How to pass and access the parameters inside middleware? Which passing technique to use, query parameter or path parameter?

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Example Code

from fastapi import FastAPI, Request

app = FastAPI()

@app.middleware("http")
async def add_process_time_header(request: Request, call_next):
    start_time = time.time()
    response = await call_next(request)
    process_time = time.time() - start_time
    response.headers["X-Process-Time"] = str(process_time)
    return response

Description

Assume that, I Should pass one parameter(eg: query) to the middleware (add_process_time_header), How should I pass the parameter, and how to access it inside the middleware?

Operating System

Linux

Operating System Details

No response

FastAPI Version

Flask-API==2.0

Python Version

3.6.9

Additional Context

No response

[pradeepdev-1995]

@includeamin Thank you.

[includeamin]

Just a quick example to give you an idea.

import time

from fastapi import FastAPI, Request

app = FastAPI()


@app.middleware("http")
async def add_process_time_header(request: Request, call_next):
    start_time = time.time()
    response = await call_next(request)
    process_time = time.time() - start_time
    if request.query_params.__contains__("set-process-time"):
        response.headers["X-Process-Time"] = str(process_time)
    return response


@app.get("/")
async def root():
    return {"message": "Hello World"}

URL: http://127.0.0.1:8000/?set-process-time=1