seaweedfs-operator/controllers/controller_master.go

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package controllers
import (
"context"
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"time"
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appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/types"
ctrl "sigs.k8s.io/controller-runtime"
seaweedv1 "github.com/seaweedfs/seaweedfs-operator/api/v1"
)
const (
MasterClusterSize = 3
)
func (r *SeaweedReconciler) ensureMaster(seaweedCR *seaweedv1.Seaweed) (done bool, result ctrl.Result, err error) {
_ = context.Background()
_ = r.Log.WithValues("seaweed", seaweedCR.Name)
if done, result, err = r.ensureMasterService(seaweedCR); done {
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return
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}
if done, result, err = r.ensureMasterStatefulSet(seaweedCR); done {
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return
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}
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return
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}
func (r *SeaweedReconciler) ensureMasterStatefulSet(seaweedCR *seaweedv1.Seaweed) (bool, ctrl.Result, error) {
ctx := context.Background()
log := r.Log.WithValues("sw-master-statefulset", seaweedCR.Name)
masterStatefulSet := &appsv1.StatefulSet{}
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err := r.Get(ctx, types.NamespacedName{Name: seaweedCR.Name + "-master", Namespace: seaweedCR.Namespace}, masterStatefulSet)
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if err != nil && errors.IsNotFound(err) {
// Define a new deployment
dep := r.createMasterStatefulSet(seaweedCR)
log.Info("Creating a new master statefulset", "Namespace", dep.Namespace, "Name", dep.Name)
err = r.Create(ctx, dep)
if err != nil {
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log.Error(err, "Failed to create master statefulset", "Namespace", dep.Namespace, "Name", dep.Name)
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return ReconcileResult(err)
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}
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// sleep 60 seconds for DNS to have pod IP addresses ready
time.Sleep(time.Minute)
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// Deployment created successfully - return and requeue
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return ReconcileResult(err)
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} else if err != nil {
log.Error(err, "Failed to get Deployment")
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return ReconcileResult(err)
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}
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log.Info("master version " + masterStatefulSet.Spec.Template.Spec.Containers[0].Image + " expected " + seaweedCR.Spec.Image)
if masterStatefulSet.Spec.Template.Spec.Containers[0].Image != seaweedCR.Spec.Image {
masterStatefulSet.Spec.Template.Spec.Containers[0].Image = seaweedCR.Spec.Image
if err = r.Update(ctx, masterStatefulSet); err != nil {
log.Error(err, "Failed to update master statefulset", "Namespace", masterStatefulSet.Namespace, "Name", masterStatefulSet.Name)
return ReconcileResult(err)
}
// Deployment created successfully - return and requeue
return ReconcileResult(err)
}
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log.Info("Get master stateful set " + masterStatefulSet.Name)
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return ReconcileResult(err)
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}
func (r *SeaweedReconciler) ensureMasterService(seaweedCR *seaweedv1.Seaweed) (bool, ctrl.Result, error) {
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ctx := context.Background()
log := r.Log.WithValues("sw-master-service", seaweedCR.Name)
masterService := &corev1.Service{}
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err := r.Get(ctx, types.NamespacedName{Name: seaweedCR.Name + "-master", Namespace: seaweedCR.Namespace}, masterService)
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if err != nil && errors.IsNotFound(err) {
// Define a new deployment
dep := r.createMasterService(seaweedCR)
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log.Info("Creating a new master service", "Namespace", dep.Namespace, "Name", dep.Name)
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err = r.Create(ctx, dep)
if err != nil {
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log.Error(err, "Failed to create master service", "Namespace", dep.Namespace, "Name", dep.Name)
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return ReconcileResult(err)
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}
// Deployment created successfully - return and requeue
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return ReconcileResult(err)
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} else if err != nil {
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log.Error(err, "Failed to get master service", "Namespace", seaweedCR.Namespace, "Name", seaweedCR.Name+"-master")
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return ReconcileResult(err)
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}
log.Info("Get master service " + masterService.Name)
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return ReconcileResult(err)
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}
func labelsForMaster(name string) map[string]string {
return map[string]string{"app": "seaweedfs", "role": "master", "name": name}
}