anti
55896b0caa
- decnet/logging/syslog_formatter.py: RFC 5424 formatter (local0 facility, decnet@55555 SD element ID, full escaping per §6.3.3) - decnet/logging/file_handler.py: rotating file handler (10 MB / 5 backups), path configurable via DECNET_LOG_FILE env var - templates/decnet_logging.py: combined syslog_line / write_syslog_file / forward_syslog helper distributed to all 22 service template dirs - All templates/*/server.py: replaced ad-hoc JSON _forward/_log with RFC 5424 syslog_line + write_syslog_file + forward_syslog - All templates/*/Dockerfile: COPY decnet_logging.py /opt/ - DecnetConfig: added log_file field; CLI: --log-file flag; composer injects DECNET_LOG_FILE env var into service containers - tests/test_syslog_formatter.py + tests/test_file_handler.py: 25 new tests Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
"""
|
|
Rotating file handler for DECNET syslog output.
|
|
|
|
Writes RFC 5424 syslog lines to a local file.
|
|
Path is controlled by the DECNET_LOG_FILE environment variable
|
|
(default: /var/log/decnet/decnet.log).
|
|
"""
|
|
|
|
import logging
|
|
import logging.handlers
|
|
import os
|
|
from pathlib import Path
|
|
|
|
_LOG_FILE_ENV = "DECNET_LOG_FILE"
|
|
_DEFAULT_LOG_FILE = "/var/log/decnet/decnet.log"
|
|
_MAX_BYTES = 10 * 1024 * 1024 # 10 MB
|
|
_BACKUP_COUNT = 5
|
|
|
|
_handler: logging.handlers.RotatingFileHandler | None = None
|
|
_logger: logging.Logger | None = None
|
|
|
|
|
|
def _get_logger() -> logging.Logger:
|
|
global _handler, _logger
|
|
if _logger is not None:
|
|
return _logger
|
|
|
|
log_path = Path(os.environ.get(_LOG_FILE_ENV, _DEFAULT_LOG_FILE))
|
|
log_path.parent.mkdir(parents=True, exist_ok=True)
|
|
|
|
_handler = logging.handlers.RotatingFileHandler(
|
|
log_path,
|
|
maxBytes=_MAX_BYTES,
|
|
backupCount=_BACKUP_COUNT,
|
|
encoding="utf-8",
|
|
)
|
|
_handler.setFormatter(logging.Formatter("%(message)s"))
|
|
|
|
_logger = logging.getLogger("decnet.syslog")
|
|
_logger.setLevel(logging.DEBUG)
|
|
_logger.propagate = False
|
|
_logger.addHandler(_handler)
|
|
|
|
return _logger
|
|
|
|
|
|
def write_syslog(line: str) -> None:
|
|
"""Write a single RFC 5424 syslog line to the rotating log file."""
|
|
try:
|
|
_get_logger().info(line)
|
|
except Exception:
|
|
pass
|
|
|
|
|
|
def get_log_path() -> Path:
|
|
"""Return the configured log file path (for tests/inspection)."""
|
|
return Path(os.environ.get(_LOG_FILE_ENV, _DEFAULT_LOG_FILE))
|