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fixture.go
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fixture.go
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package e2e
import (
"fmt"
"log"
"net"
"os"
"os/exec"
"testing"
"time"
"github.com/argoproj/argo-cd/common"
"github.com/argoproj/argo-cd/controller"
"github.com/argoproj/argo-cd/install"
"github.com/argoproj/argo-cd/pkg/apis/application/v1alpha1"
appclientset "github.com/argoproj/argo-cd/pkg/client/clientset/versioned"
"github.com/argoproj/argo-cd/reposerver"
"github.com/argoproj/argo-cd/server/cluster"
apirepository "github.com/argoproj/argo-cd/server/repository"
"google.golang.org/grpc"
"k8s.io/api/core/v1"
apiextensionsclient "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
)
const (
TestTimeout = time.Minute * 3
)
// Fixture represents e2e tests fixture.
type Fixture struct {
Config *rest.Config
KubeClient kubernetes.Interface
ExtensionsClient apiextensionsclient.Interface
AppClient appclientset.Interface
ApiRepoService apirepository.RepositoryServiceServer
RepoClientset reposerver.Clientset
AppComparator controller.AppComparator
Namespace string
InstanceID string
repoServerGRPC *grpc.Server
repoServerListener net.Listener
}
func createNamespace(kubeClient *kubernetes.Clientset) (string, error) {
ns := &v1.Namespace{
ObjectMeta: metav1.ObjectMeta{
GenerateName: "argo-e2e-test-",
},
}
cns, err := kubeClient.CoreV1().Namespaces().Create(ns)
if err != nil {
return "", err
}
return cns.Name, nil
}
func (f *Fixture) setup() error {
installer, err := install.NewInstaller(f.Config, install.InstallOptions{})
if err != nil {
return err
}
listener, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
return err
}
f.repoServerListener = listener
go func() {
err = f.repoServerGRPC.Serve(listener)
}()
installer.InstallApplicationCRD()
return err
}
// TearDown deletes fixture resources.
func (f *Fixture) TearDown() {
err := f.KubeClient.CoreV1().Namespaces().Delete(f.Namespace, &metav1.DeleteOptions{})
if err != nil {
f.repoServerGRPC.Stop()
}
if err != nil {
println("Unable to tear down fixture")
}
}
// GetKubeConfig creates new kubernetes client config using specified config path and config overrides variables
func GetKubeConfig(configPath string, overrides clientcmd.ConfigOverrides) *rest.Config {
loadingRules := clientcmd.NewDefaultClientConfigLoadingRules()
loadingRules.ExplicitPath = configPath
clientConfig := clientcmd.NewInteractiveDeferredLoadingClientConfig(loadingRules, &overrides, os.Stdin)
var err error
restConfig, err := clientConfig.ClientConfig()
if err != nil {
log.Fatal(err)
}
return restConfig
}
// NewFixture creates e2e tests fixture.
func NewFixture() (*Fixture, error) {
config := GetKubeConfig("", clientcmd.ConfigOverrides{})
extensionsClient := apiextensionsclient.NewForConfigOrDie(config)
appClient := appclientset.NewForConfigOrDie(config)
kubeClient := kubernetes.NewForConfigOrDie(config)
namespace, err := createNamespace(kubeClient)
clusterService := cluster.NewServer(namespace, kubeClient, appClient)
repoServerGRPC := reposerver.NewServer(kubeClient, namespace).CreateGRPC(&FakeGitClient{})
if err != nil {
return nil, err
}
appComparator := controller.NewKsonnetAppComparator(clusterService)
fixture := &Fixture{
Config: config,
ExtensionsClient: extensionsClient,
AppClient: appClient,
KubeClient: kubeClient,
Namespace: namespace,
InstanceID: namespace,
ApiRepoService: apirepository.NewServer(namespace, kubeClient, appClient),
AppComparator: appComparator,
repoServerGRPC: repoServerGRPC,
}
err = fixture.setup()
if err != nil {
return nil, err
}
return fixture, nil
}
// CreateApp creates application with appropriate controller instance id.
func (f *Fixture) CreateApp(t *testing.T, application *v1alpha1.Application) *v1alpha1.Application {
labels := application.ObjectMeta.Labels
if labels == nil {
labels = make(map[string]string)
application.ObjectMeta.Labels = labels
}
labels[common.LabelKeyApplicationControllerInstanceID] = f.InstanceID
app, err := f.AppClient.ArgoprojV1alpha1().Applications(f.Namespace).Create(application)
if err != nil {
t.Fatal(fmt.Sprintf("Unable to create app %v", err))
}
return app
}
// CreateController creates new controller instance
func (f *Fixture) CreateController() *controller.ApplicationController {
return controller.NewApplicationController(
f.Namespace,
f.KubeClient,
f.AppClient,
reposerver.NewRepositoryServerClientset(f.repoServerListener.Addr().String()),
f.ApiRepoService,
cluster.NewServer(f.Namespace, f.KubeClient, f.AppClient),
f.AppComparator,
time.Second,
&controller.ApplicationControllerConfig{Namespace: f.Namespace, InstanceID: f.InstanceID})
}
// PollUntil periodically executes specified condition until it returns true.
func PollUntil(t *testing.T, condition wait.ConditionFunc) {
stop := make(chan struct{})
isClosed := false
makeSureClosed := func() {
if !isClosed {
close(stop)
isClosed = true
}
}
defer makeSureClosed()
go func() {
time.Sleep(TestTimeout)
makeSureClosed()
}()
err := wait.PollUntil(time.Second, condition, stop)
if err != nil {
t.Fatal("Failed to wait for expected condition")
}
}
// FakeGitClient is a test git client implementation which always clone local test repo.
type FakeGitClient struct {
}
func (c *FakeGitClient) CloneOrFetch(repo string, username string, password string, sshPrivateKey string, repoPath string) error {
_, err := exec.Command("rm", "-rf", repoPath).Output()
if err != nil {
return err
}
_, err = exec.Command("cp", "-r", "../../examples/guestbook", repoPath).Output()
return err
}
func (c *FakeGitClient) Checkout(repoPath string, sha string) (string, error) {
// do nothing
return "latest", nil
}
func (c *FakeGitClient) Reset(repoPath string) error {
// do nothing
return nil
}
func (c *FakeGitClient) CommitSHA(repoPath string) (string, error) {
return "abcdef123456890", nil
}