falkordb-mcpserver/dist/errors/ErrorHandler.js

Model Context Protocol server for FalkorDB graph databases - enables AI assistants to query and manage graph data using natural language

import { AppError } from './AppError.js';
import { logger } from '../services/logger.service.js';
/**
 * Centralized error handler following Node.js best practices for MCP servers
 * Handles logging, monitoring, and determining crash behavior
 */
export class ErrorHandler {
    async handleError(err) {
        await this.logError(err);
        await this.determineIfOperationalError(err);
    }
    isTrustedError(error) {
        if (error instanceof AppError) {
            return error.isOperational;
        }
        return false;
    }
    async logError(err) {
        await logger.error('Unhandled error occurred', err, {
            timestamp: new Date().toISOString(),
            errorType: err.constructor.name
        });
    }
    async determineIfOperationalError(err) {
        if (this.isTrustedError(err)) {
            await logger.info('Operational error handled gracefully', {
                errorName: err.name,
                errorMessage: err.message
            });
        }
        else {
            await logger.error('Programmer error detected - may require process restart', err, {
                recommendation: 'Review code for bugs',
                severity: 'critical'
            });
        }
    }
    crashIfUntrustedError(error) {
        if (!this.isTrustedError(error)) {
            logger.errorSync('Crashing process due to untrusted error', error);
            process.exit(1);
        }
    }
}
// Export singleton instance
export const errorHandler = new ErrorHandler();