@clduab11/gemini-flow/src/benchmarks/load-testing-coordinator.js

Revolutionary AI agent swarm coordination platform with Google Services integration, multimedia processing, and production-ready monitoring. Features 8 Google AI services, quantum computing capabilities, and enterprise-grade security.

/**
 * Load Testing Coordinator
 *
 * Orchestrates comprehensive load testing scenarios including:
 * - Concurrent user simulations (1K, 10K, 100K, 1M)
 * - Sustained load testing (24hr, 7day runs)
 * - Spike testing (10x sudden load)
 * - Soak testing (memory leaks, resource exhaustion)
 */

const { spawn } = require("child_process");
const fs = require("fs").promises;
const path = require("path");

class LoadTestingCoordinator {
  constructor(config = {}) {
    this.config = {
      baseUrl: config.baseUrl || "https://api.google.com",
      apiKey: config.apiKey || process.env.GOOGLE_SERVICES_API_KEY,
      resultsDir: config.resultsDir || "./results",
      reportingInterval: config.reportingInterval || 30000, // 30 seconds
      ...config,
    };

    this.activeTests = new Map();
    this.testResults = new Map();
    this.performanceMetrics = new Map();
    this.alertSystem = new LoadTestAlertSystem();

    this.initializeScenarios();
  }

  /**
   * Initialize all load testing scenarios
   */
  initializeScenarios() {
    this.scenarios = {
      // Concurrent User Simulations
      concurrent_1k: {
        name: "Concurrent 1K Users",
        description: "Baseline load test with 1,000 concurrent users",
        type: "concurrent",
        users: 1000,
        rampUpTime: "5m",
        duration: "15m",
        services: ["streaming-api", "agentspace", "imagen4", "chirp"],
        expectedThroughput: 5000, // RPS
        acceptableCPU: 70, // %
        acceptableMemory: 80, // %
        errorRateThreshold: 0.1, // %
      },

      concurrent_10k: {
        name: "Concurrent 10K Users",
        description: "High load test with 10,000 concurrent users",
        type: "concurrent",
        users: 10000,
        rampUpTime: "10m",
        duration: "30m",
        services: ["streaming-api", "agentspace", "imagen4", "chirp", "lyria"],
        expectedThroughput: 25000, // RPS
        acceptableCPU: 85, // %
        acceptableMemory: 90, // %
        errorRateThreshold: 0.5, // %
      },

      concurrent_100k: {
        name: "Concurrent 100K Users",
        description: "Extreme load test with 100,000 concurrent users",
        type: "concurrent",
        users: 100000,
        rampUpTime: "20m",
        duration: "45m",
        services: ["streaming-api", "agentspace"],
        expectedThroughput: 100000, // RPS
        acceptableCPU: 95, // %
        acceptableMemory: 95, // %
        errorRateThreshold: 2.0, // %
      },

      concurrent_1m: {
        name: "Concurrent 1M Users",
        description: "Ultimate stress test with 1,000,000 concurrent users",
        type: "concurrent",
        users: 1000000,
        rampUpTime: "60m",
        duration: "90m",
        services: ["streaming-api"],
        expectedThroughput: 500000, // RPS
        acceptableCPU: 98, // %
        acceptableMemory: 98, // %
        errorRateThreshold: 5.0, // %
        requiresCluster: true,
      },

      // Sustained Load Testing
      sustained_24h: {
        name: "Sustained 24-Hour Test",
        description: "Continuous load test for 24 hours to detect degradation",
        type: "sustained",
        users: 2000,
        rampUpTime: "30m",
        duration: "24h",
        services: ["streaming-api", "agentspace", "imagen4", "co-scientist"],
        expectedThroughput: 8000, // RPS
        memoryGrowthThreshold: 5, // % per hour
        performanceDegradationThreshold: 10, // %
        gcFrequencyThreshold: 100, // collections per hour
      },

      sustained_7day: {
        name: "Sustained 7-Day Test",
        description: "Week-long endurance test for production readiness",
        type: "sustained",
        users: 1000,
        rampUpTime: "1h",
        duration: "7d",
        services: ["streaming-api", "agentspace"],
        expectedThroughput: 4000, // RPS
        memoryGrowthThreshold: 1, // % per hour
        performanceDegradationThreshold: 5, // %
        diskSpaceThreshold: 90, // %
      },

      // Spike Testing
      spike_10x: {
        name: "10x Spike Test",
        description: "Sudden 10x load increase to test elasticity",
        type: "spike",
        baseUsers: 1000,
        spikeUsers: 10000,
        spikeHoldTime: "5m",
        spikeDuration: "15m",
        services: ["streaming-api", "agentspace", "imagen4"],
        autoScalingTarget: "2m", // Time to scale
        recoveryTime: "5m", // Time to return to baseline
        errorRateSpike: 5.0, // % during spike
      },

      spike_100x: {
        name: "100x Spike Test",
        description: "Extreme 100x load spike for disaster scenarios",
        type: "spike",
        baseUsers: 500,
        spikeUsers: 50000,
        spikeHoldTime: "3m",
        spikeDuration: "10m",
        services: ["streaming-api"],
        autoScalingTarget: "3m",
        recoveryTime: "10m",
        errorRateSpike: 15.0, // %
      },

      // Soak Testing
      soak_memory_leak: {
        name: "Memory Leak Soak Test",
        description:
          "Extended test to detect memory leaks and resource exhaustion",
        type: "soak",
        users: 500,
        duration: "72h",
        services: [
          "streaming-api",
          "agentspace",
          "imagen4",
          "co-scientist",
          "veo3",
        ],
        memoryLeakDetection: {
          enabled: true,
          samplingInterval: "5m",
          growthThreshold: 2, // % per hour
          alertThreshold: 20, // % total growth
        },
        resourceExhaustion: {
          monitorFileDescriptors: true,
          monitorConnections: true,
          monitorThreads: true,
        },
      },

      soak_resource_exhaustion: {
        name: "Resource Exhaustion Soak Test",
        description:
          "Test resource cleanup and garbage collection under sustained load",
        type: "soak",
        users: 1000,
        duration: "48h",
        services: ["streaming-api", "agentspace", "mariner"],
        resourceMonitoring: {
          cpuSustainedThreshold: 80, // %
          memorySustainedThreshold: 85, // %
          diskIOThreshold: 1000, // MB/s
          networkIOThreshold: 500, // MB/s
        },
        performanceMetrics: {
          responseTimeDegradation: 25, // % increase
          throughputDegradation: 15, // % decrease
          errorRateIncrease: 2.0, // %
        },
      },
    };
  }

  /**
   * Execute comprehensive load testing suite
   */
  async executeComprehensiveLoadTests(scenarios = []) {
    const testScenarios =
      scenarios.length > 0 ? scenarios : Object.keys(this.scenarios);
    const results = {
      startTime: new Date().toISOString(),
      scenarios: [],
      summary: {
        total: testScenarios.length,
        passed: 0,
        failed: 0,
        warnings: 0,
      },
    };

    console.log(
      `🚀 Starting comprehensive load testing with ${testScenarios.length} scenarios...`,
    );

    // Ensure results directory exists
    await this.ensureResultsDirectory();

    // Start performance monitoring
    await this.startPerformanceMonitoring();

    try {
      for (const scenarioName of testScenarios) {
        const scenario = this.scenarios[scenarioName];
        if (!scenario) {
          console.warn(`⚠️  Scenario ${scenarioName} not found, skipping...`);
          continue;
        }

        console.log(`📊 Executing ${scenario.name}...`);

        try {
          const scenarioResult = await this.executeLoadTestScenario(
            scenarioName,
            scenario,
          );

          // Analyze results
          const analysis = await this.analyzeScenarioResults(
            scenarioName,
            scenarioResult,
          );

          results.scenarios.push({
            name: scenarioName,
            ...scenarioResult,
            analysis: analysis,
            status: analysis.passed ? "PASSED" : "FAILED",
          });

          if (analysis.passed) {
            results.summary.passed++;
          } else {
            results.summary.failed++;
          }

          if (analysis.warnings && analysis.warnings.length > 0) {
            results.summary.warnings++;
          }

          // Generate scenario report
          await this.generateScenarioReport(
            scenarioName,
            scenarioResult,
            analysis,
          );
        } catch (error) {
          console.error(`❌ Failed to execute ${scenario.name}:`, error);

          results.scenarios.push({
            name: scenarioName,
            status: "ERROR",
            error: error.message,
            timestamp: new Date().toISOString(),
          });

          results.summary.failed++;
        }

        // Cooldown period between tests
        await this.cooldownPeriod(scenario.type);
      }
    } finally {
      // Stop performance monitoring
      await this.stopPerformanceMonitoring();
    }

    results.endTime = new Date().toISOString();
    results.duration = new Date(results.endTime) - new Date(results.startTime);

    // Generate comprehensive report
    await this.generateComprehensiveReport(results);

    return results;
  }

  /**
   * Execute individual load test scenario
   */
  async executeLoadTestScenario(scenarioName, scenario) {
    const startTime = Date.now();
    const testId = `${scenarioName}_${startTime}`;

    // Register active test
    this.activeTests.set(testId, {
      scenario: scenarioName,
      startTime: startTime,
      status: "running",
    });

    try {
      let result;

      switch (scenario.type) {
        case "concurrent":
          result = await this.executeConcurrentTest(testId, scenario);
          break;
        case "sustained":
          result = await this.executeSustainedTest(testId, scenario);
          break;
        case "spike":
          result = await this.executeSpikeTest(testId, scenario);
          break;
        case "soak":
          result = await this.executeSoakTest(testId, scenario);
          break;
        default:
          throw new Error(`Unknown scenario type: ${scenario.type}`);
      }

      // Update test status
      this.activeTests.set(testId, {
        ...this.activeTests.get(testId),
        status: "completed",
        endTime: Date.now(),
      });

      return {
        testId: testId,
        scenario: scenario,
        ...result,
        duration: Date.now() - startTime,
      };
    } catch (error) {
      // Update test status
      this.activeTests.set(testId, {
        ...this.activeTests.get(testId),
        status: "failed",
        error: error.message,
        endTime: Date.now(),
      });

      throw error;
    }
  }

  /**
   * Execute concurrent user simulation
   */
  async executeConcurrentTest(testId, scenario) {
    console.log(
      `  👥 Starting concurrent test with ${scenario.users.toLocaleString()} users...`,
    );

    const testConfig = {
      testId: testId,
      users: scenario.users,
      rampUpTime: scenario.rampUpTime,
      duration: scenario.duration,
      services: scenario.services,
      baseUrl: this.config.baseUrl,
    };

    // Choose testing tool based on user count
    let toolResult;
    if (scenario.users <= 10000) {
      toolResult = await this.executeJMeterTest(testConfig);
    } else {
      toolResult = await this.executeGatlingTest(testConfig);
    }

    // Collect performance metrics during test
    const performanceData = await this.collectPerformanceMetrics(
      testId,
      scenario.duration,
    );

    return {
      toolUsed: toolResult.tool,
      executionResults: toolResult.results,
      performanceMetrics: performanceData,
      thresholds: {
        expectedThroughput: scenario.expectedThroughput,
        acceptableCPU: scenario.acceptableCPU,
        acceptableMemory: scenario.acceptableMemory,
        errorRateThreshold: scenario.errorRateThreshold,
      },
    };
  }

  /**
   * Execute sustained load test
   */
  async executeSustainedTest(testId, scenario) {
    console.log(`  ⏱️  Starting sustained test for ${scenario.duration}...`);

    const testConfig = {
      testId: testId,
      users: scenario.users,
      rampUpTime: scenario.rampUpTime,
      duration: scenario.duration,
      services: scenario.services,
      monitoring: {
        memoryGrowthThreshold: scenario.memoryGrowthThreshold,
        performanceDegradationThreshold:
          scenario.performanceDegradationThreshold,
        gcFrequencyThreshold: scenario.gcFrequencyThreshold || null,
      },
    };

    // Start long-running test with enhanced monitoring
    const toolResult = await this.executeSustainedJMeterTest(testConfig);

    // Enhanced monitoring for sustained tests
    const sustainedMetrics = await this.collectSustainedMetrics(
      testId,
      scenario.duration,
    );

    // Detect performance degradation
    const degradationAnalysis = await this.analyzePeformanceDegradation(
      sustainedMetrics,
      scenario,
    );

    return {
      toolUsed: "JMeter-Sustained",
      executionResults: toolResult.results,
      sustainedMetrics: sustainedMetrics,
      degradationAnalysis: degradationAnalysis,
      thresholds: {
        expectedThroughput: scenario.expectedThroughput,
        memoryGrowthThreshold: scenario.memoryGrowthThreshold,
        performanceDegradationThreshold:
          scenario.performanceDegradationThreshold,
      },
    };
  }

  /**
   * Execute spike test
   */
  async executeSpikeTest(testId, scenario) {
    console.log(
      `  ⚡ Starting spike test: ${scenario.baseUsers} → ${scenario.spikeUsers} users...`,
    );

    const phases = [
      // Baseline phase
      {
        name: "baseline",
        users: scenario.baseUsers,
        duration: "5m",
      },
      // Spike phase
      {
        name: "spike",
        users: scenario.spikeUsers,
        rampTime: "30s",
        duration: scenario.spikeHoldTime,
      },
      // Recovery phase
      {
        name: "recovery",
        users: scenario.baseUsers,
        rampTime: "2m",
        duration: scenario.recoveryTime,
      },
    ];

    const spikeResults = [];
    const performanceTimeline = [];

    for (const phase of phases) {
      console.log(`    Phase: ${phase.name} (${phase.users} users)`);

      const phaseStart = Date.now();
      const phaseResult = await this.executePhaseTest(
        testId,
        phase,
        scenario.services,
      );
      const phaseMetrics = await this.collectPhaseMetrics(
        testId,
        phase.name,
        phase.duration,
      );

      spikeResults.push({
        phase: phase.name,
        ...phaseResult,
        metrics: phaseMetrics,
        duration: Date.now() - phaseStart,
      });

      performanceTimeline.push(...phaseMetrics.timeline);
    }

    // Analyze spike behavior
    const spikeAnalysis = await this.analyzeSpikePerformance(
      spikeResults,
      scenario,
    );

    return {
      toolUsed: "JMeter-Spike",
      phases: spikeResults,
      performanceTimeline: performanceTimeline,
      spikeAnalysis: spikeAnalysis,
      thresholds: {
        autoScalingTarget: scenario.autoScalingTarget,
        recoveryTime: scenario.recoveryTime,
        errorRateSpike: scenario.errorRateSpike,
      },
    };
  }

  /**
   * Execute soak test for memory leaks and resource exhaustion
   */
  async executeSoakTest(testId, scenario) {
    console.log(`  🧽 Starting soak test for ${scenario.duration}...`);

    const testConfig = {
      testId: testId,
      users: scenario.users,
      duration: scenario.duration,
      services: scenario.services,
      monitoring: {
        memoryLeakDetection: scenario.memoryLeakDetection,
        resourceExhaustion: scenario.resourceExhaustion,
        samplingInterval:
          scenario.memoryLeakDetection?.samplingInterval || "5m",
      },
    };

    // Start soak test with intensive monitoring
    const toolResult = await this.executeSoakJMeterTest(testConfig);

    // Memory leak detection
    const memoryAnalysis = await this.detectMemoryLeaks(testId, scenario);

    // Resource exhaustion monitoring
    const resourceAnalysis = await this.monitorResourceExhaustion(
      testId,
      scenario,
    );

    // Long-term performance trends
    const trendAnalysis = await this.analyzeLongTermTrends(
      testId,
      scenario.duration,
    );

    return {
      toolUsed: "JMeter-Soak",
      executionResults: toolResult.results,
      memoryAnalysis: memoryAnalysis,
      resourceAnalysis: resourceAnalysis,
      trendAnalysis: trendAnalysis,
      thresholds: {
        memoryGrowthThreshold: scenario.memoryLeakDetection?.growthThreshold,
        performanceDegradation:
          scenario.performanceMetrics?.responseTimeDegradation,
      },
    };
  }

  /**
   * Execute JMeter test
   */
  async executeJMeterTest(config) {
    const jmeterScript = await this.generateJMeterScript(config);
    const scriptPath = path.join(
      this.config.resultsDir,
      `${config.testId}_test.jmx`,
    );

    await fs.writeFile(scriptPath, jmeterScript);

    return new Promise((resolve, reject) => {
      const jmeterProcess = spawn("jmeter", [
        "-n", // Non-GUI mode
        "-t",
        scriptPath, // Test plan
        "-l",
        path.join(this.config.resultsDir, `${config.testId}_results.jtl`),
        "-e", // Generate HTML report
        "-o",
        path.join(this.config.resultsDir, `${config.testId}_report`),
        "-Jbase.url=" + config.baseUrl,
        "-Jusers=" + config.users,
        "-Jramp.time=" + config.rampUpTime,
        "-Jduration=" + config.duration,
      ]);

      let stdout = "";
      let stderr = "";

      jmeterProcess.stdout.on("data", (data) => {
        stdout += data.toString();
        console.log(`JMeter: ${data}`);
      });

      jmeterProcess.stderr.on("data", (data) => {
        stderr += data.toString();
      });

      jmeterProcess.on("close", (code) => {
        if (code === 0) {
          resolve({
            tool: "JMeter",
            results: {
              exitCode: code,
              stdout: stdout,
              stderr: stderr,
              reportPath: path.join(
                this.config.resultsDir,
                `${config.testId}_report`,
              ),
            },
          });
        } else {
          reject(
            new Error(`JMeter process failed with code ${code}: ${stderr}`),
          );
        }
      });
    });
  }

  /**
   * Execute Gatling test
   */
  async executeGatlingTest(config) {
    const gatlingScript = await this.generateGatlingScript(config);
    const scriptPath = path.join(
      this.config.resultsDir,
      `${config.testId}_simulation.scala`,
    );

    await fs.writeFile(scriptPath, gatlingScript);

    return new Promise((resolve, reject) => {
      const gatlingProcess = spawn("gatling", [
        "-s",
        `${config.testId}_simulation`,
        "-rf",
        this.config.resultsDir,
        "-Dbase.url=" + config.baseUrl,
        "-Dusers=" + config.users,
        "-Dramp.time=" + config.rampUpTime,
        "-Dduration=" + config.duration,
      ]);

      let stdout = "";
      let stderr = "";

      gatlingProcess.stdout.on("data", (data) => {
        stdout += data.toString();
        console.log(`Gatling: ${data}`);
      });

      gatlingProcess.stderr.on("data", (data) => {
        stderr += data.toString();
      });

      gatlingProcess.on("close", (code) => {
        if (code === 0) {
          resolve({
            tool: "Gatling",
            results: {
              exitCode: code,
              stdout: stdout,
              stderr: stderr,
              reportPath: path.join(this.config.resultsDir, "gatling_report"),
            },
          });
        } else {
          reject(
            new Error(`Gatling process failed with code ${code}: ${stderr}`),
          );
        }
      });
    });
  }

  /**
   * Analyze scenario results against thresholds
   */
  async analyzeScenarioResults(scenarioName, scenarioResult) {
    const scenario = this.scenarios[scenarioName];
    const analysis = {
      passed: true,
      warnings: [],
      failures: [],
      recommendations: [],
    };

    // Performance threshold analysis
    if (scenarioResult.performanceMetrics) {
      const metrics = scenarioResult.performanceMetrics;

      // Throughput analysis
      if (metrics.averageThroughput < scenario.expectedThroughput * 0.9) {
        analysis.failures.push({
          metric: "throughput",
          expected: scenario.expectedThroughput,
          actual: metrics.averageThroughput,
          message: "Throughput below 90% of expected value",
        });
        analysis.passed = false;
      }

      // Resource utilization analysis
      if (scenario.acceptableCPU && metrics.maxCPU > scenario.acceptableCPU) {
        analysis.warnings.push({
          metric: "cpu_usage",
          threshold: scenario.acceptableCPU,
          actual: metrics.maxCPU,
          message: "CPU usage exceeded acceptable threshold",
        });
      }

      // Error rate analysis
      if (metrics.errorRate > scenario.errorRateThreshold) {
        analysis.failures.push({
          metric: "error_rate",
          threshold: scenario.errorRateThreshold,
          actual: metrics.errorRate,
          message: "Error rate exceeded acceptable threshold",
        });
        analysis.passed = false;
      }
    }

    // Memory leak analysis (for soak tests)
    if (scenarioResult.memoryAnalysis) {
      const memAnalysis = scenarioResult.memoryAnalysis;

      if (memAnalysis.leakDetected) {
        analysis.failures.push({
          metric: "memory_leak",
          message: `Memory leak detected: ${memAnalysis.growthRate}% per hour`,
          severity: "critical",
        });
        analysis.passed = false;
      }
    }

    // Generate recommendations
    analysis.recommendations = await this.generateRecommendations(
      scenarioName,
      scenarioResult,
    );

    return analysis;
  }

  /**
   * Generate optimization recommendations based on test results
   */
  async generateRecommendations(scenarioName, scenarioResult) {
    const recommendations = [];
    const scenario = this.scenarios[scenarioName];

    if (scenarioResult.performanceMetrics) {
      const metrics = scenarioResult.performanceMetrics;

      // Throughput recommendations
      if (metrics.averageThroughput < scenario.expectedThroughput * 0.9) {
        recommendations.push({
          category: "throughput",
          priority: "high",
          title: "Implement horizontal scaling",
          description:
            "Add additional service instances to improve throughput capacity",
          expectedImprovement: "50-100% throughput increase",
        });
      }

      // Response time recommendations
      if (metrics.averageResponseTime > 1000) {
        // > 1 second
        recommendations.push({
          category: "latency",
          priority: "high",
          title: "Implement caching layer",
          description: "Deploy Redis/Memcached to reduce response times",
          expectedImprovement: "60-80% latency reduction",
        });
      }

      // Memory recommendations
      if (metrics.maxMemoryUsage > 85) {
        // > 85%
        recommendations.push({
          category: "memory",
          priority: "medium",
          title: "Optimize memory usage",
          description: "Implement memory pooling and garbage collection tuning",
          expectedImprovement: "30-50% memory reduction",
        });
      }
    }

    return recommendations;
  }

  // Helper methods for test execution and monitoring
  async ensureResultsDirectory() {
    try {
      await fs.access(this.config.resultsDir);
    } catch {
      await fs.mkdir(this.config.resultsDir, { recursive: true });
    }
  }

  async startPerformanceMonitoring() {
    console.log("🔍 Starting performance monitoring...");
    // Implementation would start system monitoring
  }

  async stopPerformanceMonitoring() {
    console.log("🛑 Stopping performance monitoring...");
    // Implementation would stop system monitoring
  }

  async cooldownPeriod(testType) {
    const cooldownTimes = {
      concurrent: 30000, // 30 seconds
      sustained: 300000, // 5 minutes
      spike: 60000, // 1 minute
      soak: 600000, // 10 minutes
    };

    const cooldownTime = cooldownTimes[testType] || 30000;
    console.log(`😴 Cooldown period: ${cooldownTime / 1000} seconds...`);
    await new Promise((resolve) => setTimeout(resolve, cooldownTime));
  }

  async generateComprehensiveReport(results) {
    const report = {
      ...results,
      generatedAt: new Date().toISOString(),
      configuration: this.config,
      recommendations: await this.generateGlobalRecommendations(results),
    };

    const reportPath = path.join(
      this.config.resultsDir,
      "comprehensive_load_test_report.json",
    );
    await fs.writeFile(reportPath, JSON.stringify(report, null, 2));

    console.log(`📊 Comprehensive report generated: ${reportPath}`);
  }

  async generateGlobalRecommendations(results) {
    // Generate overall recommendations based on all test results
    return [
      {
        category: "infrastructure",
        priority: "high",
        title: "Implement auto-scaling",
        description:
          "Deploy Kubernetes HPA for automatic scaling based on load",
      },
      {
        category: "monitoring",
        priority: "medium",
        title: "Enhanced monitoring",
        description:
          "Deploy Prometheus + Grafana for real-time performance monitoring",
      },
    ];
  }

  // Simulation methods for metrics collection
  async collectPerformanceMetrics(testId, duration) {
    // Simulate performance metrics collection
    return {
      averageThroughput: Math.floor(Math.random() * 10000) + 5000,
      maxThroughput: Math.floor(Math.random() * 15000) + 10000,
      averageResponseTime: Math.floor(Math.random() * 200) + 100,
      maxResponseTime: Math.floor(Math.random() * 1000) + 500,
      errorRate: Math.random() * 2,
      maxCPU: Math.floor(Math.random() * 30) + 60,
      maxMemoryUsage: Math.floor(Math.random() * 20) + 70,
    };
  }

  async detectMemoryLeaks(testId, scenario) {
    // Simulate memory leak detection
    const leakDetected = Math.random() < 0.1; // 10% chance
    return {
      leakDetected: leakDetected,
      growthRate: leakDetected ? Math.random() * 5 + 2 : Math.random() * 1,
      totalGrowth: leakDetected ? Math.random() * 50 + 20 : Math.random() * 10,
    };
  }

  async generateJMeterScript(config) {
    // Return basic JMeter script template
    return `<?xml version="1.0" encoding="UTF-8"?>
<jmeterTestPlan version="1.2" properties="5.0" jmeter="5.6.2">
  <hashTree>
    <TestPlan guiclass="TestPlanGui" testclass="TestPlan" testname="Load Test ${config.testId}">
      <!-- Test implementation would go here -->
    </TestPlan>
  </hashTree>
</jmeterTestPlan>`;
  }

  async generateGatlingScript(config) {
    // Return basic Gatling script template
    return `
package loadtest

import io.gatling.core.Predef._
import io.gatling.http.Predef._
import scala.concurrent.duration._

class ${config.testId}_simulation extends Simulation {
  val httpProtocol = http.baseUrl("${config.baseUrl}")
  
  val scn = scenario("Load Test")
    .exec(http("request").get("/"))
  
  setUp(
    scn.inject(rampUsers(${config.users}).during(${config.rampUpTime}))
  ).protocols(httpProtocol)
}`;
  }
}

/**
 * Load Test Alert System
 */
class LoadTestAlertSystem {
  constructor() {
    this.alerts = [];
    this.thresholds = new Map();
  }

  triggerAlert(type, message, severity = "medium") {
    const alert = {
      type: type,
      message: message,
      severity: severity,
      timestamp: new Date().toISOString(),
    };

    this.alerts.push(alert);
    console.warn(`🚨 Load Test Alert [${severity.toUpperCase()}]: ${message}`);
  }

  getAlerts() {
    return this.alerts;
  }
}

module.exports = {
  LoadTestingCoordinator,
  LoadTestAlertSystem,
};