Merge pull request kubernetes-sigs#6 from varshaprasad96/fix-watch-admin-cluster

Create minimal clusterscoped cache

Author: fabianvf

examples/kcp/main.go

@@ -74,7 +74,7 @@ func (r *reconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Resu
 		},
 	}
 	if err := r.Create(ctx, cm); err != nil {
-		log.Info("CM creation fialed")
+		log.Info("CM creation failed", err)
 		// log.Error(err, "this is fine")
 		return ctrl.Result{}, nil
 	}
@@ -88,7 +88,7 @@ func main() {
 
 	cfg := ctrl.GetConfigOrDie()
 	mgr, err := ctrl.NewManager(cfg, ctrl.Options{
-		NewCache: cache.MultiClusterCacheBuilder([]string{"*"}),
+		NewCache: cache.MultiClusterMinCache(),
 	})
 	if err != nil {
 		setupLog.Error(err, "unable to start manager")

pkg/cache/clusterscoped_cache.go

@@ -0,0 +1,34 @@
+/*
+Copyright 2019 The Kubernetes 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 cache
+
+import "k8s.io/client-go/rest"
+
+func MultiClusterMinCache() NewCacheFunc {
+	return func(config *rest.Config, opts Options) (Cache, error) {
+		opts, err := defaultOpts(config, opts)
+		if err != nil {
+			return nil, err
+		}
+
+		globalConfig := *config
+		globalConfig.Host = globalConfig.Host + "/clusters/*"
+
+		return New(&globalConfig, opts)
+	}
+
+}