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https://github.com/k3s-io/kubernetes.git
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d33e66b81b
Pulling the CreateKubeConfig function from the expensive to build test/utils/apiserver package had a considerable impact on the overall build time because that package depends on a lot of other packages. Because only that one function is needed by the framework, that extra build time can be avoided by moving it into its own package.
103 lines
3.5 KiB
Go
103 lines
3.5 KiB
Go
/*
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Copyright 2022 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 apiserver
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import (
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"path"
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"testing"
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"github.com/google/uuid"
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"k8s.io/apiserver/pkg/server/dynamiccertificates"
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etcdserver "k8s.io/apiserver/pkg/storage/etcd3/testserver"
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"k8s.io/apiserver/pkg/storage/storagebackend"
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clientset "k8s.io/client-go/kubernetes"
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"k8s.io/client-go/rest"
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"k8s.io/client-go/tools/clientcmd"
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"k8s.io/client-go/util/cert"
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kubeapiservertesting "k8s.io/kubernetes/cmd/kube-apiserver/app/testing"
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"k8s.io/kubernetes/test/utils/kubeconfig"
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)
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// TestAPIServer provides access to a running apiserver instance.
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type TestAPIServer struct {
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// ClientSet is already initialized to access the apiserver as admin.
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ClientSet clientset.Interface
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// KubeConfigFile is the absolute path for a kube.config file that
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// grants admin access to the apiserver.
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KubeConfigFile string
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}
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// StartAPIServer runs etcd and apiserver in the background in the same
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// process. All resources get released automatically when the test
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// completes. If startup fails, the test gets aborted.
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func StartAPITestServer(t *testing.T) TestAPIServer {
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cfg := etcdserver.NewTestConfig(t)
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etcdClient := etcdserver.RunEtcd(t, cfg)
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storageConfig := storagebackend.NewDefaultConfig(path.Join(uuid.New().String(), "registry"), nil)
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storageConfig.Transport.ServerList = etcdClient.Endpoints()
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server := kubeapiservertesting.StartTestServerOrDie(t, nil, []string{}, storageConfig)
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t.Cleanup(server.TearDownFn)
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clientSet := clientset.NewForConfigOrDie(server.ClientConfig)
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kubeConfigFile := writeKubeConfigForWardleServerToKASConnection(t, server.ClientConfig)
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return TestAPIServer{
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ClientSet: clientSet,
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KubeConfigFile: kubeConfigFile,
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}
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}
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func writeKubeConfigForWardleServerToKASConnection(t *testing.T, kubeClientConfig *rest.Config) string {
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// write a kubeconfig out for starting other API servers with delegated auth. remember, no in-cluster config
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// the loopback client config uses a loopback cert with different SNI. We need to use the "real"
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// cert, so we'll hope we aren't hacked during a unit test and instead load it from the server we started.
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wardleToKASKubeClientConfig := rest.CopyConfig(kubeClientConfig)
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servingCerts, _, err := cert.GetServingCertificatesForURL(wardleToKASKubeClientConfig.Host, "")
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if err != nil {
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t.Fatal(err)
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}
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encodedServing, err := cert.EncodeCertificates(servingCerts...)
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if err != nil {
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t.Fatal(err)
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}
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wardleToKASKubeClientConfig.CAData = encodedServing
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for _, v := range servingCerts {
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t.Logf("Client: Server public key is %v\n", dynamiccertificates.GetHumanCertDetail(v))
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}
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certs, err := cert.ParseCertsPEM(wardleToKASKubeClientConfig.CAData)
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if err != nil {
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t.Fatal(err)
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}
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for _, curr := range certs {
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t.Logf("CA bundle %v\n", dynamiccertificates.GetHumanCertDetail(curr))
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}
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adminKubeConfig := kubeconfig.CreateKubeConfig(wardleToKASKubeClientConfig)
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tmpDir := t.TempDir()
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kubeConfigFile := path.Join(tmpDir, "kube.config")
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if err := clientcmd.WriteToFile(*adminKubeConfig, kubeConfigFile); err != nil {
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t.Fatal(err)
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}
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return kubeConfigFile
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}
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