error-handler.util.tsā¢9.81 kB
import { createApiError } from './error.util.js';
import { Logger } from './logger.util.js';
/**
* Standard error codes for consistent handling
*/
export enum ErrorCode {
NOT_FOUND = 'NOT_FOUND',
INVALID_CURSOR = 'INVALID_CURSOR',
ACCESS_DENIED = 'ACCESS_DENIED',
VALIDATION_ERROR = 'VALIDATION_ERROR',
UNEXPECTED_ERROR = 'UNEXPECTED_ERROR',
NETWORK_ERROR = 'NETWORK_ERROR',
RATE_LIMIT_ERROR = 'RATE_LIMIT_ERROR',
PRIVATE_IP_ERROR = 'PRIVATE_IP_ERROR',
RESERVED_RANGE_ERROR = 'RESERVED_RANGE_ERROR',
}
/**
* Context information for error handling
*/
export interface ErrorContext {
/**
* Source of the error (e.g., file path and function)
*/
source?: string;
/**
* Type of entity being processed (e.g., 'IP Address', 'User')
*/
entityType?: string;
/**
* Identifier of the entity being processed
*/
entityId?: string | Record<string, string>;
/**
* Operation being performed (e.g., 'retrieving', 'searching')
*/
operation?: string;
/**
* Additional information for debugging
*/
additionalInfo?: Record<string, unknown>;
}
/**
* Helper function to create a consistent error context object
* @param entityType Type of entity being processed
* @param operation Operation being performed
* @param source Source of the error (typically file path and function)
* @param entityId Optional identifier of the entity
* @param additionalInfo Optional additional information for debugging
* @returns A formatted ErrorContext object
*/
export function buildErrorContext(
entityType: string,
operation: string,
source: string,
entityId?: string | Record<string, string>,
additionalInfo?: Record<string, unknown>,
): ErrorContext {
return {
entityType,
operation,
source,
...(entityId && { entityId }),
...(additionalInfo && { additionalInfo }),
};
}
/**
* Detect specific error types from raw errors
* @param error The error to analyze
* @param context Context information for better error detection
* @returns Object containing the error code and status code
*/
export function detectErrorType(
error: unknown,
context: ErrorContext = {},
): { code: ErrorCode; statusCode: number } {
const methodLogger = Logger.forContext(
'utils/error-handler.util.ts',
'detectErrorType',
);
methodLogger.debug(`Detecting error type`, { error, context });
const errorMessage = error instanceof Error ? error.message : String(error);
const statusCode =
error instanceof Error && 'statusCode' in error
? (error as { statusCode: number }).statusCode
: undefined;
// Network error detection
if (
errorMessage.includes('network error') ||
errorMessage.includes('fetch failed') ||
errorMessage.includes('ECONNREFUSED') ||
errorMessage.includes('ENOTFOUND') ||
errorMessage.includes('Failed to fetch') ||
errorMessage.includes('Network request failed')
) {
return { code: ErrorCode.NETWORK_ERROR, statusCode: 500 };
}
// Rate limiting detection
if (
errorMessage.includes('rate limit') ||
errorMessage.includes('too many requests') ||
statusCode === 429
) {
return { code: ErrorCode.RATE_LIMIT_ERROR, statusCode: 429 };
}
// API specific error detection
if (
errorMessage.includes('private range') ||
errorMessage.includes('private IP')
) {
return { code: ErrorCode.PRIVATE_IP_ERROR, statusCode: 400 };
}
if (errorMessage.includes('reserved range')) {
return { code: ErrorCode.RESERVED_RANGE_ERROR, statusCode: 400 };
}
// Check for API status="fail" in originalError
if (
error instanceof Error &&
'originalError' in error &&
error.originalError &&
typeof error.originalError === 'object'
) {
const originalError = error.originalError as Record<string, unknown>;
if (originalError.status === 'fail') {
const apiMessage = originalError.message
? String(originalError.message)
: '';
if (apiMessage.includes('private')) {
return { code: ErrorCode.PRIVATE_IP_ERROR, statusCode: 400 };
}
if (apiMessage.includes('reserved')) {
return {
code: ErrorCode.RESERVED_RANGE_ERROR,
statusCode: 400,
};
}
return { code: ErrorCode.VALIDATION_ERROR, statusCode: 400 };
}
}
// Not Found detection
if (
errorMessage.includes('not found') ||
errorMessage.includes('does not exist') ||
statusCode === 404
) {
return { code: ErrorCode.NOT_FOUND, statusCode: 404 };
}
// Access Denied detection
if (
errorMessage.includes('access') ||
errorMessage.includes('permission') ||
errorMessage.includes('authorize') ||
errorMessage.includes('authentication') ||
statusCode === 401 ||
statusCode === 403
) {
return { code: ErrorCode.ACCESS_DENIED, statusCode: statusCode || 403 };
}
// Invalid Cursor detection
if (
(errorMessage.includes('cursor') ||
errorMessage.includes('startAt') ||
errorMessage.includes('page')) &&
(errorMessage.includes('invalid') || errorMessage.includes('not valid'))
) {
return { code: ErrorCode.INVALID_CURSOR, statusCode: 400 };
}
// Validation Error detection
if (
errorMessage.includes('validation') ||
errorMessage.includes('invalid') ||
errorMessage.includes('required') ||
statusCode === 400 ||
statusCode === 422
) {
return {
code: ErrorCode.VALIDATION_ERROR,
statusCode: statusCode || 400,
};
}
// Default to unexpected error
return {
code: ErrorCode.UNEXPECTED_ERROR,
statusCode: statusCode || 500,
};
}
/**
* Create user-friendly error messages based on error type and context
* @param code The error code
* @param context Context information for better error messages
* @param originalMessage The original error message
* @returns User-friendly error message
*/
export function createUserFriendlyErrorMessage(
code: ErrorCode,
context: ErrorContext = {},
originalMessage?: string,
): string {
const methodLogger = Logger.forContext(
'utils/error-handler.util.ts',
'createUserFriendlyErrorMessage',
);
const { entityType, entityId, operation } = context;
// Format entity ID for display
let entityIdStr = '';
if (entityId) {
if (typeof entityId === 'string') {
entityIdStr = entityId;
} else {
// Handle object entityId
entityIdStr = Object.values(entityId).join('/');
}
}
// Determine entity display name
const entity = entityType
? `${entityType}${entityIdStr ? ` ${entityIdStr}` : ''}`
: 'Resource';
let message = '';
switch (code) {
case ErrorCode.NOT_FOUND:
message = `${entity} not found${entityIdStr ? `: ${entityIdStr}` : ''}. Verify the ID is correct and that you have access to this ${entityType?.toLowerCase() || 'resource'}.`;
break;
case ErrorCode.ACCESS_DENIED:
message = `Access denied for ${entity.toLowerCase()}${entityIdStr ? ` ${entityIdStr}` : ''}. Verify your credentials and permissions.`;
break;
case ErrorCode.INVALID_CURSOR:
message = `Invalid pagination cursor. Use the exact cursor string returned from previous results.`;
break;
case ErrorCode.VALIDATION_ERROR:
message =
originalMessage ||
`Invalid data provided for ${operation || 'operation'} ${entity.toLowerCase()}.`;
break;
case ErrorCode.NETWORK_ERROR:
message = `Network error while ${operation || 'connecting to'} the service. Please check your internet connection and try again.`;
break;
case ErrorCode.RATE_LIMIT_ERROR:
message = `Rate limit exceeded. Please wait a moment and try again, or reduce the frequency of requests.`;
break;
case ErrorCode.PRIVATE_IP_ERROR:
message = `Private IP addresses are not supported. Please provide a public IP address.`;
break;
case ErrorCode.RESERVED_RANGE_ERROR:
message = `Reserved range IP addresses are not supported. Please provide a public IP address.`;
break;
default:
message = `An unexpected error occurred while ${operation || 'processing'} ${entity.toLowerCase()}.`;
}
// Include original message details if available and appropriate
if (
originalMessage &&
code !== ErrorCode.NOT_FOUND &&
code !== ErrorCode.ACCESS_DENIED
) {
message += ` Error details: ${originalMessage}`;
}
methodLogger.debug(`Created user-friendly message: ${message}`, {
code,
context,
});
return message;
}
/**
* Handle controller errors consistently
* @param error The error to handle
* @param context Context information for better error messages
* @returns Never returns, always throws an error
*/
export function handleControllerError(
error: unknown,
context: ErrorContext = {},
): never {
const methodLogger = Logger.forContext(
'utils/error-handler.util.ts',
'handleControllerError',
);
// Extract error details
const errorMessage = error instanceof Error ? error.message : String(error);
const statusCode =
error instanceof Error && 'statusCode' in error
? (error as { statusCode: number }).statusCode
: undefined;
// Detect error type using utility
const { code, statusCode: detectedStatus } = detectErrorType(
error,
context,
);
// Combine detected status with explicit status
const finalStatusCode = statusCode || detectedStatus;
// Format entity information for logging
const { entityType, entityId, operation } = context;
const entity = entityType || 'resource';
const entityIdStr = entityId
? typeof entityId === 'string'
? entityId
: JSON.stringify(entityId)
: '';
const actionStr = operation || 'processing';
// Log detailed error information
methodLogger.error(
`Error ${actionStr} ${entity}${
entityIdStr ? `: ${entityIdStr}` : ''
}: ${errorMessage}`,
error,
);
// Create user-friendly error message for the response
const message =
code === ErrorCode.VALIDATION_ERROR
? errorMessage
: createUserFriendlyErrorMessage(code, context, errorMessage);
// Throw an appropriate API error with the user-friendly message
throw createApiError(message, finalStatusCode, error);
}