debug: display build warnings after each build

Signed-off-by: Justin Chadwell <me@jedevc.com>

commands/bake.go

@@ -17,7 +17,6 @@ import (
 	"github.com/docker/buildx/util/tracing"
 	"github.com/docker/cli/cli/command"
 	"github.com/moby/buildkit/util/appcontext"
-	"github.com/moby/buildkit/util/progress/progressui"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
@@ -118,7 +117,7 @@ func runBake(dockerCli command.Cli, targets []string, in bakeOptions, cFlags com
 	}
 
 	printer, err := progress.NewPrinter(ctx2, os.Stderr, os.Stderr, cFlags.progress,
-		progressui.WithDesc(progressTextDesc, progressConsoleDesc),
+		progress.WithDesc(progressTextDesc, progressConsoleDesc),
 	)
 	if err != nil {
 		return err

commands/build.go

@@ -40,7 +40,6 @@ import (
 	"github.com/moby/buildkit/solver/errdefs"
 	"github.com/moby/buildkit/util/appcontext"
 	"github.com/moby/buildkit/util/grpcerrors"
-	"github.com/moby/buildkit/util/progress/progressui"
 	"github.com/morikuni/aec"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
@@ -225,10 +224,16 @@ func runBuild(dockerCli command.Cli, options buildOptions) (err error) {
 	if err != nil {
 		return err
 	}
-	printer, err := progress.NewPrinter(ctx2, os.Stderr, os.Stderr, progressMode, progressui.WithDesc(
-		fmt.Sprintf("building with %q instance using %s driver", b.Name, b.Driver),
-		fmt.Sprintf("%s:%s", b.Driver, b.Name),
-	))
+	var printer *progress.Printer
+	printer, err = progress.NewPrinter(ctx2, os.Stderr, os.Stderr, progressMode,
+		progress.WithDesc(
+			fmt.Sprintf("building with %q instance using %s driver", b.Name, b.Driver),
+			fmt.Sprintf("%s:%s", b.Driver, b.Name),
+		),
+		progress.WithOnClose(func() {
+			printWarnings(os.Stderr, printer.Warnings(), progressMode)
+		}),
+	)
 	if err != nil {
 		return err
 	}
@@ -244,7 +249,6 @@ func runBuild(dockerCli command.Cli, options buildOptions) (err error) {
 	if err := printer.Wait(); retErr == nil {
 		retErr = err
 	}
-	printWarnings(os.Stderr, printer.Warnings(), progressMode)
 	if retErr != nil {
 		return retErr
 	}

util/progress/printer.go

@@ -84,7 +84,12 @@ func (p *Printer) ClearLogSource(v interface{}) {
 	}
 }
 
-func NewPrinter(ctx context.Context, w io.Writer, out console.File, mode string, solveStatusOpt ...progressui.DisplaySolveStatusOpt) (*Printer, error) {
+func NewPrinter(ctx context.Context, w io.Writer, out console.File, mode string, opts ...PrinterOpt) (*Printer, error) {
+	opt := &printerOpts{}
+	for _, o := range opts {
+		o(opt)
+	}
+
 	if v := os.Getenv("BUILDKIT_PROGRESS"); v != "" && mode == PrinterModeAuto {
 		mode = v
 	}
@@ -119,10 +124,13 @@ func NewPrinter(ctx context.Context, w io.Writer, out console.File, mode string,
 
 			resumeLogs := logutil.Pause(logrus.StandardLogger())
 			// not using shared context to not disrupt display but let is finish reporting errors
-			pw.warnings, pw.err = progressui.DisplaySolveStatus(ctx, c, w, pw.status, solveStatusOpt...)
+			pw.warnings, pw.err = progressui.DisplaySolveStatus(ctx, c, w, pw.status, opt.displayOpts...)
 			resumeLogs()
 			close(pw.done)
 
+			if opt.onclose != nil {
+				opt.onclose()
+			}
 			if pw.paused == nil {
 				break
 			}
@@ -135,3 +143,29 @@ func NewPrinter(ctx context.Context, w io.Writer, out console.File, mode string,
 	<-pw.ready
 	return pw, nil
 }
+
+type printerOpts struct {
+	displayOpts []progressui.DisplaySolveStatusOpt
+
+	onclose func()
+}
+
+type PrinterOpt func(b *printerOpts)
+
+func WithPhase(phase string) PrinterOpt {
+	return func(opt *printerOpts) {
+		opt.displayOpts = append(opt.displayOpts, progressui.WithPhase(phase))
+	}
+}
+
+func WithDesc(text string, console string) PrinterOpt {
+	return func(opt *printerOpts) {
+		opt.displayOpts = append(opt.displayOpts, progressui.WithDesc(text, console))
+	}
+}
+
+func WithOnClose(onclose func()) PrinterOpt {
+	return func(opt *printerOpts) {
+		opt.onclose = onclose
+	}
+}