geoapify-mcp-server/src/utils/logger.js

Geoapify API MCP Server for location-based services - 一键部署的地理位置服务

const winston = require('winston');

const { combine, timestamp, errors, json, printf, colorize } = winston.format;

// 自定义日志格式
const customFormat = printf(({ level, message, timestamp, ...meta }) => {
  let log = `${timestamp} [${level}]: ${message}`;
  
  if (Object.keys(meta).length > 0) {
    log += ` ${JSON.stringify(meta)}`;
  }
  
  return log;
});

// 创建logger实例
const logger = winston.createLogger({
  level: process.env.LOG_LEVEL || 'info',
  format: combine(
    timestamp({ format: 'YYYY-MM-DD HH:mm:ss' }),
    errors({ stack: true }),
    json()
  ),
  defaultMeta: { service: 'geoapify-mcp-server' },
  transports: [
    // 错误日志文件
    new winston.transports.File({
      filename: 'logs/error.log',
      level: 'error',
      maxsize: 5242880, // 5MB
      maxFiles: 5,
    }),
    // 所有日志文件
    new winston.transports.File({
      filename: 'logs/combined.log',
      maxsize: 5242880, // 5MB
      maxFiles: 5,
    }),
  ],
});

// 开发环境添加控制台输出
if (process.env.NODE_ENV !== 'production') {
  logger.add(new winston.transports.Console({
    format: combine(
      colorize(),
      timestamp({ format: 'HH:mm:ss' }),
      customFormat
    )
  }));
}

// 生产环境错误处理
if (process.env.NODE_ENV === 'production') {
  logger.exceptions.handle(
    new winston.transports.File({ filename: 'logs/exceptions.log' })
  );
  
  logger.rejections.handle(
    new winston.transports.File({ filename: 'logs/rejections.log' })
  );
}

module.exports = { logger };
module.exports.default = logger;