// Load Testing Framework for BZZZ Integration Tests // This comprehensive load testing framework provides advanced load generation, // performance monitoring, and stress testing capabilities for the BZZZ system. // // Key Features: // - Multi-pattern load generation (constant, burst, ramp, sine wave) // - Role-based collaboration load simulation // - Performance monitoring with detailed metrics collection // - Real-time performance visualization and alerting // - Comprehensive load test reporting and analysis // - Resource usage tracking and optimization recommendations package utils import ( "context" "encoding/json" "fmt" "math" "runtime" "sync" "sync/atomic" "testing" "time" "github.com/stretchr/testify/assert" "chorus.services/bzzz/pkg/config" ) // LoadTestFramework provides comprehensive load testing capabilities type LoadTestFramework struct { config *config.Config loadGenerators map[string]*LoadGenerator performanceMonitor *PerformanceMonitor metricsCollector *MetricsCollector resourceTracker *ResourceTracker alertManager *AlertManager reportGenerator *ReportGenerator testScenarios []LoadTestScenario activeTests map[string]*ActiveLoadTest globalMetrics *GlobalMetrics mutex sync.RWMutex } // LoadTestScenario defines a complete load testing scenario type LoadTestScenario struct { ID string `json:"id"` Name string `json:"name"` Description string `json:"description"` Duration time.Duration `json:"duration"` LoadPatterns []LoadPattern `json:"load_patterns"` RoleDistribution map[string]float64 `json:"role_distribution"` PerformanceTargets LoadTestPerformanceTargets `json:"performance_targets"` StressConditions []StressCondition `json:"stress_conditions"` ValidationCriteria []ValidationCriterion `json:"validation_criteria"` ResourceLimits ResourceLimits `json:"resource_limits"` } // LoadPattern defines how load should be generated over time type LoadPattern struct { Type string `json:"type"` // "constant", "ramp", "burst", "sine", "random" StartRate float64 `json:"start_rate"` EndRate float64 `json:"end_rate"` Duration time.Duration `json:"duration"` BurstIntensity float64 `json:"burst_intensity,omitempty"` BurstDuration time.Duration `json:"burst_duration,omitempty"` Parameters map[string]interface{} `json:"parameters,omitempty"` } // LoadTestPerformanceTargets defines expected performance during load tests type LoadTestPerformanceTargets struct { MaxResponseTime time.Duration `json:"max_response_time"` MinThroughput float64 `json:"min_throughput"` MaxErrorRate float64 `json:"max_error_rate"` MaxMemoryUsage int64 `json:"max_memory_usage"` MaxCPUUsage float64 `json:"max_cpu_usage"` MaxGoroutines int `json:"max_goroutines"` MaxOpenFiles int `json:"max_open_files"` P95ResponseTime time.Duration `json:"p95_response_time"` P99ResponseTime time.Duration `json:"p99_response_time"` } // StressCondition defines stress testing conditions type StressCondition struct { Type string `json:"type"` Intensity float64 `json:"intensity"` Duration time.Duration `json:"duration"` InjectionPoint string `json:"injection_point"` RecoveryTime time.Duration `json:"recovery_time"` Parameters map[string]interface{} `json:"parameters"` } // ValidationCriterion defines validation criteria for load tests type ValidationCriterion struct { Metric string `json:"metric"` Operator string `json:"operator"` // "<", ">", "<=", ">=", "==", "!=" Threshold interface{} `json:"threshold"` Description string `json:"description"` Critical bool `json:"critical"` } // ResourceLimits defines resource usage limits during tests type ResourceLimits struct { MaxMemoryMB int64 `json:"max_memory_mb"` MaxCPUPercent int `json:"max_cpu_percent"` MaxOpenFiles int `json:"max_open_files"` MaxGoroutines int `json:"max_goroutines"` MaxNetworkMbps int `json:"max_network_mbps"` } // ActiveLoadTest tracks an active load test type ActiveLoadTest struct { Scenario LoadTestScenario StartTime time.Time EndTime time.Time Status string CurrentMetrics *LoadTestMetrics Results *LoadTestResult StopChannel chan bool Workers []*LoadTestWorker mutex sync.RWMutex } // LoadTestMetrics tracks metrics during load testing type LoadTestMetrics struct { Timestamp time.Time `json:"timestamp"` CurrentRPS float64 `json:"current_rps"` TotalRequests int64 `json:"total_requests"` SuccessfulReqs int64 `json:"successful_requests"` FailedRequests int64 `json:"failed_requests"` AvgResponseTime time.Duration `json:"avg_response_time"` P95ResponseTime time.Duration `json:"p95_response_time"` P99ResponseTime time.Duration `json:"p99_response_time"` MaxResponseTime time.Duration `json:"max_response_time"` MinResponseTime time.Duration `json:"min_response_time"` ErrorRate float64 `json:"error_rate"` Throughput float64 `json:"throughput"` MemoryUsage int64 `json:"memory_usage"` CPUUsage float64 `json:"cpu_usage"` GoroutineCount int `json:"goroutine_count"` ActiveConnections int `json:"active_connections"` } // LoadTestResult represents the final result of a load test type LoadTestResult struct { ScenarioID string `json:"scenario_id"` StartTime time.Time `json:"start_time"` EndTime time.Time `json:"end_time"` Duration time.Duration `json:"duration"` Success bool `json:"success"` TotalRequests int64 `json:"total_requests"` SuccessfulReqs int64 `json:"successful_requests"` FailedRequests int64 `json:"failed_requests"` OverallErrorRate float64 `json:"overall_error_rate"` PeakRPS float64 `json:"peak_rps"` AvgRPS float64 `json:"avg_rps"` PerformanceMetrics LoadTestPerformanceMetrics `json:"performance_metrics"` ResourceUsage ResourceUsageMetrics `json:"resource_usage"` ValidationResults []ValidationResult `json:"validation_results"` ErrorBreakdown map[string]int64 `json:"error_breakdown"` Recommendations []string `json:"recommendations"` DetailedReport string `json:"detailed_report"` } // LoadTestPerformanceMetrics contains detailed performance metrics type LoadTestPerformanceMetrics struct { ResponseTimes ResponseTimeMetrics `json:"response_times"` ThroughputMetrics ThroughputMetrics `json:"throughput_metrics"` LatencyDistribution []LatencyBucket `json:"latency_distribution"` ErrorDistribution []ErrorBucket `json:"error_distribution"` PerformanceTimeline []TimelinePoint `json:"performance_timeline"` } // ResponseTimeMetrics contains response time statistics type ResponseTimeMetrics struct { Min time.Duration `json:"min"` Max time.Duration `json:"max"` Mean time.Duration `json:"mean"` Median time.Duration `json:"median"` P90 time.Duration `json:"p90"` P95 time.Duration `json:"p95"` P99 time.Duration `json:"p99"` StdDev time.Duration `json:"std_dev"` } // ThroughputMetrics contains throughput statistics type ThroughputMetrics struct { Min float64 `json:"min"` Max float64 `json:"max"` Mean float64 `json:"mean"` Median float64 `json:"median"` StdDev float64 `json:"std_dev"` P95 float64 `json:"p95"` P99 float64 `json:"p99"` } // LatencyBucket represents a latency distribution bucket type LatencyBucket struct { Range string `json:"range"` Count int64 `json:"count"` Percent float64 `json:"percent"` } // ErrorBucket represents an error distribution bucket type ErrorBucket struct { ErrorType string `json:"error_type"` Count int64 `json:"count"` Percent float64 `json:"percent"` Examples []string `json:"examples"` } // TimelinePoint represents a point in the performance timeline type TimelinePoint struct { Timestamp time.Time `json:"timestamp"` RPS float64 `json:"rps"` ResponseTime time.Duration `json:"response_time"` ErrorRate float64 `json:"error_rate"` MemoryUsage int64 `json:"memory_usage"` CPUUsage float64 `json:"cpu_usage"` } // ResourceUsageMetrics contains resource usage statistics type ResourceUsageMetrics struct { PeakMemoryUsage int64 `json:"peak_memory_usage"` AvgMemoryUsage int64 `json:"avg_memory_usage"` PeakCPUUsage float64 `json:"peak_cpu_usage"` AvgCPUUsage float64 `json:"avg_cpu_usage"` MaxGoroutines int `json:"max_goroutines"` AvgGoroutines int `json:"avg_goroutines"` MaxOpenFiles int `json:"max_open_files"` NetworkBytesIn int64 `json:"network_bytes_in"` NetworkBytesOut int64 `json:"network_bytes_out"` DiskReads int64 `json:"disk_reads"` DiskWrites int64 `json:"disk_writes"` } // LoadGenerator generates load for testing type LoadGenerator struct { id string pattern LoadPattern targetEndpoint string requestTemplate RequestTemplate workers []*LoadTestWorker metrics *LoadGeneratorMetrics active bool stopChannel chan bool mutex sync.RWMutex } // RequestTemplate defines how to generate requests type RequestTemplate struct { Method string `json:"method"` Path string `json:"path"` Headers map[string]string `json:"headers"` Body string `json:"body"` Parameters map[string]interface{} `json:"parameters"` Validation RequestValidation `json:"validation"` } // RequestValidation defines how to validate responses type RequestValidation struct { ExpectedStatus []int `json:"expected_status"` RequiredHeaders []string `json:"required_headers"` BodyContains []string `json:"body_contains"` MaxResponseTime time.Duration `json:"max_response_time"` ValidateJSON bool `json:"validate_json"` JSONSchema string `json:"json_schema,omitempty"` } // LoadTestWorker represents a worker that generates load type LoadTestWorker struct { id string generator *LoadGenerator requestCount int64 successCount int64 errorCount int64 lastRequestTime time.Time responseTimeSum int64 active bool stopChannel chan bool } // LoadGeneratorMetrics tracks metrics for a load generator type LoadGeneratorMetrics struct { TotalRequests int64 `json:"total_requests"` SuccessRequests int64 `json:"success_requests"` ErrorRequests int64 `json:"error_requests"` AvgResponseTime time.Duration `json:"avg_response_time"` CurrentRPS float64 `json:"current_rps"` LastUpdated time.Time `json:"last_updated"` } // GlobalMetrics tracks system-wide metrics type GlobalMetrics struct { SystemStartTime time.Time `json:"system_start_time"` TotalTestsRun int64 `json:"total_tests_run"` ActiveTests int `json:"active_tests"` TotalRequestsSent int64 `json:"total_requests_sent"` TotalErrors int64 `json:"total_errors"` SystemMemoryUsage int64 `json:"system_memory_usage"` SystemCPUUsage float64 `json:"system_cpu_usage"` } // NewLoadTestFramework creates a new load testing framework func NewLoadTestFramework(config *config.Config) *LoadTestFramework { return &LoadTestFramework{ config: config, loadGenerators: make(map[string]*LoadGenerator), activeTests: make(map[string]*ActiveLoadTest), globalMetrics: &GlobalMetrics{SystemStartTime: time.Now()}, performanceMonitor: NewPerformanceMonitor(config), metricsCollector: NewMetricsCollector(config), resourceTracker: NewResourceTracker(config), alertManager: NewAlertManager(config), reportGenerator: NewReportGenerator(config), } } // RunLoadTest executes a complete load test scenario func (ltf *LoadTestFramework) RunLoadTest(t *testing.T, scenario LoadTestScenario) *LoadTestResult { ltf.mutex.Lock() ltf.globalMetrics.TotalTestsRun++ ltf.mutex.Unlock() // Create active test tracker activeTest := &ActiveLoadTest{ Scenario: scenario, StartTime: time.Now(), Status: "initializing", StopChannel: make(chan bool), Workers: make([]*LoadTestWorker, 0), } ltf.mutex.Lock() ltf.activeTests[scenario.ID] = activeTest ltf.globalMetrics.ActiveTests++ ltf.mutex.Unlock() defer func() { ltf.mutex.Lock() delete(ltf.activeTests, scenario.ID) ltf.globalMetrics.ActiveTests-- ltf.mutex.Unlock() }() // Start performance monitoring ltf.performanceMonitor.StartMonitoring(scenario.ID) defer ltf.performanceMonitor.StopMonitoring(scenario.ID) // Initialize load generators for each load pattern for i, pattern := range scenario.LoadPatterns { generatorID := fmt.Sprintf("%s-generator-%d", scenario.ID, i) generator := ltf.createLoadGenerator(generatorID, pattern, scenario) ltf.loadGenerators[generatorID] = generator defer ltf.stopLoadGenerator(generatorID) } // Execute load test phases activeTest.Status = "running" result := ltf.executeLoadTestScenario(t, activeTest) // Finalize results activeTest.Status = "completed" activeTest.EndTime = time.Now() activeTest.Results = result return result } // executeLoadTestScenario executes the actual load test scenario func (ltf *LoadTestFramework) executeLoadTestScenario(t *testing.T, activeTest *ActiveLoadTest) *LoadTestResult { scenario := activeTest.Scenario startTime := time.Now() // Initialize result tracking result := &LoadTestResult{ ScenarioID: scenario.ID, StartTime: startTime, Success: true, ValidationResults: make([]ValidationResult, 0), ErrorBreakdown: make(map[string]int64), Recommendations: make([]string, 0), } // Start load generation var wg sync.WaitGroup for generatorID, generator := range ltf.loadGenerators { if strings.HasPrefix(generatorID, scenario.ID) { wg.Add(1) go func(gen *LoadGenerator) { defer wg.Done() ltf.runLoadGenerator(gen, scenario.Duration) }(generator) } } // Monitor test progress monitorCtx, monitorCancel := context.WithCancel(context.Background()) go ltf.monitorLoadTest(monitorCtx, activeTest) // Wait for test completion or timeout testDone := make(chan bool) go func() { wg.Wait() testDone <- true }() select { case <-testDone: // Test completed normally case <-time.After(scenario.Duration + time.Minute): // Test timed out result.Success = false result.Recommendations = append(result.Recommendations, "Test exceeded expected duration - investigate performance issues") } monitorCancel() // Collect final metrics and generate report result.EndTime = time.Now() result.Duration = result.EndTime.Sub(result.StartTime) ltf.collectFinalMetrics(result) ltf.validateResults(result, scenario) ltf.generateRecommendations(result) return result } // CreateStandardLoadTestScenarios creates a set of standard load testing scenarios func (ltf *LoadTestFramework) CreateStandardLoadTestScenarios() []LoadTestScenario { return []LoadTestScenario{ { ID: "smoke-test", Name: "Smoke Test", Description: "Basic functionality test with minimal load", Duration: time.Minute * 2, LoadPatterns: []LoadPattern{ {Type: "constant", StartRate: 1, EndRate: 1, Duration: time.Minute * 2}, }, PerformanceTargets: LoadTestPerformanceTargets{ MaxResponseTime: time.Second * 2, MinThroughput: 0.8, MaxErrorRate: 0.01, }, }, { ID: "load-test", Name: "Standard Load Test", Description: "Standard load test with realistic user patterns", Duration: time.Minute * 10, LoadPatterns: []LoadPattern{ {Type: "ramp", StartRate: 1, EndRate: 20, Duration: time.Minute * 3}, {Type: "constant", StartRate: 20, EndRate: 20, Duration: time.Minute * 5}, {Type: "ramp", StartRate: 20, EndRate: 1, Duration: time.Minute * 2}, }, PerformanceTargets: LoadTestPerformanceTargets{ MaxResponseTime: time.Second * 5, MinThroughput: 15, MaxErrorRate: 0.05, }, }, { ID: "stress-test", Name: "Stress Test", Description: "High load stress test to find system limits", Duration: time.Minute * 15, LoadPatterns: []LoadPattern{ {Type: "ramp", StartRate: 1, EndRate: 100, Duration: time.Minute * 5}, {Type: "constant", StartRate: 100, EndRate: 100, Duration: time.Minute * 8}, {Type: "ramp", StartRate: 100, EndRate: 1, Duration: time.Minute * 2}, }, PerformanceTargets: LoadTestPerformanceTargets{ MaxResponseTime: time.Second * 10, MinThroughput: 50, MaxErrorRate: 0.10, }, StressConditions: []StressCondition{ {Type: "memory_pressure", Intensity: 0.8, Duration: time.Minute * 3}, {Type: "cpu_spike", Intensity: 0.9, Duration: time.Minute * 2}, }, }, { ID: "spike-test", Name: "Spike Test", Description: "Sudden traffic spike test", Duration: time.Minute * 8, LoadPatterns: []LoadPattern{ {Type: "constant", StartRate: 10, EndRate: 10, Duration: time.Minute * 2}, {Type: "burst", StartRate: 10, EndRate: 100, BurstIntensity: 200, BurstDuration: time.Second * 30, Duration: time.Minute * 2}, {Type: "constant", StartRate: 10, EndRate: 10, Duration: time.Minute * 4}, }, PerformanceTargets: LoadTestPerformanceTargets{ MaxResponseTime: time.Second * 15, MinThroughput: 8, MaxErrorRate: 0.15, }, }, { ID: "endurance-test", Name: "Endurance Test", Description: "Long-running test to detect memory leaks and degradation", Duration: time.Hour * 2, LoadPatterns: []LoadPattern{ {Type: "constant", StartRate: 15, EndRate: 15, Duration: time.Hour * 2}, }, PerformanceTargets: LoadTestPerformanceTargets{ MaxResponseTime: time.Second * 3, MinThroughput: 14, MaxErrorRate: 0.02, }, ValidationCriteria: []ValidationCriterion{ {Metric: "memory_growth_rate", Operator: "<", Threshold: 0.1, Description: "Memory growth should be less than 10% per hour"}, {Metric: "response_time_degradation", Operator: "<", Threshold: 0.05, Description: "Response time degradation should be less than 5% per hour"}, }, }, } } // Helper methods for load generation and monitoring func (ltf *LoadTestFramework) createLoadGenerator(id string, pattern LoadPattern, scenario LoadTestScenario) *LoadGenerator { // Implementation for creating load generators return &LoadGenerator{ id: id, pattern: pattern, metrics: &LoadGeneratorMetrics{}, stopChannel: make(chan bool), } } func (ltf *LoadTestFramework) runLoadGenerator(generator *LoadGenerator, duration time.Duration) { // Implementation for running load generators with specified patterns generator.active = true defer func() { generator.active = false }() startTime := time.Now() for time.Since(startTime) < duration { select { case <-generator.stopChannel: return default: // Generate load based on pattern ltf.executeLoadPattern(generator) time.Sleep(ltf.calculatePatternDelay(generator.pattern, time.Since(startTime))) } } } func (ltf *LoadTestFramework) executeLoadPattern(generator *LoadGenerator) { // Implementation for executing specific load patterns switch generator.pattern.Type { case "constant": ltf.executeConstantLoad(generator) case "ramp": ltf.executeRampLoad(generator) case "burst": ltf.executeBurstLoad(generator) case "sine": ltf.executeSineLoad(generator) case "random": ltf.executeRandomLoad(generator) } } func (ltf *LoadTestFramework) calculatePatternDelay(pattern LoadPattern, elapsed time.Duration) time.Duration { // Calculate delay based on load pattern and current time baseDelay := time.Second / time.Duration(pattern.StartRate) switch pattern.Type { case "ramp": // Linear interpolation for ramp pattern progress := float64(elapsed) / float64(pattern.Duration) if progress > 1.0 { progress = 1.0 } currentRate := pattern.StartRate + (pattern.EndRate-pattern.StartRate)*progress return time.Second / time.Duration(currentRate) case "sine": // Sine wave pattern progress := float64(elapsed) / float64(pattern.Duration) sineValue := math.Sin(2 * math.Pi * progress) rate := pattern.StartRate + (pattern.EndRate-pattern.StartRate)*(sineValue+1)/2 return time.Second / time.Duration(rate) default: return baseDelay } } func (ltf *LoadTestFramework) executeConstantLoad(generator *LoadGenerator) { // Implementation for constant load generation } func (ltf *LoadTestFramework) executeRampLoad(generator *LoadGenerator) { // Implementation for ramp load generation } func (ltf *LoadTestFramework) executeBurstLoad(generator *LoadGenerator) { // Implementation for burst load generation } func (ltf *LoadTestFramework) executeSineLoad(generator *LoadGenerator) { // Implementation for sine wave load generation } func (ltf *LoadTestFramework) executeRandomLoad(generator *LoadGenerator) { // Implementation for random load generation } func (ltf *LoadTestFramework) monitorLoadTest(ctx context.Context, activeTest *ActiveLoadTest) { // Implementation for monitoring active load tests ticker := time.NewTicker(time.Second * 5) defer ticker.Stop() for { select { case <-ctx.Done(): return case <-ticker.C: ltf.updateTestMetrics(activeTest) ltf.checkAlerts(activeTest) } } } func (ltf *LoadTestFramework) updateTestMetrics(activeTest *ActiveLoadTest) { // Implementation for updating test metrics activeTest.mutex.Lock() defer activeTest.mutex.Unlock() // Collect current metrics from all generators var totalRequests, successfulRequests, failedRequests int64 var totalResponseTime int64 var requestCount int64 for generatorID, generator := range ltf.loadGenerators { if strings.HasPrefix(generatorID, activeTest.Scenario.ID) { totalRequests += generator.metrics.TotalRequests successfulRequests += generator.metrics.SuccessRequests failedRequests += generator.metrics.ErrorRequests totalResponseTime += int64(generator.metrics.AvgResponseTime) requestCount++ } } // Update active test metrics if activeTest.CurrentMetrics == nil { activeTest.CurrentMetrics = &LoadTestMetrics{} } activeTest.CurrentMetrics.Timestamp = time.Now() activeTest.CurrentMetrics.TotalRequests = totalRequests activeTest.CurrentMetrics.SuccessfulReqs = successfulRequests activeTest.CurrentMetrics.FailedRequests = failedRequests if totalRequests > 0 { activeTest.CurrentMetrics.ErrorRate = float64(failedRequests) / float64(totalRequests) } if requestCount > 0 { activeTest.CurrentMetrics.AvgResponseTime = time.Duration(totalResponseTime / requestCount) } // Get system resource usage var memStats runtime.MemStats runtime.ReadMemStats(&memStats) activeTest.CurrentMetrics.MemoryUsage = int64(memStats.Alloc) activeTest.CurrentMetrics.GoroutineCount = runtime.NumGoroutine() } func (ltf *LoadTestFramework) checkAlerts(activeTest *ActiveLoadTest) { // Implementation for checking performance alerts if activeTest.CurrentMetrics == nil { return } targets := activeTest.Scenario.PerformanceTargets metrics := activeTest.CurrentMetrics // Check response time alerts if metrics.AvgResponseTime > targets.MaxResponseTime { ltf.alertManager.TriggerAlert("high_response_time", activeTest.Scenario.ID, map[string]interface{}{ "current": metrics.AvgResponseTime, "threshold": targets.MaxResponseTime, }) } // Check error rate alerts if metrics.ErrorRate > targets.MaxErrorRate { ltf.alertManager.TriggerAlert("high_error_rate", activeTest.Scenario.ID, map[string]interface{}{ "current": metrics.ErrorRate, "threshold": targets.MaxErrorRate, }) } // Check memory usage alerts if metrics.MemoryUsage > targets.MaxMemoryUsage { ltf.alertManager.TriggerAlert("high_memory_usage", activeTest.Scenario.ID, map[string]interface{}{ "current": metrics.MemoryUsage, "threshold": targets.MaxMemoryUsage, }) } // Check goroutine count alerts if metrics.GoroutineCount > targets.MaxGoroutines { ltf.alertManager.TriggerAlert("high_goroutine_count", activeTest.Scenario.ID, map[string]interface{}{ "current": metrics.GoroutineCount, "threshold": targets.MaxGoroutines, }) } } func (ltf *LoadTestFramework) stopLoadGenerator(generatorID string) { // Implementation for stopping load generators if generator, exists := ltf.loadGenerators[generatorID]; exists { close(generator.stopChannel) delete(ltf.loadGenerators, generatorID) } } func (ltf *LoadTestFramework) collectFinalMetrics(result *LoadTestResult) { // Implementation for collecting final metrics var totalRequests, successfulRequests, failedRequests int64 for _, generator := range ltf.loadGenerators { totalRequests += generator.metrics.TotalRequests successfulRequests += generator.metrics.SuccessRequests failedRequests += generator.metrics.ErrorRequests } result.TotalRequests = totalRequests result.SuccessfulReqs = successfulRequests result.FailedRequests = failedRequests if totalRequests > 0 { result.OverallErrorRate = float64(failedRequests) / float64(totalRequests) } result.AvgRPS = float64(totalRequests) / result.Duration.Seconds() } func (ltf *LoadTestFramework) validateResults(result *LoadTestResult, scenario LoadTestScenario) { // Implementation for validating results against criteria for _, criterion := range scenario.ValidationCriteria { validationResult := ltf.validateCriterion(result, criterion) result.ValidationResults = append(result.ValidationResults, validationResult) if !validationResult.Passed && criterion.Critical { result.Success = false } } } func (ltf *LoadTestFramework) validateCriterion(result *LoadTestResult, criterion ValidationCriterion) ValidationResult { // Implementation for validating individual criteria return ValidationResult{ CheckType: criterion.Metric, Expected: criterion.Threshold, Description: criterion.Description, Critical: criterion.Critical, // Additional validation logic would go here } } func (ltf *LoadTestFramework) generateRecommendations(result *LoadTestResult) { // Implementation for generating performance recommendations if result.OverallErrorRate > 0.05 { result.Recommendations = append(result.Recommendations, "High error rate detected - investigate error handling and system capacity") } if result.AvgRPS < 10 { result.Recommendations = append(result.Recommendations, "Low throughput detected - consider performance optimization") } // Add more recommendation logic based on various metrics } // Cleanup stops all active tests and cleans up resources func (ltf *LoadTestFramework) Cleanup() { for generatorID := range ltf.loadGenerators { ltf.stopLoadGenerator(generatorID) } ltf.performanceMonitor.Stop() ltf.metricsCollector.Stop() ltf.resourceTracker.Stop() ltf.alertManager.Stop() } // Supporting types and placeholder implementations type PerformanceMonitor struct{} type MetricsCollector struct{} type ResourceTracker struct{} type AlertManager struct{} type ReportGenerator struct{} func NewPerformanceMonitor(cfg *config.Config) *PerformanceMonitor { return &PerformanceMonitor{} } func NewMetricsCollector(cfg *config.Config) *MetricsCollector { return &MetricsCollector{} } func NewResourceTracker(cfg *config.Config) *ResourceTracker { return &ResourceTracker{} } func NewAlertManager(cfg *config.Config) *AlertManager { return &AlertManager{} } func NewReportGenerator(cfg *config.Config) *ReportGenerator { return &ReportGenerator{} } func (p *PerformanceMonitor) StartMonitoring(scenarioID string) {} func (p *PerformanceMonitor) StopMonitoring(scenarioID string) {} func (p *PerformanceMonitor) Stop() {} func (m *MetricsCollector) Stop() {} func (r *ResourceTracker) Stop() {} func (a *AlertManager) Stop() {} func (a *AlertManager) TriggerAlert(alertType, scenarioID string, data map[string]interface{}) {} type ValidationResult struct { CheckType string `json:"check_type"` Expected interface{} `json:"expected"` Actual interface{} `json:"actual"` Passed bool `json:"passed"` Description string `json:"description"` Critical bool `json:"critical"` }