feat(config): add FastAPI base config class with docs/OpenAPI paths

bento_lib/config/pydantic.py

@@ -10,6 +10,7 @@
 __all__ = [
     "CorsOriginsParsingEnvSettingsSource",
     "BentoBaseConfig",
+    "BentoFastAPIBaseConfig",
 ]
 
 
@@ -59,3 +60,8 @@ def settings_customise_sources(
             dotenv_settings,
             file_secret_settings,
         )
+
+
+class BentoFastAPIBaseConfig(BentoBaseConfig):
+    service_docs_path: str = "/docs"
+    service_openapi_path: str = "/openapi.json"

tests/test_config.py

@@ -1,7 +1,7 @@
 import logging
 import os
 import pytest
-from bento_lib.config.pydantic import BentoBaseConfig
+from bento_lib.config.pydantic import BentoBaseConfig, BentoFastAPIBaseConfig
 from bento_lib.service_info.helpers import build_service_info_from_pydantic_config
 
 
@@ -27,6 +27,16 @@ def test_base_pydantic_config_env():
         os.environ["CORS_ORIGINS"] = ""
 
 
+def test_fastapi_pydantic_config():
+    assert BentoFastAPIBaseConfig.model_validate(TEST_CONFIG_VALUES).service_docs_path == "/docs"
+
+    try:
+        os.environ["SERVICE_DOCS_PATH"] = "/docs-alt"
+        assert BentoFastAPIBaseConfig.model_validate(TEST_CONFIG_VALUES).service_docs_path == "/docs-alt"
+    finally:
+        os.environ["SERVICE_DOCS_PATH"] = ""
+
+
 @pytest.mark.asyncio
 async def test_build_service_info_for_config():
     # Make sure we can build service info from an instance of a Pydantic config with no validation errors