Golang CLI.REST方法代码示例

// waitForAnImageStreamTag waits until an image stream with given name has non-empty history for given tag
func waitForAnImageStreamTag(oc *exutil.CLI, name, tag string) error {
	g.By(fmt.Sprintf("waiting for an is importer to import a tag %s into a stream %s", tag, name))
	start := time.Now()
	c := make(chan error)
	go func() {
		err := exutil.WaitForAnImageStream(
			oc.REST().ImageStreams(oc.Namespace()),
			name,
			func(is *imageapi.ImageStream) bool {
				if history, exists := is.Status.Tags[tag]; !exists || len(history.Items) == 0 {
					return false
				}
				return true
			},
			func(is *imageapi.ImageStream) bool {
				return time.Now().After(start.Add(waitTimeout))
			})
		c <- err
	}()

	select {
	case e := <-c:
		return e
	case <-time.After(waitTimeout):
		return fmt.Errorf("timed out while waiting of an image stream tag %s/%s:%s", oc.Namespace(), name, tag)
	}
}

// ensureRegistryAcceptsSchema2 checks whether the registry is configured to accept manifests V2 schema 2 or
// not. If the result doesn't match given accept argument, registry's deployment config is updated accordingly
// and the function blocks until the registry is re-deployed and ready for new requests.
func ensureRegistryAcceptsSchema2(oc *exutil.CLI, accept bool) error {
	ns := oc.Namespace()
	oc = oc.SetNamespace(kapi.NamespaceDefault).AsAdmin()
	defer oc.SetNamespace(ns)
	env, err := oc.Run("env").Args("dc/docker-registry", "--list").Output()
	if err != nil {
		return err
	}

	value := fmt.Sprintf("%s=%t", dockerregistryserver.AcceptSchema2EnvVar, accept)
	if strings.Contains(env, value) {
		if accept {
			g.By("docker-registry is already configured to accept schema 2")
		} else {
			g.By("docker-registry is already configured to refuse schema 2")
		}
		return nil
	}

	dc, err := oc.REST().DeploymentConfigs(kapi.NamespaceDefault).Get("docker-registry")
	if err != nil {
		return err
	}
	waitForVersion := dc.Status.LatestVersion + 1

	g.By("configuring Docker registry to accept schema 2")
	err = oc.Run("env").Args("dc/docker-registry", value).Execute()
	if err != nil {
		return fmt.Errorf("failed to update registry's environment with %s: %v", &waitForVersion, err)
	}
	return exutil.WaitForRegistry(oc.AdminREST(), oc.AdminKubeREST(), &waitForVersion, oc)
}

// buildAndPushTestImagesTo builds a given number of test images. The images are pushed to a new image stream
// of given name under <tagPrefix><X> where X is a number of image starting from 1.
func buildAndPushTestImagesTo(oc *exutil.CLI, isName string, tagPrefix string, numberOfImages int) (tag2Image map[string]imageapi.Image, err error) {
	dClient, err := testutil.NewDockerClient()
	if err != nil {
		return
	}
	tag2Image = make(map[string]imageapi.Image)

	for i := 1; i <= numberOfImages; i++ {
		tag := fmt.Sprintf("%s%d", tagPrefix, i)
		dgst, err := BuildAndPushImageOfSizeWithDocker(oc, dClient, isName, tag, imageSize, 2, g.GinkgoWriter, true)
		if err != nil {
			return nil, err
		}
		ist, err := oc.REST().ImageStreamTags(oc.Namespace()).Get(isName, tag)
		if err != nil {
			return nil, err
		}
		if dgst != ist.Image.Name {
			return nil, fmt.Errorf("digest of built image does not match stored: %s != %s", dgst, ist.Image.Name)
		}
		tag2Image[tag] = ist.Image
	}

	return
}

func assertEnvVars(oc *exutil.CLI, buildPrefix string, varsToFind map[string]string) {

	buildList, err := oc.REST().Builds(oc.Namespace()).List(kapi.ListOptions{})
	o.Expect(err).NotTo(o.HaveOccurred())

	// Ensure that expected start-build environment variables were injected
	for _, build := range buildList.Items {
		ginkgolog("Found build: %q", build.GetName())
		if strings.HasPrefix(build.GetName(), buildPrefix) {
			envs := []kapi.EnvVar{}
			if build.Spec.Strategy.DockerStrategy != nil && build.Spec.Strategy.DockerStrategy.Env != nil {
				envs = build.Spec.Strategy.DockerStrategy.Env
			} else if build.Spec.Strategy.SourceStrategy != nil && build.Spec.Strategy.SourceStrategy.Env != nil {
				envs = build.Spec.Strategy.SourceStrategy.Env
			} else {
				continue
			}

			for k, v := range varsToFind {
				found := false
				for _, env := range envs {
					ginkgolog("Found %s=%s in build %s", env.Name, env.Value, build.GetName())
					if k == env.Name && v == env.Value {
						found = true
						break
					}
				}
				o.ExpectWithOffset(1, found).To(o.BeTrue())
			}
		}
	}
}

func waitForSyncedConfig(oc *exutil.CLI, name string, timeout time.Duration) error {
	dc, rcs, pods, err := deploymentInfo(oc, name)
	if err != nil {
		return err
	}
	if err := checkDeploymentInvariants(dc, rcs, pods); err != nil {
		return err
	}
	generation := dc.Generation
	return wait.PollImmediate(200*time.Millisecond, timeout, func() (bool, error) {
		config, err := oc.REST().DeploymentConfigs(oc.Namespace()).Get(name)
		if err != nil {
			return false, err
		}
		return deployutil.HasSynced(config, generation), nil
	})
}

// buildAndPushImage tries to build an image. The image is stored as an image stream tag <name>:<tag>. If
// shouldBeDenied is true, a build will be expected to fail with a denied error.
func buildAndPushImage(oc *exutil.CLI, namespace, name, tag string, shouldBeDenied bool) {
	istName := name
	if tag != "" {
		istName += ":" + tag
	}
	g.By(fmt.Sprintf("building an image %q", istName))

	bc, err := oc.REST().BuildConfigs(namespace).Get(name)
	if err == nil {
		g.By(fmt.Sprintf("changing build config %s to store result into %s", name, istName))
		o.Expect(bc.Spec.BuildSpec.Output.To.Kind).To(o.Equal("ImageStreamTag"))
		bc.Spec.BuildSpec.Output.To.Name = istName
		_, err := oc.REST().BuildConfigs(namespace).Update(bc)
		o.Expect(err).NotTo(o.HaveOccurred())
	} else {
		g.By(fmt.Sprintf("creating a new build config %s with output to %s ", name, istName))
		err = oc.Run("new-build").Args(
			"--binary",
			"--name", name,
			"--to", istName).Execute()
		o.Expect(err).NotTo(o.HaveOccurred())
	}

	tempDir, err := ioutil.TempDir("", "name-build")
	o.Expect(err).NotTo(o.HaveOccurred())

	err = createRandomBlob(path.Join(tempDir, "data"), imageSize)
	o.Expect(err).NotTo(o.HaveOccurred())
	err = ioutil.WriteFile(path.Join(tempDir, "Dockerfile"), []byte("FROM scratch\nCOPY data /data\n"), 0644)
	o.Expect(err).NotTo(o.HaveOccurred())

	err = oc.Run("start-build").Args(name, "--from-dir", tempDir, "--wait").Execute()
	if shouldBeDenied {
		o.Expect(err).To(o.HaveOccurred())
		out, err := oc.Run("logs").Args("bc/" + name).Output()
		o.Expect(err).NotTo(o.HaveOccurred())
		o.Expect(out).Should(o.MatchRegexp("(?i)Failed to push image:.*denied"))
	} else {
		o.Expect(err).NotTo(o.HaveOccurred())
	}
}

func replicationTestFactory(oc *exutil.CLI, template string) func() {
	return func() {
		oc.SetOutputDir(exutil.TestContext.OutputDir)
		defer cleanup(oc)

		_, err := exutil.SetupHostPathVolumes(oc.AdminKubeREST().PersistentVolumes(), oc.Namespace(), "512Mi", 1)
		o.Expect(err).NotTo(o.HaveOccurred())

		err = testutil.WaitForPolicyUpdate(oc.REST(), oc.Namespace(), "create", "templates", true)
		o.Expect(err).NotTo(o.HaveOccurred())

		err = oc.Run("new-app").Args("-f", template).Execute()
		o.Expect(err).NotTo(o.HaveOccurred())

		err = oc.Run("new-app").Args("-f", helperTemplate, "-p", fmt.Sprintf("DATABASE_SERVICE_NAME=%s", helperName)).Execute()
		o.Expect(err).NotTo(o.HaveOccurred())
		err = oc.KubeFramework().WaitForAnEndpoint(helperName)
		o.Expect(err).NotTo(o.HaveOccurred())

		tableCounter := 0
		assertReplicationIsWorking := func(masterDeployment, slaveDeployment string, slaveCount int) (exutil.Database, []exutil.Database, exutil.Database) {
			tableCounter++
			table := fmt.Sprintf("table_%0.2d", tableCounter)

			master, slaves, helper := CreateMySQLReplicationHelpers(oc.KubeREST().Pods(oc.Namespace()), masterDeployment, slaveDeployment, fmt.Sprintf("%s-1", helperName), slaveCount)
			o.Expect(exutil.WaitUntilAllHelpersAreUp(oc, []exutil.Database{master, helper})).NotTo(o.HaveOccurred())
			o.Expect(exutil.WaitUntilAllHelpersAreUp(oc, slaves)).NotTo(o.HaveOccurred())

			// Test if we can query as root
			oc.KubeFramework().WaitForAnEndpoint("mysql-master")
			err := helper.TestRemoteLogin(oc, "mysql-master")
			o.Expect(err).NotTo(o.HaveOccurred())

			// Create a new table with random name
			_, err = master.Query(oc, fmt.Sprintf("CREATE TABLE %s (col1 VARCHAR(20), col2 VARCHAR(20));", table))
			o.Expect(err).NotTo(o.HaveOccurred())

			// Write new data to the table through master
			_, err = master.Query(oc, fmt.Sprintf("INSERT INTO %s (col1, col2) VALUES ('val1', 'val2');", table))
			o.Expect(err).NotTo(o.HaveOccurred())

			// Make sure data is present on master
			err = exutil.WaitForQueryOutput(oc, master, 10*time.Second, false, fmt.Sprintf("SELECT * FROM %s\\G;", table), "col1: val1\ncol2: val2")
			o.Expect(err).NotTo(o.HaveOccurred())

			// Make sure data was replicated to all slaves
			for _, slave := range slaves {
				err = exutil.WaitForQueryOutput(oc, slave, 90*time.Second, false, fmt.Sprintf("SELECT * FROM %s\\G;", table), "col1: val1\ncol2: val2")
				o.Expect(err).NotTo(o.HaveOccurred())
			}

			return master, slaves, helper
		}

		g.By("after initial deployment")
		master, _, _ := assertReplicationIsWorking("mysql-master-1", "mysql-slave-1", 1)

		g.By("after master is restarted by changing the Deployment Config")
		err = oc.Run("env").Args("dc", "mysql-master", "MYSQL_ROOT_PASSWORD=newpass").Execute()
		o.Expect(err).NotTo(o.HaveOccurred())
		err = exutil.WaitUntilPodIsGone(oc.KubeREST().Pods(oc.Namespace()), master.PodName(), 1*time.Minute)
		master, _, _ = assertReplicationIsWorking("mysql-master-2", "mysql-slave-1", 1)

		g.By("after master is restarted by deleting the pod")
		err = oc.Run("delete").Args("pod", "-l", "deployment=mysql-master-2").Execute()
		o.Expect(err).NotTo(o.HaveOccurred())
		err = exutil.WaitUntilPodIsGone(oc.KubeREST().Pods(oc.Namespace()), master.PodName(), 1*time.Minute)
		o.Expect(err).NotTo(o.HaveOccurred())
		_, slaves, _ := assertReplicationIsWorking("mysql-master-2", "mysql-slave-1", 1)

		g.By("after slave is restarted by deleting the pod")
		err = oc.Run("delete").Args("pod", "-l", "deployment=mysql-slave-1").Execute()
		o.Expect(err).NotTo(o.HaveOccurred())
		err = exutil.WaitUntilPodIsGone(oc.KubeREST().Pods(oc.Namespace()), slaves[0].PodName(), 1*time.Minute)
		o.Expect(err).NotTo(o.HaveOccurred())
		assertReplicationIsWorking("mysql-master-2", "mysql-slave-1", 1)

		pods, err := oc.KubeREST().Pods(oc.Namespace()).List(kapi.ListOptions{LabelSelector: exutil.ParseLabelsOrDie("deployment=mysql-slave-1")})
		o.Expect(err).NotTo(o.HaveOccurred())
		o.Expect(len(pods.Items)).To(o.Equal(1))

		g.By("after slave is scaled to 0 and then back to 4 replicas")
		err = oc.Run("scale").Args("dc", "mysql-slave", "--replicas=0").Execute()
		o.Expect(err).NotTo(o.HaveOccurred())
		err = exutil.WaitUntilPodIsGone(oc.KubeREST().Pods(oc.Namespace()), pods.Items[0].Name, 1*time.Minute)
		o.Expect(err).NotTo(o.HaveOccurred())
		err = oc.Run("scale").Args("dc", "mysql-slave", "--replicas=4").Execute()
		o.Expect(err).NotTo(o.HaveOccurred())
		assertReplicationIsWorking("mysql-master-2", "mysql-slave-1", 4)
	}
}

// BuildAndPushImageOfSizeWithBuilder tries to build an image of wanted size and number of layers. Built image
// is stored as an image stream tag <name>:<tag>. If shouldSucceed is false, a build is expected to fail with
// a denied error. Note the size is only approximate. Resulting image size will be different depending on used
// compression algorithm and metadata overhead.
func BuildAndPushImageOfSizeWithBuilder(
	oc *exutil.CLI,
	dClient *dockerclient.Client,
	namespace, name, tag string,
	size uint64,
	numberOfLayers int,
	shouldSucceed bool,
) error {
	istName := name
	if tag != "" {
		istName += ":" + tag
	}

	bc, err := oc.REST().BuildConfigs(namespace).Get(name)
	if err == nil {
		if bc.Spec.CommonSpec.Output.To.Kind != "ImageStreamTag" {
			return fmt.Errorf("Unexpected kind of buildspec's output (%s != %s)", bc.Spec.CommonSpec.Output.To.Kind, "ImageStreamTag")
		}
		bc.Spec.CommonSpec.Output.To.Name = istName
		if _, err = oc.REST().BuildConfigs(namespace).Update(bc); err != nil {
			return err
		}
	} else {
		err = oc.Run("new-build").Args("--binary", "--name", name, "--to", istName).Execute()
		if err != nil {
			return err
		}
	}

	tempDir, err := ioutil.TempDir("", "name-build")
	if err != nil {
		return err
	}

	dataSize := calculateRoughDataSize(oc.Stdout(), size, numberOfLayers)

	lines := make([]string, numberOfLayers+1)
	lines[0] = "FROM scratch"
	for i := 1; i <= numberOfLayers; i++ {
		blobName := fmt.Sprintf("data%d", i)
		if err := createRandomBlob(path.Join(tempDir, blobName), dataSize); err != nil {
			return err
		}
		lines[i] = fmt.Sprintf("COPY %s /%s", blobName, blobName)
	}
	if err := ioutil.WriteFile(path.Join(tempDir, "Dockerfile"), []byte(strings.Join(lines, "\n")+"\n"), 0644); err != nil {
		return err
	}

	out, err := oc.Run("start-build").Args(name, "--from-dir", tempDir, "--wait").Output()
	fmt.Fprintf(g.GinkgoWriter, "\nstart-build output:\n%s\n", out)

	buildLog, logsErr := oc.Run("logs").Args("bc/" + name).Output()
	if match := reSuccessfulBuild.FindStringSubmatch(buildLog); len(match) > 1 {
		defer dClient.RemoveImageExtended(match[1], dockerclient.RemoveImageOptions{Force: true})
	}

	if shouldSucceed && err != nil {
		return fmt.Errorf("Got unexpected build error: %v", err)
	}

	if !shouldSucceed {
		if err == nil {
			return fmt.Errorf("Build unexpectedly succeeded")
		}
		if logsErr != nil {
			return fmt.Errorf("Failed to show log of build config %s: %v", name, err)
		}
		if !reExpectedDeniedError.MatchString(buildLog) {
			return fmt.Errorf("Failed to match expected %q in: %q", reExpectedDeniedError.String(), buildLog)
		}
	}

	return nil
}

func PostgreSQLReplicationTestFactory(oc *exutil.CLI, image string) func() {
	return func() {
		oc.SetOutputDir(exutil.TestContext.OutputDir)
		defer cleanup(oc)

		_, err := exutil.SetupHostPathVolumes(oc.AdminKubeREST().PersistentVolumes(), oc.Namespace(), "512Mi", 1)
		o.Expect(err).NotTo(o.HaveOccurred())

		err = testutil.WaitForPolicyUpdate(oc.REST(), oc.Namespace(), "create", templateapi.Resource("templates"), true)
		o.Expect(err).NotTo(o.HaveOccurred())

		exutil.CheckOpenShiftNamespaceImageStreams(oc)
		err = oc.Run("new-app").Args("-f", postgreSQLReplicationTemplate, "-p", fmt.Sprintf("POSTGRESQL_IMAGE=%s", image)).Execute()
		o.Expect(err).NotTo(o.HaveOccurred())

		err = oc.Run("new-app").Args("-f", postgreSQLEphemeralTemplate, "-p", fmt.Sprintf("DATABASE_SERVICE_NAME=%s", postgreSQLHelperName)).Execute()
		o.Expect(err).NotTo(o.HaveOccurred())

		// oc.KubeFramework().WaitForAnEndpoint currently will wait forever;  for now, prefacing with our WaitForADeploymentToComplete,
		// which does have a timeout, since in most cases a failure in the service coming up stems from a failed deployment
		err = exutil.WaitForADeploymentToComplete(oc.KubeREST().ReplicationControllers(oc.Namespace()), postgreSQLHelperName, oc)
		o.Expect(err).NotTo(o.HaveOccurred())

		err = oc.KubeFramework().WaitForAnEndpoint(postgreSQLHelperName)
		o.Expect(err).NotTo(o.HaveOccurred())

		tableCounter := 0
		assertReplicationIsWorking := func(masterDeployment, slaveDeployment string, slaveCount int) (exutil.Database, []exutil.Database, exutil.Database) {
			tableCounter++
			table := fmt.Sprintf("table_%0.2d", tableCounter)

			master, slaves, helper := CreatePostgreSQLReplicationHelpers(oc.KubeREST().Pods(oc.Namespace()), masterDeployment, slaveDeployment, fmt.Sprintf("%s-1", postgreSQLHelperName), slaveCount)
			err := exutil.WaitUntilAllHelpersAreUp(oc, []exutil.Database{master, helper})
			if err != nil {
				exutil.DumpDeploymentLogs("postgresql-helper", oc)
			}
			o.Expect(err).NotTo(o.HaveOccurred())
			err = exutil.WaitUntilAllHelpersAreUp(oc, slaves)
			if err != nil {
				exutil.DumpDeploymentLogs("postgresql-slave", oc)
			}
			o.Expect(err).NotTo(o.HaveOccurred())

			// Test if we can query as admin
			oc.KubeFramework().WaitForAnEndpoint("postgresql-master")
			err = helper.TestRemoteLogin(oc, "postgresql-master")
			o.Expect(err).NotTo(o.HaveOccurred())

			// Create a new table with random name
			_, err = master.Query(oc, fmt.Sprintf("CREATE TABLE %s (col1 VARCHAR(20), col2 VARCHAR(20));", table))
			o.Expect(err).NotTo(o.HaveOccurred())

			// Write new data to the table through master
			_, err = master.Query(oc, fmt.Sprintf("INSERT INTO %s (col1, col2) VALUES ('val1', 'val2');", table))
			o.Expect(err).NotTo(o.HaveOccurred())

			// Make sure data is present on master
			err = exutil.WaitForQueryOutputContains(oc, master, 10*time.Second, false,
				fmt.Sprintf("SELECT * FROM %s;", table),
				"col1 | val1\ncol2 | val2")
			o.Expect(err).NotTo(o.HaveOccurred())

			// Make sure data was replicated to all slaves
			for _, slave := range slaves {
				err = exutil.WaitForQueryOutputContains(oc, slave, 90*time.Second, false,
					fmt.Sprintf("SELECT * FROM %s;", table),
					"col1 | val1\ncol2 | val2")
				o.Expect(err).NotTo(o.HaveOccurred())
			}

			return master, slaves, helper
		}

		g.By("after initial deployment")
		master, _, _ := assertReplicationIsWorking("postgresql-master-1", "postgresql-slave-1", 1)

		g.By("after master is restarted by changing the Deployment Config")
		err = oc.Run("env").Args("dc", "postgresql-master", "POSTGRESQL_ADMIN_PASSWORD=newpass").Execute()
		o.Expect(err).NotTo(o.HaveOccurred())
		err = exutil.WaitUntilPodIsGone(oc.KubeREST().Pods(oc.Namespace()), master.PodName(), 1*time.Minute)
		master, _, _ = assertReplicationIsWorking("postgresql-master-2", "postgresql-slave-1", 1)

		g.By("after master is restarted by deleting the pod")
		err = oc.Run("delete").Args("pod", "-l", "deployment=postgresql-master-2").Execute()
		o.Expect(err).NotTo(o.HaveOccurred())
		err = exutil.WaitUntilPodIsGone(oc.KubeREST().Pods(oc.Namespace()), master.PodName(), 1*time.Minute)
		o.Expect(err).NotTo(o.HaveOccurred())
		_, slaves, _ := assertReplicationIsWorking("postgresql-master-2", "postgresql-slave-1", 1)

		g.By("after slave is restarted by deleting the pod")
		err = oc.Run("delete").Args("pod", "-l", "deployment=postgresql-slave-1").Execute()
		o.Expect(err).NotTo(o.HaveOccurred())
		err = exutil.WaitUntilPodIsGone(oc.KubeREST().Pods(oc.Namespace()), slaves[0].PodName(), 1*time.Minute)
		o.Expect(err).NotTo(o.HaveOccurred())
		assertReplicationIsWorking("postgresql-master-2", "postgresql-slave-1", 1)

		pods, err := oc.KubeREST().Pods(oc.Namespace()).List(kapi.ListOptions{LabelSelector: exutil.ParseLabelsOrDie("deployment=postgresql-slave-1")})
		o.Expect(err).NotTo(o.HaveOccurred())
		o.Expect(len(pods.Items)).To(o.Equal(1))

//.........这里部分代码省略.........