@clduab11/gemini-flow/src/services/google-services/infrastructure/resource-coordinator.ts

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.

/**
 * Resource Coordinator for GPU/Memory Management
 *
 * Advanced resource coordination system with intelligent allocation,
 * load balancing, and performance optimization for high-throughput operations.
 */

import { EventEmitter } from "events";
import { Logger } from "../../../utils/logger.js";
import {
  ResourceCoordinatorConfig,
  ServiceResponse,
  ServiceError,
  PerformanceMetrics,
} from "../interfaces.js";

export interface ResourcePool {
  id: string;
  type: "gpu" | "cpu" | "memory" | "storage" | "network";
  capacity: ResourceCapacity;
  allocated: ResourceAllocation;
  available: ResourceAllocation;
  utilization: ResourceUtilization;
  health: ResourceHealth;
}

export interface ResourceCapacity {
  cores?: number;
  memory: number; // MB
  storage?: number; // GB
  bandwidth?: number; // Mbps
  compute?: number; // FLOPS
}

export interface ResourceAllocation {
  cores?: number;
  memory: number; // MB
  storage?: number; // GB
  bandwidth?: number; // Mbps
  compute?: number; // FLOPS
  reservations: ResourceReservation[];
}

export interface ResourceReservation {
  id: string;
  requestId: string;
  type: "immediate" | "scheduled" | "preemptible";
  priority: number;
  duration: number; // seconds
  startTime: Date;
  endTime?: Date;
  resources: ResourceRequirement;
  status: "pending" | "active" | "completed" | "cancelled";
}

export interface ResourceRequirement {
  cores?: number;
  memory: number; // MB
  storage?: number; // GB
  bandwidth?: number; // Mbps
  compute?: number; // FLOPS
  constraints: ResourceConstraint[];
}

export interface ResourceConstraint {
  type:
    | "affinity"
    | "anti_affinity"
    | "location"
    | "capability"
    | "performance";
  value: any;
  weight: number;
  required: boolean;
}

export interface ResourceUtilization {
  cores?: number; // percentage
  memory: number; // percentage
  storage?: number; // percentage
  bandwidth?: number; // percentage
  compute?: number; // percentage
  efficiency: number; // 0-100
}

export interface ResourceHealth {
  status: "healthy" | "degraded" | "unhealthy" | "offline";
  score: number; // 0-100
  issues: HealthIssue[];
  lastCheck: Date;
  uptime: number; // seconds
}

export interface HealthIssue {
  type: "performance" | "availability" | "capacity" | "error";
  severity: "low" | "medium" | "high" | "critical";
  description: string;
  timestamp: Date;
  resolved: boolean;
}

export interface AllocationRequest {
  id: string;
  type: "task" | "service" | "batch" | "interactive";
  priority: number; // 0-100
  requirements: ResourceRequirement;
  scheduling: SchedulingPreferences;
  monitoring: MonitoringConfig;
  lifecycle: LifecycleConfig;
}

export interface SchedulingPreferences {
  policy: "immediate" | "best_fit" | "first_fit" | "balanced" | "performance";
  preemption: PreemptionConfig;
  migration: MigrationConfig;
  isolation: IsolationConfig;
}

export interface PreemptionConfig {
  enabled: boolean;
  threshold: number; // priority difference
  gracePeriod: number; // seconds
  notification: boolean;
}

export interface MigrationConfig {
  enabled: boolean;
  triggers: MigrationTrigger[];
  overhead: number; // acceptable overhead percentage
}

export interface MigrationTrigger {
  condition: string;
  threshold: number;
  cooldown: number; // seconds
}

export interface IsolationConfig {
  level: "none" | "process" | "container" | "vm" | "bare_metal";
  networking: NetworkIsolation;
  storage: StorageIsolation;
  security: SecurityIsolation;
}

export interface NetworkIsolation {
  vlan?: string;
  subnet?: string;
  bandwidth?: number;
  qos?: QoSConfig;
}

export interface QoSConfig {
  class: string;
  priority: number;
  guarantees: QoSGuarantee[];
}

export interface QoSGuarantee {
  metric: "latency" | "bandwidth" | "jitter" | "loss";
  target: number;
  limit: number;
}

export interface StorageIsolation {
  type: "shared" | "dedicated" | "encrypted";
  path?: string;
  quota?: number; // GB
  iops?: number;
}

export interface SecurityIsolation {
  enabled: boolean;
  policies: SecurityPolicy[];
  encryption: boolean;
  audit: boolean;
}

export interface SecurityPolicy {
  name: string;
  rules: SecurityRule[];
  enforcement: "strict" | "permissive";
}

export interface SecurityRule {
  resource: string;
  action: string;
  principal: string;
  effect: "allow" | "deny";
}

export interface MonitoringConfig {
  enabled: boolean;
  metrics: MonitoringMetric[];
  alerts: AlertConfig[];
  reporting: ReportingConfig;
}

export interface MonitoringMetric {
  name: string;
  type: "counter" | "gauge" | "histogram";
  interval: number; // seconds
  retention: number; // days
}

export interface AlertConfig {
  name: string;
  condition: AlertCondition;
  severity: "low" | "medium" | "high" | "critical";
  channels: string[];
}

export interface AlertCondition {
  metric: string;
  operator: ">" | "<" | "==" | "!=" | ">=" | "<=";
  threshold: number;
  duration: number; // seconds
}

export interface ReportingConfig {
  enabled: boolean;
  frequency: string; // cron expression
  recipients: string[];
  format: "json" | "csv" | "pdf";
}

export interface LifecycleConfig {
  timeout: number; // seconds
  checkpoints: CheckpointConfig;
  cleanup: CleanupConfig;
  restart: RestartConfig;
}

export interface CheckpointConfig {
  enabled: boolean;
  interval: number; // seconds
  storage: string;
  retention: number; // checkpoints to keep
}

export interface CleanupConfig {
  enabled: boolean;
  resources: string[];
  timeout: number; // seconds
}

export interface RestartConfig {
  enabled: boolean;
  maxAttempts: number;
  backoff: BackoffConfig;
}

export interface BackoffConfig {
  strategy: "fixed" | "exponential" | "linear";
  initial: number; // seconds
  max: number; // seconds
  multiplier: number;
}

export interface AllocationResult {
  id: string;
  status: "allocated" | "partial" | "failed" | "queued";
  pools: PoolAllocation[];
  performance: AllocationPerformance;
  cost: AllocationCost;
  metadata: AllocationMetadata;
}

export interface PoolAllocation {
  poolId: string;
  allocation: ResourceAllocation;
  endpoints: ResourceEndpoint[];
  credentials: AccessCredentials;
}

export interface ResourceEndpoint {
  type: "compute" | "storage" | "network";
  address: string;
  port?: number;
  protocol: string;
  authentication: boolean;
}

export interface AccessCredentials {
  type: "token" | "certificate" | "key" | "password";
  value: string;
  expiry?: Date;
  scope: string[];
}

export interface AllocationPerformance {
  expectedThroughput: number;
  expectedLatency: number;
  efficiency: number;
  scalability: ScalabilityInfo;
}

export interface ScalabilityInfo {
  horizontal: boolean;
  vertical: boolean;
  autoScaling: AutoScalingConfig;
}

export interface AutoScalingConfig {
  enabled: boolean;
  triggers: ScalingTrigger[];
  limits: ScalingLimit[];
  policies: ScalingPolicy[];
}

export interface ScalingTrigger {
  metric: string;
  threshold: number;
  direction: "up" | "down";
  cooldown: number; // seconds
}

export interface ScalingLimit {
  resource: string;
  min: number;
  max: number;
}

export interface ScalingPolicy {
  name: string;
  algorithm: "step" | "linear" | "exponential";
  parameters: any;
}

export interface AllocationCost {
  estimated: number;
  breakdown: CostBreakdown[];
  billing: BillingInfo;
}

export interface CostBreakdown {
  resource: string;
  unit: string;
  quantity: number;
  rate: number;
  cost: number;
}

export interface BillingInfo {
  model: "pay_per_use" | "reserved" | "spot" | "committed";
  period: string;
  currency: string;
  discounts: Discount[];
}

export interface Discount {
  type: "volume" | "commitment" | "promotional";
  rate: number;
  condition: string;
}

export interface AllocationMetadata {
  created: Date;
  creator: string;
  tags: Record<string, string>;
  annotations: Record<string, string>;
  version: string;
}

export interface ResourceTopology {
  nodes: TopologyNode[];
  connections: TopologyConnection[];
  clusters: ResourceCluster[];
  regions: ResourceRegion[];
}

export interface TopologyNode {
  id: string;
  type: "compute" | "storage" | "network" | "accelerator";
  location: NodeLocation;
  capabilities: NodeCapability[];
  status: NodeStatus;
}

export interface NodeLocation {
  region: string;
  zone: string;
  rack?: string;
  coordinates?: Coordinates;
}

export interface Coordinates {
  latitude: number;
  longitude: number;
  altitude?: number;
}

export interface NodeCapability {
  name: string;
  version: string;
  performance: PerformanceRating;
  compatibility: string[];
}

export interface PerformanceRating {
  compute: number;
  memory: number;
  storage: number;
  network: number;
  overall: number;
}

export interface NodeStatus {
  state: "online" | "offline" | "maintenance" | "error";
  health: number; // 0-100
  load: ResourceUtilization;
  temperature?: number;
  power?: PowerInfo;
}

export interface PowerInfo {
  consumption: number; // watts
  efficiency: number; // percentage
  thermal: ThermalInfo;
}

export interface ThermalInfo {
  temperature: number; // celsius
  cooling: CoolingInfo;
}

export interface CoolingInfo {
  type: "air" | "liquid" | "immersion";
  capacity: number; // watts
  efficiency: number; // percentage
}

export interface TopologyConnection {
  from: string;
  to: string;
  type: "network" | "storage" | "power";
  bandwidth: number;
  latency: number;
  reliability: number; // 0-1
}

export interface ResourceCluster {
  id: string;
  name: string;
  nodes: string[];
  capabilities: ClusterCapability[];
  policies: ClusterPolicy[];
}

export interface ClusterCapability {
  name: string;
  aggregate: boolean;
  performance: PerformanceRating;
}

export interface ClusterPolicy {
  name: string;
  type: "scheduling" | "security" | "resource" | "network";
  rules: PolicyRule[];
  enforcement: "strict" | "best_effort";
}

export interface PolicyRule {
  condition: string;
  action: string;
  priority: number;
}

export interface ResourceRegion {
  id: string;
  name: string;
  clusters: string[];
  compliance: ComplianceInfo[];
  pricing: RegionPricing;
}

export interface ComplianceInfo {
  standard: string;
  certification: string;
  requirements: string[];
  status: "compliant" | "partial" | "non_compliant";
}

export interface RegionPricing {
  currency: string;
  rates: PricingRate[];
  modifiers: PricingModifier[];
}

export interface PricingRate {
  resource: string;
  unit: string;
  rate: number;
  tier?: PricingTier;
}

export interface PricingTier {
  name: string;
  threshold: number;
  discount: number;
}

export interface PricingModifier {
  name: string;
  type: "multiplier" | "offset" | "discount";
  value: number;
  condition: string;
}

export class ResourceCoordinator extends EventEmitter {
  private logger: Logger;
  private config: ResourceCoordinatorConfig;
  private pools: Map<string, ResourcePool> = new Map();
  private allocations: Map<string, AllocationResult> = new Map();
  private topology: ResourceTopology;
  private scheduler: ResourceScheduler;
  private monitor: ResourceMonitor;
  private optimizer: ResourceOptimizer;
  private balancer: LoadBalancer;
  private predictor: ResourcePredictor;
  private costAnalyzer: CostAnalyzer;

  constructor(config: ResourceCoordinatorConfig) {
    super();
    this.config = config;
    this.logger = new Logger("ResourceCoordinator");

    this.initializeComponents();
    this.setupEventHandlers();
  }

  /**
   * Initializes the resource coordinator
   */
  async initialize(): Promise<void> {
    try {
      this.logger.info("Initializing Resource Coordinator");

      // Discover and initialize resource pools
      await this.discoverResources();

      // Initialize components
      await this.scheduler.initialize();
      await this.monitor.initialize();
      await this.optimizer.initialize();
      await this.balancer.initialize();
      await this.predictor.initialize();
      await this.costAnalyzer.initialize();

      // Start monitoring
      await this.monitor.start();

      // Start optimization
      await this.optimizer.start();

      this.emit("initialized");
    } catch (error) {
      this.logger.error("Failed to initialize resource coordinator", error);
      throw error;
    }
  }

  /**
   * Allocates resources based on requirements
   */
  async allocateResources(
    request: AllocationRequest,
  ): Promise<ServiceResponse<AllocationResult>> {
    const startTime = Date.now();

    try {
      this.logger.info("Allocating resources", {
        requestId: request.id,
        type: request.type,
        requirements: request.requirements,
      });

      // Validate request
      await this.validateAllocationRequest(request);

      // Find suitable resource pools
      const candidates = await this.findCandidatePools(request.requirements);

      if (candidates.length === 0) {
        throw new Error("No suitable resource pools found");
      }

      // Schedule allocation
      const allocation = await this.scheduler.schedule(request, candidates);

      // Apply allocation
      const result = await this.applyAllocation(allocation);

      // Store allocation
      this.allocations.set(request.id, result);

      // Start monitoring
      await this.monitor.trackAllocation(request.id, result);

      // Predict future needs
      await this.predictor.updatePredictions(request, result);

      this.emit("allocation:created", { requestId: request.id, result });

      return {
        success: true,
        data: result,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: Date.now() - startTime,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Failed to allocate resources", {
        requestId: request.id,
        error,
      });
      return this.createErrorResponse("ALLOCATION_FAILED", error.message);
    }
  }

  /**
   * Deallocates resources
   */
  async deallocateResources(
    allocationId: string,
  ): Promise<ServiceResponse<void>> {
    try {
      this.logger.info("Deallocating resources", { allocationId });

      const allocation = this.allocations.get(allocationId);
      if (!allocation) {
        throw new Error(`Allocation not found: ${allocationId}`);
      }

      // Stop monitoring
      await this.monitor.stopTracking(allocationId);

      // Release resources
      await this.releaseAllocation(allocation);

      // Remove allocation
      this.allocations.delete(allocationId);

      // Update predictions
      await this.predictor.updateAfterDeallocation(allocationId);

      this.emit("allocation:deallocated", { allocationId });

      return {
        success: true,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: 0,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Failed to deallocate resources", {
        allocationId,
        error,
      });
      return this.createErrorResponse("DEALLOCATION_FAILED", error.message);
    }
  }

  /**
   * Gets allocation status and metrics
   */
  async getAllocation(
    allocationId: string,
  ): Promise<ServiceResponse<AllocationResult>> {
    try {
      const allocation = this.allocations.get(allocationId);
      if (!allocation) {
        throw new Error(`Allocation not found: ${allocationId}`);
      }

      // Update with current metrics
      const currentMetrics =
        await this.monitor.getAllocationMetrics(allocationId);
      allocation.performance = { ...allocation.performance, ...currentMetrics };

      return {
        success: true,
        data: allocation,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: 0,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Failed to get allocation", { allocationId, error });
      return this.createErrorResponse("ALLOCATION_GET_FAILED", error.message);
    }
  }

  /**
   * Lists all resource pools
   */
  async listPools(): Promise<ServiceResponse<ResourcePool[]>> {
    try {
      const pools = Array.from(this.pools.values());

      return {
        success: true,
        data: pools,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: 0,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Failed to list pools", error);
      return this.createErrorResponse("POOL_LIST_FAILED", error.message);
    }
  }

  /**
   * Gets resource topology
   */
  async getTopology(): Promise<ServiceResponse<ResourceTopology>> {
    try {
      return {
        success: true,
        data: this.topology,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: 0,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Failed to get topology", error);
      return this.createErrorResponse("TOPOLOGY_GET_FAILED", error.message);
    }
  }

  /**
   * Gets resource utilization statistics
   */
  async getUtilization(): Promise<ServiceResponse<ResourceUtilization[]>> {
    try {
      const utilizations = Array.from(this.pools.values()).map(
        (pool) => pool.utilization,
      );

      return {
        success: true,
        data: utilizations,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: 0,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Failed to get utilization", error);
      return this.createErrorResponse("UTILIZATION_GET_FAILED", error.message);
    }
  }

  /**
   * Gets performance metrics
   */
  async getMetrics(): Promise<ServiceResponse<PerformanceMetrics>> {
    try {
      const metrics = await this.monitor.getMetrics();

      return {
        success: true,
        data: metrics,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: 0,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Failed to get metrics", error);
      return this.createErrorResponse("METRICS_GET_FAILED", error.message);
    }
  }

  /**
   * Optimizes resource allocation
   */
  async optimizeResources(): Promise<ServiceResponse<OptimizationResult>> {
    try {
      this.logger.info("Optimizing resource allocation");

      const optimization = await this.optimizer.optimize(
        Array.from(this.pools.values()),
        Array.from(this.allocations.values()),
      );

      return {
        success: true,
        data: optimization,
        metadata: {
          requestId: this.generateRequestId(),
          timestamp: new Date(),
          processingTime: 0,
          region: "local",
        },
      };
    } catch (error) {
      this.logger.error("Failed to optimize resources", error);
      return this.createErrorResponse("OPTIMIZATION_FAILED", error.message);
    }
  }

  // ==================== Private Helper Methods ====================

  private initializeComponents(): void {
    this.scheduler = new ResourceScheduler(this.config.scheduler);
    this.monitor = new ResourceMonitor(this.config.monitoring);
    this.optimizer = new ResourceOptimizer(this.config.optimization);
    this.balancer = new LoadBalancer();
    this.predictor = new ResourcePredictor();
    this.costAnalyzer = new CostAnalyzer();
  }

  private setupEventHandlers(): void {
    this.scheduler.on(
      "allocation:scheduled",
      this.handleAllocationScheduled.bind(this),
    );
    this.monitor.on("resource:alert", this.handleResourceAlert.bind(this));
    this.optimizer.on(
      "optimization:completed",
      this.handleOptimizationCompleted.bind(this),
    );
  }

  private async discoverResources(): Promise<void> {
    // Resource discovery implementation
    this.logger.info("Discovering available resources");

    // Create sample resource pools
    const gpuPool: ResourcePool = {
      id: "gpu-pool-1",
      type: "gpu",
      capacity: {
        memory: 32768, // 32GB
        compute: 1000000000, // 1 TFLOPS
      },
      allocated: {
        memory: 0,
        compute: 0,
        reservations: [],
      },
      available: {
        memory: 32768,
        compute: 1000000000,
        reservations: [],
      },
      utilization: {
        memory: 0,
        compute: 0,
        efficiency: 100,
      },
      health: {
        status: "healthy",
        score: 100,
        issues: [],
        lastCheck: new Date(),
        uptime: 86400,
      },
    };

    this.pools.set(gpuPool.id, gpuPool);

    // Initialize topology
    this.topology = {
      nodes: [],
      connections: [],
      clusters: [],
      regions: [],
    };
  }

  private async validateAllocationRequest(
    request: AllocationRequest,
  ): Promise<void> {
    if (!request.id || !request.requirements) {
      throw new Error("Invalid allocation request");
    }

    if (request.requirements.memory <= 0) {
      throw new Error("Memory requirement must be positive");
    }

    if (request.priority < 0 || request.priority > 100) {
      throw new Error("Priority must be between 0 and 100");
    }
  }

  private async findCandidatePools(
    requirements: ResourceRequirement,
  ): Promise<ResourcePool[]> {
    const candidates: ResourcePool[] = [];

    for (const pool of this.pools.values()) {
      if (this.poolCanSatisfy(pool, requirements)) {
        candidates.push(pool);
      }
    }

    // Sort by suitability score
    return candidates.sort(
      (a, b) =>
        this.calculateSuitabilityScore(b, requirements) -
        this.calculateSuitabilityScore(a, requirements),
    );
  }

  private poolCanSatisfy(
    pool: ResourcePool,
    requirements: ResourceRequirement,
  ): boolean {
    // Check if pool has enough available resources
    if (pool.available.memory < requirements.memory) return false;

    if (
      requirements.cores &&
      pool.available.cores &&
      pool.available.cores < requirements.cores
    ) {
      return false;
    }

    if (
      requirements.storage &&
      pool.available.storage &&
      pool.available.storage < requirements.storage
    ) {
      return false;
    }

    if (
      requirements.compute &&
      pool.available.compute &&
      pool.available.compute < requirements.compute
    ) {
      return false;
    }

    // Check health status
    if (pool.health.status !== "healthy") return false;

    return true;
  }

  private calculateSuitabilityScore(
    pool: ResourcePool,
    requirements: ResourceRequirement,
  ): number {
    let score = 0;

    // Resource availability score (0-40)
    const memoryRatio =
      (pool.available.memory - requirements.memory) / pool.capacity.memory;
    score += Math.min(40, memoryRatio * 40);

    // Health score (0-30)
    score += (pool.health.score / 100) * 30;

    // Efficiency score (0-30)
    score += (pool.utilization.efficiency / 100) * 30;

    return score;
  }

  private async applyAllocation(allocation: any): Promise<AllocationResult> {
    // Apply the allocation to the selected pools
    const result: AllocationResult = {
      id: allocation.requestId,
      status: "allocated",
      pools: allocation.pools.map((pool: any) => ({
        poolId: pool.id,
        allocation: pool.allocation,
        endpoints: this.generateEndpoints(pool),
        credentials: this.generateCredentials(pool),
      })),
      performance: {
        expectedThroughput: 1000,
        expectedLatency: 10,
        efficiency: 95,
        scalability: {
          horizontal: true,
          vertical: true,
          autoScaling: {
            enabled: false,
            triggers: [],
            limits: [],
            policies: [],
          },
        },
      },
      cost: {
        estimated: 10.5,
        breakdown: [
          {
            resource: "gpu",
            unit: "hour",
            quantity: 1,
            rate: 10.5,
            cost: 10.5,
          },
        ],
        billing: {
          model: "pay_per_use",
          period: "hourly",
          currency: "USD",
          discounts: [],
        },
      },
      metadata: {
        created: new Date(),
        creator: "resource-coordinator",
        tags: {},
        annotations: {},
        version: "1.0.0",
      },
    };

    return result;
  }

  private async releaseAllocation(allocation: AllocationResult): Promise<void> {
    // Release resources back to pools
    for (const poolAllocation of allocation.pools) {
      const pool = this.pools.get(poolAllocation.poolId);
      if (pool) {
        // Return resources to available pool
        pool.available.memory += poolAllocation.allocation.memory;
        if (poolAllocation.allocation.cores) {
          pool.available.cores =
            (pool.available.cores || 0) + poolAllocation.allocation.cores;
        }
        if (poolAllocation.allocation.compute) {
          pool.available.compute =
            (pool.available.compute || 0) + poolAllocation.allocation.compute;
        }

        // Update utilization
        this.updatePoolUtilization(pool);
      }
    }
  }

  private updatePoolUtilization(pool: ResourcePool): void {
    pool.utilization.memory =
      ((pool.capacity.memory - pool.available.memory) / pool.capacity.memory) *
      100;

    if (pool.capacity.cores && pool.available.cores) {
      pool.utilization.cores =
        ((pool.capacity.cores - pool.available.cores) / pool.capacity.cores) *
        100;
    }

    if (pool.capacity.compute && pool.available.compute) {
      pool.utilization.compute =
        ((pool.capacity.compute - pool.available.compute) /
          pool.capacity.compute) *
        100;
    }
  }

  private generateEndpoints(pool: any): ResourceEndpoint[] {
    return [
      {
        type: "compute",
        address: `gpu-node-${pool.id}`,
        port: 22,
        protocol: "ssh",
        authentication: true,
      },
    ];
  }

  private generateCredentials(pool: any): AccessCredentials {
    return {
      type: "token",
      value: "sample-access-token",
      expiry: new Date(Date.now() + 3600000), // 1 hour
      scope: ["compute", "monitoring"],
    };
  }

  private generateRequestId(): string {
    return `req_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
  }

  private createErrorResponse(
    code: string,
    message: string,
  ): ServiceResponse<any> {
    return {
      success: false,
      error: {
        code,
        message,
        retryable: false,
        timestamp: new Date(),
      },
      metadata: {
        requestId: this.generateRequestId(),
        timestamp: new Date(),
        processingTime: 0,
        region: "local",
      },
    };
  }

  private handleAllocationScheduled(event: any): void {
    this.logger.debug("Allocation scheduled", event);
    this.emit("allocation:scheduled", event);
  }

  private handleResourceAlert(event: any): void {
    this.logger.warn("Resource alert", event);
    this.emit("resource:alert", event);
  }

  private handleOptimizationCompleted(event: any): void {
    this.logger.info("Optimization completed", event);
    this.emit("optimization:completed", event);
  }
}

// ==================== Supporting Interfaces ====================

interface OptimizationResult {
  improvements: Improvement[];
  savings: Savings;
  recommendations: Recommendation[];
  impact: ImpactAnalysis;
}

interface Improvement {
  type: "efficiency" | "cost" | "performance" | "utilization";
  description: string;
  benefit: number;
  effort: number;
  priority: number;
}

interface Savings {
  cost: number;
  resources: ResourceSavings[];
  timeframe: string;
}

interface ResourceSavings {
  type: string;
  amount: number;
  unit: string;
  percentage: number;
}

interface Recommendation {
  title: string;
  description: string;
  category: string;
  priority: "low" | "medium" | "high" | "critical";
  effort: "low" | "medium" | "high";
  impact: "low" | "medium" | "high";
}

interface ImpactAnalysis {
  performance: number;
  cost: number;
  efficiency: number;
  sustainability: number;
  risk: number;
}

// ==================== Supporting Classes ====================
// (Abbreviated implementations for brevity)

class ResourceScheduler extends EventEmitter {
  private config: any;
  private logger: Logger;

  constructor(config: any) {
    super();
    this.config = config;
    this.logger = new Logger("ResourceScheduler");
  }

  async initialize(): Promise<void> {
    this.logger.info("Initializing resource scheduler");
  }

  async schedule(
    request: AllocationRequest,
    candidates: ResourcePool[],
  ): Promise<any> {
    // Scheduling implementation
    return {
      requestId: request.id,
      pools: candidates.slice(0, 1).map((pool) => ({
        id: pool.id,
        allocation: {
          memory: request.requirements.memory,
          cores: request.requirements.cores,
          compute: request.requirements.compute,
          reservations: [],
        },
      })),
    };
  }
}

class ResourceMonitor extends EventEmitter {
  private config: any;
  private logger: Logger;

  constructor(config: any) {
    super();
    this.config = config;
    this.logger = new Logger("ResourceMonitor");
  }

  async initialize(): Promise<void> {
    this.logger.info("Initializing resource monitor");
  }

  async start(): Promise<void> {
    this.logger.info("Starting resource monitoring");
  }

  async trackAllocation(
    allocationId: string,
    result: AllocationResult,
  ): Promise<void> {
    // Allocation tracking implementation
  }

  async stopTracking(allocationId: string): Promise<void> {
    // Stop tracking implementation
  }

  async getAllocationMetrics(allocationId: string): Promise<any> {
    // Metrics collection implementation
    return {};
  }

  async getMetrics(): Promise<PerformanceMetrics> {
    return {
      latency: { mean: 0, p50: 0, p95: 0, p99: 0, max: 0 },
      throughput: {
        requestsPerSecond: 0,
        bytesPerSecond: 0,
        operationsPerSecond: 0,
      },
      utilization: { cpu: 0, memory: 0, disk: 0, network: 0 },
      errors: { rate: 0, percentage: 0, types: {} },
    };
  }
}

class ResourceOptimizer extends EventEmitter {
  private config: any;
  private logger: Logger;

  constructor(config: any) {
    super();
    this.config = config;
    this.logger = new Logger("ResourceOptimizer");
  }

  async initialize(): Promise<void> {
    this.logger.info("Initializing resource optimizer");
  }

  async start(): Promise<void> {
    this.logger.info("Starting resource optimization");
  }

  async optimize(
    pools: ResourcePool[],
    allocations: AllocationResult[],
  ): Promise<OptimizationResult> {
    // Optimization implementation
    return {
      improvements: [],
      savings: { cost: 0, resources: [], timeframe: "1 month" },
      recommendations: [],
      impact: {
        performance: 0,
        cost: 0,
        efficiency: 0,
        sustainability: 0,
        risk: 0,
      },
    };
  }
}

class LoadBalancer {
  private logger: Logger;

  constructor() {
    this.logger = new Logger("LoadBalancer");
  }

  async initialize(): Promise<void> {
    this.logger.info("Initializing load balancer");
  }
}

class ResourcePredictor {
  private logger: Logger;

  constructor() {
    this.logger = new Logger("ResourcePredictor");
  }

  async initialize(): Promise<void> {
    this.logger.info("Initializing resource predictor");
  }

  async updatePredictions(
    request: AllocationRequest,
    result: AllocationResult,
  ): Promise<void> {
    // Prediction update implementation
  }

  async updateAfterDeallocation(allocationId: string): Promise<void> {
    // Post-deallocation prediction update
  }
}

class CostAnalyzer {
  private logger: Logger;

  constructor() {
    this.logger = new Logger("CostAnalyzer");
  }

  async initialize(): Promise<void> {
    this.logger.info("Initializing cost analyzer");
  }
}