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Dynamically start prometheus and service monitor
Signed-off-by: Tamal Saha <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| /* | ||
| Copyright AppsCode Inc. and Contributors | ||
| 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 apiextensions | ||
|
|
||
| import ( | ||
| "context" | ||
| "sync" | ||
|
|
||
| apiextensions "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1" | ||
| "k8s.io/apimachinery/pkg/runtime/schema" | ||
| ctrl "sigs.k8s.io/controller-runtime" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| "sigs.k8s.io/controller-runtime/pkg/log" | ||
| ) | ||
|
|
||
| type SetupFn func(ctx context.Context, mgr ctrl.Manager) | ||
|
|
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| var setupFns = map[schema.GroupKind]SetupFn{ | ||
| // schema.GroupKind{"compute.gcp.kubedb.com", "Firewall"}: firewall.Setup, | ||
| } | ||
|
|
||
| var ( | ||
| setupDone = map[schema.GroupKind]bool{} | ||
| mu sync.Mutex | ||
| ) | ||
|
|
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| type Reconciler struct { | ||
| ctx context.Context | ||
| mgr ctrl.Manager | ||
| } | ||
|
|
||
| func NewReconciler(ctx context.Context, mgr ctrl.Manager) *Reconciler { | ||
| return &Reconciler{ctx: ctx, mgr: mgr} | ||
| } | ||
|
|
||
| func (r *Reconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) { | ||
| log := log.FromContext(ctx) | ||
| var crd apiextensions.CustomResourceDefinition | ||
| if err := r.mgr.GetClient().Get(ctx, req.NamespacedName, &crd); err != nil { | ||
| log.Error(err, "unable to fetch CustomResourceDefinition") | ||
| return ctrl.Result{}, client.IgnoreNotFound(err) | ||
| } | ||
|
|
||
| gk := schema.GroupKind{ | ||
| Group: crd.Spec.Group, | ||
| Kind: crd.Spec.Names.Kind, | ||
| } | ||
| mu.Lock() | ||
| defer mu.Unlock() | ||
| _, found := setupDone[gk] | ||
| if found { | ||
| return ctrl.Result{}, nil | ||
| } | ||
| setup, found := setupFns[gk] | ||
| if found { | ||
| setup(r.ctx, r.mgr) | ||
| setupDone[gk] = true | ||
| } | ||
| return ctrl.Result{}, nil | ||
| } | ||
|
|
||
| func (r *Reconciler) SetupWithManager(mgr ctrl.Manager) error { | ||
| return ctrl.NewControllerManagedBy(mgr). | ||
| For(&apiextensions.CustomResourceDefinition{}). | ||
| Complete(r) | ||
| } | ||
|
|
||
| func RegisterSetup(gk schema.GroupKind, fn SetupFn) { | ||
| mu.Lock() | ||
| defer mu.Unlock() | ||
|
|
||
| setupFns[gk] = fn | ||
| } |
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