This is my workaround for Sanic customized logging information on Gunicorn. I use Gunicorn with Sanic Gunicorn Worker. For this to work you need to add the --capture-output flag in the Gunicorn startup script and setting Sanic's default logging off..

sanic_logging_workaround.py

import time
from sanic import Sanic

# `configure_logging=False` will stop Sanic's default logging. You'll use print() for printing to stdout
app = Sanic(name="MyApp", configure_logging=False) 

@app.middleware('request')
async def embed_start_time(request):
    request.ctx.start_time = time.time() # Use requst context `request.ctx` to embed extra information
    
@app.middleware('response')
async def log_request(request, response):
    spend_time = round((time.time() - request.ctx.start_time) * 1000)
    print("[{}] [ACCESS] LEN:{}b\tLAT:{}ms IP:{} STATUS:{} {}\t{} {}".format(
            datetime.now().strftime("%Y-%m-%d %H:%M:%S"),
            len(response.body),
            spend_time,
            request.headers.get('remote_addr'),
            response.status,
            request.method,
            request.path,
            request.query_string)) # you can basically embed any information you wish here