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131 changes: 131 additions & 0 deletions
131
poollet/machinepoollet/controllers/machinepoolannotator_controller.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,131 @@ | ||
| // Copyright 2022 OnMetal authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package controllers | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
|
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| "github.com/go-logr/logr" | ||
| computev1alpha1 "github.com/onmetal/onmetal-api/api/compute/v1alpha1" | ||
| "github.com/onmetal/onmetal-api/poollet/machinepoollet/mcm" | ||
| "github.com/onmetal/onmetal-api/poollet/orievent" | ||
| onmetalapiclient "github.com/onmetal/onmetal-api/utils/client" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| ctrl "sigs.k8s.io/controller-runtime" | ||
| "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/source" | ||
| ) | ||
|
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| type MachinePoolAnnotatorReconciler struct { | ||
| client.Client | ||
|
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| MachinePoolName string | ||
| MachineClassMapper mcm.MachineClassMapper | ||
| } | ||
|
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| func (r *MachinePoolAnnotatorReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) { | ||
| machinePool := &computev1alpha1.MachinePool{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: req.Name, | ||
| }, | ||
| } | ||
|
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| if err := onmetalapiclient.PatchAddReconcileAnnotation(ctx, r.Client, machinePool); client.IgnoreNotFound(err) != nil { | ||
| return ctrl.Result{}, fmt.Errorf("error patching machine pool: %w", err) | ||
| } | ||
| return ctrl.Result{}, nil | ||
| } | ||
|
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| func (r *MachinePoolAnnotatorReconciler) SetupWithManager(mgr ctrl.Manager) error { | ||
| c, err := controller.New("machinepoolannotator", mgr, controller.Options{ | ||
| Reconciler: r, | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| src, err := r.oriClassEventSource(mgr) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| if err := c.Watch(src, handler.EnqueueRequestsFromMapFunc(func(ctx context.Context, obj client.Object) []ctrl.Request { | ||
| return []ctrl.Request{{NamespacedName: client.ObjectKey{Name: r.MachinePoolName}}} | ||
| })); err != nil { | ||
| return err | ||
| } | ||
|
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| return nil | ||
| } | ||
|
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| func (r *MachinePoolAnnotatorReconciler) machinePoolAnnotatorEventHandler(log logr.Logger, c chan<- event.GenericEvent) orievent.EnqueueFunc { | ||
| handleEvent := func() { | ||
| select { | ||
| case c <- event.GenericEvent{Object: &computev1alpha1.MachinePool{ObjectMeta: metav1.ObjectMeta{ | ||
| Name: r.MachinePoolName, | ||
| }}}: | ||
| log.V(1).Info("Added item to queue") | ||
| default: | ||
| log.V(5).Info("Channel full, discarding event") | ||
| } | ||
| } | ||
|
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| return orievent.EnqueueFunc{EnqueueFunc: handleEvent} | ||
| } | ||
|
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| func (r *MachinePoolAnnotatorReconciler) oriClassEventSource(mgr ctrl.Manager) (source.Source, error) { | ||
| ch := make(chan event.GenericEvent, 1024) | ||
|
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| if err := mgr.Add(manager.RunnableFunc(func(ctx context.Context) error { | ||
| log := ctrl.LoggerFrom(ctx).WithName("machinepool").WithName("orieventhandlers") | ||
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| notifierFuncs := []func() (orievent.ListenerRegistration, error){ | ||
| func() (orievent.ListenerRegistration, error) { | ||
| return r.MachineClassMapper.AddListener(r.machinePoolAnnotatorEventHandler(log, ch)) | ||
| }, | ||
| } | ||
|
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| var notifier []orievent.ListenerRegistration | ||
| defer func() { | ||
| log.V(1).Info("Removing notifier") | ||
| for _, n := range notifier { | ||
| if err := r.MachineClassMapper.RemoveListener(n); err != nil { | ||
| log.Error(err, "Error removing handle") | ||
| } | ||
| } | ||
| }() | ||
|
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| for _, notifierFunc := range notifierFuncs { | ||
| ntf, err := notifierFunc() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| notifier = append(notifier, ntf) | ||
| } | ||
|
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| <-ctx.Done() | ||
| return nil | ||
| })); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| return &source.Channel{Source: ch}, nil | ||
| } |
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