/**
* Logging utility for NIST CSF GUI Backend
*
* QUALITY STANDARDS ENFORCED:
* - All exports used by application modules
* - Structured logging for debugging and monitoring
* - Performance optimized
*/
import winston from 'winston';
import path from 'path';
// Log levels for different environments
const levels = {
error: 0,
warn: 1,
info: 2,
debug: 3,
};
// Console colors for development
const colors = {
error: 'red',
warn: 'yellow',
info: 'green',
debug: 'blue',
};
winston.addColors(colors);
// Create logger instance
export const logger = winston.createLogger({
level: process.env.LOG_LEVEL || 'info',
levels,
format: winston.format.combine(
winston.format.timestamp(),
winston.format.errors({ stack: true }),
winston.format.json()
),
transports: [
// Console transport for development
new winston.transports.Console({
format: winston.format.combine(
winston.format.colorize(),
winston.format.simple(),
winston.format.printf(({ timestamp, level, message, ...meta }) => {
let msg = `${timestamp} [GUI-BACKEND] [${level}]: ${message}`;
if (Object.keys(meta).length > 0) {
msg += ` ${JSON.stringify(meta)}`;
}
return msg;
})
)
}),
// File transports for production
new winston.transports.File({
filename: path.join(process.cwd(), 'logs/error.log'),
level: 'error',
maxsize: 5242880, // 5MB
maxFiles: 10
}),
new winston.transports.File({
filename: path.join(process.cwd(), 'logs/combined.log'),
maxsize: 10485760, // 10MB
maxFiles: 20
})
],
exitOnError: false
});
// Ensure logs directory exists
import { mkdirSync } from 'fs';
try {
mkdirSync(path.join(process.cwd(), 'logs'), { recursive: true });
} catch (error) {
// Directory might already exist
}
export default logger;
