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Merge pull request #6341 from jayunit100/networking-test-reorder
Reorder/Modularize networking e2e + pod launch phase, clean up comments.
This commit is contained in:
Satnam Singh
commit
d0dcc379cb
@ -29,6 +29,62 @@ import (
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. "github.com/onsi/gomega"
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)
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var _ = BeforeSuite(func() {
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//Assert basic external connectivity.
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//Since this is not really a test of kubernetes in any way, we
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//leave it as a pre-test assertion, rather than a Ginko test.
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By("Executing a successfull http request from the external internet")
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resp, err := http.Get("http://google.com")
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if err != nil {
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Failf("Unable to connect/talk to the internet: %v", err)
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}
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if resp.StatusCode != http.StatusOK {
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Failf("Unexpected error code, expected 200, got, %v (%v)", resp.StatusCode, resp)
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}
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})
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func LaunchNetTestPodPerNode(nodes *api.NodeList, name string, c *client.Client, ns string) []string {
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podNames := []string{}
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totalPods := len(nodes.Items)
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Expect(totalPods).NotTo(Equal(0))
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for i, node := range nodes.Items {
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podName := fmt.Sprintf("%s-%d", name, i)
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podNames = append(podNames, podName)
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Logf("Creating pod %s on node %s", podName, node.Name)
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_, err := c.Pods(ns).Create(&api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: podName,
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Labels: map[string]string{
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"name": name,
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},
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: "webserver",
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Image: "gcr.io/google_containers/nettest:1.1",
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Args: []string{
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"-service=" + name,
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//peers >= totalPods should be asserted by the container.
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//the nettest container finds peers by looking up list of svc endpoints.
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fmt.Sprintf("-peers=%d", totalPods),
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"-namespace=" + ns},
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Ports: []api.ContainerPort{{ContainerPort: 8080}},
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},
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},
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Host: node.Name,
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RestartPolicy: api.RestartPolicyNever,
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},
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})
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Expect(err).NotTo(HaveOccurred())
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}
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return podNames
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}
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var _ = Describe("Networking", func() {
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var c *client.Client
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@ -38,37 +94,38 @@ var _ = Describe("Networking", func() {
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Expect(err).NotTo(HaveOccurred())
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})
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// First test because it has no dependencies on variables created later on.
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It("should provide unchanging, static URL paths for kubernetes api services.", func() {
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tests := []struct {
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path string
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}{
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{path: "/validate"},
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{path: "/healthz"},
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// TODO: test proxy links here
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}
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for _, test := range tests {
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By(fmt.Sprintf("testing: %s", test.path))
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data, err := c.RESTClient.Get().
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Namespace(api.NamespaceDefault).
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AbsPath(test.path).
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DoRaw()
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if err != nil {
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Failf("Failed: %v\nBody: %s", err, string(data))
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}
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}
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})
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// Create a unique namespace for this test.
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ns := "nettest-" + randomSuffix()
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name := "nettest"
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It("should function for pods", func() {
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It("should function for intra-pod communication", func() {
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if testContext.Provider == "vagrant" {
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By("Skipping test which is broken for vagrant (See https://github.com/GoogleCloudPlatform/kubernetes/issues/3580)")
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return
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}
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// Obtain a list of nodes so we can place one webserver container on each node.
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nodes, err := c.Nodes().List()
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if err != nil {
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Failf("Failed to list nodes: %v", err)
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}
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peers := len(nodes.Items)
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if peers == 0 {
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Failf("Failed to find any nodes")
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}
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// Test basic external connectivity.
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resp, err := http.Get("http://google.com/")
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if err != nil {
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Failf("unable to talk to the external internet: %v", err)
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}
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if resp.StatusCode != http.StatusOK {
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Failf("unexpected error code. expected 200, got: %v (%v)", resp.StatusCode, resp)
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}
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name := "nettest"
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By(fmt.Sprintf("Creating service with name %s in namespace %s", name, ns))
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By(fmt.Sprintf("Creating a service named [%s] in namespace %s", name, ns))
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svc, err := c.Services(ns).Create(&api.Service{
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ObjectMeta: api.ObjectMeta{
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Name: name,
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@ -88,8 +145,9 @@ var _ = Describe("Networking", func() {
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},
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})
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if err != nil {
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Failf("unable to create test service %s: %v", svc.Name, err)
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Failf("unable to create test service named [%s] %v", svc.Name, err)
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}
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// Clean up service
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defer func() {
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defer GinkgoRecover()
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@ -99,37 +157,15 @@ var _ = Describe("Networking", func() {
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}
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}()
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By("Creating a webserver pod on each node")
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podNames := []string{}
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for i, node := range nodes.Items {
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podName := fmt.Sprintf("%s-%d", name, i)
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podNames = append(podNames, podName)
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Logf("Creating pod %s on node %s", podName, node.Name)
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_, err := c.Pods(ns).Create(&api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: podName,
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Labels: map[string]string{
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"name": name,
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},
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: "webserver",
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Image: "gcr.io/google_containers/nettest:1.1",
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Args: []string{
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"-service=" + name,
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fmt.Sprintf("-peers=%d", peers),
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"-namespace=" + ns},
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Ports: []api.ContainerPort{{ContainerPort: 8080}},
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},
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},
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Host: node.Name,
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RestartPolicy: api.RestartPolicyNever,
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},
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})
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Expect(err).NotTo(HaveOccurred())
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By("Creating a webserver (pending) pod on each node")
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nodes, err := c.Nodes().List()
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if err != nil {
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Failf("Failed to list nodes: %v", err)
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}
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podNames := LaunchNetTestPodPerNode(nodes, name, c, ns)
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// Clean up the pods
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defer func() {
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defer GinkgoRecover()
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@ -141,7 +177,7 @@ var _ = Describe("Networking", func() {
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}
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}()
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By("Wait for the webserver pods to be ready")
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By("Waiting for the webserver pods to transition to Running state")
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for _, podName := range podNames {
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err = waitForPodRunningInNamespace(c, podName, ns)
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Expect(err).NotTo(HaveOccurred())
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@ -150,7 +186,10 @@ var _ = Describe("Networking", func() {
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By("Waiting for connectivity to be verified")
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const maxAttempts = 60
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passed := false
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//once response OK, evaluate response body for pass/fail.
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var body []byte
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for i := 0; i < maxAttempts && !passed; i++ {
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time.Sleep(2 * time.Second)
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Logf("About to make a proxy status call")
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@ -167,6 +206,7 @@ var _ = Describe("Networking", func() {
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Logf("Attempt %v/%v: service/pod still starting. (error: '%v')", i, maxAttempts, err)
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continue
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}
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//Finally, we pass/fail the test based on if the container's response body, as to wether or not it was able to find peers.
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switch string(body) {
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case "pass":
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Logf("Passed on attempt %v. Cleaning up.", i)
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@ -205,23 +245,4 @@ var _ = Describe("Networking", func() {
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Expect(string(body)).To(Equal("pass"))
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})
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It("should provide unchanging URLs", func() {
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tests := []struct {
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path string
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}{
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{path: "/validate"},
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{path: "/healthz"},
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// TODO: test proxy links here
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}
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for _, test := range tests {
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By(fmt.Sprintf("testing: %s", test.path))
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data, err := c.RESTClient.Get().
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Namespace(ns).
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AbsPath(test.path).
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DoRaw()
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if err != nil {
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Failf("Failed: %v\nBody: %s", err, string(data))
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}
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}
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})
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})
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