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Pass middleware kwargs through configuration
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davidbrochart committed Oct 21, 2021
1 parent 4774b50 commit a401a48
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Showing 3 changed files with 34 additions and 14 deletions.
31 changes: 23 additions & 8 deletions fps/app.py
Original file line number Diff line number Diff line change
Expand Up @@ -282,6 +282,7 @@ def _load_middlewares(app: FastAPI) -> None:
pkg_names = {get_pkg_name(p, strip_fps=False) for p in grouped_middlewares}
logger.info(f"Loading middlewares from plugin package(s) {pkg_names}")

middleware_dict = {}
for p, middlewares in grouped_middlewares.items():
p_name = Config.plugin_name(p)
plugin_config = Config.from_name(p_name)
Expand All @@ -294,7 +295,6 @@ def _load_middlewares(app: FastAPI) -> None:
Config(FPSConfig).enabled_plugins
and p_name not in Config(FPSConfig).enabled_plugins
)
or p_name not in Config(FPSConfig).middlewares
)
if not middlewares or disabled:
disabled_msg = " (disabled)" if disabled else ""
Expand All @@ -303,15 +303,30 @@ def _load_middlewares(app: FastAPI) -> None:
)
continue

for plugin_middleware, plugin_kwargs in middlewares:
app.add_middleware(
plugin_middleware,
**plugin_kwargs,
)
middleware_dict.update(
{
f"{middleware.__module__}.{middleware.__qualname__}": middleware
for middleware in middlewares
}
)

logger.info(
f"{len(middlewares)} middleware(s) added from plugin '{p_name}'"
middleware_cnt = 0
for middleware in Config(FPSConfig).middlewares:
middleware_class_path = middleware.class_path
if middleware_class_path not in middleware_dict:
logger.warning(f"Unknown middleware {middleware_class_path}")
continue

logger.info(f"Adding middleware {middleware_class_path}")
middleware_class = middleware_dict[middleware_class_path]
app.add_middleware(
middleware_class,
**middleware.kwargs,
)
middleware_cnt += 1

logger.info(f"{middleware_cnt} middleware(s) added")

else:
logger.info("No plugin middleware to load")

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9 changes: 7 additions & 2 deletions fps/config.py
Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
import os
from collections import OrderedDict
from types import ModuleType
from typing import Dict, List, Tuple, Type
from typing import Any, Dict, List, Tuple, Type

import toml
from pydantic import BaseModel, create_model, validator
Expand All @@ -25,6 +25,11 @@ def create_default_plugin_model(plugin_name: str):
return create_model(f"{plugin_name}Model", __base__=PluginModel)


class MiddlewareModel(BaseModel):
class_path: str
kwargs: Dict[str, Any]


class FPSConfig(BaseModel):
# fastapi
title: str = "FPS"
Expand All @@ -36,7 +41,7 @@ class FPSConfig(BaseModel):
disabled_plugins: List[str] = []

# plugin middlewares
middlewares: List[str] = []
middlewares: List[MiddlewareModel] = []

@validator("enabled_plugins", "disabled_plugins", "middlewares")
def plugins_format(cls, plugins):
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8 changes: 4 additions & 4 deletions fps/hooks.py
Original file line number Diff line number Diff line change
Expand Up @@ -79,13 +79,13 @@ def plugin_name_callback() -> str:


@pluggy.HookspecMarker(HookType.MIDDLEWARE.value)
def middleware() -> Tuple[type, Dict[str, Any]]:
def middleware() -> type:
pass


def register_middleware(m: type, **kwargs: Dict[str, Any]):
def middleware_callback() -> Tuple[type, Dict[str, Any]]:
return m, kwargs
def register_middleware(m: type):
def middleware_callback() -> type:
return m

return pluggy.HookimplMarker(HookType.MIDDLEWARE.value)(
function=middleware_callback, specname="middleware"
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