Merge pull request #2527 from erictune/cleanup2

Remove unused return value.  Make stuff private.

pkg/kubelet/config/etcd.go

@@ -37,30 +37,29 @@ func EtcdKeyForHost(hostname string) string {
 	return path.Join("/", "registry", "nodes", hostname, "boundpods")
 }
 
-type SourceEtcd struct {
+type sourceEtcd struct {
 	key     string
 	helper  tools.EtcdHelper
 	updates chan<- interface{}
 }
 
 // NewSourceEtcd creates a config source that watches and pulls from a key in etcd
-func NewSourceEtcd(key string, client tools.EtcdClient, updates chan<- interface{}) *SourceEtcd {
+func NewSourceEtcd(key string, client tools.EtcdClient, updates chan<- interface{}) {
 	helper := tools.EtcdHelper{
 		client,
 		latest.Codec,
 		tools.RuntimeVersionAdapter{latest.ResourceVersioner},
 	}
-	source := &SourceEtcd{
+	source := &sourceEtcd{
 		key:     key,
 		helper:  helper,
 		updates: updates,
 	}
 	glog.V(1).Infof("Watching etcd for %s", key)
 	go util.Forever(source.run, time.Second)
-	return source
 }
 
-func (s *SourceEtcd) run() {
+func (s *sourceEtcd) run() {
 	watching := s.helper.Watch(s.key, 0)
 	for {
 		select {

pkg/kubelet/config/file.go

@@ -37,28 +37,27 @@ import (
 	"gopkg.in/v1/yaml"
 )
 
-type SourceFile struct {
+type sourceFile struct {
 	path    string
 	updates chan<- interface{}
 }
 
-func NewSourceFile(path string, period time.Duration, updates chan<- interface{}) *SourceFile {
+func NewSourceFile(path string, period time.Duration, updates chan<- interface{}) {
-	config := &SourceFile{
+	config := &sourceFile{
 		path:    path,
 		updates: updates,
 	}
 	glog.V(1).Infof("Watching path %q", path)
 	go util.Forever(config.run, period)
-	return config
 }
 
-func (s *SourceFile) run() {
+func (s *sourceFile) run() {
 	if err := s.extractFromPath(); err != nil {
 		glog.Errorf("Unable to read config path %q: %v", s.path, err)
 	}
 }
 
-func (s *SourceFile) extractFromPath() error {
+func (s *sourceFile) extractFromPath() error {
 	path := s.path
 	statInfo, err := os.Stat(path)
 	if err != nil {

pkg/kubelet/config/file_test.go

@@ -81,7 +81,7 @@ func ExampleManifestAndPod(id string) (api.ContainerManifest, api.BoundPod) {
 
 func TestExtractFromNonExistentFile(t *testing.T) {
 	ch := make(chan interface{}, 1)
-	c := SourceFile{"/some/fake/file", ch}
+	c := sourceFile{"/some/fake/file", ch}
 	err := c.extractFromPath()
 	if err == nil {
 		t.Errorf("Expected error")
@@ -143,7 +143,7 @@ func TestExtractFromBadDataFile(t *testing.T) {
 	defer os.Remove(file.Name())
 
 	ch := make(chan interface{}, 1)
-	c := SourceFile{file.Name(), ch}
+	c := sourceFile{file.Name(), ch}
 	err := c.extractFromPath()
 	if err == nil {
 		t.Fatalf("Expected error")
@@ -164,7 +164,7 @@ func TestExtractFromValidDataFile(t *testing.T) {
 	expectedPod.Name = simpleSubdomainSafeHash(file.Name())
 
 	ch := make(chan interface{}, 1)
-	c := SourceFile{file.Name(), ch}
+	c := sourceFile{file.Name(), ch}
 	err = c.extractFromPath()
 	if err != nil {
 		t.Fatalf("Unexpected error: %v", err)
@@ -184,7 +184,7 @@ func TestExtractFromEmptyDir(t *testing.T) {
 	defer os.RemoveAll(dirName)
 
 	ch := make(chan interface{}, 1)
-	c := SourceFile{dirName, ch}
+	c := sourceFile{dirName, ch}
 	err = c.extractFromPath()
 	if err != nil {
 		t.Fatalf("Unexpected error: %v", err)
@@ -232,7 +232,7 @@ func TestExtractFromDir(t *testing.T) {
 	}
 
 	ch := make(chan interface{}, 1)
-	c := SourceFile{dirName, ch}
+	c := sourceFile{dirName, ch}
 	err = c.extractFromPath()
 	if err != nil {
 		t.Fatalf("Unexpected error: %v", err)

pkg/kubelet/config/http.go

@@ -33,30 +33,29 @@ import (
 	"gopkg.in/v1/yaml"
 )
 
-type SourceURL struct {
+type sourceURL struct {
 	url     string
 	updates chan<- interface{}
 	data    []byte
 }
 
-func NewSourceURL(url string, period time.Duration, updates chan<- interface{}) *SourceURL {
+func NewSourceURL(url string, period time.Duration, updates chan<- interface{}) {
-	config := &SourceURL{
+	config := &sourceURL{
 		url:     url,
 		updates: updates,
 		data:    nil,
 	}
 	glog.V(1).Infof("Watching URL %s", url)
 	go util.Forever(config.run, period)
-	return config
 }
 
-func (s *SourceURL) run() {
+func (s *sourceURL) run() {
 	if err := s.extractFromURL(); err != nil {
 		glog.Errorf("Failed to read URL: %v", err)
 	}
 }
 
-func (s *SourceURL) extractFromURL() error {
+func (s *sourceURL) extractFromURL() error {
 	resp, err := http.Get(s.url)
 	if err != nil {
 		return err

pkg/kubelet/config/http_test.go

@@ -41,7 +41,7 @@ func TestURLErrorNotExistNoUpdate(t *testing.T) {
 
 func TestExtractFromHttpBadness(t *testing.T) {
 	ch := make(chan interface{}, 1)
-	c := SourceURL{"http://localhost:49575/_not_found_", ch, nil}
+	c := sourceURL{"http://localhost:49575/_not_found_", ch, nil}
 	if err := c.extractFromURL(); err == nil {
 		t.Errorf("Expected error")
 	}
@@ -107,7 +107,7 @@ func TestExtractInvalidManifest(t *testing.T) {
 		testServer := httptest.NewServer(&fakeHandler)
 		defer testServer.Close()
 		ch := make(chan interface{}, 1)
-		c := SourceURL{testServer.URL, ch, nil}
+		c := sourceURL{testServer.URL, ch, nil}
 		if err := c.extractFromURL(); err == nil {
 			t.Errorf("%s: Expected error", testCase.desc)
 		}
@@ -184,7 +184,7 @@ func TestExtractFromHTTP(t *testing.T) {
 		testServer := httptest.NewServer(&fakeHandler)
 		defer testServer.Close()
 		ch := make(chan interface{}, 1)
-		c := SourceURL{testServer.URL, ch, nil}
+		c := sourceURL{testServer.URL, ch, nil}
 		if err := c.extractFromURL(); err != nil {
 			t.Errorf("%s: Unexpected error: %v", testCase.desc, err)
 			continue