Golang CLI.Run方法代碼示例

func createFixture(oc *exutil.CLI, path string) ([]string, []string, error) {
	output, err := oc.Run("create").Args("-f", path, "-o", "name").Output()
	if err != nil {
		return nil, nil, err
	}

	lines := strings.Split(output, "\n")

	resources := make([]string, 0, len(lines)-1)
	names := make([]string, 0, len(lines)-1)

	for _, line := range lines {
		if line == "" {
			continue
		}
		parts := strings.Split(line, "/")
		if len(parts) != 2 {
			return nil, nil, fmt.Errorf("expected type/name syntax, got: %q", line)
		}
		resources = append(resources, parts[0])
		names = append(names, parts[1])
	}

	return resources, names, nil
}

// 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.Client().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.AdminClient(), oc.AdminKubeClient(), &waitForVersion, oc)
}

func executeShellCommand(oc *util.CLI, podName string, command string) (string, error) {
	out, err := oc.Run("exec").Args(podName, "--", "bash", "-c", command).Output()
	if err != nil {
		switch err.(type) {
		case *util.ExitError, *exec.ExitError:
			return "", nil
		default:
			return "", err
		}
	}

	return out, nil
}

// QueryPrivileged executes an SQL query as a root user and returns the result.
func (m MySQL) QueryPrivileged(oc *util.CLI, query string) (string, error) {
	container, err := firstContainerName(oc.KubeREST().Pods(oc.Namespace()), m.podName)
	if err != nil {
		return "", err
	}
	masterConf, err := getPodConfig(oc.KubeREST().Pods(oc.Namespace()), m.masterPodName)
	if err != nil {
		return "", err
	}
	return oc.Run("exec").Args(m.podName, "-c", container, "--", "bash", "-c",
		fmt.Sprintf("mysql -h 127.0.0.1 -uroot -e \"%s\" %s",
			query, masterConf.Env["MYSQL_DATABASE"])).Output()
}

func getAdminPassword(oc *exutil.CLI) string {
	envs, err := oc.Run("set").Args("env", "dc/jenkins", "--list").Output()
	o.Expect(err).NotTo(o.HaveOccurred())
	kvs := strings.Split(envs, "\n")
	for _, kv := range kvs {
		if strings.HasPrefix(kv, "JENKINS_PASSWORD=") {
			s := strings.Split(kv, "=")
			fmt.Fprintf(g.GinkgoWriter, "\nJenkins admin password %s\n", s[1])
			return s[1]
		}
	}
	return "password"
}

// QueryPrivileged executes an SQL query as a root user and returns the result.
func (m PostgreSQL) QueryPrivileged(oc *util.CLI, query string) (string, error) {
	container, err := firstContainerName(oc.KubeClient().Core().Pods(oc.Namespace()), m.podName)
	if err != nil {
		return "", err
	}
	masterConf, err := getPodConfig(oc.KubeClient().Core().Pods(oc.Namespace()), m.masterPodName)
	if err != nil {
		return "", err
	}
	return oc.Run("exec").Args(m.podName, "-c", container, "--", "bash", "-c",
		fmt.Sprintf("psql postgres://postgres:%[email protected]/%s -x -c \"%s\"",
			masterConf.Env["POSTGRESQL_ADMIN_PASSWORD"],
			masterConf.Env["POSTGRESQL_DATABASE"], query)).Output()
}

// TestRemoteLogin will test whether we can login through to a remote database.
func (m MySQL) TestRemoteLogin(oc *util.CLI, hostAddress string) error {
	container, err := firstContainerName(oc.KubeREST().Pods(oc.Namespace()), m.podName)
	if err != nil {
		return err
	}
	masterConf, err := getPodConfig(oc.KubeREST().Pods(oc.Namespace()), m.masterPodName)
	if err != nil {
		return err
	}
	err = oc.Run("exec").Args(m.podName, "-c", container, "--", "bash", "-c",
		fmt.Sprintf("mysql -h %s -u%s -p%s -e \"SELECT 1;\" %s",
			hostAddress, masterConf.Env["MYSQL_USER"], masterConf.Env["MYSQL_PASSWORD"],
			masterConf.Env["MYSQL_DATABASE"])).Execute()
	return err
}

// TestRemoteLogin will test whether we can login through to a remote database.
func (m PostgreSQL) TestRemoteLogin(oc *util.CLI, hostAddress string) error {
	container, err := firstContainerName(oc.KubeClient().Core().Pods(oc.Namespace()), m.podName)
	if err != nil {
		return err
	}
	masterConf, err := getPodConfig(oc.KubeClient().Core().Pods(oc.Namespace()), m.masterPodName)
	if err != nil {
		return err
	}
	err = oc.Run("exec").Args(m.podName, "-c", container, "--", "bash", "-c",
		fmt.Sprintf("psql postgres://%s:%[email protected]%s/%s -x -c \"SELECT 1;\"",
			masterConf.Env["POSTGRESQL_USER"], masterConf.Env["POSTGRESQL_PASSWORD"],
			hostAddress, masterConf.Env["POSTGRESQL_DATABASE"])).Execute()
	return err
}

// ModifySourceCode will modify source code in the pod of the application
// according to the sed script.
func ModifySourceCode(oc *exutil.CLI, selector labels.Selector, sedScript, file string) error {
	pods, err := exutil.WaitForPods(oc.KubeREST().Pods(oc.Namespace()), selector, exutil.CheckPodIsRunningFunc, 1, 120*time.Second)
	if err != nil {
		return err
	}
	if len(pods) != 1 {
		return fmt.Errorf("Got %d pods for selector %v, expected 1", len(pods), selector)
	}

	pod, err := oc.KubeREST().Pods(oc.Namespace()).Get(pods[0])
	if err != nil {
		return err
	}
	return oc.Run("exec").Args(pod.Name, "-c", pod.Spec.Containers[0].Name, "--", "sed", "-ie", sedScript, file).Execute()
}

// RunInPodContainer will run provided command in the specified pod container.
func RunInPodContainer(oc *exutil.CLI, selector labels.Selector, cmd []string) error {
	pods, err := exutil.WaitForPods(oc.KubeREST().Pods(oc.Namespace()), selector, exutil.CheckPodIsRunningFn, 1, 2*time.Minute)
	if err != nil {
		return err
	}
	if len(pods) != 1 {
		return fmt.Errorf("Got %d pods for selector %v, expected 1", len(pods), selector)
	}

	pod, err := oc.KubeREST().Pods(oc.Namespace()).Get(pods[0])
	if err != nil {
		return err
	}
	args := []string{pod.Name, "-c", pod.Spec.Containers[0].Name, "--"}
	args = append(args, cmd...)
	return oc.Run("exec").Args(args...).Execute()
}

// IsReady pings the PostgreSQL server.
func (m PostgreSQL) IsReady(oc *util.CLI) (bool, error) {
	conf, err := getPodConfig(oc.KubeClient().Core().Pods(oc.Namespace()), m.podName)
	if err != nil {
		return false, err
	}
	out, err := oc.Run("exec").Args(m.podName, "-c", conf.Container, "--", "bash", "-c",
		"psql postgresql://[email protected] -x -c \"SELECT 1;\"").Output()
	if err != nil {
		switch err.(type) {
		case *util.ExitError, *exec.ExitError:
			return false, nil
		default:
			return false, err
		}
	}
	return strings.Contains(out, "-[ RECORD 1 ]\n?column? | 1"), nil
}

// IsReady pings the MySQL server.
func (m MySQL) IsReady(oc *util.CLI) (bool, error) {
	conf, err := getPodConfig(oc.KubeREST().Pods(oc.Namespace()), m.podName)
	if err != nil {
		return false, err
	}
	out, err := oc.Run("exec").Args(m.podName, "-c", conf.Container, "--", "bash", "-c",
		"mysqladmin -h 127.0.0.1 -uroot ping").Output()
	if err != nil {
		switch err.(type) {
		case *util.ExitError, *exec.ExitError:
			return false, nil
		default:
			return false, err
		}
	}
	return strings.Contains(out, "mysqld is alive"), nil
}

func lookupFSGroup(oc *exutil.CLI, project string) (int, error) {
	gidRange, err := oc.Run("get").Args("project", project,
		"--template='{{ index .metadata.annotations \"openshift.io/sa.scc.supplemental-groups\" }}'").Output()
	if err != nil {
		return 0, err
	}

	// gidRange will be something like: 1000030000/10000
	fsGroupStr := strings.Split(gidRange, "/")[0]
	fsGroupStr = strings.Replace(fsGroupStr, "'", "", -1)

	fsGroup, err := strconv.Atoi(fsGroupStr)
	if err != nil {
		return 0, err
	}

	return fsGroup, nil
}

// NewRef creates a jenkins reference from an OC client
func NewRef(oc *exutil.CLI) *JenkinsRef {
	g.By("get ip and port for jenkins service")
	serviceIP, err := oc.Run("get").Args("svc", "jenkins", "--config", exutil.KubeConfigPath()).Template("{{.spec.clusterIP}}").Output()
	o.Expect(err).NotTo(o.HaveOccurred())
	port, err := oc.Run("get").Args("svc", "jenkins", "--config", exutil.KubeConfigPath()).Template("{{ $x := index .spec.ports 0}}{{$x.port}}").Output()
	o.Expect(err).NotTo(o.HaveOccurred())

	g.By("get admin password")
	password := GetAdminPassword(oc)
	o.Expect(password).ShouldNot(o.BeEmpty())

	j := &JenkinsRef{
		oc:        oc,
		host:      serviceIP,
		port:      port,
		namespace: oc.Namespace(),
		password:  password,
	}
	return j
}

func checkSingleIdle(oc *exutil.CLI, idlingFile string, resources map[string][]string, resourceName string, kind string) {
	g.By("Idling the service")
	_, err := oc.Run("idle").Args("--resource-names-file", idlingFile).Output()
	o.Expect(err).ToNot(o.HaveOccurred())

	g.By("Ensuring the scale is zero (and stays zero)")
	objName := resources[resourceName][0]
	// make sure we don't get woken up by an incorrect router health check or anything like that
	o.Consistently(func() (string, error) {
		return oc.Run("get").Args(resourceName+"/"+objName, "--output=jsonpath=\"{.spec.replicas}\"").Output()
	}, 20*time.Second, 500*time.Millisecond).Should(o.ContainSubstring("0"))

	g.By("Fetching the service and checking the annotations are present")
	serviceName := resources["service"][0]
	endpoints, err := oc.KubeREST().Endpoints(oc.Namespace()).Get(serviceName)
	o.Expect(err).NotTo(o.HaveOccurred())

	o.Expect(endpoints.Annotations).To(o.HaveKey(unidlingapi.IdledAtAnnotation))
	o.Expect(endpoints.Annotations).To(o.HaveKey(unidlingapi.UnidleTargetAnnotation))

	g.By("Checking the idled-at time")
	idledAtAnnotation := endpoints.Annotations[unidlingapi.IdledAtAnnotation]
	idledAtTime, err := time.Parse(time.RFC3339, idledAtAnnotation)
	o.Expect(err).ToNot(o.HaveOccurred())
	o.Expect(idledAtTime).To(o.BeTemporally("~", time.Now(), 5*time.Minute))

	g.By("Checking the idle targets")
	unidleTargetAnnotation := endpoints.Annotations[unidlingapi.UnidleTargetAnnotation]
	unidleTargets := []unidlingapi.RecordedScaleReference{}
	err = json.Unmarshal([]byte(unidleTargetAnnotation), &unidleTargets)
	o.Expect(err).ToNot(o.HaveOccurred())
	o.Expect(unidleTargets).To(o.Equal([]unidlingapi.RecordedScaleReference{
		{
			Replicas: 2,
			CrossGroupObjectReference: unidlingapi.CrossGroupObjectReference{
				Name: resources[resourceName][0],
				Kind: kind,
			},
		},
	}))
}