# Copyright 2025. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
import os
from logging.handlers import RotatingFileHandler
from pathlib import Path
from dotenv import load_dotenv
load_dotenv()
def setup_logger(name: str) -> logging.Logger:
"""
Sets up logger to be used by every method in the application.
Args:
name: name of the logger (__name__)
Returns:
Configured logger object
"""
logger = logging.getLogger(name)
if logger.hasHandlers():
return logger
# Defaults
default_log_level_str = "INFO"
default_log_filename = "si_mcp_server.log"
default_log_file_path = Path(default_log_filename)
# Fetch log level and path from .env
log_level_str = os.getenv("LOG_LEVEL", default_log_level_str).strip().upper()
log_dir_raw = os.getenv("LOG_FILE_PATH", "").strip()
# Convert to logging constant
log_level = getattr(logging, log_level_str, logging.INFO)
logger.setLevel(log_level)
formatter = logging.Formatter(
"%(asctime)s - %(name)s - %(levelname)s - %(funcName)s - %(message)s"
)
# Resolve log file path
try:
if log_dir_raw:
log_dir = Path(log_dir_raw)
log_dir.mkdir(parents=True, exist_ok=True)
log_file_path = log_dir / default_log_filename
else:
log_file_path = default_log_file_path
except Exception as e:
# Falling back to default if invalid log dir
log_file_path = default_log_file_path
try:
file_handler = RotatingFileHandler(
log_file_path, maxBytes=10 * 1024 * 1024, backupCount=5
)
except PermissionError as e:
file_handler = RotatingFileHandler(
default_log_file_path, maxBytes=10 * 1024 * 1024, backupCount=5
)
file_handler.setFormatter(formatter)
file_handler.setLevel(log_level)
# Console Handler
console_handler = logging.StreamHandler()
console_handler.setFormatter(formatter)
console_handler.setLevel(log_level)
logger.addHandler(file_handler)
logger.addHandler(console_handler)
return logger
