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<!doctype html> <html lang="en"> <head> <title>Code coverage report for src/utils/analytics.ts</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../../prettify.css" /> <link rel="stylesheet" href="../../base.css" /> <link rel="shortcut icon" type="image/x-icon" href="../../favicon.png" /> <meta name="viewport" content="width=device-width, initial-scale=1" /> <style type='text/css'> .coverage-summary .sorter { background-image: url(../../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1><a href="../../index.html">All files</a> / <a href="index.html">src/utils</a> analytics.ts</h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 0% Statements 0/111 </div> <div class='fl pad1y space-right2'> 0% Branches 0/28 </div> <div class='fl pad1y space-right2'> 0% Functions 0/35 </div> <div class='fl pad1y space-right2'> 0% Lines 0/108 </div> </div> Press n or j to go to the next uncovered block, b, p or k for the previous block. 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                                                                                                                                                                                                                                                                                                                                                                                                   </td><td class="text"><pre class="prettyprint lang-js">/** * Tool usage analytics and performance tracking */   import { EventEmitter } from 'events'; import { logger } from './enhanced-logger.js'; import { metrics } from './metrics.js';   // Analytics data interfaces interface ToolUsageStats { toolName: string; callCount: number; totalDuration: number; averageDuration: number; errorCount: number; successCount: number; errorRate: number; lastUsed: Date; firstUsed: Date; }   interface UserAnalytics { userId?: string; clientId: string; toolsCalled: string[]; totalCalls: number; totalDuration: number; errorCount: number; lastActivity: Date; firstActivity: Date; }   interface PerformanceMetrics { timestamp: Date; toolName: string; duration: number; success: boolean; userId?: string; clientId: string; errorMessage?: string; parameters?: any; }   /** * Analytics collector for tool usage and performance */ export class ToolAnalytics extends EventEmitter { private toolStats: Map<string, ToolUsageStats>; private userStats: Map<string, UserAnalytics>; private performanceHistory: PerformanceMetrics[]; private flushInterval: NodeJS.Timeout | null; private maxHistorySize: number; constructor() { super(); this.toolStats = new Map(); this.userStats = new Map(); this.performanceHistory = []; this.flushInterval = null; this.maxHistorySize = parseInt(process.env.ANALYTICS_MAX_HISTORY || '10000'); // Start periodic flushing this.startPeriodicFlush(); } /** * Record tool execution */ recordToolExecution( toolName: string, duration: number, success: boolean, clientId: string, userId?: string, errorMessage?: string, parameters?: any ): void { const now = new Date(); // Update tool statistics this.updateToolStats(toolName, duration, success, now); // Update user statistics this.updateUserStats(clientId, userId, toolName, duration, success, now); // Add to performance history this.addPerformanceRecord({ timestamp: now, toolName, duration, success, userId, clientId, errorMessage, parameters }); // Record metrics metrics.timing('tool_execution_duration', duration, { tool: toolName, status: success ? 'success' : 'error', client: clientId }); metrics.increment('tool_executions_total', { tool: toolName, status: success ? 'success' : 'error', client: clientId }); // Emit analytics event this.emit('toolExecution', { toolName, duration, success, clientId, userId, timestamp: now }); // Log for debugging logger.debug('Tool execution recorded', { toolName, duration, success, clientId, userId: userId || 'anonymous' }); } /** * Update tool statistics */ private updateToolStats(toolName: string, duration: number, success: boolean, timestamp: Date): void { let stats = this.toolStats.get(toolName); Iif (!stats) { stats = { toolName, callCount: 0, totalDuration: 0, averageDuration: 0, errorCount: 0, successCount: 0, errorRate: 0, lastUsed: timestamp, firstUsed: timestamp }; this.toolStats.set(toolName, stats); } // Update counters stats.callCount++; stats.totalDuration += duration; stats.averageDuration = stats.totalDuration / stats.callCount; stats.lastUsed = timestamp; if (success) { stats.successCount++; } else { stats.errorCount++; } stats.errorRate = stats.errorCount / stats.callCount; // Update gauge metrics metrics.gauge('tool_usage_count', stats.callCount, { tool: toolName }); metrics.gauge('tool_average_duration', stats.averageDuration, { tool: toolName }); metrics.gauge('tool_error_rate', stats.errorRate, { tool: toolName }); } /** * Update user statistics */ private updateUserStats( clientId: string, userId: string | undefined, toolName: string, duration: number, success: boolean, timestamp: Date ): void { const key = userId || clientId; let stats = this.userStats.get(key); Iif (!stats) { stats = { userId, clientId, toolsCalled: [], totalCalls: 0, totalDuration: 0, errorCount: 0, lastActivity: timestamp, firstActivity: timestamp }; this.userStats.set(key, stats); } // Update user stats stats.totalCalls++; stats.totalDuration += duration; stats.lastActivity = timestamp; Iif (!stats.toolsCalled.includes(toolName)) { stats.toolsCalled.push(toolName); } Iif (!success) { stats.errorCount++; } // Update user metrics metrics.gauge('user_total_calls', stats.totalCalls, { user: key }); metrics.gauge('user_unique_tools', stats.toolsCalled.length, { user: key }); metrics.gauge('user_error_count', stats.errorCount, { user: key }); } /** * Add performance record */ private addPerformanceRecord(record: PerformanceMetrics): void { this.performanceHistory.push(record); // Trim history if too large Iif (this.performanceHistory.length > this.maxHistorySize) { this.performanceHistory = this.performanceHistory.slice(-this.maxHistorySize * 0.8); } } /** * Get tool usage statistics */ getToolStats(): ToolUsageStats[] { return Array.from(this.toolStats.values()) .sort((a, b) => b.callCount - a.callCount); } /** * Get user analytics */ getUserStats(): UserAnalytics[] { return Array.from(this.userStats.values()) .sort((a, b) => b.totalCalls - a.totalCalls); } /** * Get performance metrics for a time period */ getPerformanceMetrics(startTime?: Date, endTime?: Date): PerformanceMetrics[] { let filtered = this.performanceHistory; Iif (startTime) { filtered = filtered.filter(record => record.timestamp >= startTime); } Iif (endTime) { filtered = filtered.filter(record => record.timestamp <= endTime); } return filtered.sort((a, b) => b.timestamp.getTime() - a.timestamp.getTime()); } /** * Get top performing tools */ getTopTools(limit: number = 10): ToolUsageStats[] { return this.getToolStats().slice(0, limit); } /** * Get slowest tools */ getSlowestTools(limit: number = 10): ToolUsageStats[] { return Array.from(this.toolStats.values()) .sort((a, b) => b.averageDuration - a.averageDuration) .slice(0, limit); } /** * Get tools with highest error rates */ getErrorProneTools(limit: number = 10): ToolUsageStats[] { return Array.from(this.toolStats.values()) .filter(stats => stats.callCount >= 5) // Only tools with meaningful sample size .sort((a, b) => b.errorRate - a.errorRate) .slice(0, limit); } /** * Get active users */ getActiveUsers(hoursBack: number = 24): UserAnalytics[] { const cutoff = new Date(Date.now() - hoursBack * 60 * 60 * 1000); return Array.from(this.userStats.values()) .filter(user => user.lastActivity >= cutoff) .sort((a, b) => b.lastActivity.getTime() - a.lastActivity.getTime()); } /** * Generate analytics summary */ generateSummary(): any { const totalTools = this.toolStats.size; const totalUsers = this.userStats.size; const totalExecutions = Array.from(this.toolStats.values()) .reduce((sum, stats) => sum + stats.callCount, 0); const totalErrors = Array.from(this.toolStats.values()) .reduce((sum, stats) => sum + stats.errorCount, 0); const overallErrorRate = totalExecutions > 0 ? totalErrors / totalExecutions : 0; const topTools = this.getTopTools(5); const slowestTools = this.getSlowestTools(3); const errorProneTools = this.getErrorProneTools(3); const activeUsers = this.getActiveUsers(24); return { overview: { totalTools, totalUsers, totalExecutions, totalErrors, overallErrorRate, timestamp: new Date().toISOString() }, topTools: topTools.map(tool => ({ name: tool.toolName, calls: tool.callCount, avgDuration: Math.round(tool.averageDuration), errorRate: Math.round(tool.errorRate * 100) / 100 })), slowestTools: slowestTools.map(tool => ({ name: tool.toolName, avgDuration: Math.round(tool.averageDuration), calls: tool.callCount })), errorProneTools: errorProneTools.map(tool => ({ name: tool.toolName, errorRate: Math.round(tool.errorRate * 100) / 100, errors: tool.errorCount, calls: tool.callCount })), activeUsers: activeUsers.length, recentActivity: this.performanceHistory.slice(-10).map(record => ({ tool: record.toolName, duration: record.duration, success: record.success, timestamp: record.timestamp.toISOString() })) }; } /** * Export analytics data */ exportData(): any { return { toolStats: Array.from(this.toolStats.entries()), userStats: Array.from(this.userStats.entries()), performanceHistory: this.performanceHistory.slice(-1000), // Last 1000 records summary: this.generateSummary(), exportedAt: new Date().toISOString() }; } /** * Reset analytics data */ reset(): void { this.toolStats.clear(); this.userStats.clear(); this.performanceHistory = []; logger.info('Analytics data reset'); this.emit('reset'); } /** * Start periodic flushing to metrics */ private startPeriodicFlush(): void { const flushInterval = parseInt(process.env.ANALYTICS_FLUSH_INTERVAL || '300000'); // 5 minutes this.flushInterval = setInterval(() => { this.flushMetrics(); }, flushInterval); } /** * Flush analytics to metrics system */ private flushMetrics(): void { const summary = this.generateSummary(); // Log summary logger.info('Analytics summary', summary); // Update system-wide metrics metrics.gauge('analytics_total_tools', summary.overview.totalTools); metrics.gauge('analytics_total_users', summary.overview.totalUsers); metrics.gauge('analytics_total_executions', summary.overview.totalExecutions); metrics.gauge('analytics_overall_error_rate', summary.overview.overallErrorRate); metrics.gauge('analytics_active_users', summary.activeUsers); // Emit flush event this.emit('flush', summary); } /** * Stop analytics collection */ stop(): void { Iif (this.flushInterval) { clearInterval(this.flushInterval); this.flushInterval = null; } // Final flush this.flushMetrics(); logger.info('Analytics collection stopped'); this.emit('stopped'); } }   // Create singleton instance export const toolAnalytics = new ToolAnalytics();   export default toolAnalytics;</pre></td></tr></table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a> at 2025-09-03T19:24:01.802Z </div> <script src="../../prettify.js"></script> <script> window.onload = function () { prettyPrint(); }; </script> <script src="../../sorter.js"></script> <script src="../../block-navigation.js"></script> </body> </html>

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