This is ChatGPT Plugin Template for FastAPI shows directory structure and necessary FastAPI request component initialized.

ChatGPT-Plugin-Template.py

"""
Description: This is ChatGPT Plugin for [YOUR_APP_NAME]
Server API : FastAPI.
Language: Python.
Date: 26/05/2023.
Author : HeavenHM
"""

# Importing the required libraries.
from fastapi import FastAPI, Request, Depends,Response
from fastapi.responses import FileResponse
from fastapi.middleware.cors import CORSMiddleware
from fastapi.staticfiles import StaticFiles
from pydantic import BaseModel
from starlette.requests import Request
from contextvars import ContextVar
from waitress import serve
from threading import Thread
import logging
import uvicorn
import json


#defining the origin for CORS
ORIGINS = [
  "localhost:8000", "https://chat.openai.com"
]

## Main application for FastAPI Web Server
app = FastAPI()
app.add_middleware(
  CORSMiddleware,
  allow_origins=ORIGINS,
  allow_credentials=True,
  allow_methods=["*"],
  allow_headers=["*"],
)

# Mount the .well-known directory.
app.mount("/.well-known", StaticFiles(directory=".well-known"), name="static")

# Setup logging for the application.
global logger

# Context variable to store the request.
# Credit - https://sl.bing.net/ib0YUGReKZg
request_var: ContextVar[Request] = ContextVar("request")

#Method to configure logs.
def configure_logger(name: str, filename: str):
  logger = logging.getLogger(name)
  logger.setLevel(logging.INFO)

  file_handler = logging.FileHandler(filename)
  formatter = logging.Formatter(
    '%(asctime)s - %(name)s - %(levelname)s - %(message)s')
  file_handler.setFormatter(formatter)

  logger.addHandler(file_handler)
  return logger


# Helper method to get the request.
def get_request():
  return request_var.get()

def set_request(request: Request):
  request_var.set(request)

@app.middleware("http")
async def set_request_middleware(request: Request, call_next):
  set_request(request)
  response = await call_next(request)
  return response

# Plugin logo.
@app.get("/logo.png")
async def plugin_logo():
  filename = 'logo.png'
  logging.info(f"logo filename is {filename}")
  return FileResponse(filename)

# Plugin manifest.
@app.get("/.well-known/ai-plugin.json")
async def plugin_manifest():
  with open("./.well-known/ai-plugin.json") as f:
    text = f.read()
    return Response(text, media_type="text/json")

# Plugin OpenAPI spec.
@app.get("/openapi.yaml")
async def openapi_spec():
  with open("openapi.yaml") as f:
    text = f.read()
    return Response(text, media_type="text/yaml")

@app.get('/help')
@app.get('/')
async def help():
  logger.info("help: Displayed for Plugin Guide")
  json_data = {}
  return json_data

# Testing purpose.
# call this with uvicorn main:app --reload only.
#logger = configure_logger('YOUR_APP_NAME', 'YOUR_APP_NAME.log')

# Run the app.
# Will only work with python main.py
if __name__ == "__main__":
  logger = configure_logger('YOUR_APP_NAME', 'YOUR_APP_NAME.log')
  uvicorn.run(app, host='127.0.0.1', port=8000)