🛃 📨 & APIRoute 🎓¶
💼, 👆 5️⃣📆 💚 🔐 ⚛ ⚙️ Request
& APIRoute
🎓.
🎯, 👉 5️⃣📆 👍 🎛 ⚛ 🛠️.
🖼, 🚥 👆 💚 ✍ ⚖️ 🔬 📨 💪 ⏭ ⚫️ 🛠️ 👆 🈸.
Danger
👉 "🏧" ⚒.
🚥 👆 ▶️ ⏮️ FastAPI 👆 💪 💚 🚶 👉 📄.
⚙️ 💼¶
⚙️ 💼 🔌:
- 🏭 🚫-🎻 📨 💪 🎻 (✅
msgpack
). - 🗜 🗜-🗜 📨 💪.
- 🔁 🚨 🌐 📨 💪.
🚚 🛃 📨 💪 🔢¶
➡️ 👀 ❔ ⚒ ⚙️ 🛃 Request
🏿 🗜 🗜 📨.
& APIRoute
🏿 ⚙️ 👈 🛃 📨 🎓.
✍ 🛃 GzipRequest
🎓¶
Tip
👉 🧸 🖼 🎦 ❔ ⚫️ 👷, 🚥 👆 💪 🗜 🐕🦺, 👆 💪 ⚙️ 🚚 GzipMiddleware
.
🥇, 👥 ✍ GzipRequest
🎓, ❔ 🔜 📁 Request.body()
👩🔬 🗜 💪 🔍 ☑ 🎚.
🚥 📤 🙅♂ gzip
🎚, ⚫️ 🔜 🚫 🔄 🗜 💪.
👈 🌌, 🎏 🛣 🎓 💪 🍵 🗜 🗜 ⚖️ 🗜 📨.
import gzip
from typing import Callable, List
from fastapi import Body, FastAPI, Request, Response
from fastapi.routing import APIRoute
class GzipRequest(Request):
async def body(self) -> bytes:
if not hasattr(self, "_body"):
body = await super().body()
if "gzip" in self.headers.getlist("Content-Encoding"):
body = gzip.decompress(body)
self._body = body
return self._body
class GzipRoute(APIRoute):
def get_route_handler(self) -> Callable:
original_route_handler = super().get_route_handler()
async def custom_route_handler(request: Request) -> Response:
request = GzipRequest(request.scope, request.receive)
return await original_route_handler(request)
return custom_route_handler
app = FastAPI()
app.router.route_class = GzipRoute
@app.post("/sum")
async def sum_numbers(numbers: List[int] = Body()):
return {"sum": sum(numbers)}
✍ 🛃 GzipRoute
🎓¶
⏭, 👥 ✍ 🛃 🏿 fastapi.routing.APIRoute
👈 🔜 ⚒ ⚙️ GzipRequest
.
👉 🕰, ⚫️ 🔜 📁 👩🔬 APIRoute.get_route_handler()
.
👉 👩🔬 📨 🔢. & 👈 🔢 ⚫️❔ 🔜 📨 📨 & 📨 📨.
📥 👥 ⚙️ ⚫️ ✍ GzipRequest
⚪️➡️ ⏮️ 📨.
import gzip
from typing import Callable, List
from fastapi import Body, FastAPI, Request, Response
from fastapi.routing import APIRoute
class GzipRequest(Request):
async def body(self) -> bytes:
if not hasattr(self, "_body"):
body = await super().body()
if "gzip" in self.headers.getlist("Content-Encoding"):
body = gzip.decompress(body)
self._body = body
return self._body
class GzipRoute(APIRoute):
def get_route_handler(self) -> Callable:
original_route_handler = super().get_route_handler()
async def custom_route_handler(request: Request) -> Response:
request = GzipRequest(request.scope, request.receive)
return await original_route_handler(request)
return custom_route_handler
app = FastAPI()
app.router.route_class = GzipRoute
@app.post("/sum")
async def sum_numbers(numbers: List[int] = Body()):
return {"sum": sum(numbers)}
"📡 ℹ"
Request
✔️ request.scope
🔢, 👈 🐍 dict
⚗ 🗃 🔗 📨.
Request
✔️ request.receive
, 👈 🔢 "📨" 💪 📨.
scope
dict
& receive
🔢 👯♂️ 🍕 🔫 🔧.
& 👈 2️⃣ 👜, scope
& receive
, ⚫️❔ 💪 ✍ 🆕 Request
👐.
💡 🌅 🔃 Request
✅ 💃 🩺 🔃 📨.
🕴 👜 🔢 📨 GzipRequest.get_route_handler
🔨 🎏 🗜 Request
GzipRequest
.
🔨 👉, 👆 GzipRequest
🔜 ✊ 💅 🗜 📊 (🚥 💪) ⏭ 🚶♀️ ⚫️ 👆 ➡ 🛠️.
⏮️ 👈, 🌐 🏭 ⚛ 🎏.
✋️ ↩️ 👆 🔀 GzipRequest.body
, 📨 💪 🔜 🔁 🗜 🕐❔ ⚫️ 📐 FastAPI 🕐❔ 💪.
🔐 📨 💪 ⚠ 🐕🦺¶
👥 💪 ⚙️ 👉 🎏 🎯 🔐 📨 💪 ⚠ 🐕🦺.
🌐 👥 💪 🍵 📨 🔘 try
/except
🍫:
from typing import Callable, List
from fastapi import Body, FastAPI, HTTPException, Request, Response
from fastapi.exceptions import RequestValidationError
from fastapi.routing import APIRoute
class ValidationErrorLoggingRoute(APIRoute):
def get_route_handler(self) -> Callable:
original_route_handler = super().get_route_handler()
async def custom_route_handler(request: Request) -> Response:
try:
return await original_route_handler(request)
except RequestValidationError as exc:
body = await request.body()
detail = {"errors": exc.errors(), "body": body.decode()}
raise HTTPException(status_code=422, detail=detail)
return custom_route_handler
app = FastAPI()
app.router.route_class = ValidationErrorLoggingRoute
@app.post("/")
async def sum_numbers(numbers: List[int] = Body()):
return sum(numbers)
🚥 ⚠ 📉, Request
👐 🔜 ↔, 👥 💪 ✍ & ⚒ ⚙️ 📨 💪 🕐❔ 🚚 ❌:
from typing import Callable, List
from fastapi import Body, FastAPI, HTTPException, Request, Response
from fastapi.exceptions import RequestValidationError
from fastapi.routing import APIRoute
class ValidationErrorLoggingRoute(APIRoute):
def get_route_handler(self) -> Callable:
original_route_handler = super().get_route_handler()
async def custom_route_handler(request: Request) -> Response:
try:
return await original_route_handler(request)
except RequestValidationError as exc:
body = await request.body()
detail = {"errors": exc.errors(), "body": body.decode()}
raise HTTPException(status_code=422, detail=detail)
return custom_route_handler
app = FastAPI()
app.router.route_class = ValidationErrorLoggingRoute
@app.post("/")
async def sum_numbers(numbers: List[int] = Body()):
return sum(numbers)
🛃 APIRoute
🎓 📻¶
👆 💪 ⚒ route_class
🔢 APIRouter
:
import time
from typing import Callable
from fastapi import APIRouter, FastAPI, Request, Response
from fastapi.routing import APIRoute
class TimedRoute(APIRoute):
def get_route_handler(self) -> Callable:
original_route_handler = super().get_route_handler()
async def custom_route_handler(request: Request) -> Response:
before = time.time()
response: Response = await original_route_handler(request)
duration = time.time() - before
response.headers["X-Response-Time"] = str(duration)
print(f"route duration: {duration}")
print(f"route response: {response}")
print(f"route response headers: {response.headers}")
return response
return custom_route_handler
app = FastAPI()
router = APIRouter(route_class=TimedRoute)
@app.get("/")
async def not_timed():
return {"message": "Not timed"}
@router.get("/timed")
async def timed():
return {"message": "It's the time of my life"}
app.include_router(router)
👉 🖼, ➡ 🛠️ 🔽 router
🔜 ⚙️ 🛃 TimedRoute
🎓, & 🔜 ✔️ ➕ X-Response-Time
🎚 📨 ⏮️ 🕰 ⚫️ ✊ 🏗 📨:
import time
from typing import Callable
from fastapi import APIRouter, FastAPI, Request, Response
from fastapi.routing import APIRoute
class TimedRoute(APIRoute):
def get_route_handler(self) -> Callable:
original_route_handler = super().get_route_handler()
async def custom_route_handler(request: Request) -> Response:
before = time.time()
response: Response = await original_route_handler(request)
duration = time.time() - before
response.headers["X-Response-Time"] = str(duration)
print(f"route duration: {duration}")
print(f"route response: {response}")
print(f"route response headers: {response.headers}")
return response
return custom_route_handler
app = FastAPI()
router = APIRouter(route_class=TimedRoute)
@app.get("/")
async def not_timed():
return {"message": "Not timed"}
@router.get("/timed")
async def timed():
return {"message": "It's the time of my life"}
app.include_router(router)