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fixture.go
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fixture.go
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package apicontroller
import (
"fmt"
log "github.com/sirupsen/logrus"
appv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/client-go/kubernetes"
)
type Fixture struct {
sampleAppCtrl *sampleAppCtrl
SampleAppDepl *appv1.Deployment
SampleAppService *corev1.Service
}
func setUpOrExit(k8sInterface kubernetes.Interface, namespace string, testId string) *Fixture {
sampleAppCtrl := &sampleAppCtrl{
k8sInterface: k8sInterface,
namespace: namespace,
testId: testId,
}
sampleAppDepl, deplErr := sampleAppCtrl.createDeployment()
if deplErr != nil {
if errors.IsAlreadyExists(deplErr) {
log.Debug("SampleApp deployment already exists.")
if sampleAppDepl2, getDeplErr := sampleAppCtrl.getDeployment(); getDeplErr != nil {
log.Fatalf("error getting existing SampleApp deployment. Root cause: %v", getDeplErr)
} else {
sampleAppDepl = sampleAppDepl2
}
} else {
log.Fatalf("error creating SampleApp deployment. Root cause: %v", deplErr)
}
}
sampleAppService, svcErr := sampleAppCtrl.createService(&sampleAppDepl.Spec.Template)
if svcErr != nil {
if errors.IsAlreadyExists(deplErr) {
log.Debug("SampleApp service already exists.")
if sampleAppSvc2, getSvcErr := sampleAppCtrl.getService(); getSvcErr != nil {
log.Fatalf("error getting existing SampleApp service. Root cause: %v", getSvcErr)
} else {
sampleAppService = sampleAppSvc2
}
} else {
log.Fatalf("error creating SampleApp service. Root cause: %v", svcErr)
}
}
return &Fixture{
sampleAppCtrl: sampleAppCtrl,
SampleAppDepl: sampleAppDepl,
SampleAppService: sampleAppService,
}
}
func (f *Fixture) tearDown() {
if err := f.sampleAppCtrl.deleteDeployment(f.SampleAppDepl); err != nil {
if errors.IsNotFound(err) {
log.Warn("SampleApp deployment does not exist")
} else {
log.Errorf("Error while deleting SampleApp deployment. Root cause: %v", err)
}
}
if err := f.sampleAppCtrl.deleteService(f.SampleAppService); err != nil {
if errors.IsNotFound(err) {
log.Warn("SampleApp service does not exist")
} else {
log.Errorf("Error while deleting SampleApp service. Root cause: %v", err)
}
}
}
type sampleAppCtrl struct {
k8sInterface kubernetes.Interface
namespace string
testId string
}
func (c *sampleAppCtrl) createDeployment() (*appv1.Deployment, error) {
labels := labels(c.testId)
annotations := make(map[string]string)
annotations["sidecar.istio.io/inject"] = "true"
deployment := &appv1.Deployment{
ObjectMeta: metav1.ObjectMeta{
Name: c.deplName(),
Namespace: c.namespace,
Labels: labels,
},
Spec: appv1.DeploymentSpec{
Selector: &metav1.LabelSelector{
MatchLabels: labels,
},
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: labels,
Annotations: annotations,
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: fmt.Sprintf("sample-app-cont-%s", c.testId),
Image: "eu.gcr.io/kyma-project/example/http-db-service:0.0.6",
ImagePullPolicy: "IfNotPresent",
Ports: []corev1.ContainerPort{
{
Name: "http",
ContainerPort: 8017,
},
},
},
},
},
},
},
}
return c.k8sInterface.AppsV1().Deployments(c.namespace).Create(deployment)
}
func (c *sampleAppCtrl) getDeployment() (*appv1.Deployment, error) {
return c.k8sInterface.AppsV1().Deployments(c.namespace).Get(c.deplName(), metav1.GetOptions{})
}
func (c *sampleAppCtrl) deplName() string {
return fmt.Sprintf("sample-app-depl-%s", c.testId)
}
func (c *sampleAppCtrl) createService(podTmpl *corev1.PodTemplateSpec) (*corev1.Service, error) {
selectors := make(map[string]string)
selectors["app"] = podTmpl.ObjectMeta.Labels["app"]
svc := &corev1.Service{
ObjectMeta: metav1.ObjectMeta{
Name: c.svcName(),
Namespace: c.namespace,
Labels: labels(c.testId),
},
Spec: corev1.ServiceSpec{
Selector: selectors,
Type: corev1.ServiceTypeClusterIP,
Ports: []corev1.ServicePort{
{
Port: 8888,
Name: "http",
TargetPort: intstr.FromString(podTmpl.Spec.Containers[0].Ports[0].Name),
},
},
},
}
return c.k8sInterface.CoreV1().Services(c.namespace).Create(svc)
}
func (c *sampleAppCtrl) getService() (*corev1.Service, error) {
return c.k8sInterface.CoreV1().Services(c.namespace).Get(c.svcName(), metav1.GetOptions{})
}
func (c *sampleAppCtrl) svcName() string {
return fmt.Sprintf("sample-app-svc-%s", c.testId)
}
func (c *sampleAppCtrl) deleteDeployment(depl *appv1.Deployment) error {
return c.k8sInterface.AppsV1().Deployments(c.namespace).Delete(depl.Name, &metav1.DeleteOptions{})
}
func (c *sampleAppCtrl) deleteService(service *corev1.Service) error {
return c.k8sInterface.CoreV1().Services(c.namespace).Delete(service.Name, &metav1.DeleteOptions{})
}
func labels(testId string) map[string]string {
labels := make(map[string]string)
labels["createdBy"] = "api-controller-acceptance-tests"
labels["app"] = fmt.Sprintf("sample-app-%s", testId)
labels["test"] = "true"
return labels
}