/v3-ddd-architecture

name: v3-ddd-architecture
description: "Domain-Driven Design architecture for claude-flow v3. Implements modular, bounded context architecture with clean separation of concerns and microkernel pattern."

V3 DDD Architecture

What This Skill Does

Designs and implements Domain-Driven Design (DDD) architecture for claude-flow v3, decomposing god objects into bounded contexts, implementing clean architecture patterns, and enabling modular, testable code structure.

Quick Start

# Initialize DDD architecture analysis
Task("Architecture analysis", "Analyze current architecture and design DDD boundaries", "core-architect")

# Domain modeling (parallel)
Task("Domain decomposition", "Break down orchestrator god object into domains", "core-architect")
Task("Context mapping", "Map bounded contexts and relationships", "core-architect")
Task("Interface design", "Design clean domain interfaces", "core-architect")

DDD Implementation Strategy

Current Architecture Analysis

├── PROBLEMATIC: core/orchestrator.ts (1,440 lines - GOD OBJECT)
│   ├── Task management responsibilities
│   ├── Session management responsibilities
│   ├── Health monitoring responsibilities
│   ├── Lifecycle management responsibilities
│   └── Event coordination responsibilities
│
└── TARGET: Modular DDD Architecture
    ├── core/domains/
    │   ├── task-management/
    │   ├── session-management/
    │   ├── health-monitoring/
    │   ├── lifecycle-management/
    │   └── event-coordination/
    └── core/shared/
        ├── interfaces/
        ├── value-objects/
        └── domain-events/

Domain Boundaries

1. Task Management Domain

// core/domains/task-management/
interface TaskManagementDomain {
  // Entities
  Task: TaskEntity;
  TaskQueue: TaskQueueEntity;

  // Value Objects
  TaskId: TaskIdVO;
  TaskStatus: TaskStatusVO;
  Priority: PriorityVO;

  // Services
  TaskScheduler: TaskSchedulingService;
  TaskValidator: TaskValidationService;

  // Repository
  TaskRepository: ITaskRepository;
}

2. Session Management Domain

// core/domains/session-management/
interface SessionManagementDomain {
  // Entities
  Session: SessionEntity;
  SessionState: SessionStateEntity;

  // Value Objects
  SessionId: SessionIdVO;
  SessionStatus: SessionStatusVO;

  // Services
  SessionLifecycle: SessionLifecycleService;
  SessionPersistence: SessionPersistenceService;

  // Repository
  SessionRepository: ISessionRepository;
}

3. Health Monitoring Domain

// core/domains/health-monitoring/
interface HealthMonitoringDomain {
  // Entities
  HealthCheck: HealthCheckEntity;
  Metric: MetricEntity;

  // Value Objects
  HealthStatus: HealthStatusVO;
  Threshold: ThresholdVO;

  // Services
  HealthCollector: HealthCollectionService;
  AlertManager: AlertManagementService;

  // Repository
  MetricsRepository: IMetricsRepository;
}

Microkernel Architecture Pattern

Core Kernel

// core/kernel/claude-flow-kernel.ts
export class ClaudeFlowKernel {
  private domains: Map<string, Domain> = new Map();
  private eventBus: DomainEventBus;
  private dependencyContainer: Container;

  async initialize(): Promise<void> {
    // Load core domains
    await this.loadDomain('task-management', new TaskManagementDomain());
    await this.loadDomain('session-management', new SessionManagementDomain());
    await this.loadDomain('health-monitoring', new HealthMonitoringDomain());

    // Wire up domain events
    this.setupDomainEventHandlers();
  }

  async loadDomain(name: string, domain: Domain): Promise<void> {
    await domain.initialize(this.dependencyContainer);
    this.domains.set(name, domain);
  }

  getDomain<T extends Domain>(name: string): T {
    const domain = this.domains.get(name);
    if (!domain) {
      throw new DomainNotLoadedError(name);
    }
    return domain as T;
  }
}

Plugin Architecture

// core/plugins/
interface DomainPlugin {
  name: string;
  version: string;
  dependencies: string[];

  initialize(kernel: ClaudeFlowKernel): Promise<void>;
  shutdown(): Promise<void>;
}

// Example: Swarm Coordination Plugin
export class SwarmCoordinationPlugin implements DomainPlugin {
  name = 'swarm-coordination';
  version = '3.0.0';
  dependencies = ['task-management', 'session-management'];

  async initialize(kernel: ClaudeFlowKernel): Promise<void> {
    const taskDomain = kernel.getDomain<TaskManagementDomain>('task-management');
    const sessionDomain = kernel.getDomain<SessionManagementDomain>('session-management');

    // Register swarm coordination services
    this.swarmCoordinator = new UnifiedSwarmCoordinator(taskDomain, sessionDomain);
    kernel.registerService('swarm-coordinator', this.swarmCoordinator);
  }
}

Domain Events & Integration

Event-Driven Communication

// core/shared/domain-events/
abstract class DomainEvent {
  public readonly eventId: string;
  public readonly aggregateId: string;
  public readonly occurredOn: Date;
  public readonly eventVersion: number;

  constructor(aggregateId: string) {
    this.eventId = crypto.randomUUID();
    this.aggregateId = aggregateId;
    this.occurredOn = new Date();
    this.eventVersion = 1;
  }
}

// Task domain events
export class TaskAssignedEvent extends DomainEvent {
  constructor(
    taskId: string,
    public readonly agentId: string,
    public readonly priority: Priority
  ) {
    super(taskId);
  }
}

export class TaskCompletedEvent extends DomainEvent {
  constructor(
    taskId: string,
    public readonly result: TaskResult,
    public readonly duration: number
  ) {
    super(taskId);
  }
}

// Event handlers
@EventHandler(TaskCompletedEvent)
export class TaskCompletedHandler {
  constructor(
    private metricsRepository: IMetricsRepository,
    private sessionService: SessionLifecycleService
  ) {}

  async handle(event: TaskCompletedEvent): Promise<void> {
    // Update met