export enum LogLevel {
TRACE = 0,
DEBUG = 1,
INFO = 2,
WARN = 3,
ERROR = 4,
}
/**
* 敏感字段名称列表,这些字段的值应该被脱敏
*/
const SENSITIVE_FIELDS = [
'appSecret',
'app_secret',
'secret',
'accessToken',
'access_token',
'token',
'encodingAesKey',
'encoding_aes_key',
'password',
'apiKey',
'api_key',
];
/**
* 脱敏处理 - 隐藏敏感信息的中间部分
*/
function sanitizeValue(value: unknown): unknown {
if (typeof value === 'string') {
// 检查是否像 token 或 secret
if (value.length > 16) {
return `${value.substring(0, 8)}...${value.substring(value.length - 4)}`;
}
return '***';
}
if (typeof value === 'object' && value !== null) {
if (Array.isArray(value)) {
return value.map(sanitizeValue);
}
const sanitized: Record<string, unknown> = {};
for (const [key, val] of Object.entries(value)) {
// 检查键名是否为敏感字段
const isSensitive = SENSITIVE_FIELDS.some(field =>
key.toLowerCase().includes(field.toLowerCase())
);
sanitized[key] = isSensitive ? sanitizeValue(val) : sanitizeValue(val);
}
return sanitized;
}
return value;
}
class Logger {
private level: LogLevel = LogLevel.INFO;
setLevel(level: LogLevel) {
this.level = level;
}
private log(level: LogLevel, message: string, ...args: unknown[]) {
if (level >= this.level) {
const timestamp = new Date().toISOString();
const levelName = LogLevel[level];
// 脱敏所有参数
const sanitizedArgs = args.map(arg => sanitizeValue(arg));
console.log(`[${timestamp}] [${levelName}] ${message}`, ...sanitizedArgs);
}
}
trace(message: string, ...args: unknown[]) {
this.log(LogLevel.TRACE, message, ...args);
}
debug(message: string, ...args: unknown[]) {
this.log(LogLevel.DEBUG, message, ...args);
}
info(message: string, ...args: unknown[]) {
this.log(LogLevel.INFO, message, ...args);
}
warn(message: string, ...args: unknown[]) {
this.log(LogLevel.WARN, message, ...args);
}
error(message: string, ...args: unknown[]) {
this.log(LogLevel.ERROR, message, ...args);
}
}
export const logger = new Logger();
