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error.util.ts7.93 kB
import { Logger } from './logger.util.js'; import { formatSeparator } from './formatter.util.js'; /** * Error types for classification */ export enum ErrorType { AUTH_MISSING = 'AUTH_MISSING', AUTH_INVALID = 'AUTH_INVALID', API_ERROR = 'API_ERROR', NOT_FOUND = 'NOT_FOUND', UNEXPECTED_ERROR = 'UNEXPECTED_ERROR', } /** * Custom error class with type classification */ export class McpError extends Error { type: ErrorType; statusCode?: number; originalError?: unknown; constructor( message: string, type: ErrorType, statusCode?: number, originalError?: unknown, ) { super(message); this.name = 'McpError'; this.type = type; this.statusCode = statusCode; this.originalError = originalError; } } /** * Helper to unwrap nested McpErrors and return the deepest original error. * This is useful when an McpError contains another McpError as `originalError` * which in turn may wrap the vendor (Confluence) error text or object. */ export function getDeepOriginalError(error: unknown): unknown { if (!error) { return error; } let current = error; let depth = 0; const maxDepth = 10; // Prevent infinite recursion while ( depth < maxDepth && current instanceof Error && 'originalError' in current && current.originalError ) { current = current.originalError; depth++; } return current; } /** * Create an authentication missing error */ export function createAuthMissingError( message: string = 'Authentication credentials are missing', originalError?: unknown, ): McpError { return new McpError( message, ErrorType.AUTH_MISSING, undefined, originalError, ); } /** * Create an authentication invalid error */ export function createAuthInvalidError( message: string = 'Authentication credentials are invalid', originalError?: unknown, ): McpError { return new McpError(message, ErrorType.AUTH_INVALID, 401, originalError); } /** * Create an API error */ export function createApiError( message: string, statusCode?: number, originalError?: unknown, ): McpError { return new McpError( message, ErrorType.API_ERROR, statusCode, originalError, ); } /** * Create a not found error */ export function createNotFoundError( message: string = 'Resource not found', originalError?: unknown, ): McpError { return new McpError(message, ErrorType.NOT_FOUND, 404, originalError); } /** * Create an unexpected error */ export function createUnexpectedError( message: string = 'An unexpected error occurred', originalError?: unknown, ): McpError { return new McpError( message, ErrorType.UNEXPECTED_ERROR, undefined, originalError, ); } /** * Ensure an error is an McpError */ export function ensureMcpError(error: unknown): McpError { if (error instanceof McpError) { return error; } if (error instanceof Error) { return createUnexpectedError(error.message, error); } return createUnexpectedError(String(error)); } /** * Format error for MCP tool response */ export function formatErrorForMcpTool(error: unknown): { content: Array<{ type: 'text'; text: string }>; metadata?: { errorType: ErrorType; statusCode?: number; errorDetails?: unknown; }; } { const methodLogger = Logger.forContext( 'utils/error.util.ts', 'formatErrorForMcpTool', ); const mcpError = ensureMcpError(error); methodLogger.error(`${mcpError.type} error`, mcpError); // Get the deep original error for additional context const originalError = getDeepOriginalError(mcpError.originalError); // Safely extract details from the original error const errorDetails = originalError instanceof Error ? { message: originalError.message } : originalError; return { content: [ { type: 'text' as const, text: `Error: ${mcpError.message}`, }, ], metadata: { errorType: mcpError.type, statusCode: mcpError.statusCode, errorDetails, }, }; } /** * Format error for MCP resource response */ export function formatErrorForMcpResource( error: unknown, uri: string, ): { contents: Array<{ uri: string; text: string; mimeType: string; description?: string; }>; } { const methodLogger = Logger.forContext( 'utils/error.util.ts', 'formatErrorForMcpResource', ); const mcpError = ensureMcpError(error); methodLogger.error(`${mcpError.type} error`, mcpError); return { contents: [ { uri, text: `Error: ${mcpError.message}`, mimeType: 'text/plain', description: `Error: ${mcpError.type}`, }, ], }; } /** * Handle error in CLI context with improved user feedback */ export function handleCliError(error: unknown): never { const methodLogger = Logger.forContext( 'utils/error.util.ts', 'handleCliError', ); const mcpError = ensureMcpError(error); methodLogger.error(`${mcpError.type} error`, mcpError); // Get the deep original error for more context const originalError = getDeepOriginalError(mcpError.originalError); // Build a well-formatted CLI output using markdown-style helpers const cliLines: string[] = []; // Primary error headline cliLines.push(`❌ ${mcpError.message}`); // Status code (if any) if (mcpError.statusCode) { cliLines.push(`HTTP Status: ${mcpError.statusCode}`); } // Separator cliLines.push(formatSeparator()); // Provide helpful context based on error type if (mcpError.type === ErrorType.AUTH_MISSING) { cliLines.push( 'Tip: Make sure to set up your Atlassian credentials in the configuration file or environment variables:', ); cliLines.push( '- ATLASSIAN_SITE_NAME, ATLASSIAN_USER_EMAIL, and ATLASSIAN_API_TOKEN', ); } else if (mcpError.type === ErrorType.AUTH_INVALID) { cliLines.push( 'Tip: Check that your Atlassian API token is correct and has not expired.', ); cliLines.push( 'Also verify that the configured user has access to the requested resource.', ); } else if (mcpError.type === ErrorType.API_ERROR) { if (mcpError.statusCode === 429) { cliLines.push( 'Tip: You may have exceeded your Confluence API rate limits. Try again later.', ); } } else if (mcpError.type === ErrorType.NOT_FOUND) { cliLines.push( 'Tip: Verify the resource ID or key is correct and that you have access to view this resource.', ); cliLines.push( 'If you are using a space key, make sure it is spelled correctly (including case).', ); } // Vendor error details (if available) if (originalError) { cliLines.push('Confluence API Error:'); cliLines.push('```'); if (typeof originalError === 'object' && originalError !== null) { // Try to extract the most useful parts of Confluence's error response const origErr = originalError as Record<string, unknown>; if (origErr.message) { cliLines.push(`Message: ${origErr.message}`); } if (origErr.detail) { cliLines.push(`Detail: ${origErr.detail}`); } if (origErr.title) { cliLines.push(`Title: ${origErr.title}`); } if (origErr.status) { cliLines.push(`Status: ${origErr.status}`); } // Handle errors array format if ( origErr.errors && Array.isArray(origErr.errors) && origErr.errors.length > 0 ) { cliLines.push('Errors:'); for (const err of origErr.errors) { if (typeof err === 'object' && err !== null) { const errObj = err as Record<string, unknown>; cliLines.push( ` - ${errObj.message || errObj.title || JSON.stringify(err)}`, ); } else { cliLines.push(` - ${String(err)}`); } } } else { // Fall back to JSON representation for anything else cliLines.push(JSON.stringify(originalError, null, 2)); } } else { cliLines.push(String(originalError).trim()); } cliLines.push('```'); } // Display DEBUG tip if (!process.env.DEBUG || !process.env.DEBUG.includes('mcp:')) { cliLines.push( 'For more detailed error information, run with DEBUG=mcp:* environment variable.', ); } console.error(cliLines.join('\n')); process.exit(1); }

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