llmverify
Version:
AI Output Verification Toolkit — Local-first LLM safety, hallucination detection, PII redaction, prompt injection defense, and runtime monitoring. Zero telemetry. OWASP LLM Top 10 aligned.
386 lines • 37.9 kB
JavaScript
"use strict";
/**
* Structured Logging System
*
* Industry-grade logging with rotation, request tracking, and audit trails
*
* @module logging/logger
*/
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.Logger = exports.LogLevel = void 0;
exports.getLogger = getLogger;
exports.setLogger = setLogger;
exports.resetLogger = resetLogger;
const fs = __importStar(require("fs"));
const path = __importStar(require("path"));
const os = __importStar(require("os"));
const uuid_1 = require("uuid");
/**
* Log levels
*/
var LogLevel;
(function (LogLevel) {
LogLevel["DEBUG"] = "debug";
LogLevel["INFO"] = "info";
LogLevel["WARN"] = "warn";
LogLevel["ERROR"] = "error";
})(LogLevel || (exports.LogLevel = LogLevel = {}));
/**
* Default configuration
*/
const DEFAULT_CONFIG = {
enabled: true,
level: LogLevel.INFO,
logDir: path.join(os.homedir(), '.llmverify', 'logs'),
maxFileSize: 10 * 1024 * 1024, // 10MB
maxFiles: 10,
includeMetadata: true,
sanitizePII: true
};
/**
* Logger class
*/
class Logger {
constructor(config) {
this.currentRequestId = null;
this.requestStartTime = null;
this.config = { ...DEFAULT_CONFIG, ...config };
this.ensureLogDirectory();
}
/**
* Ensure log directory exists
*/
ensureLogDirectory() {
if (this.config.enabled && this.config.logDir) {
try {
fs.mkdirSync(this.config.logDir, { recursive: true });
}
catch (error) {
console.error('Failed to create log directory:', error);
this.config.enabled = false;
}
}
}
/**
* Generate new request ID
*/
startRequest() {
this.currentRequestId = (0, uuid_1.v4)();
this.requestStartTime = Date.now();
return this.currentRequestId;
}
/**
* End request and return duration
*/
endRequest() {
if (this.requestStartTime) {
const duration = Date.now() - this.requestStartTime;
this.requestStartTime = null;
return duration;
}
return null;
}
/**
* Get current request ID
*/
getRequestId() {
if (!this.currentRequestId) {
this.currentRequestId = (0, uuid_1.v4)();
}
return this.currentRequestId;
}
/**
* Get log file path for today
*/
getLogFilePath() {
const date = new Date().toISOString().split('T')[0];
return path.join(this.config.logDir, `llmverify-${date}.jsonl`);
}
/**
* Sanitize data to remove PII
*/
sanitizeData(data) {
if (!this.config.sanitizePII)
return data;
if (typeof data === 'string') {
// Remove email addresses
data = data.replace(/[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}/g, '[EMAIL]');
// Remove phone numbers
data = data.replace(/\b\d{3}[-.]?\d{3}[-.]?\d{4}\b/g, '[PHONE]');
// Remove SSN
data = data.replace(/\b\d{3}-\d{2}-\d{4}\b/g, '[SSN]');
// Remove API keys (common patterns)
data = data.replace(/\b[A-Za-z0-9]{32,}\b/g, '[API_KEY]');
}
else if (typeof data === 'object' && data !== null) {
const sanitized = Array.isArray(data) ? [] : {};
for (const key in data) {
// Skip sensitive keys
if (['password', 'apiKey', 'token', 'secret', 'authorization'].includes(key.toLowerCase())) {
sanitized[key] = '[REDACTED]';
}
else {
sanitized[key] = this.sanitizeData(data[key]);
}
}
return sanitized;
}
return data;
}
/**
* Write log entry
*/
writeLog(entry) {
if (!this.config.enabled)
return;
try {
const logFile = this.getLogFilePath();
const line = JSON.stringify(entry) + '\n';
fs.appendFileSync(logFile, line, 'utf-8');
// Check file size and rotate if needed
this.rotateLogsIfNeeded(logFile);
}
catch (error) {
// Fail silently to not disrupt main operation
if (process.env.NODE_ENV === 'development') {
console.error('Failed to write log:', error);
}
}
}
/**
* Rotate logs if file exceeds max size
*/
rotateLogsIfNeeded(logFile) {
try {
const stats = fs.statSync(logFile);
if (stats.size > this.config.maxFileSize) {
const timestamp = Date.now();
const rotatedFile = logFile.replace('.jsonl', `.${timestamp}.jsonl`);
fs.renameSync(logFile, rotatedFile);
// Clean up old files
this.cleanupOldLogs();
}
}
catch (error) {
// Ignore rotation errors
}
}
/**
* Clean up old log files
*/
cleanupOldLogs() {
if (!this.config.logDir)
return;
try {
const files = fs.readdirSync(this.config.logDir)
.filter(f => f.startsWith('llmverify-') && f.endsWith('.jsonl'))
.map(f => ({
name: f,
path: path.join(this.config.logDir, f),
time: fs.statSync(path.join(this.config.logDir, f)).mtime.getTime()
}))
.sort((a, b) => b.time - a.time);
// Keep only maxFiles
if (files.length > this.config.maxFiles) {
files.slice(this.config.maxFiles).forEach(file => {
try {
fs.unlinkSync(file.path);
}
catch (error) {
// Ignore deletion errors
}
});
}
}
catch (error) {
// Ignore cleanup errors
}
}
/**
* Create log entry
*/
createEntry(level, message, data, error) {
const entry = {
timestamp: new Date().toISOString(),
level,
requestId: this.getRequestId(),
message: this.config.sanitizePII ? this.sanitizeData(message) : message
};
if (data) {
entry.data = this.sanitizeData(data);
}
if (this.requestStartTime) {
entry.duration = Date.now() - this.requestStartTime;
}
if (error) {
entry.error = {
message: error.message,
code: error.code,
stack: process.env.NODE_ENV === 'development' ? error.stack : undefined
};
}
if (this.config.includeMetadata) {
entry.metadata = {
version: require('../../package.json').version,
pid: process.pid,
hostname: os.hostname()
};
}
return entry;
}
/**
* Check if should log at level
*/
shouldLog(level) {
const levels = [LogLevel.DEBUG, LogLevel.INFO, LogLevel.WARN, LogLevel.ERROR];
const configLevelIndex = levels.indexOf(this.config.level);
const messageLevelIndex = levels.indexOf(level);
return messageLevelIndex >= configLevelIndex;
}
/**
* Log debug message
*/
debug(message, data) {
if (this.shouldLog(LogLevel.DEBUG)) {
this.writeLog(this.createEntry(LogLevel.DEBUG, message, data));
}
}
/**
* Log info message
*/
info(message, data) {
if (this.shouldLog(LogLevel.INFO)) {
this.writeLog(this.createEntry(LogLevel.INFO, message, data));
}
}
/**
* Log warning message
*/
warn(message, data) {
if (this.shouldLog(LogLevel.WARN)) {
this.writeLog(this.createEntry(LogLevel.WARN, message, data));
}
}
/**
* Log error message
*/
error(message, error, data) {
if (this.shouldLog(LogLevel.ERROR)) {
this.writeLog(this.createEntry(LogLevel.ERROR, message, data, error));
}
}
/**
* Read logs for a specific date
*/
readLogs(date) {
if (!this.config.logDir)
return [];
const dateStr = date || new Date().toISOString().split('T')[0];
const logFile = path.join(this.config.logDir, `llmverify-${dateStr}.jsonl`);
if (!fs.existsSync(logFile))
return [];
try {
const content = fs.readFileSync(logFile, 'utf-8');
return content
.split('\n')
.filter(line => line.trim())
.map(line => JSON.parse(line));
}
catch (error) {
console.error('Failed to read logs:', error);
return [];
}
}
/**
* Get log statistics
*/
getStats(date) {
const logs = this.readLogs(date);
const stats = {
totalEntries: logs.length,
byLevel: {
[LogLevel.DEBUG]: 0,
[LogLevel.INFO]: 0,
[LogLevel.WARN]: 0,
[LogLevel.ERROR]: 0
},
errorCount: 0,
avgDuration: 0
};
let totalDuration = 0;
let durationCount = 0;
logs.forEach(log => {
stats.byLevel[log.level]++;
if (log.error)
stats.errorCount++;
if (log.duration) {
totalDuration += log.duration;
durationCount++;
}
});
if (durationCount > 0) {
stats.avgDuration = totalDuration / durationCount;
}
return stats;
}
}
exports.Logger = Logger;
/**
* Global logger instance
*/
let globalLogger = null;
/**
* Get global logger
*/
function getLogger(config) {
if (!globalLogger) {
globalLogger = new Logger(config);
}
return globalLogger;
}
/**
* Set global logger
*/
function setLogger(logger) {
globalLogger = logger;
}
/**
* Reset global logger
*/
function resetLogger() {
globalLogger = null;
}
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* Structured Logging System\n * \n * Industry-grade logging with rotation, request tracking, and audit trails\n * \n * @module logging/logger\n */\n\nimport * as fs from 'fs';\nimport * as path from 'path';\nimport * as os from 'os';\nimport { v4 as uuidv4 } from 'uuid';\nimport { ErrorCode } from '../errors/codes';\n\n/**\n * Log levels\n */\nexport enum LogLevel {\n  DEBUG = 'debug',\n  INFO = 'info',\n  WARN = 'warn',\n  ERROR = 'error'\n}\n\n/**\n * Log entry structure\n */\nexport interface LogEntry {\n  timestamp: string;\n  level: LogLevel;\n  requestId: string;\n  message: string;\n  data?: any;\n  duration?: number;\n  error?: {\n    message: string;\n    code?: ErrorCode;\n    stack?: string;\n  };\n  metadata?: {\n    version: string;\n    pid: number;\n    hostname: string;\n  };\n}\n\n/**\n * Logger configuration\n */\nexport interface LoggerConfig {\n  enabled: boolean;\n  level: LogLevel;\n  logDir?: string;\n  maxFileSize?: number; // bytes\n  maxFiles?: number;\n  includeMetadata?: boolean;\n  sanitizePII?: boolean;\n}\n\n/**\n * Default configuration\n */\nconst DEFAULT_CONFIG: LoggerConfig = {\n  enabled: true,\n  level: LogLevel.INFO,\n  logDir: path.join(os.homedir(), '.llmverify', 'logs'),\n  maxFileSize: 10 * 1024 * 1024, // 10MB\n  maxFiles: 10,\n  includeMetadata: true,\n  sanitizePII: true\n};\n\n/**\n * Logger class\n */\nexport class Logger {\n  private config: LoggerConfig;\n  private currentRequestId: string | null = null;\n  private requestStartTime: number | null = null;\n  \n  constructor(config?: Partial<LoggerConfig>) {\n    this.config = { ...DEFAULT_CONFIG, ...config };\n    this.ensureLogDirectory();\n  }\n  \n  /**\n   * Ensure log directory exists\n   */\n  private ensureLogDirectory(): void {\n    if (this.config.enabled && this.config.logDir) {\n      try {\n        fs.mkdirSync(this.config.logDir, { recursive: true });\n      } catch (error) {\n        console.error('Failed to create log directory:', error);\n        this.config.enabled = false;\n      }\n    }\n  }\n  \n  /**\n   * Generate new request ID\n   */\n  public startRequest(): string {\n    this.currentRequestId = uuidv4();\n    this.requestStartTime = Date.now();\n    return this.currentRequestId;\n  }\n  \n  /**\n   * End request and return duration\n   */\n  public endRequest(): number | null {\n    if (this.requestStartTime) {\n      const duration = Date.now() - this.requestStartTime;\n      this.requestStartTime = null;\n      return duration;\n    }\n    return null;\n  }\n  \n  /**\n   * Get current request ID\n   */\n  public getRequestId(): string {\n    if (!this.currentRequestId) {\n      this.currentRequestId = uuidv4();\n    }\n    return this.currentRequestId;\n  }\n  \n  /**\n   * Get log file path for today\n   */\n  private getLogFilePath(): string {\n    const date = new Date().toISOString().split('T')[0];\n    return path.join(this.config.logDir!, `llmverify-${date}.jsonl`);\n  }\n  \n  /**\n   * Sanitize data to remove PII\n   */\n  private sanitizeData(data: any): any {\n    if (!this.config.sanitizePII) return data;\n    \n    if (typeof data === 'string') {\n      // Remove email addresses\n      data = data.replace(/[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\\.[a-zA-Z]{2,}/g, '[EMAIL]');\n      // Remove phone numbers\n      data = data.replace(/\\b\\d{3}[-.]?\\d{3}[-.]?\\d{4}\\b/g, '[PHONE]');\n      // Remove SSN\n      data = data.replace(/\\b\\d{3}-\\d{2}-\\d{4}\\b/g, '[SSN]');\n      // Remove API keys (common patterns)\n      data = data.replace(/\\b[A-Za-z0-9]{32,}\\b/g, '[API_KEY]');\n    } else if (typeof data === 'object' && data !== null) {\n      const sanitized: any = Array.isArray(data) ? [] : {};\n      for (const key in data) {\n        // Skip sensitive keys\n        if (['password', 'apiKey', 'token', 'secret', 'authorization'].includes(key.toLowerCase())) {\n          sanitized[key] = '[REDACTED]';\n        } else {\n          sanitized[key] = this.sanitizeData(data[key]);\n        }\n      }\n      return sanitized;\n    }\n    \n    return data;\n  }\n  \n  /**\n   * Write log entry\n   */\n  private writeLog(entry: LogEntry): void {\n    if (!this.config.enabled) return;\n    \n    try {\n      const logFile = this.getLogFilePath();\n      const line = JSON.stringify(entry) + '\\n';\n      \n      fs.appendFileSync(logFile, line, 'utf-8');\n      \n      // Check file size and rotate if needed\n      this.rotateLogsIfNeeded(logFile);\n    } catch (error) {\n      // Fail silently to not disrupt main operation\n      if (process.env.NODE_ENV === 'development') {\n        console.error('Failed to write log:', error);\n      }\n    }\n  }\n  \n  /**\n   * Rotate logs if file exceeds max size\n   */\n  private rotateLogsIfNeeded(logFile: string): void {\n    try {\n      const stats = fs.statSync(logFile);\n      \n      if (stats.size > this.config.maxFileSize!) {\n        const timestamp = Date.now();\n        const rotatedFile = logFile.replace('.jsonl', `.${timestamp}.jsonl`);\n        fs.renameSync(logFile, rotatedFile);\n        \n        // Clean up old files\n        this.cleanupOldLogs();\n      }\n    } catch (error) {\n      // Ignore rotation errors\n    }\n  }\n  \n  /**\n   * Clean up old log files\n   */\n  private cleanupOldLogs(): void {\n    if (!this.config.logDir) return;\n    \n    try {\n      const files = fs.readdirSync(this.config.logDir)\n        .filter(f => f.startsWith('llmverify-') && f.endsWith('.jsonl'))\n        .map(f => ({\n          name: f,\n          path: path.join(this.config.logDir!, f),\n          time: fs.statSync(path.join(this.config.logDir!, f)).mtime.getTime()\n        }))\n        .sort((a, b) => b.time - a.time);\n      \n      // Keep only maxFiles\n      if (files.length > this.config.maxFiles!) {\n        files.slice(this.config.maxFiles!).forEach(file => {\n          try {\n            fs.unlinkSync(file.path);\n          } catch (error) {\n            // Ignore deletion errors\n          }\n        });\n      }\n    } catch (error) {\n      // Ignore cleanup errors\n    }\n  }\n  \n  /**\n   * Create log entry\n   */\n  private createEntry(level: LogLevel, message: string, data?: any, error?: Error): LogEntry {\n    const entry: LogEntry = {\n      timestamp: new Date().toISOString(),\n      level,\n      requestId: this.getRequestId(),\n      message: this.config.sanitizePII ? this.sanitizeData(message) : message\n    };\n    \n    if (data) {\n      entry.data = this.sanitizeData(data);\n    }\n    \n    if (this.requestStartTime) {\n      entry.duration = Date.now() - this.requestStartTime;\n    }\n    \n    if (error) {\n      entry.error = {\n        message: error.message,\n        code: (error as any).code,\n        stack: process.env.NODE_ENV === 'development' ? error.stack : undefined\n      };\n    }\n    \n    if (this.config.includeMetadata) {\n      entry.metadata = {\n        version: require('../../package.json').version,\n        pid: process.pid,\n        hostname: os.hostname()\n      };\n    }\n    \n    return entry;\n  }\n  \n  /**\n   * Check if should log at level\n   */\n  private shouldLog(level: LogLevel): boolean {\n    const levels = [LogLevel.DEBUG, LogLevel.INFO, LogLevel.WARN, LogLevel.ERROR];\n    const configLevelIndex = levels.indexOf(this.config.level);\n    const messageLevelIndex = levels.indexOf(level);\n    \n    return messageLevelIndex >= configLevelIndex;\n  }\n  \n  /**\n   * Log debug message\n   */\n  public debug(message: string, data?: any): void {\n    if (this.shouldLog(LogLevel.DEBUG)) {\n      this.writeLog(this.createEntry(LogLevel.DEBUG, message, data));\n    }\n  }\n  \n  /**\n   * Log info message\n   */\n  public info(message: string, data?: any): void {\n    if (this.shouldLog(LogLevel.INFO)) {\n      this.writeLog(this.createEntry(LogLevel.INFO, message, data));\n    }\n  }\n  \n  /**\n   * Log warning message\n   */\n  public warn(message: string, data?: any): void {\n    if (this.shouldLog(LogLevel.WARN)) {\n      this.writeLog(this.createEntry(LogLevel.WARN, message, data));\n    }\n  }\n  \n  /**\n   * Log error message\n   */\n  public error(message: string, error?: Error, data?: any): void {\n    if (this.shouldLog(LogLevel.ERROR)) {\n      this.writeLog(this.createEntry(LogLevel.ERROR, message, data, error));\n    }\n  }\n  \n  /**\n   * Read logs for a specific date\n   */\n  public readLogs(date?: string): LogEntry[] {\n    if (!this.config.logDir) return [];\n    \n    const dateStr = date || new Date().toISOString().split('T')[0];\n    const logFile = path.join(this.config.logDir, `llmverify-${dateStr}.jsonl`);\n    \n    if (!fs.existsSync(logFile)) return [];\n    \n    try {\n      const content = fs.readFileSync(logFile, 'utf-8');\n      return content\n        .split('\\n')\n        .filter(line => line.trim())\n        .map(line => JSON.parse(line) as LogEntry);\n    } catch (error) {\n      console.error('Failed to read logs:', error);\n      return [];\n    }\n  }\n  \n  /**\n   * Get log statistics\n   */\n  public getStats(date?: string): {\n    totalEntries: number;\n    byLevel: Record<LogLevel, number>;\n    errorCount: number;\n    avgDuration: number;\n  } {\n    const logs = this.readLogs(date);\n    \n    const stats = {\n      totalEntries: logs.length,\n      byLevel: {\n        [LogLevel.DEBUG]: 0,\n        [LogLevel.INFO]: 0,\n        [LogLevel.WARN]: 0,\n        [LogLevel.ERROR]: 0\n      },\n      errorCount: 0,\n      avgDuration: 0\n    };\n    \n    let totalDuration = 0;\n    let durationCount = 0;\n    \n    logs.forEach(log => {\n      stats.byLevel[log.level]++;\n      if (log.error) stats.errorCount++;\n      if (log.duration) {\n        totalDuration += log.duration;\n        durationCount++;\n      }\n    });\n    \n    if (durationCount > 0) {\n      stats.avgDuration = totalDuration / durationCount;\n    }\n    \n    return stats;\n  }\n}\n\n/**\n * Global logger instance\n */\nlet globalLogger: Logger | null = null;\n\n/**\n * Get global logger\n */\nexport function getLogger(config?: Partial<LoggerConfig>): Logger {\n  if (!globalLogger) {\n    globalLogger = new Logger(config);\n  }\n  return globalLogger;\n}\n\n/**\n * Set global logger\n */\nexport function setLogger(logger: Logger): void {\n  globalLogger = logger;\n}\n\n/**\n * Reset global logger\n */\nexport function resetLogger(): void {\n  globalLogger = null;\n}\n"]}