Add ability to disable logging output

cli/setup.go

@@ -258,6 +258,7 @@ func setup() {
 	if opts.Logging.Output != "" {
 
 		chk := map[string]bool{
+			"none":   true,
 			"stdout": true,
 			"stderr": true,
 		}

cli/start.go

@@ -31,7 +31,9 @@ var startCmd = &cobra.Command{
 	Short: "Start the database and http server",
 	PreRun: func(cmd *cobra.Command, args []string) {
 
-		fmt.Print(logo)
+		if opts.Logging.Output != "none" {
+			fmt.Print(logo)
+		}
 
 	},
 	RunE: func(cmd *cobra.Command, args []string) (err error) {

log/log.go

@@ -18,6 +18,8 @@ import (
 	"os"
 	"time"
 
+	"io/ioutil"
+
 	"github.com/sirupsen/logrus"
 )
 
@@ -230,6 +232,8 @@ func (l *Logger) SetFormat(v string) {
 // SetOutput sets the logging output of the logger instance.
 func (l *Logger) SetOutput(v string) {
 	switch v {
+	case "none":
+		l.Out = ioutil.Discard
 	case "stdout":
 		l.Out = os.Stdout
 	case "stderr":