How to format a log record inside ```emit``` function instead of creating a formatter object?

Question

I wrote a custom logging handler to send a log record to a http point.

class CustomHttpHandler(logging.Handler):
    def __init__(self, url: str):
        # url is the endpoint to send log
        self.url = url
        self.session = requests.Session()
  

    def emit(self, record):
        self.session.post(self.url, data=record)

import logging
from handler import CustomHttpHandler


logger = logging.getLogger(__name__)

formatter = logging.Formatter(json.dumps({
    'time': '%(asctime)s',
    message': '%(message)s'
}))

handler = CustomHandler("http://myurl")

logger.addHandler(chandler)
logger.setFormatter(formatter)

Is there any way that I can format a log record inside emit function instead of creating formatter object and pass it with setFormatter function?

Answer 1

I don't see a problem using setFormatter, you just need to use it in your emit function like so

def emit(self, record):  
    print(self.format(record))

Also note that you can apply your formater only to this specific handler if you want:

handler.setFormatter(formatter)