fix(helm): make repo remove clear cache

cmd/helm/repo.go

@@ -20,6 +20,7 @@ import (
 	"errors"
 	"fmt"
 	"io/ioutil"
+	"os"
 	"path/filepath"
 
 	"github.com/gosuri/uitable"
@@ -129,7 +130,7 @@ func index(dir, url string) error {
 }
 
 func addRepository(name, url string) error {
-	if err := repo.DownloadIndexFile(name, url, cacheDirectory(name+"-index.yaml")); err != nil {
+	if err := repo.DownloadIndexFile(name, url, cacheIndexFile(name)); err != nil {
 		return errors.New("Looks like " + url + " is not a valid chart repository or cannot be reached: " + err.Error())
 	}
 
@@ -152,6 +153,9 @@ func removeRepoLine(name string) error {
 		if err := ioutil.WriteFile(repositoriesFile(), b, 0666); err != nil {
 			return err
 		}
+		if err := removeRepoCache(name); err != nil {
+			return err
+		}
 
 	} else {
 		return fmt.Errorf("The repository, %s, does not exist in your repositories list", name)
@@ -160,6 +164,16 @@ func removeRepoLine(name string) error {
 	return nil
 }
 
+func removeRepoCache(name string) error {
+	if _, err := os.Stat(cacheIndexFile(name)); err == nil {
+		err = os.Remove(cacheIndexFile(name))
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 func insertRepoLine(name, url string) error {
 	f, err := repo.LoadRepositoriesFile(repositoriesFile())
 	if err != nil {

cmd/helm/repo_test.go

@@ -82,10 +82,17 @@ func TestRepoRemove(t *testing.T) {
 		t.Errorf("%s", err)
 	}
 
+	mf, _ := os.Create(cacheIndexFile(testName))
+	mf.Close()
+
 	if err := removeRepoLine(testName); err != nil {
 		t.Errorf("Error removing %s from repositories", testName)
 	}
 
+	if _, err := os.Stat(cacheIndexFile(testName)); err == nil {
+		t.Errorf("Error cache file was not removed for repository %s", testName)
+	}
+
 	f, err := repo.LoadRepositoriesFile(repositoriesFile())
 	if err != nil {
 		t.Errorf("%s", err)

cmd/helm/structure.go

@@ -43,6 +43,10 @@ func cacheDirectory(paths ...string) string {
 	return filepath.Join(fragments...)
 }
 
+func cacheIndexFile(repoName string) string {
+	return cacheDirectory(repoName + "-index.yaml")
+}
+
 func localRepoDirectory(paths ...string) string {
 	fragments := append([]string{repositoryDirectory(), localRepoPath}, paths...)
 	return filepath.Join(fragments...)

cmd/helm/update.go

@@ -62,8 +62,7 @@ func updateCharts(repos map[string]string, verbose bool) {
 		wg.Add(1)
 		go func(n, u string) {
 			defer wg.Done()
-			indexFileName := cacheDirectory(n + "-index.yaml")
+			err := repo.DownloadIndexFile(n, u, cacheIndexFile(n))
-			err := repo.DownloadIndexFile(n, u, indexFileName)
 			if err != nil {
 				updateErr := "...Unable to get an update from the " + n + " chart repository"
 				if verbose {