Extract etcd options from genericapiserver.

pkg/genericapiserver/validation/universal_validation.go

@@ -0,0 +1,64 @@
+/*
+Copyright 2014 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 validation
+
+import (
+	"github.com/golang/glog"
+	"k8s.io/kubernetes/pkg/genericapiserver/options"
+)
+
+// TODO: Longer term we should read this from some config store, rather than a flag.
+func verifyClusterIPFlags(options *options.ServerRunOptions) {
+	if options.ServiceClusterIPRange.IP == nil {
+		glog.Fatal("No --service-cluster-ip-range specified")
+	}
+	var ones, bits = options.ServiceClusterIPRange.Mask.Size()
+	if bits-ones > 20 {
+		glog.Fatal("Specified --service-cluster-ip-range is too large")
+	}
+}
+
+func verifyServiceNodePort(options *options.ServerRunOptions) {
+	if options.KubernetesServiceNodePort < 0 || options.KubernetesServiceNodePort > 65535 {
+		glog.Fatalf("--kubernetes-service-node-port %v must be between 0 and 65535, inclusive. If 0, the Kubernetes master service will be of type ClusterIP.", options.KubernetesServiceNodePort)
+	}
+
+	if options.KubernetesServiceNodePort > 0 && !options.ServiceNodePortRange.Contains(options.KubernetesServiceNodePort) {
+		glog.Fatalf("Kubernetes service port range %v doesn't contain %v", options.ServiceNodePortRange, (options.KubernetesServiceNodePort))
+	}
+}
+
+func verifySecureAndInsecurePort(options *options.ServerRunOptions) {
+	if options.SecurePort < 0 || options.SecurePort > 65535 {
+		glog.Fatalf("--secure-port %v must be between 0 and 65535, inclusive. 0 for turning off secure port.", options.SecurePort)
+	}
+
+	// TODO: Allow 0 to turn off insecure port.
+	if options.InsecurePort < 1 || options.InsecurePort > 65535 {
+		glog.Fatalf("--insecure-port %v must be between 1 and 65535, inclusive.", options.InsecurePort)
+	}
+
+	if options.SecurePort == options.InsecurePort {
+		glog.Fatalf("--secure-port and --insecure-port cannot use the same port.")
+	}
+}
+
+func ValidateRunOptions(options *options.ServerRunOptions) {
+	verifyClusterIPFlags(options)
+	verifyServiceNodePort(options)
+	verifySecureAndInsecurePort(options)
+}