Python logging into file as a dictionary or JSON

Question

I am trying to set up logging where I can log in both stdout and on to a file. This i have accomplished using the following code:

logging.basicConfig(
              


        

Answer 1

So based on @abarnert, i found this Link which provided a good path to making this concept work for the most part. The code as it stands is:

logger=logging.getLogger()
logger.setLevel(logging.DEBUG)

file_handler=logging.FileHandler('foo.log')
stream_handler=logging.StreamHandler()

stream_formatter=logging.Formatter(
    '%(asctime)-15s %(levelname)-8s %(message)s')
file_formatter=logging.Formatter(
    "{'time':'%(asctime)s', 'name': '%(name)s', \
    'level': '%(levelname)s', 'message': '%(message)s'}"
)

file_handler.setFormatter(file_formatter)
stream_handler.setFormatter(stream_formatter)

logger.addHandler(file_handler)
logger.addHandler(stream_handler)

Although it does not fully meet the requirement, it doesnt require any pre processing, and allows me to create two log handlers.

Afterwards, i can use something like:

with open('foo.log') as f:
    logs = f.read().splitlines()
for l in logs:
    for key, value in eval(l):
        do something ...

to pull dict objects instead of fighting with improperly formatted JSON to accomplish what i had set out to accomplish.

Still am hoping for a more elegant solution.

Answer 2

With this code you can add the full traceback, timestamp and level to a json file of choice.

import json
import traceback
from datetime import datetime

def addLogging(logDict:dict):
    loggingsFile = 'loggings.json'

    with open(loggingsFile) as f:
        data = json.load(f)

    data.append(logDict)

    with open(loggingsFile, 'w') as f:
        json.dump(data, f)

def currentTimeUTC():
    return datetime.now().strftime('%d/%m/%Y %H:%M:%S')

try:
    print(5 / 0)
except ZeroDivisionError:
    fullTraceback = str(traceback.format_exc())
    addLogging({'timestamp': currentTimeUTC(), 'level': 'error', 'traceback': fullTraceback})

Output:

[
    {
        "timestamp": "09/06/2020 17:38:00",
        "level": "error",
        "traceback": "Traceback (most recent call last):\n  File \"d:testFullTraceback.py\", line 19, in <module>\n    print(5/0)\nZeroDivisionError: division by zero\n"
    }
]