feet: add finalizer

cmd/operator/main.go

@@ -2,7 +2,7 @@ package main
 
 import (
 	"flink-kube-operator/internal/crd"
-	"flink-kube-operator/internal/manager"
+	"flink-kube-operator/internal/managed_job"
 	"flink-kube-operator/internal/rest"
 	"flink-kube-operator/pkg"
 	"log"
@@ -31,7 +31,7 @@ func main() {
 	pkg.Logger.Info("[main]", zap.Any("cluster-config", clusterConfig))
 
 	// init flink job manager
-	manager.NewManager(c, crdInstance)
+	managed_job.NewManager(c, crdInstance)
 
 	// for _, jobDef := range config.Jobs {
 	// 	managed_job.NewManagedJob(c, db, jobDef)

internal/crd/finalizer.go

@@ -1,14 +1,60 @@
 package crd
 
 import (
+	"context"
+	"flink-kube-operator/internal/crd/v1alpha1"
+	"flink-kube-operator/pkg"
+
 	"github.com/reactivex/rxgo/v2"
+	"go.uber.org/zap"
+	"k8s.io/apimachinery/pkg/types"
 	"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
 )
 
+var FinalizerChannel chan (types.UID) = make(chan (types.UID))
+
 func (crd Crd) manageFinalizer(jobEventObservable rxgo.Observable) {
+
+	finalizerName := "flink-operator.logicamp.tech/finalizer"
 	for j := range jobEventObservable.Observe() {
 		jobEvent := j.V.(*FlinkJobCrdEvent)
-		//pkg.Logger.Debug("[crd] [manage-finalizer] adding finalizer for", zap.String("name", jobEvent.Job.GetName()))
+
-		controllerutil.AddFinalizer(jobEvent.Job, "")
+		if jobEvent.Job.GetDeletionTimestamp() != nil {
+			// Resource is being deleted
+			if controllerutil.ContainsFinalizer(jobEvent.Job, finalizerName) {
+				// Perform cleanup
+				pkg.Logger.Debug("[finalizer] stopping managed job", zap.String("name", jobEvent.Job.GetName()))
+				if err := crd.cleanupResources(jobEvent.Job); err != nil {
+					pkg.Logger.Error("[crd] [manage-finalizer] cleanup failed", zap.Error(err))
+					return
+				}
+
+				// Remove finalizer
+				controllerutil.RemoveFinalizer(jobEvent.Job, finalizerName)
+				if err := crd.runtimeClient.Update(context.Background(), jobEvent.Job); err != nil {
+					pkg.Logger.Error("[crd] [manage-finalizer] failed to remove finalizer", zap.Error(err))
+					return
+				}
+				pkg.Logger.Debug("[crd] [manage-finalizer] job removed", zap.String("name", jobEvent.Job.GetName()))
+
+			}
+			return
+		}
+
+		// Add finalizer if not present
+		if !controllerutil.ContainsFinalizer(jobEvent.Job, finalizerName) {
+			controllerutil.AddFinalizer(jobEvent.Job, finalizerName)
+			pkg.Logger.Debug("[finalizer] adding job")
+			// Update the resource to add the finalizer
+			if err := crd.runtimeClient.Update(context.Background(), jobEvent.Job); err != nil {
+				pkg.Logger.Error("[finalizer] failed to add", zap.Error(err))
+				return
 			}
 		}
+	}
+}
+
+func (crd Crd) cleanupResources(job *v1alpha1.FlinkJob) error {
+	FinalizerChannel <- job.GetUID()
+	return nil
+}

internal/crd/new.go

@@ -3,36 +3,48 @@ package crd
 import (
 	"flink-kube-operator/internal/crd/v1alpha1"
 
+	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/client-go/dynamic"
 	"k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/clientcmd"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/client/config"
 )
 
 type Crd struct {
 	client        dynamic.NamespaceableResourceInterface
+	runtimeClient client.Client
 }
 
 func New() *Crd {
-	// Get Kubernetes config
+	// Get Kubernetes config_
-	config, err := clientcmd.BuildConfigFromFlags("", clientcmd.RecommendedHomeFile)
+	config_, err := clientcmd.BuildConfigFromFlags("", clientcmd.RecommendedHomeFile)
 	if err != nil {
-		config, err = rest.InClusterConfig()
+		config_, err = rest.InClusterConfig()
 		if err != nil {
 			panic(err)
 		}
 	}
 
 	// Create dynamic client
-	dynamicClient, err := dynamic.NewForConfig(config)
+	dynamicClient, err := dynamic.NewForConfig(config_)
 	if err != nil {
 		panic(err)
 	}
 
+	shema := runtime.NewScheme()
+	v1alpha1.AddKnownTypes(shema)
 	// Get FlinkJob resource interface
 	flinkJobClient := dynamicClient.Resource(v1alpha1.FlinkJobGVR)
-
+	runtimeClient, err := client.New(config.GetConfigOrDie(), client.Options{
+		Scheme: shema,
+	})
+	if err != nil {
+		panic(err)
+	}
 	crd := Crd{
 		client:        flinkJobClient,
+		runtimeClient: runtimeClient,
 	}
 
 	// Watch for FlinkJob creation

internal/crd/patch.go

@@ -14,7 +14,7 @@ import (
 
 func (crd *Crd) Patch(jobUid types.UID, patchData map[string]interface{}) error {
 	job := GetJob(jobUid)
-	pkg.Logger.Debug("[patch-job]", zap.Any("jobUid", jobUid))
+	// pkg.Logger.Debug("[patch-job]", zap.Any("jobUid", jobUid))
 
 	patchBytes, err := json.Marshal(patchData)
 	if err != nil {

internal/crd/repo.go

@@ -14,6 +14,10 @@ func (crd *Crd) repsert(job *v1alpha1.FlinkJob) {
 	jobs.Store(job.GetUID(), job)
 }
 
+func (crd *Crd) remove(uid types.UID) {
+	jobs.Delete(uid)
+}
+
 func GetJob(uid types.UID) v1alpha1.FlinkJob {
 	job, _ := jobs.Load(uid)
 	return *job.DeepCopy()

internal/crd/v1alpha1/register.go

@@ -20,11 +20,11 @@ var FlinkJobGVR = schema.GroupVersionResource{
 }
 
 var (
-	SchemeBuilder = runtime.NewSchemeBuilder(addKnownTypes)
+	SchemeBuilder = runtime.NewSchemeBuilder(AddKnownTypes)
 	AddToScheme   = SchemeBuilder.AddToScheme
 )
 
-func addKnownTypes(scheme *runtime.Scheme) error {
+func AddKnownTypes(scheme *runtime.Scheme) error {
 	scheme.AddKnownTypes(SchemeGroupVersion,
 		&FlinkJob{},
 		&FlinkJobList{},

internal/crd/watch.go

@@ -56,6 +56,8 @@ func (crd Crd) watchFlinkJobs() rxgo.Observable {
 				//pkg.Logger.Info("[crd] [watch] new flink job created")
 				crd.repsert(job)
 			case watch.Deleted:
+				crd.remove(job.UID)
+
 			}
 		}
 

internal/managed_job/cycle.go

@@ -10,7 +10,7 @@ import (
 )
 
 func (job *ManagedJob) Cycle() {
-	pkg.Logger.Debug("[managed-job] [new] check cycle", zap.String("jobName", job.def.GetName()))
+	// pkg.Logger.Debug("[managed-job] [new] check cycle", zap.String("jobName", job.def.GetName()))
 
 	// Init job
 	if job.def.Status.LifeCycleStatus == "" && job.def.Status.JobStatus == "" {

internal/managed_job/manager.go

@@ -1,9 +1,8 @@
-package manager
+package managed_job
 
 import (
 	"flink-kube-operator/internal/crd"
 	"flink-kube-operator/internal/crd/v1alpha1"
-	"flink-kube-operator/internal/managed_job"
 	"time"
 
 	"flink-kube-operator/pkg"
@@ -16,7 +15,7 @@ import (
 
 type Manager struct {
 	client            *api.Client
-	managedJobs       map[types.UID]managed_job.ManagedJob
+	managedJobs       map[types.UID]ManagedJob
 	processingJobsIds []types.UID
 }
 
@@ -31,7 +30,7 @@ func NewManager(client *api.Client, crdInstance *crd.Crd) Manager {
 	quit := make(chan struct{})
 	mgr = Manager{
 		client:            client,
-		managedJobs:       map[types.UID]managed_job.ManagedJob{},
+		managedJobs:       map[types.UID]ManagedJob{},
 		processingJobsIds: []types.UID{},
 	}
 
@@ -47,6 +46,15 @@ func NewManager(client *api.Client, crdInstance *crd.Crd) Manager {
 			}
 		}
 	}()
+
+	go func() {
+		for event := range crd.FinalizerChannel {
+			manager := mgr.GetJob(event)
+			manager.Stop()
+			delete(mgr.managedJobs, event)
+		}
+	}()
+
 	return mgr
 }
 
@@ -64,7 +72,7 @@ func (mgr *Manager) cycle(client *api.Client, crdInstance *crd.Crd) {
 
 	// Loop over job definitions as Kubernetes CRD
 	for _, uid := range crd.GetAllJobKeys() {
-		pkg.Logger.Debug("mgr.processingJobsIds", zap.Any("processingJobIds", mgr.processingJobsIds))
+		// pkg.Logger.Debug("mgr.processingJobsIds", zap.Any("processingJobIds", mgr.processingJobsIds))
 		if lo.Contains(mgr.processingJobsIds, uid) {
 			pkg.Logger.Warn("[manager] already in process", zap.Any("uid", uid))
 			continue
@@ -80,7 +88,7 @@ func (mgr *Manager) cycle(client *api.Client, crdInstance *crd.Crd) {
 			managedJob.Update(def)
 		} else {
 			// Add job to manager managed job
-			managedJob = *managed_job.NewManagedJob(client, def, crdInstance)
+			managedJob = *NewManagedJob(client, def, crdInstance)
 		}
 		if jobManagerJobStatusError != nil {
 
@@ -94,7 +102,7 @@ func (mgr *Manager) cycle(client *api.Client, crdInstance *crd.Crd) {
 			return false
 		})
 		if ok {
-			pkg.Logger.Debug("[manager] read status from flink", zap.String("name", jobManagerJobOverview.Name), zap.String("state", jobManagerJobOverview.State))
+			// pkg.Logger.Debug("[manager] read status from flink", zap.String("name", jobManagerJobOverview.Name), zap.String("state", jobManagerJobOverview.State))
 			patchStatusObj := map[string]interface{}{
 				"jobStatus": v1alpha1.JobStatus(jobManagerJobOverview.State),
 			}
@@ -117,10 +125,10 @@ func (mgr *Manager) cycle(client *api.Client, crdInstance *crd.Crd) {
 	}
 }
 
-func (mgr *Manager) GetJobs() map[types.UID]managed_job.ManagedJob {
+func (mgr *Manager) GetJobs() map[types.UID]ManagedJob {
 	return mgr.managedJobs
 }
 
-func (mgr *Manager) GetJob(id types.UID) managed_job.ManagedJob {
+func (mgr *Manager) GetJob(id types.UID) ManagedJob {
 	return mgr.managedJobs[id]
 }

internal/rest/controller/crd.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"flink-kube-operator/internal/crd"
 	"flink-kube-operator/internal/crd/v1alpha1"
-	"flink-kube-operator/internal/manager"
+	"flink-kube-operator/internal/managed_job"
 
 	"k8s.io/apimachinery/pkg/types"
 )
@@ -39,7 +39,7 @@ type StopJobResp struct {
 }
 
 func StopJob(ctx context.Context, req *StopJobReq) (*StopJobResp, error) {
-	mgr := manager.GetManager()
+	mgr := managed_job.GetManager()
 	job := mgr.GetJob(types.UID(req.JobUId))
 	err := job.Stop()
 	if err != nil {
@@ -51,7 +51,7 @@ func StopJob(ctx context.Context, req *StopJobReq) (*StopJobResp, error) {
 }
 
 func StartJob(ctx context.Context, req *StopJobReq) (*StopJobResp, error) {
-	mgr := manager.GetManager()
+	mgr := managed_job.GetManager()
 	job := mgr.GetJob(types.UID(req.JobUId))
 	err := job.Run(true)
 	if err != nil {
@@ -63,7 +63,7 @@ func StartJob(ctx context.Context, req *StopJobReq) (*StopJobResp, error) {
 }
 
 func RemoveJobJar(ctx context.Context, req *StopJobReq) (*StopJobResp, error) {
-	mgr := manager.GetManager()
+	mgr := managed_job.GetManager()
 	job := mgr.GetJob(types.UID(req.JobUId))
 	job.RemoveJar()
 	return &StopJobResp{Body: StopJobRespBody{
@@ -72,7 +72,7 @@ func RemoveJobJar(ctx context.Context, req *StopJobReq) (*StopJobResp, error) {
 }
 
 func PauseJob(ctx context.Context, req *StopJobReq) (*StopJobResp, error) {
-	mgr := manager.GetManager()
+	mgr := managed_job.GetManager()
 	job := mgr.GetJob(types.UID(req.JobUId))
 	job.Pause()
 	return &StopJobResp{Body: StopJobRespBody{