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app/vmauth: print brief usage info for vmauth -help

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This commit is contained in:
Aliaksandr Valialkin 2020-06-05 10:39:46 +03:00
parent 05ae1472e3
commit ff1a725a56
1 changed files with 14 additions and 0 deletions
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14
app/vmauth/main.go
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@ -2,6 +2,7 @@ package main
import ( import (
"flag" "flag"
"fmt"
"net/http" "net/http"
"net/http/httputil" "net/http/httputil"
"net/url" "net/url"
@ -22,6 +23,7 @@ var (
func main() { func main() {
// Write flags and help message to stdout, since it is easier to grep or pipe. // Write flags and help message to stdout, since it is easier to grep or pipe.
flag.CommandLine.SetOutput(os.Stdout) flag.CommandLine.SetOutput(os.Stdout)
flag.Usage = usage
envflag.Parse() envflag.Parse()
buildinfo.Init() buildinfo.Init()
logger.Init() logger.Init()
@ -80,3 +82,15 @@ var reverseProxy = &httputil.ReverseProxy{
FlushInterval: time.Second, FlushInterval: time.Second,
ErrorLog: logger.StdErrorLogger(), ErrorLog: logger.StdErrorLogger(),
} }
func usage() {
const s = `
vmauth authenticates and authorizes incoming requests and proxies them to VictoriaMetrics.
See the docs at https://github.com/VictoriaMetrics/VictoriaMetrics/blob/master/app/vmauth/README.md .
`
f := flag.CommandLine.Output()
fmt.Fprintf(f, "%s\n", s)
flag.PrintDefaults()
}