base_agent/utils/logger.py

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"""
utils/logger.py
统一日志模块:从 settings 读取日志级别与文件路径配置
"""
import logging
import sys
from pathlib import Path
# ── ANSI 颜色常量 ──────────────────────────────────────────────
class Color:
RESET = "\033[0m"
BOLD = "\033[1m"
CYAN = "\033[96m"
GREEN = "\033[92m"
YELLOW = "\033[93m"
RED = "\033[91m"
MAGENTA = "\033[95m"
BLUE = "\033[94m"
GREY = "\033[90m"
class ColorFormatter(logging.Formatter):
LEVEL_COLORS = {
logging.DEBUG: Color.GREY,
logging.INFO: Color.CYAN,
logging.WARNING: Color.YELLOW,
logging.ERROR: Color.RED,
logging.CRITICAL: Color.MAGENTA,
}
COMPONENT_COLORS = {
"CLIENT": Color.BLUE,
"LLM": Color.GREEN,
"MCP": Color.YELLOW,
"TOOL": Color.MAGENTA,
"MEMORY": Color.CYAN,
"SYSTEM": Color.GREY,
"CONFIG": Color.GREEN,
}
def format(self, record: logging.LogRecord) -> str:
from datetime import datetime
level_color = self.LEVEL_COLORS.get(record.levelno, Color.RESET)
time_str = datetime.now().strftime("%H:%M:%S.%f")[:-3]
component = record.name.split(".")[-1].upper()
comp_color = self.COMPONENT_COLORS.get(component, Color.RESET)
return (
f"{Color.GREY}[{time_str}]{Color.RESET} "
f"{comp_color}{Color.BOLD}[{component:6s}]{Color.RESET} "
f"{level_color}{record.getMessage()}{Color.RESET}"
)
def get_logger(component: str, level: int | None = None) -> logging.Logger:
"""
获取指定组件的 Logger 实例,日志级别与文件路径从 settings 读取
Args:
component: 组件名称,如 "CLIENT""LLM""MCP"
level: 覆盖日志级别None 时从 settings 读取)
"""
# 延迟导入避免循环依赖settings 初始化时也会用到 logger
from config.settings import settings as cfg
if level is None:
level = getattr(logging, cfg.logging.level, logging.DEBUG)
logger = logging.getLogger(f"agent.{component}")
logger.setLevel(level)
if logger.handlers:
return logger
# 终端 Handler
console_handler = logging.StreamHandler(sys.stdout)
console_handler.setFormatter(ColorFormatter())
logger.addHandler(console_handler)
# 文件 Handler由配置控制开关
if cfg.logging.enable_file:
log_dir = Path(cfg.logging.log_dir)
log_dir.mkdir(parents=True, exist_ok=True)
file_handler = logging.FileHandler(
log_dir / cfg.logging.log_file, encoding="utf-8"
)
file_handler.setFormatter(
logging.Formatter("[%(asctime)s] [%(name)s] %(levelname)s: %(message)s")
)
logger.addHandler(file_handler)
logger.propagate = False
return logger