Merge pull request #58 from linkernetworks/alex/addk8sfunction

VX-149 VX-150 Add k8s pod, service, pvc: get list create delete function

Former-commit-id: 2e93f942b209e675723145e557b7ffb0bc8994d4 [formerly e206b23]
Former-commit-id: 77129bca7098229b4145cc2be5b9b3fdddea2d8d

src/kubernetes/nodes.go

@@ -5,7 +5,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
-//Get the Node object by the node name
+//Get the node object by the node name
 func (kc *KubeCtl) GetNode(name string) (*corev1.Node, error) {
 	return kc.Clientset.CoreV1().Nodes().Get(name, metav1.GetOptions{})
 }

src/kubernetes/nodes_test.go

@@ -44,15 +44,15 @@ func (suite *KubeCtlNodeTestSuite) TestGetNodeFail() {
 func (suite *KubeCtlNodeTestSuite) TestGetNodes() {
 	node := corev1.Node{
 		ObjectMeta: metav1.ObjectMeta{
-			Name: "K8S-Node2",
+			Name: "K8S-Node-2",
 		},
 	}
 	_, err := suite.fakeclient.CoreV1().Nodes().Create(&node)
 	suite.NoError(err)
 
 	node = corev1.Node{
 		ObjectMeta: metav1.ObjectMeta{
-			Name: "K8S-Node3",
+			Name: "K8S-Node-3",
 		},
 	}
 	_, err = suite.fakeclient.CoreV1().Nodes().Create(&node)

src/kubernetes/pods.go

@@ -0,0 +1,35 @@
+package kubernetes
+
+import (
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+//Get the pod object by the pod name
+func (kc *KubeCtl) GetPod(name string, namespace string) (*corev1.Pod, error) {
+	return kc.Clientset.CoreV1().Pods(namespace).Get(name, metav1.GetOptions{})
+}
+
+//Get all pods from the k8s cluster
+func (kc *KubeCtl) GetPods(namespace string) ([]*corev1.Pod, error) {
+	pods := []*corev1.Pod{}
+	podsList, err := kc.Clientset.CoreV1().Pods(namespace).List(metav1.ListOptions{})
+	if err != nil {
+		return pods, err
+	}
+	for _, p := range podsList.Items {
+		pods = append(pods, &p)
+	}
+	return pods, nil
+}
+
+//Create the pod by the pod object
+func (kc *KubeCtl) CreatePod(pod *corev1.Pod, namespace string) (*corev1.Pod, error) {
+	return kc.Clientset.CoreV1().Pods(namespace).Create(pod)
+}
+
+//Delete the pod by the pod name
+func (kc *KubeCtl) DeletePod(name string, namespace string) error {
+	options := metav1.DeleteOptions{}
+	return kc.Clientset.CoreV1().Pods(namespace).Delete(name, &options)
+}

src/kubernetes/pods_test.go

@@ -0,0 +1,86 @@
+package kubernetes
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/suite"
+
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	fakeclientset "k8s.io/client-go/kubernetes/fake"
+)
+
+type KubeCtlPodTestSuite struct {
+	suite.Suite
+	kubectl    *KubeCtl
+	fakeclient *fakeclientset.Clientset
+}
+
+func (suite *KubeCtlPodTestSuite) SetupSuite() {
+	suite.fakeclient = fakeclientset.NewSimpleClientset()
+	namespace := "default"
+	suite.kubectl = New(suite.fakeclient, namespace)
+}
+
+func (suite *KubeCtlPodTestSuite) TestGetPod() {
+	namespace := "default"
+	pod := corev1.Pod{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "K8S-Pod-1",
+		},
+	}
+	_, err := suite.fakeclient.CoreV1().Pods(namespace).Create(&pod)
+	suite.NoError(err)
+
+	result, err := suite.kubectl.GetPod("K8S-Pod-1", namespace)
+	suite.NoError(err)
+	suite.Equal(pod.GetName(), result.GetName())
+}
+
+func (suite *KubeCtlPodTestSuite) TestGetPodFail() {
+	namespace := "Unknown_Namespace"
+	_, err := suite.kubectl.GetPod("Unknown_Name", namespace)
+	suite.Error(err)
+}
+
+func (suite *KubeCtlPodTestSuite) TestGetPods() {
+	namespace := "default"
+	pod := corev1.Pod{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "K8S-Pod-2",
+		},
+	}
+	_, err := suite.fakeclient.CoreV1().Pods(namespace).Create(&pod)
+	suite.NoError(err)
+
+	pod = corev1.Pod{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "K8S-Pod-3",
+		},
+	}
+	_, err = suite.fakeclient.CoreV1().Pods(namespace).Create(&pod)
+	suite.NoError(err)
+
+	pods, err := suite.kubectl.GetPods(namespace)
+	suite.NoError(err)
+	suite.NotEqual(0, len(pods))
+}
+
+func (suite *KubeCtlPodTestSuite) TestCreateDeletePod() {
+	namespace := "default"
+	pod := corev1.Pod{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "K8S-Pod-4",
+		},
+	}
+	_, err := suite.kubectl.CreatePod(&pod, namespace)
+	suite.NoError(err)
+	err = suite.kubectl.DeletePod("K8S-Pod-4", namespace)
+	suite.NoError(err)
+}
+
+func (suite *KubeCtlPodTestSuite) TearDownSuite() {}
+
+func TestKubePodTestSuite(t *testing.T) {
+	suite.Run(t, new(KubeCtlPodTestSuite))
+}

src/kubernetes/pvc.go

@@ -0,0 +1,35 @@
+package kubernetes
+
+import (
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+//Get the PVC object by the PVC name
+func (kc *KubeCtl) GetPVC(name string, namespace string) (*corev1.PersistentVolumeClaim, error) {
+	return kc.Clientset.CoreV1().PersistentVolumeClaims(namespace).Get(name, metav1.GetOptions{})
+}
+
+//Get all PVCs from the k8s cluster
+func (kc *KubeCtl) GetPVCs(namespace string) ([]*corev1.PersistentVolumeClaim, error) {
+	pvcs := []*corev1.PersistentVolumeClaim{}
+	pvcsList, err := kc.Clientset.CoreV1().PersistentVolumeClaims(namespace).List(metav1.ListOptions{})
+	if err != nil {
+		return pvcs, err
+	}
+	for _, p := range pvcsList.Items {
+		pvcs = append(pvcs, &p)
+	}
+	return pvcs, nil
+}
+
+//Create the PVC by the PVC object
+func (kc *KubeCtl) CreatePVC(pvc *corev1.PersistentVolumeClaim, namespace string) (*corev1.PersistentVolumeClaim, error) {
+	return kc.Clientset.CoreV1().PersistentVolumeClaims(namespace).Create(pvc)
+}
+
+//Delete the PVC by the PVC name
+func (kc *KubeCtl) DeletePVC(name string, namespace string) error {
+	options := metav1.DeleteOptions{}
+	return kc.Clientset.CoreV1().PersistentVolumeClaims(namespace).Delete(name, &options)
+}

src/kubernetes/pvc_test.go

@@ -0,0 +1,86 @@
+package kubernetes
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/suite"
+
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	fakeclientset "k8s.io/client-go/kubernetes/fake"
+)
+
+type KubeCtlPVCTestSuite struct {
+	suite.Suite
+	kubectl    *KubeCtl
+	fakeclient *fakeclientset.Clientset
+}
+
+func (suite *KubeCtlPVCTestSuite) SetupSuite() {
+	suite.fakeclient = fakeclientset.NewSimpleClientset()
+	namespace := "default"
+	suite.kubectl = New(suite.fakeclient, namespace)
+}
+
+func (suite *KubeCtlPVCTestSuite) TestGetPVC() {
+	namespace := "default"
+	pvc := corev1.PersistentVolumeClaim{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "K8S-PVC-1",
+		},
+	}
+	_, err := suite.fakeclient.CoreV1().PersistentVolumeClaims(namespace).Create(&pvc)
+	suite.NoError(err)
+
+	result, err := suite.kubectl.GetPVC("K8S-PVC-1", namespace)
+	suite.NoError(err)
+	suite.Equal(pvc.GetName(), result.GetName())
+}
+
+func (suite *KubeCtlPVCTestSuite) TestGetPVCFail() {
+	namespace := "Unknown_Namespace"
+	_, err := suite.kubectl.GetPVC("Unknown_Name", namespace)
+	suite.Error(err)
+}
+
+func (suite *KubeCtlPVCTestSuite) TestGetPVCs() {
+	namespace := "default"
+	pvc := corev1.PersistentVolumeClaim{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "K8S-PVC-2",
+		},
+	}
+	_, err := suite.fakeclient.CoreV1().PersistentVolumeClaims(namespace).Create(&pvc)
+	suite.NoError(err)
+
+	pvc = corev1.PersistentVolumeClaim{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "K8S-PVC-3",
+		},
+	}
+	_, err = suite.fakeclient.CoreV1().PersistentVolumeClaims(namespace).Create(&pvc)
+	suite.NoError(err)
+
+	pvcs, err := suite.kubectl.GetPVCs(namespace)
+	suite.NoError(err)
+	suite.NotEqual(0, len(pvcs))
+}
+
+func (suite *KubeCtlPVCTestSuite) TestCreateDeletePVC() {
+	namespace := "default"
+	pvc := corev1.PersistentVolumeClaim{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "K8S-PVC-4",
+		},
+	}
+	_, err := suite.kubectl.CreatePVC(&pvc, namespace)
+	suite.NoError(err)
+	err = suite.kubectl.DeletePVC("K8S-PVC-4", namespace)
+	suite.NoError(err)
+}
+
+func (suite *KubeCtlPVCTestSuite) TearDownSuite() {}
+
+func TestKubePVCTestSuite(t *testing.T) {
+	suite.Run(t, new(KubeCtlPVCTestSuite))
+}

src/kubernetes/services.go

@@ -0,0 +1,35 @@
+package kubernetes
+
+import (
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+//Get the service object by the service name
+func (kc *KubeCtl) GetService(name string, namespace string) (*corev1.Service, error) {
+	return kc.Clientset.CoreV1().Services(namespace).Get(name, metav1.GetOptions{})
+}
+
+//Get all services from the k8s cluster
+func (kc *KubeCtl) GetServices(namespace string) ([]*corev1.Service, error) {
+	services := []*corev1.Service{}
+	servicesList, err := kc.Clientset.CoreV1().Services(namespace).List(metav1.ListOptions{})
+	if err != nil {
+		return services, err
+	}
+	for _, s := range servicesList.Items {
+		services = append(services, &s)
+	}
+	return services, nil
+}
+
+//Create the service by the service object
+func (kc *KubeCtl) CreateService(service *corev1.Service, namespace string) (*corev1.Service, error) {
+	return kc.Clientset.CoreV1().Services(namespace).Create(service)
+}
+
+//Delete the service by the service name
+func (kc *KubeCtl) DeleteService(name string, namespace string) error {
+	options := metav1.DeleteOptions{}
+	return kc.Clientset.CoreV1().Services(namespace).Delete(name, &options)
+}

src/kubernetes/services_test.go

@@ -0,0 +1,86 @@
+package kubernetes
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/suite"
+
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	fakeclientset "k8s.io/client-go/kubernetes/fake"
+)
+
+type KubeCtlServiceTestSuite struct {
+	suite.Suite
+	kubectl    *KubeCtl
+	fakeclient *fakeclientset.Clientset
+}
+
+func (suite *KubeCtlServiceTestSuite) SetupSuite() {
+	suite.fakeclient = fakeclientset.NewSimpleClientset()
+	namespace := "default"
+	suite.kubectl = New(suite.fakeclient, namespace)
+}
+
+func (suite *KubeCtlServiceTestSuite) TestGetService() {
+	namespace := "default"
+	service := corev1.Service{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "K8S-Service-1",
+		},
+	}
+	_, err := suite.fakeclient.CoreV1().Services(namespace).Create(&service)
+	suite.NoError(err)
+
+	result, err := suite.kubectl.GetService("K8S-Service-1", namespace)
+	suite.NoError(err)
+	suite.Equal(service.GetName(), result.GetName())
+}
+
+func (suite *KubeCtlServiceTestSuite) TestGetServiceFail() {
+	namespace := "Unknown_Namespace"
+	_, err := suite.kubectl.GetService("Unknown_Name", namespace)
+	suite.Error(err)
+}
+
+func (suite *KubeCtlServiceTestSuite) TestGetServices() {
+	namespace := "default"
+	service := corev1.Service{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "K8S-Service-2",
+		},
+	}
+	_, err := suite.fakeclient.CoreV1().Services(namespace).Create(&service)
+	suite.NoError(err)
+
+	service = corev1.Service{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "K8S-Service-3",
+		},
+	}
+	_, err = suite.fakeclient.CoreV1().Services(namespace).Create(&service)
+	suite.NoError(err)
+
+	services, err := suite.kubectl.GetServices(namespace)
+	suite.NoError(err)
+	suite.NotEqual(0, len(services))
+}
+
+func (suite *KubeCtlServiceTestSuite) TestCreateDeleteService() {
+	namespace := "default"
+	service := corev1.Service{
+		ObjectMeta: metav1.ObjectMeta{
+			Name: "K8S-Service-4",
+		},
+	}
+	_, err := suite.kubectl.CreateService(&service, namespace)
+	suite.NoError(err)
+	err = suite.kubectl.DeleteService("K8S-Service-4", namespace)
+	suite.NoError(err)
+}
+
+func (suite *KubeCtlServiceTestSuite) TearDownSuite() {}
+
+func TestKubeServiceTestSuite(t *testing.T) {
+	suite.Run(t, new(KubeCtlServiceTestSuite))
+}