Disable ETUI for piped input (anchore#571)

* fixed piped input

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* allow pipedinput helper to raise an error

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* factor out verbosity check to function

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

cmd/packages.go

@@ -217,10 +217,21 @@ func packagesExec(_ *cobra.Command, args []string) error {
 		setupSignals(),
 		eventSubscription,
 		stereoscope.Cleanup,
-		ui.Select(appConfig.CliOptions.Verbosity > 0, appConfig.Quiet, reporter)...,
+		ui.Select(isVerbose(), appConfig.Quiet, reporter)...,
 	)
 }
 
+func isVerbose() (result bool) {
+	isPipedInput, err := internal.IsPipedInput()
+	if err != nil {
+		// since we can't tell if there was piped input we assume that there could be to disable the ETUI
+		log.Warnf("unable to determine if there is piped input: %+v", err)
+		return true
+	}
+	// verbosity should consider if there is piped input (in which case we should not show the ETUI)
+	return appConfig.CliOptions.Verbosity > 0 || isPipedInput
+}
+
 func packagesExecWorker(userInput string) <-chan error {
 	errs := make(chan error)
 	go func() {

cmd/power_user.go

@@ -83,7 +83,7 @@ func powerUserExec(_ *cobra.Command, args []string) error {
 		setupSignals(),
 		eventSubscription,
 		stereoscope.Cleanup,
-		ui.Select(appConfig.CliOptions.Verbosity > 0, appConfig.Quiet, reporter)...,
+		ui.Select(isVerbose(), appConfig.Quiet, reporter)...,
 	)
 }
 

internal/config/application.go

@@ -124,35 +124,38 @@ func (cfg *Application) parseUploadOptions() error {
 }
 
 func (cfg *Application) parseLogLevelOption() error {
-	if cfg.Quiet {
+	switch {
+	case cfg.Quiet:
 		// TODO: this is bad: quiet option trumps all other logging options (such as to a file on disk)
 		// we should be able to quiet the console logging and leave file logging alone...
 		// ... this will be an enhancement for later
 		cfg.Log.LevelOpt = logrus.PanicLevel
-	} else {
-		if cfg.Log.Level != "" {
-			if cfg.CliOptions.Verbosity > 0 {
-				return fmt.Errorf("cannot explicitly set log level (cfg file or env var) and use -v flag together")
-			}
+	case cfg.Log.Level != "":
+		if cfg.CliOptions.Verbosity > 0 {
+			return fmt.Errorf("cannot explicitly set log level (cfg file or env var) and use -v flag together")
+		}
 
-			lvl, err := logrus.ParseLevel(strings.ToLower(cfg.Log.Level))
-			if err != nil {
-				return fmt.Errorf("bad log level configured (%q): %w", cfg.Log.Level, err)
-			}
-			// set the log level explicitly
-			cfg.Log.LevelOpt = lvl
-		} else {
-			// set the log level implicitly
-			switch v := cfg.CliOptions.Verbosity; {
-			case v == 1:
-				cfg.Log.LevelOpt = logrus.InfoLevel
-			case v >= 2:
-				cfg.Log.LevelOpt = logrus.DebugLevel
-			default:
-				cfg.Log.LevelOpt = logrus.ErrorLevel
-			}
+		lvl, err := logrus.ParseLevel(strings.ToLower(cfg.Log.Level))
+		if err != nil {
+			return fmt.Errorf("bad log level configured (%q): %w", cfg.Log.Level, err)
+		}
+
+		cfg.Log.LevelOpt = lvl
+		if cfg.Log.LevelOpt >= logrus.InfoLevel {
+			cfg.CliOptions.Verbosity = 1
+		}
+	default:
+
+		switch v := cfg.CliOptions.Verbosity; {
+		case v == 1:
+			cfg.Log.LevelOpt = logrus.InfoLevel
+		case v >= 2:
+			cfg.Log.LevelOpt = logrus.DebugLevel
+		default:
+			cfg.Log.LevelOpt = logrus.ErrorLevel
 		}
 	}
+
 	return nil
 }
 

internal/input.go

@@ -0,0 +1,16 @@
+package internal
+
+import (
+	"fmt"
+	"os"
+)
+
+// IsPipedInput returns true if there is no input device, which means the user **may** be providing input via a pipe.
+func IsPipedInput() (bool, error) {
+	fi, err := os.Stdin.Stat()
+	if err != nil {
+		return false, fmt.Errorf("unable to determine if there is piped input: %w", err)
+	}
+
+	return fi.Mode()&os.ModeCharDevice == 0, nil
+}