"""Application Logger.

======================

Creates application logger instance, that will send the logs to LOGGER_DSN.
If config.LOGGER_DSN value is not set, the logs will be sent to stdout.

"""

import uuid

from owslogger import logger
from transcoding import config


app_logger = logger.setup(
    config.ENVIRONMENT,
    config.LOGGER_NAME,
    config.LOGGER_LEVEL,
    config.APP_NAME,
    config.APP_VERSION)


def get_current_logger(correlation_id=None):
    """Get logger with a correlation_id attached.

    Args:
        correlation_id: correlation_id that will be sent along with log record

    Returns:
        logger.OwsLoggingAdapter: instance of OwsLoggingAdapter with
        correlation_id attached.
    """
    return logger.OwsLoggingAdapter(app_logger, {
        'correlation_id': correlation_id or uuid.uuid4()
    })