e2e: add helper functions to use deployment kind objects

Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>

e2e/deployment.go

@@ -0,0 +1,126 @@
+/*
+Copyright 2021 The Ceph-CSI Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package e2e
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	appsv1 "k8s.io/api/apps/v1"
+	apierrs "k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/client-go/kubernetes"
+	deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
+	"k8s.io/kubernetes/test/e2e/framework"
+	e2elog "k8s.io/kubernetes/test/e2e/framework/log"
+)
+
+// execCommandInPodWithName run command in pod using podName.
+func execCommandInPodWithName(
+	f *framework.Framework,
+	cmdString,
+	podName,
+	containerName,
+	nameSpace string) (string, string, error) {
+	cmd := []string{"/bin/sh", "-c", cmdString}
+	podOpt := framework.ExecOptions{
+		Command:            cmd,
+		PodName:            podName,
+		Namespace:          nameSpace,
+		ContainerName:      containerName,
+		Stdin:              nil,
+		CaptureStdout:      true,
+		CaptureStderr:      true,
+		PreserveWhitespace: true,
+	}
+
+	return f.ExecWithOptions(podOpt)
+}
+
+// loadAppDeployment loads the deployment app config and return deployment
+// object.
+func loadAppDeployment(path string) (*appsv1.Deployment, error) {
+	deploy := appsv1.Deployment{}
+	if err := unmarshal(path, &deploy); err != nil {
+		return nil, err
+	}
+
+	return &deploy, nil
+}
+
+// createDeploymentApp creates the deployment object and waits for it to be in
+// Available state.
+func createDeploymentApp(clientSet kubernetes.Interface, app *appsv1.Deployment, deployTimeout int) error {
+	_, err := clientSet.AppsV1().Deployments(app.Namespace).Create(context.TODO(), app, metav1.CreateOptions{})
+	if err != nil {
+		return fmt.Errorf("failed to create deploy: %w", err)
+	}
+
+	return waitForDeploymentInAvailableState(clientSet, app.Name, app.Namespace, deployTimeout)
+}
+
+// deleteDeploymentApp deletes the deployment object.
+func deleteDeploymentApp(clientSet kubernetes.Interface, name, ns string, deployTimeout int) error {
+	timeout := time.Duration(deployTimeout) * time.Minute
+	err := clientSet.AppsV1().Deployments(ns).Delete(context.TODO(), name, metav1.DeleteOptions{})
+	if err != nil {
+		return fmt.Errorf("failed to delete deployment: %w", err)
+	}
+	start := time.Now()
+	e2elog.Logf("Waiting for deployment %q to be deleted", name)
+
+	return wait.PollImmediate(poll, timeout, func() (bool, error) {
+		_, err := clientSet.AppsV1().Deployments(ns).Get(context.TODO(), name, metav1.GetOptions{})
+		if err != nil {
+			if isRetryableAPIError(err) {
+				return false, nil
+			}
+			if apierrs.IsNotFound(err) {
+				return true, nil
+			}
+			e2elog.Logf("%q deployment to be deleted (%d seconds elapsed)", name, int(time.Since(start).Seconds()))
+
+			return false, fmt.Errorf("failed to get deployment: %w", err)
+		}
+
+		return false, nil
+	})
+}
+
+// waitForDeploymentInAvailableState wait for deployment to be in Available state.
+func waitForDeploymentInAvailableState(clientSet kubernetes.Interface, name, ns string, deployTimeout int) error {
+	timeout := time.Duration(deployTimeout) * time.Minute
+	start := time.Now()
+	e2elog.Logf("Waiting up to %q to be in Available state", name)
+
+	return wait.PollImmediate(poll, timeout, func() (bool, error) {
+		d, err := clientSet.AppsV1().Deployments(ns).Get(context.TODO(), name, metav1.GetOptions{})
+		if err != nil {
+			if isRetryableAPIError(err) {
+				return false, nil
+			}
+			e2elog.Logf("%q deployment to be Available (%d seconds elapsed)", name, int(time.Since(start).Seconds()))
+
+			return false, err
+		}
+		cond := deploymentutil.GetDeploymentCondition(d.Status, appsv1.DeploymentAvailable)
+
+		return cond != nil, nil
+	})
+}