Refactor pkg/stremformatter with custom constructors instead of passing a boolean

Signed-off-by: Antonio Murdaca <me@runcom.ninja>

api/client/build.go

@@ -199,7 +199,7 @@ func (cli *DockerCli) CmdBuild(args ...string) error {
 	// Setup an upload progress bar
 	// FIXME: ProgressReader shouldn't be this annoying to use
 	if context != nil {
-		sf := streamformatter.NewStreamFormatter(false)
+		sf := streamformatter.NewStreamFormatter()
 		body = progressreader.New(progressreader.Config{
 			In:        context,
 			Out:       cli.out,

api/server/server.go

@@ -730,7 +730,7 @@ func (s *Server) postImagesCreate(version version.Version, w http.ResponseWriter
 		if !output.Flushed() {
 			return err
 		}
-		sf := streamformatter.NewStreamFormatter(true)
+		sf := streamformatter.NewJSONStreamFormatter()
 		output.Write(sf.FormatError(err))
 	}
 
@@ -814,7 +814,7 @@ func (s *Server) postImagesPush(version version.Version, w http.ResponseWriter,
 		if !output.Flushed() {
 			return err
 		}
-		sf := streamformatter.NewStreamFormatter(true)
+		sf := streamformatter.NewJSONStreamFormatter()
 		output.Write(sf.FormatError(err))
 	}
 	return nil
@@ -843,7 +843,7 @@ func (s *Server) getImagesGet(version version.Version, w http.ResponseWriter, r
 		if !output.Flushed() {
 			return err
 		}
-		sf := streamformatter.NewStreamFormatter(true)
+		sf := streamformatter.NewJSONStreamFormatter()
 		output.Write(sf.FormatError(err))
 	}
 	return nil
@@ -1234,7 +1234,7 @@ func (s *Server) postBuild(version version.Version, w http.ResponseWriter, r *ht
 		if !output.Flushed() {
 			return err
 		}
-		sf := streamformatter.NewStreamFormatter(true)
+		sf := streamformatter.NewJSONStreamFormatter()
 		w.Write(sf.FormatError(err))
 	}
 	return nil

builder/job.go

@@ -141,7 +141,7 @@ func Build(d *daemon.Daemon, buildConfig *Config) error {
 	}
 	defer context.Close()
 
-	sf := streamformatter.NewStreamFormatter(true)
+	sf := streamformatter.NewJSONStreamFormatter()
 
 	builder := &Builder{
 		Daemon: d,

graph/import.go

@@ -22,7 +22,7 @@ type ImageImportConfig struct {
 
 func (s *TagStore) Import(src string, repo string, tag string, imageImportConfig *ImageImportConfig) error {
 	var (
-		sf      = streamformatter.NewStreamFormatter(true)
+		sf      = streamformatter.NewJSONStreamFormatter()
 		archive archive.ArchiveReader
 		resp    *http.Response
 	)

graph/pull.go

@@ -29,7 +29,7 @@ type ImagePullConfig struct {
 
 func (s *TagStore) Pull(image string, tag string, imagePullConfig *ImagePullConfig) error {
 	var (
-		sf = streamformatter.NewStreamFormatter(true)
+		sf = streamformatter.NewJSONStreamFormatter()
 	)
 
 	// Resolve the Repository name from fqn to RepositoryInfo

graph/push.go

@@ -495,7 +495,7 @@ func (s *TagStore) pushV2Image(r *registry.Session, img *image.Image, endpoint *
 // FIXME: Allow to interrupt current push when new push of same image is done.
 func (s *TagStore) Push(localName string, imagePushConfig *ImagePushConfig) error {
 	var (
-		sf = streamformatter.NewStreamFormatter(true)
+		sf = streamformatter.NewJSONStreamFormatter()
 	)
 
 	// Resolve the Repository name from fqn to RepositoryInfo

pkg/streamformatter/streamformatter.go

@@ -12,8 +12,14 @@ type StreamFormatter struct {
 	json bool
 }
 
-func NewStreamFormatter(json bool) *StreamFormatter {
-	return &StreamFormatter{json}
+// NewStreamFormatter returns a simple StreamFormatter
+func NewStreamFormatter() *StreamFormatter {
+	return &StreamFormatter{}
+}
+
+// NewJSONStreamFormatter returns a StreamFormatter configured to stream json
+func NewJSONStreamFormatter() *StreamFormatter {
+	return &StreamFormatter{true}
 }
 
 const streamNewline = "\r\n"
@@ -62,7 +68,6 @@ func (sf *StreamFormatter) FormatProgress(id, action string, progress *jsonmessa
 		progress = &jsonmessage.JSONProgress{}
 	}
 	if sf.json {
-
 		b, err := json.Marshal(&jsonmessage.JSONMessage{
 			Status:          action,
 			ProgressMessage: progress.String(),
@@ -81,10 +86,6 @@ func (sf *StreamFormatter) FormatProgress(id, action string, progress *jsonmessa
 	return []byte(action + " " + progress.String() + endl)
 }
 
-func (sf *StreamFormatter) Json() bool {
-	return sf.json
-}
-
 type StdoutFormater struct {
 	io.Writer
 	*StreamFormatter

pkg/streamformatter/streamformatter_test.go

@@ -10,31 +10,55 @@ import (
 )
 
 func TestFormatStream(t *testing.T) {
-	sf := NewStreamFormatter(true)
+	sf := NewStreamFormatter()
+	res := sf.FormatStream("stream")
+	if string(res) != "stream"+"\r" {
+		t.Fatalf("%q", res)
+	}
+}
+
+func TestFormatJSONStatus(t *testing.T) {
+	sf := NewStreamFormatter()
+	res := sf.FormatStatus("ID", "%s%d", "a", 1)
+	if string(res) != "a1\r\n" {
+		t.Fatalf("%q", res)
+	}
+}
+
+func TestFormatSimpleError(t *testing.T) {
+	sf := NewStreamFormatter()
+	res := sf.FormatError(errors.New("Error for formatter"))
+	if string(res) != "Error: Error for formatter\r\n" {
+		t.Fatalf("%q", res)
+	}
+}
+
+func TestJSONFormatStream(t *testing.T) {
+	sf := NewJSONStreamFormatter()
 	res := sf.FormatStream("stream")
 	if string(res) != `{"stream":"stream"}`+"\r\n" {
 		t.Fatalf("%q", res)
 	}
 }
 
-func TestFormatStatus(t *testing.T) {
-	sf := NewStreamFormatter(true)
+func TestJSONFormatStatus(t *testing.T) {
+	sf := NewJSONStreamFormatter()
 	res := sf.FormatStatus("ID", "%s%d", "a", 1)
 	if string(res) != `{"status":"a1","id":"ID"}`+"\r\n" {
 		t.Fatalf("%q", res)
 	}
 }
 
-func TestFormatSimpleError(t *testing.T) {
-	sf := NewStreamFormatter(true)
+func TestJSONFormatSimpleError(t *testing.T) {
+	sf := NewJSONStreamFormatter()
 	res := sf.FormatError(errors.New("Error for formatter"))
 	if string(res) != `{"errorDetail":{"message":"Error for formatter"},"error":"Error for formatter"}`+"\r\n" {
 		t.Fatalf("%q", res)
 	}
 }
 
-func TestFormatJSONError(t *testing.T) {
-	sf := NewStreamFormatter(true)
+func TestJSONFormatJSONError(t *testing.T) {
+	sf := NewJSONStreamFormatter()
 	err := &jsonmessage.JSONError{Code: 50, Message: "Json error"}
 	res := sf.FormatError(err)
 	if string(res) != `{"errorDetail":{"code":50,"message":"Json error"},"error":"Json error"}`+"\r\n" {
@@ -42,8 +66,8 @@ func TestFormatJSONError(t *testing.T) {
 	}
 }
 
-func TestFormatProgress(t *testing.T) {
-	sf := NewStreamFormatter(true)
+func TestJSONFormatProgress(t *testing.T) {
+	sf := NewJSONStreamFormatter()
 	progress := &jsonmessage.JSONProgress{
 		Current: 15,
 		Total:   30,