/**
* 基础应用错误类
*/
export class AppError extends Error {
public readonly code: string;
public readonly statusCode: number;
public readonly timestamp: string;
public readonly isOperational: boolean;
constructor(
code: string,
message: string,
statusCode: number = 500,
isOperational: boolean = true
) {
super(message);
this.name = this.constructor.name;
this.code = code;
this.statusCode = statusCode;
this.timestamp = new Date().toISOString();
this.isOperational = isOperational;
Error.captureStackTrace(this, this.constructor);
}
}
/**
* 验证错误
*/
export class ValidationError extends AppError {
public readonly field?: string;
constructor(message: string, field?: string) {
super('VALIDATION_ERROR', message, 400);
this.field = field;
}
}
/**
* 认证错误
*/
export class AuthenticationError extends AppError {
constructor(message: string = '认证失败') {
super('AUTHENTICATION_ERROR', message, 401);
}
}
/**
* 授权错误
*/
export class AuthorizationError extends AppError {
constructor(message: string = '无权限访问') {
super('AUTHORIZATION_ERROR', message, 403);
}
}
/**
* 资源未找到错误
*/
export class NotFoundError extends AppError {
constructor(resource: string = '资源') {
super('NOT_FOUND', `${resource}不存在`, 404);
}
}
/**
* 配额不足错误
*/
export class QuotaExceededError extends AppError {
constructor(message: string = '配额不足') {
super('QUOTA_EXCEEDED', message, 429);
}
}
/**
* 数据库错误
*/
export class DatabaseError extends AppError {
constructor(message: string, originalError?: Error) {
super('DATABASE_ERROR', message, 500, false);
if (originalError) {
this.stack = originalError.stack;
}
}
}
/**
* 外部服务错误
*/
export class ExternalServiceError extends AppError {
public readonly serviceName: string;
constructor(serviceName: string, message: string) {
super('EXTERNAL_SERVICE_ERROR', `${serviceName}服务错误: ${message}`, 503);
this.serviceName = serviceName;
}
}
