make token caching an opt in feature

If implemented, users have to opt in to cache a token.

Signed-off-by: Soule BA <bah.soule@gmail.com>
Signed-off-by: Diego Rivera <diego.rivera@armedia.com>

cmd/helm/root.go

@@ -154,6 +154,7 @@ func newRootCmd(actionConfig *action.Configuration, out io.Writer, args []string
 
 	registryClient, err := registry.NewClient(
 		registry.ClientOptDebug(settings.Debug),
+		registry.ClientOptEnableCache(true),
 		registry.ClientOptWriter(out),
 		registry.ClientOptCredentialsFile(settings.RegistryConfig),
 	)

pkg/getter/ocigetter.go

@@ -63,7 +63,9 @@ func (g *OCIGetter) get(href string) (*bytes.Buffer, error) {
 
 // NewOCIGetter constructs a valid http/https client as a Getter
 func NewOCIGetter(ops ...Option) (Getter, error) {
-	registryClient, err := registry.NewClient()
+	registryClient, err := registry.NewClient(
+		registry.ClientOptEnableCache(true),
+	)
 	if err != nil {
 		return nil, err
 	}

pkg/pusher/ocipusher.go

@@ -85,7 +85,9 @@ func (pusher *OCIPusher) push(chartRef, href string) error {
 
 // NewOCIPusher constructs a valid OCI client as a Pusher
 func NewOCIPusher(ops ...Option) (Pusher, error) {
-	registryClient, err := registry.NewClient()
+	registryClient, err := registry.NewClient(
+		registry.ClientOptEnableCache(true),
+	)
 	if err != nil {
 		return nil, err
 	}

pkg/registry/client.go

@@ -53,7 +53,8 @@ a plus (+) when pulling from a registry.`
 type (
 	// Client works with OCI-compliant registries
 	Client struct {
-		debug bool
+		debug       bool
+		enableCache bool
 		// path to repository config file e.g. ~/.docker/config.json
 		credentialsFile    string
 		out                io.Writer
@@ -95,12 +96,18 @@ func NewClient(options ...ClientOption) (*Client, error) {
 		}
 		client.resolver = resolver
 	}
+
+	// allocate a cache if option is set
+	var cache registryauth.Cache
+	if client.enableCache {
+		cache = registryauth.DefaultCache
+	}
 	if client.registryAuthorizer == nil {
 		client.registryAuthorizer = &registryauth.Client{
 			Header: http.Header{
 				"User-Agent": {version.GetUserAgent()},
 			},
-			Cache: registryauth.DefaultCache,
+			Cache: cache,
 			Credential: func(ctx context.Context, reg string) (registryauth.Credential, error) {
 				dockerClient, ok := client.authorizer.(*dockerauth.Client)
 				if !ok {
@@ -138,6 +145,13 @@ func ClientOptDebug(debug bool) ClientOption {
 	}
 }
 
+// ClientOptEnableCache returns a function that sets the enableCache setting on a client options set
+func ClientOptEnableCache(enableCache bool) ClientOption {
+	return func(client *Client) {
+		client.enableCache = enableCache
+	}
+}
+
 // ClientOptWriter returns a function that sets the writer setting on client options set
 func ClientOptWriter(out io.Writer) ClientOption {
 	return func(client *Client) {

pkg/registry/client_test.go

@@ -70,6 +70,7 @@ func (suite *RegistryClientTestSuite) SetupSuite() {
 	var err error
 	suite.RegistryClient, err = NewClient(
 		ClientOptDebug(true),
+		ClientOptEnableCache(true),
 		ClientOptWriter(suite.Out),
 		ClientOptCredentialsFile(credentialsFile),
 	)

pkg/repo/repotest/server.go

@@ -153,6 +153,7 @@ func (srv *OCIServer) Run(t *testing.T, opts ...OCIServerOpt) {
 	// init test client
 	registryClient, err := ociRegistry.NewClient(
 		ociRegistry.ClientOptDebug(true),
+		ociRegistry.ClientOptEnableCache(true),
 		ociRegistry.ClientOptWriter(os.Stdout),
 		ociRegistry.ClientOptCredentialsFile(credentialsFile),
 	)