Distinct every request with an ID on your logger and make your log looks like chained
Very easy to initialize for both FastAPI and Flask.
from fastapi import FastAPI, Request
from chain_logging.fastapi import ChainLoggerMiddleware, get_chained_logger
app = FastAPI()
app.add_middleware(ChainLoggerMiddleware, before_request=True, after_request=True)
@app.get("/home")
async def home(request: Request):
logger = await get_chained_logger(request)
logger.info("this is a trial 1")
logger.error("this is a trial 2")
logger.warning("this is a trial 3")
logger.critical("this is a trial 3")
return {"status": "welcome home!"}
Output
[2022-11-09 03:11:31,835][ID:1667963491835419699][fastapi.py:225][INFO] - Received GET /home
[2022-11-09 03:11:31,836][ID:1667963491835419699][__init__.py:14][INFO] - this is a trial 1
[2022-11-09 03:11:31,836][ID:1667963491835419699][__init__.py:15][ERROR] - this is a trial 2
[2022-11-09 03:11:31,836][ID:1667963491835419699][__init__.py:16][WARNING] - this is a trial 3
[2022-11-09 03:11:31,836][ID:1667963491835419699][__init__.py:17][CRITICAL] - this is a trial 3
[2022-11-09 03:11:31,836][ID:1667963491835419699][fastapi.py:236][INFO] - Request done in 1.17ms
[2022-11-09 03:12:19,152][ID:1667963539151928302][fastapi.py:225][INFO] - Received GET /home
[2022-11-09 03:12:19,152][ID:1667963539151928302][__init__.py:14][INFO] - this is a trial 1
[2022-11-09 03:12:19,152][ID:1667963539151928302][__init__.py:15][ERROR] - this is a trial 2
[2022-11-09 03:12:19,152][ID:1667963539151928302][__init__.py:16][WARNING] - this is a trial 3
[2022-11-09 03:12:19,152][ID:1667963539151928302][__init__.py:17][CRITICAL] - this is a trial 3
[2022-11-09 03:12:19,153][ID:1667963539151928302][fastapi.py:236][INFO] - Request done in 1.37ms
[2022-11-09 03:12:21,892][ID:1667963541892393491][fastapi.py:225][INFO] - Received GET /home
[2022-11-09 03:12:21,893][ID:1667963541892393491][__init__.py:14][INFO] - this is a trial 1
[2022-11-09 03:12:21,893][ID:1667963541892393491][__init__.py:15][ERROR] - this is a trial 2
[2022-11-09 03:12:21,893][ID:1667963541892393491][__init__.py:16][WARNING] - this is a trial 3
[2022-11-09 03:12:21,893][ID:1667963541892393491][__init__.py:17][CRITICAL] - this is a trial 3
[2022-11-09 03:12:21,894][ID:1667963541892393491][fastapi.py:236][INFO] - Request done in 1.62ms
from flask import Flask
from chain_logging.flask import setup_chained_logger, logger
app = Flask(__name__)
setup_chained_logger(app, before_request=True, after_request=True)
@app.get("/home")
def home():
logger.info("this is a trial 1")
logger.error("this is a trial 2")
logger.warning("this is a trial 3")
logger.critical("this is a trial 3")
return {"status": "welcome home!"}
Output
[2022-11-09 10:23:29,769][ID:1667964209768871143][main.py:252][INFO] - Received GET /home
[2022-11-09 10:23:29,769][ID:1667964209768871143][main.py:328][INFO] - this is a trial 1
[2022-11-09 10:23:29,770][ID:1667964209768871143][main.py:329][ERROR] - this is a trial 2
[2022-11-09 10:23:29,770][ID:1667964209768871143][main.py:330][WARNING] - this is a trial 3
[2022-11-09 10:23:29,770][ID:1667964209768871143][main.py:331][CRITICAL] - this is a trial 3
[2022-11-09 10:23:29,771][ID:1667964209768871143][main.py:259][INFO] - Request done in 2.53ms
[2022-11-09 10:23:30,407][ID:1667964210407508175][main.py:252][INFO] - Received GET /home
[2022-11-09 10:23:30,408][ID:1667964210407508175][main.py:328][INFO] - this is a trial 1
[2022-11-09 10:23:30,408][ID:1667964210407508175][main.py:329][ERROR] - this is a trial 2
[2022-11-09 10:23:30,408][ID:1667964210407508175][main.py:330][WARNING] - this is a trial 3
[2022-11-09 10:23:30,409][ID:1667964210407508175][main.py:331][CRITICAL] - this is a trial 3
[2022-11-09 10:23:30,410][ID:1667964210407508175][main.py:259][INFO] - Request done in 2.41ms
[2022-11-09 10:23:30,831][ID:1667964210831595163][main.py:252][INFO] - Received GET /home
[2022-11-09 10:23:30,832][ID:1667964210831595163][main.py:328][INFO] - this is a trial 1
[2022-11-09 10:23:30,832][ID:1667964210831595163][main.py:329][ERROR] - this is a trial 2
[2022-11-09 10:23:30,832][ID:1667964210831595163][main.py:330][WARNING] - this is a trial 3
[2022-11-09 10:23:30,833][ID:1667964210831595163][main.py:331][CRITICAL] - this is a trial 3
[2022-11-09 10:23:30,833][ID:1667964210831595163][main.py:259][INFO] - Request done in 2.07ms
Create your new ChainLogger using ChainFilter
from fastapi import FastAPI, Request
from chain_logging.fastapi import ChainLoggerMiddleware, get_chained_logger, ChainLogger, ChainFilter
app = FastAPI()
my_filter = ChainFilter(log_format="%(asctime)s - %(exec_id)s - %(levelname)s - %(message)s")
logger = ChainLogger(name="ChainLogger", filter_object=my_filter)
app.add_middleware(ChainLoggerMiddleware, logger=logger, before_request=True, after_request=True)
from flask import Flask
from chain_logging.flask import setup_chained_logger, logger, ChainLogger, ChainFiler
app = Flask(__name__)
my_filter = ChainFilter(log_format="%(asctime)s - %(exec_id)s - %(levelname)s - %(message)s")
logger = ChainLogger(name="ChainLogger", filter_object=my_filter)
setup_chained_logger(app, logger=logger, before_request=True, after_request=True)