from logging.config import fileConfig
from tempfile import NamedTemporaryFile

GUNICORN_DEFAULTS = dict(
    version=1,
    disable_existing_loggers=False,

    loggers={
        "root": {"level": "INFO", "handlers": ["console"]},
        "gunicorn.error": {
            "level": "INFO",
            "handlers": ["error_console"],
            "propagate": True,
            "qualname": "gunicorn.error"
            },
        "gunicorn.access": {
            "level": "INFO",
            "handlers": ["console"],
            "propagate": True,
            "qualname": "gunicorn.access"
            },
        },
    handlers={
        "console": {
            "class": "logging.StreamHandler",
            "formatter": "generic",
            "stream": "sys.stdout"
            },
        "error_console": {
            "class": "logging.StreamHandler",
            "formatter": "generic",
            "stream": "sys.stderr"
            },
        },
    formatters={
        "generic": {
            "format": "%(asctime)s [%(process)d] [%(levelname)s] %(message)s",
            "datefmt": "[%Y-%m-%d %H:%M:%S %z]",
            "class": "logging.Formatter"
            },
        },
    )


INIFILE_CONTENTS = """[formatters]
keys=default

[formatter_default]
format=%(asctime)s:%(levelname)s:%(message)s
class=logging.Formatter

[handlers]
keys=console, error_file

[handler_console]
class=logging.StreamHandler
formatter=default
args=tuple()

[handler_error_file]
class=logging.FileHandler
level=ERROR
formatter=default
args=("error.log", "w")

[loggers]
keys=root

[logger_root]
level=DEBUG
formatter=default
handlers=console,error_file"""

with NamedTemporaryFile(mode='w+t', encoding='utf-8') as inifile:
    inifile.write(INIFILE_CONTENTS)
    inifile.flush()
    fileConfig(inifile.name, defaults=GUNICORN_DEFAULTS)
    print("Hey, it worked!")