Mqtt: set will only when running as service (evcc-io#16812)

cmd/root.go

@@ -43,6 +43,8 @@ var (
 	ignoreMqtt  = []string{"log", "auth", "releaseNotes"} // excessive size may crash certain brokers
 
 	viper *vpr.Viper
+
+	runAsService bool
 )
 
 // rootCmd represents the base command when called without any subcommands
@@ -111,6 +113,8 @@ func Execute() {
 }
 
 func runRoot(cmd *cobra.Command, args []string) {
+	runAsService = true
+
 	// load config and re-configure logging after reading config file
 	var err error
 	if cfgErr := loadConfigFile(&conf, !cmd.Flag(flagIgnoreDatabase).Changed); errors.As(cfgErr, &vpr.ConfigFileNotFoundError{}) {

cmd/setup.go

@@ -465,9 +465,7 @@ func configureEnvironment(cmd *cobra.Command, conf *globalconfig.All) (err error
 	}
 
 	// setup persistence
-	if err == nil {
-		err = wrapErrorWithClass(ClassDatabase, configureDatabase(conf.Database))
-	}
+	err = wrapErrorWithClass(ClassDatabase, configureDatabase(conf.Database))
 
 	// setup translations
 	if err == nil {
@@ -605,6 +603,10 @@ func configureMqtt(conf *globalconfig.Mqtt) error {
 	log := util.NewLogger("mqtt")
 
 	instance, err := mqtt.RegisteredClient(log, conf.Broker, conf.User, conf.Password, conf.ClientID, 1, conf.Insecure, conf.CaCert, conf.ClientCert, conf.ClientKey, func(options *paho.ClientOptions) {
+		if !runAsService {
+			return
+		}
+
 		topic := fmt.Sprintf("%s/status", strings.Trim(conf.Topic, "/"))
 		options.SetWill(topic, "offline", 1, true)