Switch UI to bubbletea

.github/actions/bootstrap/action.yaml

@@ -4,7 +4,7 @@ inputs:
   go-version:
     description: "Go version to install"
     required: true
-    default: "1.19.x"
+    default: "1.20.x"
   use-go-cache:
     description: "Restore go cache"
     required: true

.gitignore

@@ -1,5 +1,6 @@
 go.work
 go.work.sum
+/bin
 /.bin
 CHANGELOG.md
 VERSION

cmd/syft/cli/attest.go

@@ -43,6 +43,7 @@ func Attest(v *viper.Viper, app *config.Application, ro *options.RootOptions, po
 		RunE: func(cmd *cobra.Command, args []string) error {
 			if app.CheckForAppUpdate {
 				checkForApplicationUpdate()
+				// TODO: this is broke, the bus isn't available yet
 			}
 
 			return attest.Run(cmd.Context(), app, args)

cmd/syft/cli/attest/attest.go

@@ -16,11 +16,11 @@ import (
 	"github.com/anchore/syft/cmd/syft/cli/eventloop"
 	"github.com/anchore/syft/cmd/syft/cli/options"
 	"github.com/anchore/syft/cmd/syft/cli/packages"
+	"github.com/anchore/syft/cmd/syft/internal/ui"
 	"github.com/anchore/syft/internal/bus"
 	"github.com/anchore/syft/internal/config"
 	"github.com/anchore/syft/internal/file"
 	"github.com/anchore/syft/internal/log"
-	"github.com/anchore/syft/internal/ui"
 	"github.com/anchore/syft/syft"
 	"github.com/anchore/syft/syft/event"
 	"github.com/anchore/syft/syft/event/monitor"
@@ -39,6 +39,13 @@ func Run(_ context.Context, app *config.Application, args []string) error {
 	// note: must be a container image
 	userInput := args[0]
 
+	_, err = exec.LookPath("cosign")
+	if err != nil {
+		// when cosign is not installed the error will be rendered like so:
+		// 2023/06/30 08:31:52 error during command execution: 'syft attest' requires cosign to be installed: exec: "cosign": executable file not found in $PATH
+		return fmt.Errorf("'syft attest' requires cosign to be installed: %w", err)
+	}
+
 	eventBus := partybus.NewBus()
 	stereoscope.SetBus(eventBus)
 	syft.SetBus(eventBus)
@@ -119,7 +126,7 @@ func execWorker(app *config.Application, userInput string) <-chan error {
 	errs := make(chan error)
 	go func() {
 		defer close(errs)
-		defer bus.Publish(partybus.Event{Type: event.Exit})
+		defer bus.Exit()
 
 		s, err := buildSBOM(app, userInput, errs)
 		if err != nil {
@@ -207,8 +214,8 @@ func execWorker(app *config.Application, userInput string) <-chan error {
 					Context: "cosign",
 				},
 				Value: &monitor.ShellProgress{
-					Reader: r,
-					Manual: mon,
+					Reader:       r,
+					Progressable: mon,
 				},
 			},
 		)

cmd/syft/cli/commands.go

@@ -125,7 +125,7 @@ func checkForApplicationUpdate() {
 		log.Infof("new version of %s is available: %s (current version is %s)", internal.ApplicationName, newVersion, version.FromBuild().Version)
 
 		bus.Publish(partybus.Event{
-			Type:  event.AppUpdateAvailable,
+			Type:  event.CLIAppUpdateAvailable,
 			Value: newVersion,
 		})
 	} else {

cmd/syft/cli/convert.go

@@ -43,6 +43,7 @@ func Convert(v *viper.Viper, app *config.Application, ro *options.RootOptions, p
 		RunE: func(cmd *cobra.Command, args []string) error {
 			if app.CheckForAppUpdate {
 				checkForApplicationUpdate()
+				// TODO: this is broke, the bus isn't available yet
 			}
 			return convert.Run(cmd.Context(), app, args)
 		},

cmd/syft/cli/convert/convert.go

@@ -6,20 +6,29 @@ import (
 	"io"
 	"os"
 
+	"github.com/wagoodman/go-partybus"
+
+	"github.com/anchore/stereoscope"
+	"github.com/anchore/syft/cmd/syft/cli/eventloop"
 	"github.com/anchore/syft/cmd/syft/cli/options"
+	"github.com/anchore/syft/cmd/syft/internal/ui"
+	"github.com/anchore/syft/internal/bus"
 	"github.com/anchore/syft/internal/config"
 	"github.com/anchore/syft/internal/log"
+	"github.com/anchore/syft/syft"
 	"github.com/anchore/syft/syft/formats"
+	"github.com/anchore/syft/syft/sbom"
 )
 
 func Run(_ context.Context, app *config.Application, args []string) error {
 	log.Warn("convert is an experimental feature, run `syft convert -h` for help")
+
 	writer, err := options.MakeSBOMWriter(app.Outputs, app.File, app.OutputTemplatePath)
 	if err != nil {
 		return err
 	}
 
-	// this can only be a SBOM file
+	// could be an image or a directory, with or without a scheme
 	userInput := args[0]
 
 	var reader io.ReadCloser
@@ -37,10 +46,40 @@ func Run(_ context.Context, app *config.Application, args []string) error {
 		reader = f
 	}
 
-	sbom, _, err := formats.Decode(reader)
-	if err != nil {
-		return fmt.Errorf("failed to decode SBOM: %w", err)
-	}
+	eventBus := partybus.NewBus()
+	stereoscope.SetBus(eventBus)
+	syft.SetBus(eventBus)
+	subscription := eventBus.Subscribe()
+
+	return eventloop.EventLoop(
+		execWorker(reader, writer),
+		eventloop.SetupSignals(),
+		subscription,
+		stereoscope.Cleanup,
+		ui.Select(options.IsVerbose(app), app.Quiet)...,
+	)
+}
+
+func execWorker(reader io.Reader, writer sbom.Writer) <-chan error {
+	errs := make(chan error)
+	go func() {
+		defer close(errs)
+		defer bus.Exit()
 
-	return writer.Write(*sbom)
+		s, _, err := formats.Decode(reader)
+		if err != nil {
+			errs <- fmt.Errorf("failed to decode SBOM: %w", err)
+			return
+		}
+
+		if s == nil {
+			errs <- fmt.Errorf("no SBOM produced")
+			return
+		}
+
+		if err := writer.Write(*s); err != nil {
+			errs <- fmt.Errorf("failed to write SBOM: %w", err)
+		}
+	}()
+	return errs
 }

cmd/syft/cli/eventloop/event_loop.go

@@ -8,20 +8,20 @@ import (
 	"github.com/hashicorp/go-multierror"
 	"github.com/wagoodman/go-partybus"
 
+	"github.com/anchore/clio"
 	"github.com/anchore/syft/internal/log"
-	"github.com/anchore/syft/internal/ui"
 )
 
-// eventLoop listens to worker errors (from execution path), worker events (from a partybus subscription), and
+// EventLoop listens to worker errors (from execution path), worker events (from a partybus subscription), and
 // signal interrupts. Is responsible for handling each event relative to a given UI an to coordinate eventing until
 // an eventual graceful exit.
-func EventLoop(workerErrs <-chan error, signals <-chan os.Signal, subscription *partybus.Subscription, cleanupFn func(), uxs ...ui.UI) error {
+func EventLoop(workerErrs <-chan error, signals <-chan os.Signal, subscription *partybus.Subscription, cleanupFn func(), uxs ...clio.UI) error {
 	defer cleanupFn()
 	events := subscription.Events()
 	var err error
-	var ux ui.UI
+	var ux clio.UI
 
-	if ux, err = setupUI(subscription.Unsubscribe, uxs...); err != nil {
+	if ux, err = setupUI(subscription, uxs...); err != nil {
 		return err
 	}
 
@@ -85,9 +85,9 @@ func EventLoop(workerErrs <-chan error, signals <-chan os.Signal, subscription *
 // during teardown. With the given UIs, the first UI which the ui.Setup() function does not return an error
 // will be utilized in execution. Providing a set of UIs allows for the caller to provide graceful fallbacks
 // when there are environmental problem (e.g. unable to setup a TUI with the current TTY).
-func setupUI(unsubscribe func() error, uis ...ui.UI) (ui.UI, error) {
+func setupUI(subscription *partybus.Subscription, uis ...clio.UI) (clio.UI, error) {
 	for _, ux := range uis {
-		if err := ux.Setup(unsubscribe); err != nil {
+		if err := ux.Setup(subscription); err != nil {
 			log.Warnf("unable to setup given UI, falling back to alternative UI: %+v", err)
 			continue
 		}

cmd/syft/cli/eventloop/event_loop_test.go

@@ -11,34 +11,37 @@ import (
 	"github.com/stretchr/testify/mock"
 	"github.com/wagoodman/go-partybus"
 
-	"github.com/anchore/syft/internal/ui"
+	"github.com/anchore/clio"
 	"github.com/anchore/syft/syft/event"
 )
 
-var _ ui.UI = (*uiMock)(nil)
+var _ clio.UI = (*uiMock)(nil)
 
 type uiMock struct {
-	t           *testing.T
-	finalEvent  partybus.Event
-	unsubscribe func() error
+	t            *testing.T
+	finalEvent   partybus.Event
+	subscription partybus.Unsubscribable
 	mock.Mock
 }
 
-func (u *uiMock) Setup(unsubscribe func() error) error {
+func (u *uiMock) Setup(unsubscribe partybus.Unsubscribable) error {
+	u.t.Helper()
 	u.t.Logf("UI Setup called")
-	u.unsubscribe = unsubscribe
-	return u.Called(unsubscribe).Error(0)
+	u.subscription = unsubscribe
+	return u.Called(unsubscribe.Unsubscribe).Error(0)
 }
 
 func (u *uiMock) Handle(event partybus.Event) error {
+	u.t.Helper()
 	u.t.Logf("UI Handle called: %+v", event.Type)
 	if event == u.finalEvent {
-		assert.NoError(u.t, u.unsubscribe())
+		assert.NoError(u.t, u.subscription.Unsubscribe())
 	}
 	return u.Called(event).Error(0)
 }
 
 func (u *uiMock) Teardown(_ bool) error {
+	u.t.Helper()
 	u.t.Logf("UI Teardown called")
 	return u.Called().Error(0)
 }
@@ -51,7 +54,7 @@ func Test_EventLoop_gracefulExit(t *testing.T) {
 		t.Cleanup(testBus.Close)
 
 		finalEvent := partybus.Event{
-			Type: event.Exit,
+			Type: event.CLIExit,
 		}
 
 		worker := func() <-chan error {
@@ -183,7 +186,7 @@ func Test_EventLoop_unsubscribeError(t *testing.T) {
 		t.Cleanup(testBus.Close)
 
 		finalEvent := partybus.Event{
-			Type: event.Exit,
+			Type: event.CLIExit,
 		}
 
 		worker := func() <-chan error {
@@ -252,7 +255,7 @@ func Test_EventLoop_handlerError(t *testing.T) {
 		t.Cleanup(testBus.Close)
 
 		finalEvent := partybus.Event{
-			Type:  event.Exit,
+			Type:  event.CLIExit,
 			Error: fmt.Errorf("an exit error occured"),
 		}
 
@@ -377,7 +380,7 @@ func Test_EventLoop_uiTeardownError(t *testing.T) {
 		t.Cleanup(testBus.Close)
 
 		finalEvent := partybus.Event{
-			Type: event.Exit,
+			Type: event.CLIExit,
 		}
 
 		worker := func() <-chan error {

cmd/syft/cli/options/writer.go

@@ -1,6 +1,7 @@
 package options
 
 import (
+	"bytes"
 	"fmt"
 	"io"
 	"os"
@@ -10,6 +11,7 @@ import (
 	"github.com/hashicorp/go-multierror"
 	"github.com/mitchellh/go-homedir"
 
+	"github.com/anchore/syft/internal/bus"
 	"github.com/anchore/syft/internal/log"
 	"github.com/anchore/syft/syft/formats"
 	"github.com/anchore/syft/syft/formats/table"
@@ -114,14 +116,6 @@ type sbomMultiWriter struct {
 	writers []sbom.Writer
 }
 
-type nopWriteCloser struct {
-	io.Writer
-}
-
-func (n nopWriteCloser) Close() error {
-	return nil
-}
-
 // newSBOMMultiWriter create all report writers from input options; if a file is not specified the given defaultWriter is used
 func newSBOMMultiWriter(options ...sbomWriterDescription) (_ *sbomMultiWriter, err error) {
 	if len(options) == 0 {
@@ -133,9 +127,8 @@ func newSBOMMultiWriter(options ...sbomWriterDescription) (_ *sbomMultiWriter, e
 	for _, option := range options {
 		switch len(option.Path) {
 		case 0:
-			out.writers = append(out.writers, &sbomStreamWriter{
+			out.writers = append(out.writers, &sbomPublisher{
 				format: option.Format,
-				out:    nopWriteCloser{Writer: os.Stdout},
 			})
 		default:
 			// create any missing subdirectories
@@ -195,3 +188,19 @@ func (w *sbomStreamWriter) Close() error {
 	}
 	return nil
 }
+
+// sbomPublisher implements sbom.Writer that publishes results to the event bus
+type sbomPublisher struct {
+	format sbom.Format
+}
+
+// Write the provided SBOM to the data stream
+func (w *sbomPublisher) Write(s sbom.SBOM) error {
+	buf := &bytes.Buffer{}
+	if err := w.format.Encode(buf, s); err != nil {
+		return fmt.Errorf("unable to encode SBOM: %w", err)
+	}
+
+	bus.Report(buf.String())
+	return nil
+}

cmd/syft/cli/options/writer_test.go

@@ -191,6 +191,8 @@ func Test_newSBOMMultiWriter(t *testing.T) {
 					if e.file != "" {
 						assert.FileExists(t, tmp+e.file)
 					}
+				case *sbomPublisher:
+					assert.Equal(t, string(w.format.ID()), e.format)
 				default:
 					t.Fatalf("unknown writer type: %T", w)
 				}

cmd/syft/cli/packages.go

@@ -70,6 +70,7 @@ func Packages(v *viper.Viper, app *config.Application, ro *options.RootOptions,
 		SilenceErrors: true,
 		RunE: func(cmd *cobra.Command, args []string) error {
 			if app.CheckForAppUpdate {
+				// TODO: this is broke, the bus isn't available yet
 				checkForApplicationUpdate()
 			}
 			return packages.Run(cmd.Context(), app, args)