/**
* Logger utility for MCP Gateway
*/
import winston from 'winston';
const { combine, timestamp, printf, colorize, errors } = winston.format;
const logFormat = printf(({ level, message, timestamp, stack, ...meta }) => {
let log = `${timestamp} [${level}]: ${message}`;
if (Object.keys(meta).length > 0) {
log += ` ${JSON.stringify(meta)}`;
}
if (stack) {
log += `\n${stack}`;
}
return log;
});
export function createLogger(level: string = 'info'): winston.Logger {
return winston.createLogger({
level,
format: combine(
errors({ stack: true }),
timestamp({ format: 'YYYY-MM-DD HH:mm:ss' }),
colorize(),
logFormat
),
transports: [
new winston.transports.Console(),
],
exceptionHandlers: [
new winston.transports.Console(),
],
rejectionHandlers: [
new winston.transports.Console(),
],
});
}
// Default logger instance
export const logger = createLogger(process.env.LOG_LEVEL ?? 'info');
