Generalized namespace creation pattern for test utils

test/e2e/networking.go

@@ -23,6 +23,8 @@ import (
 
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/client"
+	//"github.com/GoogleCloudPlatform/kubernetes/pkg/client/clientcmd"
+	//"github.com/GoogleCloudPlatform/kubernetes/pkg/clientauth"
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/fields"
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
@@ -77,7 +79,7 @@ func LaunchNetTestPodPerNode(nodes *api.NodeList, name string, c *client.Client,
 var _ = Describe("Networking", func() {
 
 	//This namespace is modified throughout the course of the test.
-	var namespaceObj *api.Namespace
+	var namespace *api.Namespace
 	var svcname = "nettest"
 	var c *client.Client = nil
 
@@ -94,30 +96,19 @@ var _ = Describe("Networking", func() {
 			Failf("Unexpected error code, expected 200, got, %v (%v)", resp.StatusCode, resp)
 		}
 
-		By("Building a namespace api object")
-		var ns = svcname + "-" + randomSuffix()
-
-		namespaceObj = &api.Namespace{
-			ObjectMeta: api.ObjectMeta{
-				Name:      ns,
-				Namespace: "",
-			},
-			Status: api.NamespaceStatus{},
-		}
-
 		By("Creating a kubernetes client")
 		c, err = loadClient()
 		Expect(err).NotTo(HaveOccurred())
 
-		By("Creating a namespace for this test suite")
-		_, err = c.Namespaces().Create(namespaceObj)
+		By("Building a namespace api object")
+		namespace, err = createTestingNS("nettest", c)
 		Expect(err).NotTo(HaveOccurred())
 
 	})
 
 	AfterEach(func() {
-		By("Destroying namespace for this suite")
-		if err := c.Namespaces().Delete(namespaceObj.Name); err != nil {
+		By(fmt.Sprintf("Destroying namespace for this suite %v", namespace.Name))
+		if err := c.Namespaces().Delete(namespace.Name); err != nil {
 			Failf("Couldn't delete ns %s", err)
 		}
 	})
@@ -134,7 +125,7 @@ var _ = Describe("Networking", func() {
 		for _, test := range tests {
 			By(fmt.Sprintf("testing: %s", test.path))
 			data, err := c.RESTClient.Get().
-				Namespace(api.NamespaceDefault).
+				Namespace(namespace.Name).
 				AbsPath(test.path).
 				DoRaw()
 			if err != nil {
@@ -143,9 +134,6 @@ var _ = Describe("Networking", func() {
 		}
 	})
 
-	// Create a unique namespace for this test.
-	ns := "nettest-" + randomSuffix()
-
 	//Now we can proceed with the test.
 	It("should function for intra-pod communication", func() {
 
@@ -154,8 +142,8 @@ var _ = Describe("Networking", func() {
 			return
 		}
 
-		By(fmt.Sprintf("Creating a service named [%s] in namespace %s", svcname, ns))
-		svc, err := c.Services(ns).Create(&api.Service{
+		By(fmt.Sprintf("Creating a service named [%s] in namespace %s", svcname, namespace.Name))
+		svc, err := c.Services(namespace.Name).Create(&api.Service{
 			ObjectMeta: api.ObjectMeta{
 				Name: svcname,
 				Labels: map[string]string{
@@ -181,7 +169,7 @@ var _ = Describe("Networking", func() {
 		defer func() {
 			defer GinkgoRecover()
 			By("Cleaning up the service")
-			if err = c.Services(ns).Delete(svc.Name); err != nil {
+			if err = c.Services(namespace.Name).Delete(svc.Name); err != nil {
 				Failf("unable to delete svc %v: %v", svc.Name, err)
 			}
 		}()
@@ -193,14 +181,14 @@ var _ = Describe("Networking", func() {
 			Failf("Failed to list nodes: %v", err)
 		}
 
-		podNames := LaunchNetTestPodPerNode(nodes, svcname, c, ns)
+		podNames := LaunchNetTestPodPerNode(nodes, svcname, c, namespace.Name)
 
 		// Clean up the pods
 		defer func() {
 			defer GinkgoRecover()
 			By("Cleaning up the webserver pods")
 			for _, podName := range podNames {
-				if err = c.Pods(ns).Delete(podName); err != nil {
+				if err = c.Pods(namespace.Name).Delete(podName); err != nil {
 					Logf("Failed to delete pod %s: %v", podName, err)
 				}
 			}
@@ -208,7 +196,7 @@ var _ = Describe("Networking", func() {
 
 		By("Waiting for the webserver pods to transition to Running state")
 		for _, podName := range podNames {
-			err = waitForPodRunningInNamespace(c, podName, ns)
+			err = waitForPodRunningInNamespace(c, podName, namespace.Name)
 			Expect(err).NotTo(HaveOccurred())
 		}
 
@@ -224,7 +212,7 @@ var _ = Describe("Networking", func() {
 			Logf("About to make a proxy status call")
 			start := time.Now()
 			body, err = c.Get().
-				Namespace(ns).
+				Namespace(namespace.Name).
 				Prefix("proxy").
 				Resource("services").
 				Name(svc.Name).
@@ -246,7 +234,7 @@ var _ = Describe("Networking", func() {
 				break
 			case "fail":
 				if body, err = c.Get().
-					Namespace(ns).Prefix("proxy").
+					Namespace(namespace.Name).Prefix("proxy").
 					Resource("services").
 					Name(svc.Name).Suffix("read").
 					DoRaw(); err != nil {
@@ -260,7 +248,7 @@ var _ = Describe("Networking", func() {
 
 		if !passed {
 			if body, err = c.Get().
-				Namespace(ns).
+				Namespace(namespace.Name).
 				Prefix("proxy").
 				Resource("services").
 				Name(svc.Name).

test/e2e/util.go

@@ -81,6 +81,19 @@ func waitForPodCondition(c *client.Client, ns, podName, desc string, condition p
 	return fmt.Errorf("gave up waiting for pod %s to be %s after %.2f seconds", podName, desc, podStartTimeout.Seconds())
 }
 
+// createNS should be used by every test, note that we append a common prefix to the provided test name.
+func createTestingNS(baseName string, c *client.Client) (*api.Namespace, error) {
+	namespaceObj := &api.Namespace{
+		ObjectMeta: api.ObjectMeta{
+			Name:      fmt.Sprintf("e2e-tests-%v-%v", baseName, randomSuffix()),
+			Namespace: "",
+		},
+		Status: api.NamespaceStatus{},
+	}
+	_, err := c.Namespaces().Create(namespaceObj)
+	return namespaceObj, err
+}
+
 func waitForPodRunningInNamespace(c *client.Client, podName string, namespace string) error {
 	return waitForPodCondition(c, namespace, podName, "running", func(pod *api.Pod) (bool, error) {
 		return (pod.Status.Phase == api.PodRunning), nil
@@ -179,6 +192,8 @@ func loadClient() (*client.Client, error) {
 	return c, nil
 }
 
+// randomSuffix provides a random string to append to pods,services,rcs.
+// NOTE: For test's namespaces, instead use createGinkgoNS(..).
 // TODO: Allow service names to have the same form as names
 //       for pods and replication controllers so we don't
 //       need to use such a function and can instead
@@ -269,6 +284,7 @@ func validateController(c *client.Client, containerImage string, replicas int, c
 	Failf("Timed out after %v seconds waiting for %s pods to reach valid state", podStartTimeout.Seconds(), testname)
 }
 
+// kubectlCmd runs the kubectl executable.
 // kubectlCmd runs the kubectl executable.
 func kubectlCmd(args ...string) *exec.Cmd {
 	defaultArgs := []string{}