Make each inference provider into its own subdirectory

llama_toolchain/safety/meta_reference/shields/contrib/__init__.py

@@ -0,0 +1,5 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the terms described in the LICENSE file in
+# the root directory of this source tree.

llama_toolchain/safety/meta_reference/shields/contrib/third_party_shield.py

@@ -0,0 +1,35 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the terms described in the LICENSE file in
+# the root directory of this source tree.
+
+from typing import List
+
+from llama_models.llama3_1.api.datatypes import Message
+
+from llama_toolchain.safety.meta_reference.shields.base import (
+    OnViolationAction,
+    ShieldBase,
+    ShieldResponse,
+)
+
+_INSTANCE = None
+
+
+class ThirdPartyShield(ShieldBase):
+    @staticmethod
+    def instance(on_violation_action=OnViolationAction.RAISE) -> "ThirdPartyShield":
+        global _INSTANCE
+        if _INSTANCE is None:
+            _INSTANCE = ThirdPartyShield(on_violation_action)
+        return _INSTANCE
+
+    def __init__(
+        self,
+        on_violation_action: OnViolationAction = OnViolationAction.RAISE,
+    ):
+        super().__init__(on_violation_action)
+
+    async def run(self, messages: List[Message]) -> ShieldResponse:
+        super.run()  # will raise NotImplementedError