Merge pull request #11613 from knweiss/gosimple

Code simplification (gosimple)

pkg/cmd/grafana-cli/commands/install_command.go

@@ -33,7 +33,7 @@ func validateInput(c CommandLine, pluginFolder string) error {
 	fileInfo, err := os.Stat(pluginsDir)
 	if err != nil {
 		if err = os.MkdirAll(pluginsDir, os.ModePerm); err != nil {
-			return errors.New(fmt.Sprintf("pluginsDir (%s) is not a writable directory", pluginsDir))
+			return fmt.Errorf("pluginsDir (%s) is not a writable directory", pluginsDir)
 		}
 		return nil
 	}

pkg/cmd/grafana-cli/commands/ls_command.go

@@ -24,7 +24,7 @@ var validateLsCommand = func(pluginDir string) error {
 		return fmt.Errorf("error: %s", err)
 	}
 
-	if pluginDirInfo.IsDir() == false {
+	if !pluginDirInfo.IsDir() {
 		return errors.New("plugin path is not a directory")
 	}
 

pkg/cmd/grafana-cli/commands/upgrade_all_command.go

@@ -53,8 +53,7 @@ func upgradeAllCommand(c CommandLine) error {
 	for _, p := range pluginsToUpgrade {
 		logger.Infof("Updating %v \n", p.Id)
 
-		var err error
-		err = s.RemoveInstalledPlugin(pluginsDir, p.Id)
+		err := s.RemoveInstalledPlugin(pluginsDir, p.Id)
 		if err != nil {
 			return err
 		}