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Sustain service broker registration (#76)
sustain broker registration if service instances exists
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| package controller | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| "github.com/kubernetes-incubator/service-catalog/pkg/apis/servicecatalog/v1beta1" | ||
| "github.com/kyma-project/helm-broker/internal/controller/broker" | ||
| "github.com/kyma-project/helm-broker/pkg/apis/addons/v1alpha1" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| "sigs.k8s.io/controller-runtime/pkg/controller" | ||
| "sigs.k8s.io/controller-runtime/pkg/event" | ||
| "sigs.k8s.io/controller-runtime/pkg/handler" | ||
| "sigs.k8s.io/controller-runtime/pkg/manager" | ||
| "sigs.k8s.io/controller-runtime/pkg/predicate" | ||
| "sigs.k8s.io/controller-runtime/pkg/reconcile" | ||
| "sigs.k8s.io/controller-runtime/pkg/source" | ||
| ) | ||
|
|
||
| // BrokerController is a controller which reacts on changes for ServiceInstance, ServiceBroker and AddonsConfiguration. | ||
| // Only this controller should create/delete ServiceBroker. | ||
| type BrokerController struct { | ||
| instanceChecker instanceChecker | ||
| cli client.Client | ||
|
|
||
| namespacedBrokerFacade brokerFacade | ||
| } | ||
|
|
||
| var createDeletePredicate = predicate.Funcs{ | ||
| CreateFunc: func(_ event.CreateEvent) bool { return true }, | ||
| DeleteFunc: func(_ event.DeleteEvent) bool { return true }, | ||
| UpdateFunc: func(_ event.UpdateEvent) bool { return false }, | ||
| } | ||
|
|
||
| var eventHandler = &handler.EnqueueRequestsFromMapFunc{ | ||
| ToRequests: handler.ToRequestsFunc( | ||
| func(mp handler.MapObject) []reconcile.Request { | ||
| return []reconcile.Request{{NamespacedName: types.NamespacedName{Namespace: mp.Meta.GetNamespace()}}} | ||
| }, | ||
| )} | ||
|
|
||
| // NewBrokerController creates BrokerController instance. | ||
| func NewBrokerController(checker instanceChecker, cli client.Client, bFacade brokerFacade) *BrokerController { | ||
| return &BrokerController{ | ||
| instanceChecker: checker, | ||
| cli: cli, | ||
| namespacedBrokerFacade: bFacade, | ||
| } | ||
| } | ||
|
|
||
| // Start starts the controller | ||
| func (sbc *BrokerController) Start(mgr manager.Manager) error { | ||
| // Create a new controller | ||
| c, err := controller.New("broker-controller", mgr, controller.Options{Reconciler: sbc}) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| // Watch for changes to ServiceInstance | ||
| err = c.Watch(&source.Kind{Type: &v1beta1.ServiceInstance{}}, eventHandler, createDeletePredicate) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| err = c.Watch(&source.Kind{Type: &v1alpha1.AddonsConfiguration{}}, eventHandler, createDeletePredicate) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| err = c.Watch(&source.Kind{Type: &v1beta1.ServiceBroker{}}, eventHandler, predicate.Funcs{ | ||
| CreateFunc: func(e event.CreateEvent) bool { return e.Meta.GetName() == broker.NamespacedBrokerName }, | ||
| DeleteFunc: func(e event.DeleteEvent) bool { return e.Meta.GetName() == broker.NamespacedBrokerName }, | ||
| UpdateFunc: func(_ event.UpdateEvent) bool { return false }, | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| // Reconcile checks if the (cluster) service broker must be removed | ||
| func (sbc *BrokerController) Reconcile(request reconcile.Request) (reconcile.Result, error) { | ||
| currentNamespace := request.Namespace | ||
|
|
||
| sbc.namespacedBrokerFacade.SetNamespace(request.Namespace) | ||
| sbExists, err := sbc.namespacedBrokerFacade.Exist() | ||
| if err != nil { | ||
| return reconcile.Result{}, err | ||
| } | ||
| // list addons configurations | ||
| acList := v1alpha1.AddonsConfigurationList{} | ||
| err = sbc.cli.List(context.TODO(), &client.ListOptions{Namespace: currentNamespace}, &acList) | ||
| if err != nil { | ||
| return reconcile.Result{}, err | ||
| } | ||
| anyNamespacedConfigExists := len(acList.Items) > 0 | ||
|
|
||
| instanceByNamespacedExists, err := sbc.instanceChecker.AnyServiceInstanceExistsForNamespacedServiceBroker(currentNamespace) | ||
| if err != nil { | ||
| return reconcile.Result{}, err | ||
| } | ||
| if sbExists && !anyNamespacedConfigExists && !instanceByNamespacedExists { | ||
| sbc.namespacedBrokerFacade.Delete() | ||
| } | ||
| if !sbExists && (anyNamespacedConfigExists || instanceByNamespacedExists) { | ||
| sbc.namespacedBrokerFacade.Create() | ||
| } | ||
|
|
||
| return reconcile.Result{}, nil | ||
| } |
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