Peekaboo MCP

export interface OperationMetrics { operation: string; startTime: number; endTime?: number; duration?: number; success: boolean; error?: string; } export class MetricsCollector { private operations: OperationMetrics[] = []; private counters: Map<string, number> = new Map(); startOperation(operation: string): OperationMetrics { const metric: OperationMetrics = { operation, startTime: Date.now(), success: false }; this.operations.push(metric); return metric; } endOperation(metric: OperationMetrics, success: boolean, error?: string): void { metric.endTime = Date.now(); metric.duration = metric.endTime - metric.startTime; metric.success = success; metric.error = error; // Update counters const key = `${metric.operation}.${success ? 'success' : 'failure'}`; this.counters.set(key, (this.counters.get(key) || 0) + 1); } incrementCounter(name: string): void { this.counters.set(name, (this.counters.get(name) || 0) + 1); } getMetrics(): { operations: OperationMetrics[]; counters: Record<string, number>; summary: { totalOperations: number; successRate: number; averageDuration: number; }; } { const successful = this.operations.filter(op => op.success); const completed = this.operations.filter(op => op.duration !== undefined); return { operations: this.operations.slice(-100), // Last 100 operations counters: Object.fromEntries(this.counters), summary: { totalOperations: this.operations.length, successRate: this.operations.length > 0 ? (successful.length / this.operations.length) * 100 : 0, averageDuration: completed.length > 0 ? completed.reduce((sum, op) => sum + (op.duration || 0), 0) / completed.length : 0 } }; } reset(): void { this.operations = []; this.counters.clear(); } }