Add quiet flag

2 files changed, 14 insertions, 4 deletions

diff --git a/client/go/cmd/config_test.go b/client/go/cmd/config_test.go
index 7f7bdbb3edd..0e74e53c5e5 100644
--- a/client/go/cmd/config_test.go
+++ b/client/go/cmd/config_test.go
@@ -24,7 +24,7 @@ func TestConfig(t *testing.T) {
 	assertConfigCommand(t, "", homeDir, "config", "set", "application", "t1.a1.i1")
 	assertConfigCommand(t, "application = t1.a1.i1\n", homeDir, "config", "get", "application")
 
-	assertConfigCommand(t, "application = t1.a1.i1\ncolor = auto\ntarget = https://127.0.0.1\nwait = 0\n", homeDir, "config", "get")
+	assertConfigCommand(t, "application = t1.a1.i1\ncolor = auto\nquiet = false\ntarget = https://127.0.0.1\nwait = 0\n", homeDir, "config", "get")
 
 	assertConfigCommand(t, "", homeDir, "config", "set", "wait", "60")
 	assertConfigCommandErr(t, "wait option must be an integer >= 0, got \"foo\"\n", homeDir, "config", "set", "wait", "foo")
diff --git a/client/go/cmd/root.go b/client/go/cmd/root.go
index cd8427c3ac6..7fe704e4918 100644
--- a/client/go/cmd/root.go
+++ b/client/go/cmd/root.go
@@ -6,6 +6,7 @@ package cmd
 
 import (
 	"fmt"
+	"io/ioutil"
 	"log"
 	"os"
 
@@ -36,6 +37,7 @@ Vespa documentation: https://docs.vespa.ai`,
 	applicationArg string
 	waitSecsArg    int
 	colorArg       string
+	quietArg       bool
 
 	color  = aurora.NewAurora(false)
 	stdout = colorable.NewColorableStdout()
@@ -47,17 +49,23 @@ const (
 	targetFlag      = "target"
 	waitFlag        = "wait"
 	colorFlag       = "color"
+	quietFlag       = "quiet"
 )
 
 func isTerminal() bool {
-	file, ok := stdout.(*os.File)
-	if ok {
-		return isatty.IsTerminal(file.Fd())
+	if f, ok := stdout.(*os.File); ok {
+		return isatty.IsTerminal(f.Fd())
+	}
+	if f, ok := stderr.(*os.File); ok {
+		return isatty.IsTerminal(f.Fd())
 	}
 	return false
 }
 
 func configureOutput() {
+	if quietArg {
+		stdout = ioutil.Discard
+	}
 	log.SetFlags(0) // No timestamps
 	log.SetOutput(stdout)
 
@@ -88,10 +96,12 @@ func init() {
 	rootCmd.PersistentFlags().StringVarP(&applicationArg, applicationFlag, "a", "", "The application to manage")
 	rootCmd.PersistentFlags().IntVarP(&waitSecsArg, waitFlag, "w", 0, "Number of seconds to wait for a service to become ready")
 	rootCmd.PersistentFlags().StringVarP(&colorArg, colorFlag, "c", "auto", "Whether to use colors in output. Can be \"auto\", \"never\" or \"always\"")
+	rootCmd.PersistentFlags().BoolVarP(&quietArg, quietFlag, "q", false, "Quiet mode. Only errors are printed.")
 	bindFlagToConfig(targetFlag, rootCmd)
 	bindFlagToConfig(applicationFlag, rootCmd)
 	bindFlagToConfig(waitFlag, rootCmd)
 	bindFlagToConfig(colorFlag, rootCmd)
+	bindFlagToConfig(quietFlag, rootCmd)
 }
 
 // Execute executes the root command.