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config: prevent displaying usage twice if --help was requested

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This commit is contained in:
Andras Banki-Horvath 2020-09-08 17:05:16 +02:00
parent 751b02361e
commit b778b25866
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GPG Key ID: 80E5375C094198D8
1 changed files with 11 additions and 9 deletions
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20
cmd/lnd/main.go
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@ -14,8 +14,14 @@ func main() {
// function will also set up logging properly. // function will also set up logging properly.
loadedConfig, err := lnd.LoadConfig() loadedConfig, err := lnd.LoadConfig()
if err != nil { if err != nil {
_, _ = fmt.Fprintln(os.Stderr, err) if e, ok := err.(*flags.Error); !ok || e.Type != flags.ErrHelp {
os.Exit(1) // Print error if not due to help request.
_, _ = fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
// Help was requested, exit normally.
os.Exit(0)
} }
// Hook interceptor for os signals. // Hook interceptor for os signals.
@ -26,14 +32,10 @@ func main() {
// Call the "real" main in a nested manner so the defers will properly // Call the "real" main in a nested manner so the defers will properly
// be executed in the case of a graceful shutdown. // be executed in the case of a graceful shutdown.
err = lnd.Main( if err := lnd.Main(
loadedConfig, lnd.ListenerCfg{}, signal.ShutdownChannel(), loadedConfig, lnd.ListenerCfg{}, signal.ShutdownChannel(),
) ); err != nil {
if err != nil { _, _ = fmt.Fprintln(os.Stderr, err)
if e, ok := err.(*flags.Error); ok && e.Type == flags.ErrHelp {
} else {
_, _ = fmt.Fprintln(os.Stderr, err)
}
os.Exit(1) os.Exit(1)
} }
} }