move some option struct from controller manager to kube-controller manager

cmd/kube-controller-manager/app/options/namespacecontroller.go

@@ -0,0 +1,62 @@
+/*
+Copyright 2018 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 options
+
+import (
+	"github.com/spf13/pflag"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/kubernetes/pkg/apis/componentconfig"
+)
+
+// NamespaceControllerOptions holds the NamespaceController options.
+type NamespaceControllerOptions struct {
+	NamespaceSyncPeriod      metav1.Duration
+	ConcurrentNamespaceSyncs int32
+}
+
+// AddFlags adds flags related to NamespaceController for controller manager to the specified FlagSet.
+func (o *NamespaceControllerOptions) AddFlags(fs *pflag.FlagSet) {
+	if o == nil {
+		return
+	}
+
+	fs.DurationVar(&o.NamespaceSyncPeriod.Duration, "namespace-sync-period", o.NamespaceSyncPeriod.Duration, "The period for syncing namespace life-cycle updates")
+	fs.Int32Var(&o.ConcurrentNamespaceSyncs, "concurrent-namespace-syncs", o.ConcurrentNamespaceSyncs, "The number of namespace objects that are allowed to sync concurrently. Larger number = more responsive namespace termination, but more CPU (and network) load")
+}
+
+// ApplyTo fills up NamespaceController config with options.
+func (o *NamespaceControllerOptions) ApplyTo(cfg *componentconfig.NamespaceControllerConfiguration) error {
+	if o == nil {
+		return nil
+	}
+
+	cfg.NamespaceSyncPeriod = o.NamespaceSyncPeriod
+	cfg.ConcurrentNamespaceSyncs = o.ConcurrentNamespaceSyncs
+
+	return nil
+}
+
+// Validate checks validation of NamespaceControllerOptions.
+func (o *NamespaceControllerOptions) Validate() []error {
+	if o == nil {
+		return nil
+	}
+
+	errs := []error{}
+	return errs
+}