Address code review comments

Add some documentation.
Create new util.InitFlags() function to merge and parse in one step.

cmd/e2e/e2e.go

@@ -700,8 +700,7 @@ func TestPodHasServiceEnvVars(c *client.Client) bool {
 }
 
 func main() {
-	util.AddAllFlagsToPFlags()
+	util.InitFlags()
-	flag.Parse()
 	goruntime.GOMAXPROCS(goruntime.NumCPU())
 	util.ReallyCrash = true
 	util.InitLogs()

cmd/integration/integration.go

@@ -53,7 +53,6 @@ import (
 
 	"github.com/coreos/go-etcd/etcd"
 	"github.com/golang/glog"
-	flag "github.com/spf13/pflag"
 )
 
 var (
@@ -563,8 +562,7 @@ func runServiceTest(client *client.Client) {
 type testFunc func(*client.Client)
 
 func main() {
-	util.AddAllFlagsToPFlags()
+	util.InitFlags()
-	flag.Parse()
 	runtime.GOMAXPROCS(runtime.NumCPU())
 	util.ReallyCrash = true
 	util.InitLogs()

cmd/kube-apiserver/apiserver.go

@@ -124,8 +124,7 @@ func newEtcd(etcdConfigFile string, etcdServerList util.StringList) (helper tool
 }
 
 func main() {
-	util.AddAllFlagsToPFlags()
+	util.InitFlags()
-	flag.Parse()
 	util.InitLogs()
 	defer util.FlushLogs()
 

cmd/kube-controller-manager/controller-manager.go

@@ -75,8 +75,7 @@ func verifyMinionFlags() {
 }
 
 func main() {
-	util.AddAllFlagsToPFlags()
+	util.InitFlags()
-	flag.Parse()
 	util.InitLogs()
 	defer util.FlushLogs()
 

cmd/kube-proxy/proxy.go

@@ -53,8 +53,7 @@ func init() {
 }
 
 func main() {
-	util.AddAllFlagsToPFlags()
+	util.InitFlags()
-	flag.Parse()
 	util.InitLogs()
 	defer util.FlushLogs()
 

cmd/kubelet/kubelet.go

@@ -90,8 +90,7 @@ func setupRunOnce() {
 }
 
 func main() {
-	util.AddAllFlagsToPFlags()
+	util.InitFlags()
-	flag.Parse()
 	util.InitLogs()
 	defer util.FlushLogs()
 	rand.Seed(time.Now().UTC().UnixNano())

cmd/kubernetes/kubernetes.go

@@ -66,8 +66,7 @@ func newApiClient(addr string, port int) *client.Client {
 }
 
 func main() {
-	util.AddAllFlagsToPFlags()
+	util.InitFlags()
-	flag.Parse()
 	util.InitLogs()
 	defer util.FlushLogs()
 

pkg/util/flags.go

@@ -0,0 +1,27 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+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 util
+
+import (
+	flag "github.com/spf13/pflag"
+)
+
+// InitFlags normalizes and parses the command line flags
+func InitFlags() {
+	AddAllFlagsToPFlags()
+	flag.Parse()
+}

pkg/version/verflag/verflag.go

@@ -66,6 +66,7 @@ func (v *versionValue) String() string {
 	return fmt.Sprintf("%v", bool(*v == VersionTrue))
 }
 
+// The type of the flag as requred by the pflag.Value interface
 func (v *versionValue) Type() string {
 	return "version"
 }

plugin/cmd/kube-scheduler/scheduler.go

@@ -48,8 +48,7 @@ func init() {
 }
 
 func main() {
-	util.AddAllFlagsToPFlags()
+	util.InitFlags()
-	flag.Parse()
 	util.InitLogs()
 	defer util.FlushLogs()