pi-ku/backend/config/logging.py

from pathlib import Path

import structlog

BASE_DIR = Path(__file__).resolve().parent.parent
LOGS_DIR = BASE_DIR / "logs"

LOGS_DIR.mkdir(parents=True, exist_ok=True)

structlog.configure(
    processors=[
        structlog.contextvars.merge_contextvars,
        structlog.stdlib.filter_by_level,
        structlog.processors.TimeStamper(fmt="iso"),
        structlog.stdlib.add_logger_name,
        structlog.stdlib.add_log_level,
        structlog.stdlib.PositionalArgumentsFormatter(),
        structlog.processors.StackInfoRenderer(),
        structlog.processors.format_exc_info,
        structlog.processors.UnicodeDecoder(),
        structlog.stdlib.ProcessorFormatter.wrap_for_formatter,
    ],
    logger_factory=structlog.stdlib.LoggerFactory(),
    cache_logger_on_first_use=True,
)

LOGGING = {
    "version": 1,
    "disable_existing_loggers": False,
    "formatters": {
        "json_formatter": {
            "()": structlog.stdlib.ProcessorFormatter,
            "processor": structlog.processors.JSONRenderer(),
        },
        "plain_console": {
            "()": structlog.stdlib.ProcessorFormatter,
            "processor": structlog.dev.ConsoleRenderer(colors=True),
        },
        "key_value": {
            "()": structlog.stdlib.ProcessorFormatter,
            "processor": structlog.processors.KeyValueRenderer(key_order=["timestamp", "level", "event", "logger"]),
        },
    },
    "handlers": {
        "console": {
            "class": "logging.StreamHandler",
            "formatter": "plain_console",
        },
        "json_file": {
            "class": "logging.handlers.WatchedFileHandler",
            "filename": LOGS_DIR / "json.log",
            "formatter": "json_formatter",
        },
        "flat_line_file": {
            "class": "logging.handlers.WatchedFileHandler",
            "filename": LOGS_DIR / "flat_line.log",
            "formatter": "key_value",
        },
        "letters_log": {
            "class": "logging.handlers.WatchedFileHandler",
            "filename": LOGS_DIR / "letters.log",
            "formatter": "key_value",
        },
        "scheduler_log": {
            "class": "logging.handlers.WatchedFileHandler",
            "filename": LOGS_DIR / "scheduler.log",
            "formatter": "key_value",
        },
    },
    "loggers": {
        "django_structlog": {
            "handlers": ["console", "flat_line_file", "json_file"],
            "level": "INFO",
            "propagate": False,
        },
        "django.core.mail": {
            "handlers": ["console", "flat_line_file", "json_file"],
            "level": "DEBUG",
            "propagate": False,
        },
        "letters.tasks": {
            "handlers": ["console", "scheduler_log"],
            "level": "INFO",
            "propagate": False,
        },
        "letters": {
            "handlers": ["console", "flat_line_file", "json_file", "letters_log"],
            "level": "INFO",
            "propagate": False,
        },
        "": {
            "handlers": ["console"],
            "level": "INFO",
        },
    },
}