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Controller working
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@luizbafilho
luizbafilho committed Nov 23, 2020
1 parent c6622be commit d8b4ba4
Showing 1 changed file with 260 additions and 3 deletions.
263 changes: 260 additions & 3 deletions controllers/loadtests/locusttest_controller.go
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Original file line number Diff line number Diff line change
Expand Up @@ -20,13 +20,22 @@ import (
"context"

"github.com/go-logr/logr"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/intstr"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"

loadtestsv1beta1 "github.com/luizbafilho/lokust/apis/loadtests/v1beta1"
)

const (
ComponentMaster = "master"
ComponentWorker = "worker"
)

// LocustTestReconciler reconciles a LocustTest object
type LocustTestReconciler struct {
client.Client
Expand All @@ -38,16 +47,264 @@ type LocustTestReconciler struct {
// +kubebuilder:rbac:groups=loadtests.lokust.io,resources=locusttests/status,verbs=get;update;patch

func (r *LocustTestReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error) {
_ = context.Background()
_ = r.Log.WithValues("locusttest", req.NamespacedName)
ctx := context.Background()
log := r.Log.WithValues("locusttest", req.NamespacedName)

var test loadtestsv1beta1.LocustTest
if err := r.Get(ctx, req.NamespacedName, &test); err != nil {
return ctrl.Result{}, client.IgnoreNotFound(err)
}

applyOpts := []client.PatchOption{client.ForceOwnership, client.FieldOwner("locusttest-controller")}

masterDeploy, err := r.desiredMasterDeployment(test)
if err != nil {
return ctrl.Result{}, err
}
err = r.Patch(ctx, &masterDeploy, client.Apply, applyOpts...)
if err != nil {
return ctrl.Result{}, err
}
masterSvc, err := r.desiredMasterService(test)
if err != nil {
return ctrl.Result{}, err
}
err = r.Patch(ctx, &masterSvc, client.Apply, applyOpts...)
if err != nil {
return ctrl.Result{}, err
}

workerDeploy, err := r.desiredWorkerDeployment(test)
if err != nil {
return ctrl.Result{}, err
}
err = r.Patch(ctx, &workerDeploy, client.Apply, applyOpts...)
if err != nil {
return ctrl.Result{}, err
}

// your logic here
// err = r.Status().Update(ctx, &book)
// if err != nil {
// return ctrl.Result{}, err
// }

log.Info("reconciled locust test")
return ctrl.Result{}, nil
}

var (
ownerKey = ".metadata.controller"
apiGVStr = loadtestsv1beta1.GroupVersion.String()
)

func (r *LocustTestReconciler) SetupWithManager(mgr ctrl.Manager) error {
if err := mgr.GetFieldIndexer().IndexField(&appsv1.Deployment{}, ownerKey, func(rawObj runtime.Object) []string {
// grab the deployment object, extract the owner...
dep := rawObj.(*appsv1.Deployment)
owner := metav1.GetControllerOf(dep)
if owner == nil {
return nil
}
// ...make sure it's a SeldonDeployment...
if owner.APIVersion != apiGVStr || owner.Kind != "LocustTest" {
return nil
}

// ...and if so, return it
return []string{owner.Name}
}); err != nil {
return err
}

return ctrl.NewControllerManagedBy(mgr).
For(&loadtestsv1beta1.LocustTest{}).
Owns(&appsv1.Deployment{}).
Complete(r)
}

func (r *LocustTestReconciler) desiredMasterService(test loadtestsv1beta1.LocustTest) (corev1.Service, error) {
svc := corev1.Service{
TypeMeta: metav1.TypeMeta{APIVersion: corev1.SchemeGroupVersion.String(), Kind: "Service"},
ObjectMeta: metav1.ObjectMeta{
Name: test.Name,
Namespace: test.Namespace,
// OwnerReferences: []metav1.OwnerReference{*controller.NewProxyOwnerRef(p)},
},
Spec: corev1.ServiceSpec{
Selector: makeLabels(test, ComponentMaster),
Type: "ClusterIP",
Ports: []corev1.ServicePort{
{
Name: "loc-master-web",
Protocol: "TCP",
Port: 8089,
TargetPort: intstr.IntOrString{
IntVal: 8089,
},
},
{
Name: "loc-master-p1",
Protocol: "TCP",
Port: 5557,
TargetPort: intstr.IntOrString{
IntVal: 5557,
},
},
{
Name: "loc-master-p2",
Protocol: "TCP",
Port: 5558,
TargetPort: intstr.IntOrString{
IntVal: 5558,
},
},
},
},
}

if err := ctrl.SetControllerReference(&test, &svc, r.Scheme); err != nil {
return svc, err
}

return svc, nil
}

func (r *LocustTestReconciler) desiredMasterDeployment(test loadtestsv1beta1.LocustTest) (appsv1.Deployment, error) {
replicas := int32(1)
depl := appsv1.Deployment{
TypeMeta: metav1.TypeMeta{APIVersion: appsv1.SchemeGroupVersion.String(), Kind: "Deployment"},
ObjectMeta: metav1.ObjectMeta{
Name: test.Name + "-master",
Namespace: test.Namespace,
},
Spec: appsv1.DeploymentSpec{
Replicas: &replicas, // won't be nil because defaulting
Selector: &metav1.LabelSelector{
MatchLabels: makeLabels(test, ComponentMaster),
},
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: makeLabels(test, ComponentMaster),
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: "locust-master",
Image: "locustio/locust:1.3.2",
Env: []corev1.EnvVar{
{Name: "HOST", Value: "https://www.google.com"},
},
Args: []string{"--master", "-f", "/mnt/locust/locustfile.py"},
VolumeMounts: []corev1.VolumeMount{
{
Name: "locustfile",
ReadOnly: true,
MountPath: "/mnt/locust",
},
},
Ports: []corev1.ContainerPort{
{ContainerPort: 8089, Name: "loc-master-web", Protocol: "TCP"},
{ContainerPort: 5557, Name: "loc-master-p1", Protocol: "TCP"},
{ContainerPort: 5558, Name: "loc-master-p2", Protocol: "TCP"},
},
Resources: *test.Spec.Resources.DeepCopy(),
},
},
Volumes: []corev1.Volume{
{
Name: "locustfile",
VolumeSource: corev1.VolumeSource{
ConfigMap: &corev1.ConfigMapVolumeSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: "locustfile-configmap",
},
},
},
},
},
},
},
},
}

if err := ctrl.SetControllerReference(&test, &depl, r.Scheme); err != nil {
return depl, err
}

return depl, nil
}

func (r *LocustTestReconciler) desiredWorkerDeployment(test loadtestsv1beta1.LocustTest) (appsv1.Deployment, error) {
depl := appsv1.Deployment{
TypeMeta: metav1.TypeMeta{APIVersion: appsv1.SchemeGroupVersion.String(), Kind: "Deployment"},
ObjectMeta: metav1.ObjectMeta{
Name: test.Name + "-worker",
Namespace: test.Namespace,
},
Spec: appsv1.DeploymentSpec{
Replicas: test.Spec.Replicas, // won't be nil because defaulting
Selector: &metav1.LabelSelector{
MatchLabels: makeLabels(test, ComponentWorker),
},
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: makeLabels(test, ComponentWorker),
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: "locust-worker",
Image: "locustio/locust:1.3.2",
Env: []corev1.EnvVar{
{Name: "HOST", Value: "https://www.google.com"},
},
Args: []string{
"--worker",
"--master-host", test.Name,
"-f", "/mnt/locust/locustfile.py",
},
VolumeMounts: []corev1.VolumeMount{
{
Name: "locustfile",
ReadOnly: true,
MountPath: "/mnt/locust",
},
},
Ports: []corev1.ContainerPort{
{ContainerPort: 8089, Name: "loc-master-web", Protocol: "TCP"},
{ContainerPort: 5557, Name: "loc-master-p1", Protocol: "TCP"},
{ContainerPort: 5558, Name: "loc-master-p2", Protocol: "TCP"},
},
Resources: *test.Spec.Resources.DeepCopy(),
},
},
Volumes: []corev1.Volume{
{
Name: "locustfile",
VolumeSource: corev1.VolumeSource{
ConfigMap: &corev1.ConfigMapVolumeSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: "locustfile-configmap",
},
},
},
},
},
},
},
},
}

if err := ctrl.SetControllerReference(&test, &depl, r.Scheme); err != nil {
return depl, err
}

return depl, nil
}

func makeLabels(test loadtestsv1beta1.LocustTest, component string) map[string]string {
return map[string]string{
"locust-test": test.Name,
"locust-component": component,
}
}

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