.TestFile{
MockName: func() string { return kubeconfigPath },
MockWrite: func([]byte) (int, error) { return 0, nil },
MockClose: func() error { return nil },
}, nil
},
},
client: func() MockCoreV1Interface {
ms := &SecretMockInterface{
Mock: mock.Mock{},
}
ms.On("Get", parentClusterID+"-kubeconfig", metav1.GetOptions{}).
Once().Return(&apiv1.Secret{Data: map[string][]byte{"value": []byte(testKubeconfigString)}}, nil)
ms.On("Get", childClusterID+"-kubeconfig", metav1.GetOptions{}).
Once().Return(&apiv1.Secret{Data: map[string][]byte{"value": []byte(testKubeconfigStringSecond)}}, nil)
mc := MockCoreV1Interface{MockSecrets: func(s string) corev1.SecretInterface {
return ms
}}
return mc
}(),
},
{
name: "error requested cluster doesn't exist",
errString: "is not defined in cluster map",
requestedClusterName: "non-existent-cluster",
clusterMap: clustermap.NewClusterMap(&v1alpha1.ClusterMap{
Map: map[string]*v1alpha1.Cluster{
parentParentClusterID: {
Sources: []v1alpha1.KubeconfigSource{
{
Type: v1alpha1.KubeconfigSourceTypeBundle,
Bundle: v1alpha1.KubeconfigSourceBundle{
Context: "parent_parent_context",
},
},
},
},
},
}),
},
}
for _, tt := range tests {
tt := tt
t.Run(tt.name, func(t *testing.T) {
kube := kubeconfig.NewBuilder().
WithClusterMap(tt.clusterMap).
WithClusterNames(tt.requestedClusterName).
WithBundle(testBundle).
WithTempRoot(tt.tempRoot).
WithCoreV1Client(tt.client).
WithFilesystem(tt.fs).
SiteWide(tt.siteWide).
Build()
require.NotNil(t, kube)
filePath, cleanup, err := kube.GetFile()
// This is needed to avoid leftovers on test failures
if cleanup != nil {
defer cleanup()
}
if tt.errString != "" {
require.Error(t, err)
assert.Contains(t, err.Error(), tt.errString)
assert.Equal(t, "", filePath)
} else {
require.NoError(t, err)
assert.NotEqual(t, "", filePath)
assert.NotNil(t, cleanup)
buf := bytes.NewBuffer([]byte{})
err := kube.Write(buf)
require.NoError(t, err)
compareResults(t, tt.expectedContexts, tt.expectedClusters, tt.expectedAuthInfos, buf.Bytes())
}
})
}
}
func compareResults(t *testing.T, contexts, clusters, authInfos []string, kubeconfBytes []byte) {
t.Helper()
resultKubeconf, err := clientcmd.Load(kubeconfBytes)
require.NoError(t, err)
assert.Len(t, resultKubeconf.Contexts, len(contexts))
for _, name := range contexts {
assert.Contains(t, resultKubeconf.Contexts, name)
}
assert.Len(t, resultKubeconf.AuthInfos, len(authInfos))
for _, name := range authInfos {
assert.Contains(t, resultKubeconf.AuthInfos, name)
}
assert.Len(t, resultKubeconf.Clusters, len(clusters))
for _, name := range clusters {
assert.Contains(t, resultKubeconf.Clusters, name)
}
}