Fix for keyring errors when initializing Flyte for_sandbox config client

flytekit/clients/auth_helper.py

@@ -122,9 +122,12 @@ def upgrade_channel_to_proxy_authenticated(cfg: PlatformConfig, in_channel: grpc
     :param in_channel: grpc.Channel Precreated channel
     :return: grpc.Channel. New composite channel
     """
+
+    def authenticator_factory():
+        return get_proxy_authenticator(cfg)
+
     if cfg.proxy_command:
-        proxy_authenticator = get_proxy_authenticator(cfg)
-        return grpc.intercept_channel(in_channel, AuthUnaryInterceptor(proxy_authenticator))
+        return grpc.intercept_channel(in_channel, AuthUnaryInterceptor(authenticator_factory))
     else:
         return in_channel
 
@@ -137,8 +140,11 @@ def upgrade_channel_to_authenticated(cfg: PlatformConfig, in_channel: grpc.Chann
     :param in_channel: grpc.Channel Precreated channel
     :return: grpc.Channel. New composite channel
     """
-    authenticator = get_authenticator(cfg, RemoteClientConfigStore(in_channel))
-    return grpc.intercept_channel(in_channel, AuthUnaryInterceptor(authenticator))
+
+    def authenticator_factory():
+        return get_authenticator(cfg, RemoteClientConfigStore(in_channel))
+
+    return grpc.intercept_channel(in_channel, AuthUnaryInterceptor(authenticator_factory))
 
 
 def get_authenticated_channel(cfg: PlatformConfig) -> grpc.Channel:

flytekit/clients/grpc_utils/auth_interceptor.py

@@ -25,15 +25,22 @@ class AuthUnaryInterceptor(grpc.UnaryUnaryClientInterceptor, grpc.UnaryStreamCli
     is needed.
     """
 
-    def __init__(self, authenticator: Authenticator):
-        self._authenticator = authenticator
+    def __init__(self, get_authenticator: typing.Callable[[], Authenticator]):
+        self._get_authenticator = get_authenticator
+        self._authenticator = None
+
+    @property
+    def authenticator(self) -> Authenticator:
+        if self._authenticator is None:
+            self._authenticator = self._get_authenticator()
+        return self._authenticator
 
     def _call_details_with_auth_metadata(self, client_call_details: grpc.ClientCallDetails) -> grpc.ClientCallDetails:
         """
         Returns new ClientCallDetails with metadata added.
         """
         metadata = client_call_details.metadata
-        auth_metadata = self._authenticator.fetch_grpc_call_auth_metadata()
+        auth_metadata = self.authenticator.fetch_grpc_call_auth_metadata()
         if auth_metadata:
             metadata = []
             if client_call_details.metadata:
@@ -65,6 +72,7 @@ def intercept_unary_unary(
                 raise e
             if e.code() == grpc.StatusCode.UNAUTHENTICATED or e.code() == grpc.StatusCode.UNKNOWN:
                 self._authenticator.refresh_credentials()
+                self.authenticator.refresh_credentials()
                 updated_call_details = self._call_details_with_auth_metadata(client_call_details)
                 return continuation(updated_call_details, request)
         return fut
@@ -77,6 +85,7 @@ def intercept_unary_stream(self, continuation, client_call_details, request):
         c: grpc.Call = continuation(updated_call_details, request)
         if c.code() == grpc.StatusCode.UNAUTHENTICATED:
             self._authenticator.refresh_credentials()
+            self.authenticator.refresh_credentials()
             updated_call_details = self._call_details_with_auth_metadata(client_call_details)
             return continuation(updated_call_details, request)
         return c

tests/flytekit/unit/clients/auth/test_keyring_store.py

@@ -4,6 +4,15 @@
 
 from flytekit.clients.auth.keyring import Credentials, KeyringStore
 
+from flytekit.clients.auth_helper import upgrade_channel_to_authenticated, upgrade_channel_to_proxy_authenticated
+
+from flytekit.configuration import PlatformConfig
+
+import pytest
+
+from flytekit.clients.auth.authenticator import CommandAuthenticator
+
+from flytekit.clients.grpc_utils.auth_interceptor import AuthUnaryInterceptor
 
 @patch("keyring.get_password")
 def test_keyring_store_get(kr_get_password: MagicMock):
@@ -30,3 +39,34 @@ def test_keyring_store_set(kr_set_password: MagicMock):
 
     kr_set_password.side_effect = NoKeyringError()
     assert KeyringStore.retrieve("example2.com") is None
+
+@patch("flytekit.clients.auth.authenticator.KeyringStore")
+def test_upgrade_channel_to_authenticated_with_keyring_exception(mock_keyring_store):
+    mock_keyring_store.retrieve.side_effect = Exception("mock exception")
+
+    mock_channel = MagicMock()
+
+    platform_config = PlatformConfig()
+
+    try:
+        out_ch = upgrade_channel_to_authenticated(platform_config, mock_channel)
+    except Exception as e:
+        pytest.fail(f"upgrade_channel_to_authenticated Exception: {e}")
+
+    assert isinstance(out_ch._interceptor, AuthUnaryInterceptor)
+
+@patch("flytekit.clients.auth.authenticator.KeyringStore")
+def test_upgrade_channel_to_proxy_authenticated_with_keyring_exception(mock_keyring_store):
+    mock_keyring_store.retrieve.side_effect = Exception("mock exception")
+
+    mock_channel = MagicMock()
+
+    platform_config = PlatformConfig(auth_mode="Pkce", proxy_command=["echo", "foo-bar"])
+
+    try:
+        out_ch = upgrade_channel_to_proxy_authenticated(platform_config, mock_channel)
+    except Exception as e:
+        pytest.fail(f"upgrade_channel_to_proxy_authenticated Exception: {e}")
+
+    assert isinstance(out_ch._interceptor, AuthUnaryInterceptor)
+    assert isinstance(out_ch._interceptor.authenticator, CommandAuthenticator)

tests/flytekit/unit/clients/test_auth_helper.py

@@ -172,7 +172,7 @@ def test_upgrade_channel_to_proxy_auth():
         ch,
     )
     assert isinstance(out_ch._interceptor, AuthUnaryInterceptor)
-    assert isinstance(out_ch._interceptor._authenticator, CommandAuthenticator)
+    assert isinstance(out_ch._interceptor.authenticator, CommandAuthenticator)
 
 
 def test_get_proxy_authenticated_session():

tests/flytekit/unit/clients/test_friendly.py

@@ -9,7 +9,6 @@
 from flytekit.configuration import PlatformConfig
 from flytekit.models.project import Project as _Project
 
-
 @mock.patch("flytekit.clients.friendly._RawSynchronousFlyteClient.update_project")
 def test_update_project(mock_raw_update_project):
     client = _SynchronousFlyteClient(PlatformConfig.for_endpoint("a.b.com", True))

tests/flytekit/unit/clients/test_raw.py

@@ -5,7 +5,6 @@
 from flytekit.clients.raw import RawSynchronousFlyteClient
 from flytekit.configuration import PlatformConfig
 
-
 @mock.patch("flytekit.clients.raw._admin_service")
 @mock.patch("flytekit.clients.raw.grpc.insecure_channel")
 def test_update_project(mock_channel, mock_admin):
@@ -14,7 +13,6 @@ def test_update_project(mock_channel, mock_admin):
     client.update_project(project)
     mock_admin.AdminServiceStub().UpdateProject.assert_called_with(project, metadata=None)
 
-
 @mock.patch("flytekit.clients.raw._admin_service")
 @mock.patch("flytekit.clients.raw.grpc.insecure_channel")
 def test_list_projects_paginated(mock_channel, mock_admin):