Some more style fixes

Signed-off-by: Alexandr Morozov <lk4d4math@gmail.com>

engine/table.go

@@ -78,7 +78,7 @@ func (t *Table) WriteListTo(dst io.Writer) (n int64, err error) {
 			if _, err := dst.Write([]byte{','}); err != nil {
 				return -1, err
 			}
-			n += 1
+			n++
 		}
 	}
 	if _, err := dst.Write([]byte{']'}); err != nil {

graph/pull.go

@@ -80,10 +80,9 @@ func (s *TagStore) pullRepository(r *registry.Session, out io.Writer, localName,
 	if err != nil {
 		if strings.Contains(err.Error(), "HTTP code: 404") {
 			return fmt.Errorf("Error: image %s not found", remoteName)
-		} else {
-			// Unexpected HTTP error
-			return err
 		}
+		// Unexpected HTTP error
+		return err
 	}
 
 	log.Debugf("Retrieving the tag list")

graph/push.go

@@ -18,8 +18,8 @@ import (
 func (s *TagStore) getImageList(localRepo map[string]string, requestedTag string) ([]string, map[string][]string, error) {
 	var (
 		imageList   []string
-		imagesSeen  map[string]bool     = make(map[string]bool)
-		tagsByImage map[string][]string = make(map[string][]string)
+		imagesSeen  = make(map[string]bool)
+		tagsByImage = make(map[string][]string)
 	)
 
 	for tag, id := range localRepo {

graph/service.go

@@ -170,12 +170,11 @@ func (s *TagStore) CmdTarLayer(job *engine.Job) engine.Status {
 		}
 		defer fs.Close()
 
-		if written, err := io.Copy(job.Stdout, fs); err != nil {
+		written, err := io.Copy(job.Stdout, fs)
+		if err != nil {
 			return job.Error(err)
-		} else {
-			log.Debugf("rendered layer for %s of [%d] size", image.ID, written)
 		}
-
+		log.Debugf("rendered layer for %s of [%d] size", image.ID, written)
 		return engine.StatusOK
 	}
 	return job.Errorf("No such image: %s", name)

graph/tags.go

@@ -288,42 +288,42 @@ func validateTagName(name string) error {
 	return nil
 }
 
-func (s *TagStore) poolAdd(kind, key string) (chan struct{}, error) {
-	s.Lock()
-	defer s.Unlock()
+func (store *TagStore) poolAdd(kind, key string) (chan struct{}, error) {
+	store.Lock()
+	defer store.Unlock()
 
-	if c, exists := s.pullingPool[key]; exists {
+	if c, exists := store.pullingPool[key]; exists {
 		return c, fmt.Errorf("pull %s is already in progress", key)
 	}
-	if c, exists := s.pushingPool[key]; exists {
+	if c, exists := store.pushingPool[key]; exists {
 		return c, fmt.Errorf("push %s is already in progress", key)
 	}
 
 	c := make(chan struct{})
 	switch kind {
 	case "pull":
-		s.pullingPool[key] = c
+		store.pullingPool[key] = c
 	case "push":
-		s.pushingPool[key] = c
+		store.pushingPool[key] = c
 	default:
 		return nil, fmt.Errorf("Unknown pool type")
 	}
 	return c, nil
 }
 
-func (s *TagStore) poolRemove(kind, key string) error {
-	s.Lock()
-	defer s.Unlock()
+func (store *TagStore) poolRemove(kind, key string) error {
+	store.Lock()
+	defer store.Unlock()
 	switch kind {
 	case "pull":
-		if c, exists := s.pullingPool[key]; exists {
+		if c, exists := store.pullingPool[key]; exists {
 			close(c)
-			delete(s.pullingPool, key)
+			delete(store.pullingPool, key)
 		}
 	case "push":
-		if c, exists := s.pushingPool[key]; exists {
+		if c, exists := store.pushingPool[key]; exists {
 			close(c)
-			delete(s.pushingPool, key)
+			delete(store.pushingPool, key)
 		}
 	default:
 		return fmt.Errorf("Unknown pool type")

utils/utils.go

@@ -653,9 +653,8 @@ func ValidateContextDirectory(srcPath string, excludes []string) error {
 			if err != nil && os.IsPermission(err) {
 				finalError = fmt.Errorf("no permission to read from '%s'", filePath)
 				return err
-			} else {
-				currentFile.Close()
 			}
+			currentFile.Close()
 		}
 		return nil
 	})