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*-controller-manager: fix missing global flags for --help 

Kubernetes-commit: 10dd5d663197abae40374c3eaa5c0ec2b638a234
This commit is contained in:
Jay Lim 2018-11-21 10:46:27 +08:00 committed by Kubernetes Publisher
parent 8d90f74522
commit 70d40a2bc9
1 changed files with 14 additions and 20 deletions
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34
pkg/util/globalflag/globalflags.go
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@ -19,7 +19,6 @@ package globalflag
import (
"flag"
"fmt"
"os"
"strings"
"github.com/spf13/pflag"
@ -28,7 +27,7 @@ import (
)
// AddGlobalFlags explicitly registers flags that libraries (klog, verflag, etc.) register
// against the global flagsets from "flag" and "github.com/spf13/pflag".
// against the global flagsets from "flag" and "k8s.io/klog".
// We do this in order to prevent unwanted flags from leaking into the component's flagset.
func AddGlobalFlags(fs *pflag.FlagSet, name string) {
addGlogFlags(fs)
@ -39,21 +38,16 @@ func AddGlobalFlags(fs *pflag.FlagSet, name string) {
// addGlogFlags explicitly registers flags that klog libraries(k8s.io/klog) register.
func addGlogFlags(fs *pflag.FlagSet) {
// lookup flags in global flag set and re-register the values with our flagset
global := flag.CommandLine
local := pflag.NewFlagSet(os.Args[0], pflag.ExitOnError)
register(global, local, "logtostderr")
register(global, local, "alsologtostderr")
register(global, local, "v")
register(global, local, "skip_headers")
register(global, local, "stderrthreshold")
register(global, local, "vmodule")
register(global, local, "log_backtrace_at")
register(global, local, "log_dir")
register(global, local, "log_file")
fs.AddFlagSet(local)
// lookup flags of klog libraries in global flag set and re-register the values with our flagset
Register(fs, "logtostderr")
Register(fs, "alsologtostderr")
Register(fs, "v")
Register(fs, "skip_headers")
Register(fs, "stderrthreshold")
Register(fs, "vmodule")
Register(fs, "log_backtrace_at")
Register(fs, "log_dir")
Register(fs, "log_file")
}
// normalize replaces underscores with hyphens
@ -62,9 +56,9 @@ func normalize(s string) string {
return strings.Replace(s, "_", "-", -1)
}
// register adds a flag to local that targets the Value associated with the Flag named globalName in global
func register(global *flag.FlagSet, local *pflag.FlagSet, globalName string) {
if f := global.Lookup(globalName); f != nil {
// Register adds a flag to local that targets the Value associated with the Flag named globalName in flag.CommandLine.
func Register(local *pflag.FlagSet, globalName string) {
if f := flag.CommandLine.Lookup(globalName); f != nil {
pflagFlag := pflag.PFlagFromGoFlag(f)
pflagFlag.Name = normalize(pflagFlag.Name)
local.AddFlag(pflagFlag)