import contextvars
import logging


trace_id_vars = contextvars.ContextVar('trace_id', default='')


class TraceIDLogRecord(logging.LogRecord):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.trace_id = trace_id_vars.get()


logging.setLogRecordFactory(TraceIDLogRecord)
logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(levelname)s - %(trace_id)s - %(message)s')