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app/victoria-metrics: show usage info when incorrect command-line flag is passed to executable

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This commit is contained in:
Aliaksandr Valialkin 2020-12-25 16:40:20 +02:00
parent 86630350bf
commit fb338c50a3
1 changed files with 11 additions and 0 deletions
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11
app/victoria-metrics/main.go
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@ -15,6 +15,7 @@ import (
"github.com/VictoriaMetrics/VictoriaMetrics/app/vmstorage"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/buildinfo"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/envflag"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/flagutil"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/fs"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/httpserver"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
@ -35,6 +36,7 @@ var (
func main() {
// Write flags and help message to stdout, since it is easier to grep or pipe.
flag.CommandLine.SetOutput(os.Stdout)
flag.Usage = usage
envflag.Parse()
buildinfo.Init()
logger.Init()
@ -115,3 +117,12 @@ func writeAPIHelp(w io.Writer, pathList [][]string) {
fmt.Fprintf(w, "<a href='%s'>%q</a> - %s<br/>", p, p, doc)
}
}
func usage() {
const s = `
victoria-metrics is a time series database and monitoring solution.
See the docs at https://victoriametrics.github.io/
`
flagutil.Usage(s)
}