Python Flask logging to multiple files - flask

Question

I have a flask application, which calls 2 functions from 2 different files.
I've setup logging to 2 different files.
However, the logging always seems to append to one file (whatever end point is hit first)
Here is the structure of the files -
app.py
from file1 import fun1
from file2 import fun2
#app.route("/end_point1")
def data_1:
return fun1()
#app.route("/end_point2")
def data_2:
return fun2()
file1.py
import logging
def fun1:
logging.basicConfig(filename = "file1.log")
logging.info("Logging function 1 details to to file1")
return foo
file2.py
def fun2:
logging.basicConfig(filename = "file2.log")
logging.info("Logging function 2 details to to file2")
return bar
This logs fine (separately) when I run the individual python files - file1.py / file2.py
But the logs append to just one file when I run the API.
What am I doing wrong with the logging? How can I fix it?

Answer 1

Add this to logger_setup.py
import logging
from pathlib import Path
formatter = logging.Formatter('%(asctime)s - %(levelname)s - [%(filename)s:%(lineno)d] - %(message)s')
def setup_logger( name, log_file, level=logging.DEBUG):
my_file = Path(log_file)
# print("check the if condition for the file")
# print(my_file.is_file())
if my_file.is_file():
#print(logging.getLogger(name).hasHandlers())
# if logging.getLogger(name).hasHandlers():
if len(logging.getLogger(name).handlers)>0:
return logging.getLogger(name)
else:
handler = logging.FileHandler(log_file, mode='a')
handler.setFormatter(formatter)
logger = logging.getLogger(name)
logger.setLevel(level)
logger.addHandler(handler)
logger.propagate = False
return logger
else:
handler = logging.FileHandler(log_file, mode='a')
handler.setFormatter(formatter)
logger = logging.getLogger(name)
logger.setLevel(level)
logger.addHandler(handler)
logger.propagate = False
return logger
Inside the file1 and 2 you can use something like this
import logging
import logger_setup
def fun1():
log_location = 'logs'
logger = logger_setup.setup_logger(__name__,log_location+__name__+'.log')
logger.info("Logging function 1 details to to file1")
return "1"