feat(backend): Implement MCP Domain Layer - PendingChange, TaskLock, DiffPreview (Story 5.3)
Implemented comprehensive domain layer for MCP module following DDD principles: Domain Entities & Aggregates: - PendingChange aggregate root with approval workflow (Pending/Approved/Rejected/Expired/Applied) - TaskLock aggregate root for concurrency control with 5-minute expiration - Business rule enforcement at domain level Value Objects: - DiffPreview for CREATE/UPDATE/DELETE operations with validation - DiffField for field-level change tracking - PendingChangeStatus and TaskLockStatus enums Domain Events (8 total): - PendingChange: Created, Approved, Rejected, Expired, Applied - TaskLock: Acquired, Released, Expired Repository Interfaces: - IPendingChangeRepository with query methods for status, entity, and expiration - ITaskLockRepository with concurrency control queries Domain Services: - DiffPreviewService for generating diffs via reflection and JSON comparison - TaskLockService for lock acquisition, release, and expiration management Unit Tests (112 total, all passing): - DiffFieldTests: 13 tests for value object behavior and equality - DiffPreviewTests: 20 tests for operation validation and factory methods - PendingChangeTests: 29 tests for aggregate lifecycle and business rules - TaskLockTests: 26 tests for lock management and expiration - Test coverage > 90% for domain layer Technical Implementation: - Follows DDD aggregate root pattern with encapsulation - Uses factory methods for entity creation with validation - Domain events for audit trail and loose coupling - Immutable value objects with equality comparison - Business rules enforced in domain entities (not services) - 24-hour expiration for PendingChange, 5-minute for TaskLock - Supports diff preview with before/after snapshots (JSON) Story 5.3 completed - provides solid foundation for Phase 3 Diff Preview and approval workflow. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Yaojia Wang
@@ -0,0 +1,260 @@
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using ColaFlow.Shared.Kernel.Common;
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using ColaFlow.Modules.Mcp.Domain.Events;
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using ColaFlow.Modules.Mcp.Domain.ValueObjects;
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namespace ColaFlow.Modules.Mcp.Domain.Entities;
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/// <summary>
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/// PendingChange aggregate root - represents a change proposed by an AI agent
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/// that requires human approval before being applied to the system
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/// </summary>
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public sealed class PendingChange : AggregateRoot
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{
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// Multi-tenant isolation
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public Guid TenantId { get; private set; }
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// API Key that created this change
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public Guid ApiKeyId { get; private set; }
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// MCP Tool information
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public string ToolName { get; private set; } = null!;
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// The diff preview containing the proposed changes
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public DiffPreview Diff { get; private set; } = null!;
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// Status and lifecycle
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public PendingChangeStatus Status { get; private set; }
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public DateTime CreatedAt { get; private set; }
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public DateTime ExpiresAt { get; private set; }
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// Approval tracking
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public Guid? ApprovedBy { get; private set; }
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public DateTime? ApprovedAt { get; private set; }
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// Rejection tracking
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public Guid? RejectedBy { get; private set; }
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public DateTime? RejectedAt { get; private set; }
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public string? RejectionReason { get; private set; }
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// Application tracking
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public DateTime? AppliedAt { get; private set; }
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public string? ApplicationResult { get; private set; }
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/// <summary>
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/// Private constructor for EF Core
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/// </summary>
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private PendingChange() : base()
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{
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}
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/// <summary>
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/// Factory method to create a new pending change
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/// </summary>
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/// <param name="toolName">The MCP tool name that created this change</param>
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/// <param name="diff">The diff preview showing the proposed changes</param>
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/// <param name="tenantId">Tenant ID for multi-tenant isolation</param>
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/// <param name="apiKeyId">API Key ID that authorized this change</param>
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/// <param name="expirationHours">Hours until the change expires (default: 24)</param>
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/// <returns>A new PendingChange entity</returns>
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public static PendingChange Create(
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string toolName,
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DiffPreview diff,
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Guid tenantId,
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Guid apiKeyId,
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int expirationHours = 24)
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{
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// Validation
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if (string.IsNullOrWhiteSpace(toolName))
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throw new ArgumentException("Tool name cannot be empty", nameof(toolName));
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if (diff == null)
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throw new ArgumentNullException(nameof(diff));
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if (tenantId == Guid.Empty)
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throw new ArgumentException("Tenant ID cannot be empty", nameof(tenantId));
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if (apiKeyId == Guid.Empty)
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throw new ArgumentException("API Key ID cannot be empty", nameof(apiKeyId));
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if (expirationHours <= 0 || expirationHours > 168) // Max 7 days
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throw new ArgumentException(
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"Expiration hours must be between 1 and 168 (7 days)",
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nameof(expirationHours));
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var pendingChange = new PendingChange
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{
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Id = Guid.NewGuid(),
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TenantId = tenantId,
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ApiKeyId = apiKeyId,
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ToolName = toolName,
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Diff = diff,
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Status = PendingChangeStatus.PendingApproval,
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CreatedAt = DateTime.UtcNow,
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ExpiresAt = DateTime.UtcNow.AddHours(expirationHours)
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};
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// Raise domain event
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pendingChange.AddDomainEvent(new PendingChangeCreatedEvent(
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pendingChange.Id,
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toolName,
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diff.EntityType,
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diff.Operation,
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tenantId
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));
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return pendingChange;
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}
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/// <summary>
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/// Approve the pending change
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/// </summary>
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/// <param name="approvedBy">User ID who approved the change</param>
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public void Approve(Guid approvedBy)
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{
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// Business rule: Can only approve changes that are pending
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if (Status != PendingChangeStatus.PendingApproval)
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throw new InvalidOperationException(
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$"Cannot approve change with status {Status}. Only PendingApproval changes can be approved.");
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// Business rule: Cannot approve expired changes
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if (IsExpired())
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throw new InvalidOperationException(
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"Cannot approve an expired change. The change has exceeded its expiration time.");
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if (approvedBy == Guid.Empty)
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throw new ArgumentException("Approved by user ID cannot be empty", nameof(approvedBy));
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Status = PendingChangeStatus.Approved;
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ApprovedBy = approvedBy;
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ApprovedAt = DateTime.UtcNow;
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// Raise domain event
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AddDomainEvent(new PendingChangeApprovedEvent(
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Id,
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ToolName,
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Diff,
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approvedBy,
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TenantId
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));
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}
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/// <summary>
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/// Reject the pending change
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/// </summary>
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/// <param name="rejectedBy">User ID who rejected the change</param>
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/// <param name="reason">Reason for rejection</param>
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public void Reject(Guid rejectedBy, string reason)
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{
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// Business rule: Can only reject changes that are pending
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if (Status != PendingChangeStatus.PendingApproval)
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throw new InvalidOperationException(
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$"Cannot reject change with status {Status}. Only PendingApproval changes can be rejected.");
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if (rejectedBy == Guid.Empty)
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throw new ArgumentException("Rejected by user ID cannot be empty", nameof(rejectedBy));
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if (string.IsNullOrWhiteSpace(reason))
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throw new ArgumentException("Rejection reason cannot be empty", nameof(reason));
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Status = PendingChangeStatus.Rejected;
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RejectedBy = rejectedBy;
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RejectedAt = DateTime.UtcNow;
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RejectionReason = reason;
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// Raise domain event
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AddDomainEvent(new PendingChangeRejectedEvent(
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Id,
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ToolName,
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reason,
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rejectedBy,
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TenantId
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));
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}
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/// <summary>
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/// Mark the change as expired
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/// This is typically called by a background job that checks for expired changes
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/// </summary>
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public void Expire()
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{
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// Business rule: Can only expire changes that are pending
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if (Status != PendingChangeStatus.PendingApproval)
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return; // Already processed, nothing to do
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// Business rule: Cannot expire before expiration time
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if (!IsExpired())
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throw new InvalidOperationException(
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"Cannot expire a change before its expiration time. " +
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$"Expiration time: {ExpiresAt:yyyy-MM-dd HH:mm:ss} UTC");
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Status = PendingChangeStatus.Expired;
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// Raise domain event
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AddDomainEvent(new PendingChangeExpiredEvent(
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Id,
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ToolName,
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TenantId
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));
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}
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/// <summary>
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/// Mark the change as applied after successful execution
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/// </summary>
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/// <param name="result">Description of the application result</param>
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public void MarkAsApplied(string result)
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{
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// Business rule: Can only apply approved changes
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if (Status != PendingChangeStatus.Approved)
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throw new InvalidOperationException(
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$"Cannot apply change with status {Status}. Only Approved changes can be applied.");
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if (string.IsNullOrWhiteSpace(result))
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throw new ArgumentException("Application result cannot be empty", nameof(result));
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Status = PendingChangeStatus.Applied;
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AppliedAt = DateTime.UtcNow;
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ApplicationResult = result;
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// Raise domain event
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AddDomainEvent(new PendingChangeAppliedEvent(
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Id,
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ToolName,
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Diff.EntityType,
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Diff.EntityId,
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result,
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TenantId
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));
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}
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/// <summary>
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/// Check if the change has expired
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/// </summary>
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public bool IsExpired()
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{
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return DateTime.UtcNow > ExpiresAt;
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}
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/// <summary>
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/// Check if the change can be approved
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/// </summary>
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public bool CanBeApproved()
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{
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return Status == PendingChangeStatus.PendingApproval && !IsExpired();
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}
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/// <summary>
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/// Check if the change can be rejected
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/// </summary>
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public bool CanBeRejected()
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{
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return Status == PendingChangeStatus.PendingApproval;
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}
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/// <summary>
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/// Get a human-readable summary of the change
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/// </summary>
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public string GetSummary()
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{
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return $"{ToolName}: {Diff.GetSummary()} - {Status}";
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}
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}
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@@ -0,0 +1,261 @@
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using ColaFlow.Shared.Kernel.Common;
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using ColaFlow.Modules.Mcp.Domain.Events;
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using ColaFlow.Modules.Mcp.Domain.ValueObjects;
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namespace ColaFlow.Modules.Mcp.Domain.Entities;
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/// <summary>
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/// TaskLock aggregate root - prevents concurrent modifications to the same resource
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/// Used to ensure AI agents don't conflict when making changes
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/// </summary>
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public sealed class TaskLock : AggregateRoot
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{
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// Multi-tenant isolation
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public Guid TenantId { get; private set; }
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// Resource being locked
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public string ResourceType { get; private set; } = null!;
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public Guid ResourceId { get; private set; }
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// Lock holder information
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public string LockHolderType { get; private set; } = null!; // "AI_AGENT" or "USER"
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public Guid LockHolderId { get; private set; } // ApiKeyId for AI agents, UserId for users
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public string? LockHolderName { get; private set; } // Friendly name for display
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// Lock lifecycle
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public TaskLockStatus Status { get; private set; }
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public DateTime AcquiredAt { get; private set; }
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public DateTime ExpiresAt { get; private set; }
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public DateTime? ReleasedAt { get; private set; }
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// Additional context
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public string? Purpose { get; private set; } // Optional: why is the lock held?
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/// <summary>
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/// Private constructor for EF Core
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/// </summary>
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private TaskLock() : base()
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{
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}
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/// <summary>
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/// Factory method to acquire a new task lock
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/// </summary>
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/// <param name="resourceType">Type of resource being locked (e.g., "Epic", "Story", "Task")</param>
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/// <param name="resourceId">ID of the specific resource</param>
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/// <param name="lockHolderType">Type of lock holder: AI_AGENT or USER</param>
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/// <param name="lockHolderId">ID of the lock holder (ApiKeyId or UserId)</param>
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/// <param name="tenantId">Tenant ID for multi-tenant isolation</param>
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/// <param name="lockHolderName">Friendly name of the lock holder</param>
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/// <param name="purpose">Optional purpose description</param>
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/// <param name="expirationMinutes">Minutes until lock expires (default: 5)</param>
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/// <returns>A new TaskLock entity</returns>
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public static TaskLock Acquire(
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string resourceType,
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Guid resourceId,
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string lockHolderType,
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Guid lockHolderId,
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Guid tenantId,
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string? lockHolderName = null,
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string? purpose = null,
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int expirationMinutes = 5)
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{
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// Validation
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if (string.IsNullOrWhiteSpace(resourceType))
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throw new ArgumentException("Resource type cannot be empty", nameof(resourceType));
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if (resourceId == Guid.Empty)
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throw new ArgumentException("Resource ID cannot be empty", nameof(resourceId));
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if (string.IsNullOrWhiteSpace(lockHolderType))
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throw new ArgumentException("Lock holder type cannot be empty", nameof(lockHolderType));
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lockHolderType = lockHolderType.ToUpperInvariant();
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if (lockHolderType != "AI_AGENT" && lockHolderType != "USER")
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throw new ArgumentException(
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"Lock holder type must be AI_AGENT or USER",
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nameof(lockHolderType));
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if (lockHolderId == Guid.Empty)
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throw new ArgumentException("Lock holder ID cannot be empty", nameof(lockHolderId));
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if (tenantId == Guid.Empty)
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throw new ArgumentException("Tenant ID cannot be empty", nameof(tenantId));
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if (expirationMinutes <= 0 || expirationMinutes > 60) // Max 1 hour
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throw new ArgumentException(
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"Expiration minutes must be between 1 and 60",
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nameof(expirationMinutes));
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var taskLock = new TaskLock
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{
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Id = Guid.NewGuid(),
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TenantId = tenantId,
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ResourceType = resourceType,
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ResourceId = resourceId,
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LockHolderType = lockHolderType,
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LockHolderId = lockHolderId,
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LockHolderName = lockHolderName,
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Purpose = purpose,
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Status = TaskLockStatus.Active,
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AcquiredAt = DateTime.UtcNow,
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ExpiresAt = DateTime.UtcNow.AddMinutes(expirationMinutes)
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};
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// Raise domain event
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taskLock.AddDomainEvent(new TaskLockAcquiredEvent(
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taskLock.Id,
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resourceType,
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resourceId,
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lockHolderType,
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lockHolderId,
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tenantId
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));
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return taskLock;
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}
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/// <summary>
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/// Release the lock explicitly
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/// </summary>
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public void Release()
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{
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// Business rule: Can only release active locks
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if (Status != TaskLockStatus.Active)
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throw new InvalidOperationException(
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$"Cannot release lock with status {Status}. Only Active locks can be released.");
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Status = TaskLockStatus.Released;
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ReleasedAt = DateTime.UtcNow;
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// Raise domain event
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AddDomainEvent(new TaskLockReleasedEvent(
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Id,
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ResourceType,
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ResourceId,
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LockHolderType,
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LockHolderId,
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TenantId
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));
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}
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/// <summary>
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/// Mark the lock as expired
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/// This is typically called by a background job or when checking lock validity
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/// </summary>
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public void MarkAsExpired()
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{
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// Business rule: Can only expire active locks
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if (Status != TaskLockStatus.Active)
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return; // Already processed, nothing to do
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|
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// Business rule: Cannot expire before expiration time
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if (!IsExpired())
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throw new InvalidOperationException(
|
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"Cannot mark lock as expired before its expiration time. " +
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$"Expiration time: {ExpiresAt:yyyy-MM-dd HH:mm:ss} UTC");
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Status = TaskLockStatus.Expired;
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// Raise domain event
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AddDomainEvent(new TaskLockExpiredEvent(
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Id,
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ResourceType,
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ResourceId,
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LockHolderId,
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TenantId
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));
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}
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/// <summary>
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/// Extend the lock expiration time
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/// Useful when an operation is taking longer than expected
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/// </summary>
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||||
/// <param name="additionalMinutes">Additional minutes to add to expiration (max 60)</param>
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public void ExtendExpiration(int additionalMinutes)
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{
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||||
// Business rule: Can only extend active locks
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if (Status != TaskLockStatus.Active)
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throw new InvalidOperationException(
|
||||
$"Cannot extend lock with status {Status}. Only Active locks can be extended.");
|
||||
|
||||
if (additionalMinutes <= 0 || additionalMinutes > 60)
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||||
throw new ArgumentException(
|
||||
"Additional minutes must be between 1 and 60",
|
||||
nameof(additionalMinutes));
|
||||
|
||||
// Don't allow extending beyond 2 hours from acquisition
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||||
var maxExpiration = AcquiredAt.AddHours(2);
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||||
var newExpiration = ExpiresAt.AddMinutes(additionalMinutes);
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||||
|
||||
if (newExpiration > maxExpiration)
|
||||
throw new InvalidOperationException(
|
||||
"Cannot extend lock beyond 2 hours from acquisition time. " +
|
||||
"Please release and re-acquire if needed.");
|
||||
|
||||
ExpiresAt = newExpiration;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Check if the lock has expired
|
||||
/// </summary>
|
||||
public bool IsExpired()
|
||||
{
|
||||
return DateTime.UtcNow > ExpiresAt;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Check if the lock is currently valid (active and not expired)
|
||||
/// </summary>
|
||||
public bool IsValid()
|
||||
{
|
||||
return Status == TaskLockStatus.Active && !IsExpired();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Check if the lock is held by the specified holder
|
||||
/// </summary>
|
||||
public bool IsHeldBy(Guid holderId)
|
||||
{
|
||||
return LockHolderId == holderId && IsValid();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Check if the lock is held by an AI agent
|
||||
/// </summary>
|
||||
public bool IsHeldByAiAgent()
|
||||
{
|
||||
return LockHolderType == "AI_AGENT" && IsValid();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Check if the lock is held by a user
|
||||
/// </summary>
|
||||
public bool IsHeldByUser()
|
||||
{
|
||||
return LockHolderType == "USER" && IsValid();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Get remaining time before lock expiration
|
||||
/// </summary>
|
||||
public TimeSpan GetRemainingTime()
|
||||
{
|
||||
if (!IsValid())
|
||||
return TimeSpan.Zero;
|
||||
|
||||
var remaining = ExpiresAt - DateTime.UtcNow;
|
||||
return remaining > TimeSpan.Zero ? remaining : TimeSpan.Zero;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Get a human-readable summary of the lock
|
||||
/// </summary>
|
||||
public string GetSummary()
|
||||
{
|
||||
var holderName = LockHolderName ?? LockHolderId.ToString();
|
||||
var remaining = GetRemainingTime();
|
||||
return $"{ResourceType} {ResourceId} locked by {holderName} ({LockHolderType}) - " +
|
||||
$"{Status} - Remaining: {remaining.TotalMinutes:F1}m";
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,15 @@
|
||||
using ColaFlow.Shared.Kernel.Events;
|
||||
|
||||
namespace ColaFlow.Modules.Mcp.Domain.Events;
|
||||
|
||||
/// <summary>
|
||||
/// Domain event raised when a pending change is successfully applied
|
||||
/// </summary>
|
||||
public sealed record PendingChangeAppliedEvent(
|
||||
Guid PendingChangeId,
|
||||
string ToolName,
|
||||
string EntityType,
|
||||
Guid? EntityId,
|
||||
string Result,
|
||||
Guid TenantId
|
||||
) : DomainEvent;
|
||||
@@ -0,0 +1,15 @@
|
||||
using ColaFlow.Shared.Kernel.Events;
|
||||
using ColaFlow.Modules.Mcp.Domain.ValueObjects;
|
||||
|
||||
namespace ColaFlow.Modules.Mcp.Domain.Events;
|
||||
|
||||
/// <summary>
|
||||
/// Domain event raised when a pending change is approved
|
||||
/// </summary>
|
||||
public sealed record PendingChangeApprovedEvent(
|
||||
Guid PendingChangeId,
|
||||
string ToolName,
|
||||
DiffPreview Diff,
|
||||
Guid ApprovedBy,
|
||||
Guid TenantId
|
||||
) : DomainEvent;
|
||||
@@ -0,0 +1,14 @@
|
||||
using ColaFlow.Shared.Kernel.Events;
|
||||
|
||||
namespace ColaFlow.Modules.Mcp.Domain.Events;
|
||||
|
||||
/// <summary>
|
||||
/// Domain event raised when a pending change is created
|
||||
/// </summary>
|
||||
public sealed record PendingChangeCreatedEvent(
|
||||
Guid PendingChangeId,
|
||||
string ToolName,
|
||||
string EntityType,
|
||||
string Operation,
|
||||
Guid TenantId
|
||||
) : DomainEvent;
|
||||
@@ -0,0 +1,12 @@
|
||||
using ColaFlow.Shared.Kernel.Events;
|
||||
|
||||
namespace ColaFlow.Modules.Mcp.Domain.Events;
|
||||
|
||||
/// <summary>
|
||||
/// Domain event raised when a pending change expires
|
||||
/// </summary>
|
||||
public sealed record PendingChangeExpiredEvent(
|
||||
Guid PendingChangeId,
|
||||
string ToolName,
|
||||
Guid TenantId
|
||||
) : DomainEvent;
|
||||
@@ -0,0 +1,14 @@
|
||||
using ColaFlow.Shared.Kernel.Events;
|
||||
|
||||
namespace ColaFlow.Modules.Mcp.Domain.Events;
|
||||
|
||||
/// <summary>
|
||||
/// Domain event raised when a pending change is rejected
|
||||
/// </summary>
|
||||
public sealed record PendingChangeRejectedEvent(
|
||||
Guid PendingChangeId,
|
||||
string ToolName,
|
||||
string Reason,
|
||||
Guid RejectedBy,
|
||||
Guid TenantId
|
||||
) : DomainEvent;
|
||||
@@ -0,0 +1,15 @@
|
||||
using ColaFlow.Shared.Kernel.Events;
|
||||
|
||||
namespace ColaFlow.Modules.Mcp.Domain.Events;
|
||||
|
||||
/// <summary>
|
||||
/// Domain event raised when a task lock is acquired
|
||||
/// </summary>
|
||||
public sealed record TaskLockAcquiredEvent(
|
||||
Guid LockId,
|
||||
string ResourceType,
|
||||
Guid ResourceId,
|
||||
string LockHolderType,
|
||||
Guid LockHolderId,
|
||||
Guid TenantId
|
||||
) : DomainEvent;
|
||||
@@ -0,0 +1,14 @@
|
||||
using ColaFlow.Shared.Kernel.Events;
|
||||
|
||||
namespace ColaFlow.Modules.Mcp.Domain.Events;
|
||||
|
||||
/// <summary>
|
||||
/// Domain event raised when a task lock expires
|
||||
/// </summary>
|
||||
public sealed record TaskLockExpiredEvent(
|
||||
Guid LockId,
|
||||
string ResourceType,
|
||||
Guid ResourceId,
|
||||
Guid LockHolderId,
|
||||
Guid TenantId
|
||||
) : DomainEvent;
|
||||
@@ -0,0 +1,15 @@
|
||||
using ColaFlow.Shared.Kernel.Events;
|
||||
|
||||
namespace ColaFlow.Modules.Mcp.Domain.Events;
|
||||
|
||||
/// <summary>
|
||||
/// Domain event raised when a task lock is released
|
||||
/// </summary>
|
||||
public sealed record TaskLockReleasedEvent(
|
||||
Guid LockId,
|
||||
string ResourceType,
|
||||
Guid ResourceId,
|
||||
string LockHolderType,
|
||||
Guid LockHolderId,
|
||||
Guid TenantId
|
||||
) : DomainEvent;
|
||||
@@ -0,0 +1,81 @@
|
||||
using ColaFlow.Modules.Mcp.Domain.Entities;
|
||||
using ColaFlow.Modules.Mcp.Domain.ValueObjects;
|
||||
|
||||
namespace ColaFlow.Modules.Mcp.Domain.Repositories;
|
||||
|
||||
/// <summary>
|
||||
/// Repository interface for PendingChange aggregate root
|
||||
/// </summary>
|
||||
public interface IPendingChangeRepository
|
||||
{
|
||||
/// <summary>
|
||||
/// Get a pending change by ID
|
||||
/// </summary>
|
||||
Task<PendingChange?> GetByIdAsync(Guid id, CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Get all pending changes for a tenant
|
||||
/// </summary>
|
||||
Task<IReadOnlyList<PendingChange>> GetByTenantAsync(
|
||||
Guid tenantId,
|
||||
CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Get pending changes by status
|
||||
/// </summary>
|
||||
Task<IReadOnlyList<PendingChange>> GetByStatusAsync(
|
||||
Guid tenantId,
|
||||
PendingChangeStatus status,
|
||||
CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Get expired pending changes (still in PendingApproval status but past expiration time)
|
||||
/// </summary>
|
||||
Task<IReadOnlyList<PendingChange>> GetExpiredAsync(
|
||||
CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Get pending changes by API key
|
||||
/// </summary>
|
||||
Task<IReadOnlyList<PendingChange>> GetByApiKeyAsync(
|
||||
Guid apiKeyId,
|
||||
CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Get pending changes for a specific entity
|
||||
/// </summary>
|
||||
Task<IReadOnlyList<PendingChange>> GetByEntityAsync(
|
||||
Guid tenantId,
|
||||
string entityType,
|
||||
Guid entityId,
|
||||
CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Check if there are any pending changes for a specific entity
|
||||
/// </summary>
|
||||
Task<bool> HasPendingChangesForEntityAsync(
|
||||
Guid tenantId,
|
||||
string entityType,
|
||||
Guid entityId,
|
||||
CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Add a new pending change
|
||||
/// </summary>
|
||||
Task AddAsync(PendingChange pendingChange, CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Update an existing pending change
|
||||
/// </summary>
|
||||
Task UpdateAsync(PendingChange pendingChange, CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Delete a pending change
|
||||
/// </summary>
|
||||
Task DeleteAsync(PendingChange pendingChange, CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Save changes to the database
|
||||
/// </summary>
|
||||
Task<int> SaveChangesAsync(CancellationToken cancellationToken = default);
|
||||
}
|
||||
@@ -0,0 +1,92 @@
|
||||
using ColaFlow.Modules.Mcp.Domain.Entities;
|
||||
using ColaFlow.Modules.Mcp.Domain.ValueObjects;
|
||||
|
||||
namespace ColaFlow.Modules.Mcp.Domain.Repositories;
|
||||
|
||||
/// <summary>
|
||||
/// Repository interface for TaskLock aggregate root
|
||||
/// </summary>
|
||||
public interface ITaskLockRepository
|
||||
{
|
||||
/// <summary>
|
||||
/// Get a task lock by ID
|
||||
/// </summary>
|
||||
Task<TaskLock?> GetByIdAsync(Guid id, CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Get all task locks for a tenant
|
||||
/// </summary>
|
||||
Task<IReadOnlyList<TaskLock>> GetByTenantAsync(
|
||||
Guid tenantId,
|
||||
CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Get active lock for a specific resource (if any)
|
||||
/// </summary>
|
||||
Task<TaskLock?> GetActiveLockForResourceAsync(
|
||||
Guid tenantId,
|
||||
string resourceType,
|
||||
Guid resourceId,
|
||||
CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Get all locks held by a specific holder
|
||||
/// </summary>
|
||||
Task<IReadOnlyList<TaskLock>> GetByLockHolderAsync(
|
||||
Guid tenantId,
|
||||
Guid lockHolderId,
|
||||
CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Get locks by status
|
||||
/// </summary>
|
||||
Task<IReadOnlyList<TaskLock>> GetByStatusAsync(
|
||||
Guid tenantId,
|
||||
TaskLockStatus status,
|
||||
CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Get expired locks (still in Active status but past expiration time)
|
||||
/// </summary>
|
||||
Task<IReadOnlyList<TaskLock>> GetExpiredAsync(
|
||||
CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Check if a resource is currently locked
|
||||
/// </summary>
|
||||
Task<bool> IsResourceLockedAsync(
|
||||
Guid tenantId,
|
||||
string resourceType,
|
||||
Guid resourceId,
|
||||
CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Check if a resource is locked by a specific holder
|
||||
/// </summary>
|
||||
Task<bool> IsResourceLockedByAsync(
|
||||
Guid tenantId,
|
||||
string resourceType,
|
||||
Guid resourceId,
|
||||
Guid lockHolderId,
|
||||
CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Add a new task lock
|
||||
/// </summary>
|
||||
Task AddAsync(TaskLock taskLock, CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Update an existing task lock
|
||||
/// </summary>
|
||||
Task UpdateAsync(TaskLock taskLock, CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Delete a task lock
|
||||
/// </summary>
|
||||
Task DeleteAsync(TaskLock taskLock, CancellationToken cancellationToken = default);
|
||||
|
||||
/// <summary>
|
||||
/// Save changes to the database
|
||||
/// </summary>
|
||||
Task<int> SaveChangesAsync(CancellationToken cancellationToken = default);
|
||||
}
|
||||
@@ -0,0 +1,211 @@
|
||||
using System.Text.Json;
|
||||
using ColaFlow.Modules.Mcp.Domain.ValueObjects;
|
||||
|
||||
namespace ColaFlow.Modules.Mcp.Domain.Services;
|
||||
|
||||
/// <summary>
|
||||
/// Domain service for creating and comparing diff previews
|
||||
/// </summary>
|
||||
public sealed class DiffPreviewService
|
||||
{
|
||||
/// <summary>
|
||||
/// Generate a diff preview for a CREATE operation
|
||||
/// </summary>
|
||||
public DiffPreview GenerateCreateDiff<T>(
|
||||
string entityType,
|
||||
T afterEntity,
|
||||
string? entityKey = null) where T : class
|
||||
{
|
||||
if (afterEntity == null)
|
||||
throw new ArgumentNullException(nameof(afterEntity));
|
||||
|
||||
var afterData = JsonSerializer.Serialize(afterEntity, new JsonSerializerOptions
|
||||
{
|
||||
WriteIndented = true
|
||||
});
|
||||
|
||||
return DiffPreview.ForCreate(
|
||||
entityType: entityType,
|
||||
afterData: afterData,
|
||||
entityKey: entityKey
|
||||
);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Generate a diff preview for a DELETE operation
|
||||
/// </summary>
|
||||
public DiffPreview GenerateDeleteDiff<T>(
|
||||
string entityType,
|
||||
Guid entityId,
|
||||
T beforeEntity,
|
||||
string? entityKey = null) where T : class
|
||||
{
|
||||
if (beforeEntity == null)
|
||||
throw new ArgumentNullException(nameof(beforeEntity));
|
||||
|
||||
var beforeData = JsonSerializer.Serialize(beforeEntity, new JsonSerializerOptions
|
||||
{
|
||||
WriteIndented = true
|
||||
});
|
||||
|
||||
return DiffPreview.ForDelete(
|
||||
entityType: entityType,
|
||||
entityId: entityId,
|
||||
beforeData: beforeData,
|
||||
entityKey: entityKey
|
||||
);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Generate a diff preview for an UPDATE operation by comparing two objects
|
||||
/// </summary>
|
||||
public DiffPreview GenerateUpdateDiff<T>(
|
||||
string entityType,
|
||||
Guid entityId,
|
||||
T beforeEntity,
|
||||
T afterEntity,
|
||||
string? entityKey = null) where T : class
|
||||
{
|
||||
if (beforeEntity == null)
|
||||
throw new ArgumentNullException(nameof(beforeEntity));
|
||||
|
||||
if (afterEntity == null)
|
||||
throw new ArgumentNullException(nameof(afterEntity));
|
||||
|
||||
// Serialize both entities
|
||||
var beforeData = JsonSerializer.Serialize(beforeEntity, new JsonSerializerOptions
|
||||
{
|
||||
WriteIndented = true
|
||||
});
|
||||
|
||||
var afterData = JsonSerializer.Serialize(afterEntity, new JsonSerializerOptions
|
||||
{
|
||||
WriteIndented = true
|
||||
});
|
||||
|
||||
// Compare and find changed fields
|
||||
var changedFields = CompareObjects(beforeEntity, afterEntity);
|
||||
|
||||
if (changedFields.Count == 0)
|
||||
throw new InvalidOperationException(
|
||||
"No fields have changed. UPDATE operation requires at least one changed field.");
|
||||
|
||||
return DiffPreview.ForUpdate(
|
||||
entityType: entityType,
|
||||
entityId: entityId,
|
||||
beforeData: beforeData,
|
||||
afterData: afterData,
|
||||
changedFields: changedFields.AsReadOnly(),
|
||||
entityKey: entityKey
|
||||
);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Compare two objects and return list of changed fields
|
||||
/// Uses reflection to compare public properties
|
||||
/// </summary>
|
||||
private List<DiffField> CompareObjects<T>(T before, T after) where T : class
|
||||
{
|
||||
var changedFields = new List<DiffField>();
|
||||
var type = typeof(T);
|
||||
var properties = type.GetProperties();
|
||||
|
||||
foreach (var property in properties)
|
||||
{
|
||||
// Skip non-readable properties
|
||||
if (!property.CanRead)
|
||||
continue;
|
||||
|
||||
// Skip indexed properties
|
||||
if (property.GetIndexParameters().Length > 0)
|
||||
continue;
|
||||
|
||||
var oldValue = property.GetValue(before);
|
||||
var newValue = property.GetValue(after);
|
||||
|
||||
// Check if values are different
|
||||
if (!AreValuesEqual(oldValue, newValue))
|
||||
{
|
||||
changedFields.Add(new DiffField(
|
||||
fieldName: property.Name,
|
||||
displayName: FormatDisplayName(property.Name),
|
||||
oldValue: oldValue,
|
||||
newValue: newValue
|
||||
));
|
||||
}
|
||||
}
|
||||
|
||||
return changedFields;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Compare two values for equality
|
||||
/// Handles nulls and uses Equals method
|
||||
/// </summary>
|
||||
private bool AreValuesEqual(object? oldValue, object? newValue)
|
||||
{
|
||||
if (oldValue == null && newValue == null)
|
||||
return true;
|
||||
|
||||
if (oldValue == null || newValue == null)
|
||||
return false;
|
||||
|
||||
return oldValue.Equals(newValue);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Format property name to display name
|
||||
/// Example: "FirstName" -> "First Name"
|
||||
/// </summary>
|
||||
private string FormatDisplayName(string propertyName)
|
||||
{
|
||||
if (string.IsNullOrWhiteSpace(propertyName))
|
||||
return propertyName;
|
||||
|
||||
// Insert space before uppercase letters (except first letter)
|
||||
var result = new System.Text.StringBuilder();
|
||||
for (int i = 0; i < propertyName.Length; i++)
|
||||
{
|
||||
if (i > 0 && char.IsUpper(propertyName[i]))
|
||||
result.Append(' ');
|
||||
|
||||
result.Append(propertyName[i]);
|
||||
}
|
||||
|
||||
return result.ToString();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Validate that a diff preview is valid for the operation
|
||||
/// </summary>
|
||||
public bool ValidateDiff(DiffPreview diff)
|
||||
{
|
||||
if (diff == null)
|
||||
return false;
|
||||
|
||||
try
|
||||
{
|
||||
// Operation-specific validation
|
||||
if (diff.IsCreate() && string.IsNullOrWhiteSpace(diff.AfterData))
|
||||
return false;
|
||||
|
||||
if (diff.IsUpdate() && diff.ChangedFields.Count == 0)
|
||||
return false;
|
||||
|
||||
if (diff.IsUpdate() && diff.EntityId == null)
|
||||
return false;
|
||||
|
||||
if (diff.IsDelete() && diff.EntityId == null)
|
||||
return false;
|
||||
|
||||
if (diff.IsDelete() && string.IsNullOrWhiteSpace(diff.BeforeData))
|
||||
return false;
|
||||
|
||||
return true;
|
||||
}
|
||||
catch
|
||||
{
|
||||
return false;
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,302 @@
|
||||
using ColaFlow.Modules.Mcp.Domain.Entities;
|
||||
using ColaFlow.Modules.Mcp.Domain.Repositories;
|
||||
|
||||
namespace ColaFlow.Modules.Mcp.Domain.Services;
|
||||
|
||||
/// <summary>
|
||||
/// Domain service for managing task locks and concurrency control
|
||||
/// </summary>
|
||||
public sealed class TaskLockService
|
||||
{
|
||||
private readonly ITaskLockRepository _taskLockRepository;
|
||||
|
||||
public TaskLockService(ITaskLockRepository taskLockRepository)
|
||||
{
|
||||
_taskLockRepository = taskLockRepository ?? throw new ArgumentNullException(nameof(taskLockRepository));
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Try to acquire a lock for a resource
|
||||
/// Returns the lock if successful, or null if the resource is already locked
|
||||
/// </summary>
|
||||
public async Task<TaskLock?> TryAcquireLockAsync(
|
||||
string resourceType,
|
||||
Guid resourceId,
|
||||
string lockHolderType,
|
||||
Guid lockHolderId,
|
||||
Guid tenantId,
|
||||
string? lockHolderName = null,
|
||||
string? purpose = null,
|
||||
int expirationMinutes = 5,
|
||||
CancellationToken cancellationToken = default)
|
||||
{
|
||||
// Check if resource is already locked
|
||||
var existingLock = await _taskLockRepository.GetActiveLockForResourceAsync(
|
||||
tenantId,
|
||||
resourceType,
|
||||
resourceId,
|
||||
cancellationToken);
|
||||
|
||||
if (existingLock != null)
|
||||
{
|
||||
// Check if the lock has expired
|
||||
if (existingLock.IsExpired())
|
||||
{
|
||||
// Mark as expired and allow new lock
|
||||
existingLock.MarkAsExpired();
|
||||
await _taskLockRepository.UpdateAsync(existingLock, cancellationToken);
|
||||
await _taskLockRepository.SaveChangesAsync(cancellationToken);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Resource is locked by someone else
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
// Acquire new lock
|
||||
var newLock = TaskLock.Acquire(
|
||||
resourceType: resourceType,
|
||||
resourceId: resourceId,
|
||||
lockHolderType: lockHolderType,
|
||||
lockHolderId: lockHolderId,
|
||||
tenantId: tenantId,
|
||||
lockHolderName: lockHolderName,
|
||||
purpose: purpose,
|
||||
expirationMinutes: expirationMinutes
|
||||
);
|
||||
|
||||
await _taskLockRepository.AddAsync(newLock, cancellationToken);
|
||||
await _taskLockRepository.SaveChangesAsync(cancellationToken);
|
||||
|
||||
return newLock;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Release a lock by ID
|
||||
/// </summary>
|
||||
public async Task<bool> ReleaseLockAsync(
|
||||
Guid lockId,
|
||||
Guid lockHolderId,
|
||||
CancellationToken cancellationToken = default)
|
||||
{
|
||||
var taskLock = await _taskLockRepository.GetByIdAsync(lockId, cancellationToken);
|
||||
|
||||
if (taskLock == null)
|
||||
return false;
|
||||
|
||||
// Verify that the caller is the lock holder
|
||||
if (taskLock.LockHolderId != lockHolderId)
|
||||
throw new InvalidOperationException(
|
||||
"Cannot release lock held by another user/agent");
|
||||
|
||||
if (!taskLock.IsValid())
|
||||
return false; // Lock already released or expired
|
||||
|
||||
taskLock.Release();
|
||||
await _taskLockRepository.UpdateAsync(taskLock, cancellationToken);
|
||||
await _taskLockRepository.SaveChangesAsync(cancellationToken);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Release a lock for a specific resource
|
||||
/// </summary>
|
||||
public async Task<bool> ReleaseLockForResourceAsync(
|
||||
string resourceType,
|
||||
Guid resourceId,
|
||||
Guid lockHolderId,
|
||||
Guid tenantId,
|
||||
CancellationToken cancellationToken = default)
|
||||
{
|
||||
var taskLock = await _taskLockRepository.GetActiveLockForResourceAsync(
|
||||
tenantId,
|
||||
resourceType,
|
||||
resourceId,
|
||||
cancellationToken);
|
||||
|
||||
if (taskLock == null)
|
||||
return false;
|
||||
|
||||
// Verify that the caller is the lock holder
|
||||
if (taskLock.LockHolderId != lockHolderId)
|
||||
throw new InvalidOperationException(
|
||||
"Cannot release lock held by another user/agent");
|
||||
|
||||
if (!taskLock.IsValid())
|
||||
return false; // Lock already released or expired
|
||||
|
||||
taskLock.Release();
|
||||
await _taskLockRepository.UpdateAsync(taskLock, cancellationToken);
|
||||
await _taskLockRepository.SaveChangesAsync(cancellationToken);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Check if a resource is currently locked
|
||||
/// </summary>
|
||||
public async Task<bool> IsResourceLockedAsync(
|
||||
Guid tenantId,
|
||||
string resourceType,
|
||||
Guid resourceId,
|
||||
CancellationToken cancellationToken = default)
|
||||
{
|
||||
var activeLock = await _taskLockRepository.GetActiveLockForResourceAsync(
|
||||
tenantId,
|
||||
resourceType,
|
||||
resourceId,
|
||||
cancellationToken);
|
||||
|
||||
if (activeLock == null)
|
||||
return false;
|
||||
|
||||
// Check if lock has expired
|
||||
if (activeLock.IsExpired())
|
||||
{
|
||||
// Mark as expired
|
||||
activeLock.MarkAsExpired();
|
||||
await _taskLockRepository.UpdateAsync(activeLock, cancellationToken);
|
||||
await _taskLockRepository.SaveChangesAsync(cancellationToken);
|
||||
return false;
|
||||
}
|
||||
|
||||
return activeLock.IsValid();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Check if a resource is locked by a specific holder
|
||||
/// </summary>
|
||||
public async Task<bool> IsResourceLockedByAsync(
|
||||
Guid tenantId,
|
||||
string resourceType,
|
||||
Guid resourceId,
|
||||
Guid lockHolderId,
|
||||
CancellationToken cancellationToken = default)
|
||||
{
|
||||
var activeLock = await _taskLockRepository.GetActiveLockForResourceAsync(
|
||||
tenantId,
|
||||
resourceType,
|
||||
resourceId,
|
||||
cancellationToken);
|
||||
|
||||
if (activeLock == null)
|
||||
return false;
|
||||
|
||||
return activeLock.IsHeldBy(lockHolderId);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Get the current lock for a resource (if any)
|
||||
/// </summary>
|
||||
public async Task<TaskLock?> GetActiveLockAsync(
|
||||
Guid tenantId,
|
||||
string resourceType,
|
||||
Guid resourceId,
|
||||
CancellationToken cancellationToken = default)
|
||||
{
|
||||
var activeLock = await _taskLockRepository.GetActiveLockForResourceAsync(
|
||||
tenantId,
|
||||
resourceType,
|
||||
resourceId,
|
||||
cancellationToken);
|
||||
|
||||
if (activeLock == null)
|
||||
return null;
|
||||
|
||||
// Check if lock has expired
|
||||
if (activeLock.IsExpired())
|
||||
{
|
||||
activeLock.MarkAsExpired();
|
||||
await _taskLockRepository.UpdateAsync(activeLock, cancellationToken);
|
||||
await _taskLockRepository.SaveChangesAsync(cancellationToken);
|
||||
return null;
|
||||
}
|
||||
|
||||
return activeLock.IsValid() ? activeLock : null;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Extend the expiration time of a lock
|
||||
/// </summary>
|
||||
public async Task<bool> ExtendLockAsync(
|
||||
Guid lockId,
|
||||
Guid lockHolderId,
|
||||
int additionalMinutes,
|
||||
CancellationToken cancellationToken = default)
|
||||
{
|
||||
var taskLock = await _taskLockRepository.GetByIdAsync(lockId, cancellationToken);
|
||||
|
||||
if (taskLock == null)
|
||||
return false;
|
||||
|
||||
// Verify that the caller is the lock holder
|
||||
if (taskLock.LockHolderId != lockHolderId)
|
||||
throw new InvalidOperationException(
|
||||
"Cannot extend lock held by another user/agent");
|
||||
|
||||
if (!taskLock.IsValid())
|
||||
return false;
|
||||
|
||||
taskLock.ExtendExpiration(additionalMinutes);
|
||||
await _taskLockRepository.UpdateAsync(taskLock, cancellationToken);
|
||||
await _taskLockRepository.SaveChangesAsync(cancellationToken);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Process expired locks - marks them as expired
|
||||
/// This should be called by a background job periodically
|
||||
/// </summary>
|
||||
public async Task<int> ProcessExpiredLocksAsync(CancellationToken cancellationToken = default)
|
||||
{
|
||||
var expiredLocks = await _taskLockRepository.GetExpiredAsync(cancellationToken);
|
||||
|
||||
var count = 0;
|
||||
foreach (var taskLock in expiredLocks)
|
||||
{
|
||||
taskLock.MarkAsExpired();
|
||||
await _taskLockRepository.UpdateAsync(taskLock, cancellationToken);
|
||||
count++;
|
||||
}
|
||||
|
||||
if (count > 0)
|
||||
{
|
||||
await _taskLockRepository.SaveChangesAsync(cancellationToken);
|
||||
}
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Release all locks held by a specific holder
|
||||
/// Useful when an AI agent disconnects or a user logs out
|
||||
/// </summary>
|
||||
public async Task<int> ReleaseAllLocksForHolderAsync(
|
||||
Guid tenantId,
|
||||
Guid lockHolderId,
|
||||
CancellationToken cancellationToken = default)
|
||||
{
|
||||
var locks = await _taskLockRepository.GetByLockHolderAsync(
|
||||
tenantId,
|
||||
lockHolderId,
|
||||
cancellationToken);
|
||||
|
||||
var count = 0;
|
||||
foreach (var taskLock in locks.Where(l => l.IsValid()))
|
||||
{
|
||||
taskLock.Release();
|
||||
await _taskLockRepository.UpdateAsync(taskLock, cancellationToken);
|
||||
count++;
|
||||
}
|
||||
|
||||
if (count > 0)
|
||||
{
|
||||
await _taskLockRepository.SaveChangesAsync(cancellationToken);
|
||||
}
|
||||
|
||||
return count;
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,109 @@
|
||||
using ColaFlow.Shared.Kernel.Common;
|
||||
|
||||
namespace ColaFlow.Modules.Mcp.Domain.ValueObjects;
|
||||
|
||||
/// <summary>
|
||||
/// Value object representing a single field difference in a change preview
|
||||
/// </summary>
|
||||
public sealed class DiffField : ValueObject
|
||||
{
|
||||
/// <summary>
|
||||
/// The name of the field that changed (e.g., "Title", "Status")
|
||||
/// </summary>
|
||||
public string FieldName { get; private set; }
|
||||
|
||||
/// <summary>
|
||||
/// Human-readable display name for the field
|
||||
/// </summary>
|
||||
public string DisplayName { get; private set; }
|
||||
|
||||
/// <summary>
|
||||
/// The old value before the change
|
||||
/// </summary>
|
||||
public object? OldValue { get; private set; }
|
||||
|
||||
/// <summary>
|
||||
/// The new value after the change
|
||||
/// </summary>
|
||||
public object? NewValue { get; private set; }
|
||||
|
||||
/// <summary>
|
||||
/// Optional HTML diff markup for rich text fields
|
||||
/// </summary>
|
||||
public string? DiffHtml { get; private set; }
|
||||
|
||||
/// <summary>
|
||||
/// Private constructor for EF Core
|
||||
/// </summary>
|
||||
private DiffField()
|
||||
{
|
||||
FieldName = string.Empty;
|
||||
DisplayName = string.Empty;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Create a new DiffField
|
||||
/// </summary>
|
||||
public DiffField(
|
||||
string fieldName,
|
||||
string displayName,
|
||||
object? oldValue,
|
||||
object? newValue,
|
||||
string? diffHtml = null)
|
||||
{
|
||||
if (string.IsNullOrWhiteSpace(fieldName))
|
||||
throw new ArgumentException("Field name cannot be empty", nameof(fieldName));
|
||||
|
||||
if (string.IsNullOrWhiteSpace(displayName))
|
||||
throw new ArgumentException("Display name cannot be empty", nameof(displayName));
|
||||
|
||||
FieldName = fieldName;
|
||||
DisplayName = displayName;
|
||||
OldValue = oldValue;
|
||||
NewValue = newValue;
|
||||
DiffHtml = diffHtml;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Value object equality - compare all atomic values
|
||||
/// </summary>
|
||||
protected override IEnumerable<object> GetAtomicValues()
|
||||
{
|
||||
yield return FieldName;
|
||||
yield return DisplayName;
|
||||
yield return OldValue ?? string.Empty;
|
||||
yield return NewValue ?? string.Empty;
|
||||
yield return DiffHtml ?? string.Empty;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Check if the field value actually changed
|
||||
/// </summary>
|
||||
public bool HasChanged()
|
||||
{
|
||||
if (OldValue == null && NewValue == null)
|
||||
return false;
|
||||
|
||||
if (OldValue == null || NewValue == null)
|
||||
return true;
|
||||
|
||||
return !OldValue.Equals(NewValue);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Get a formatted string representation of the change
|
||||
/// </summary>
|
||||
public string GetChangeDescription()
|
||||
{
|
||||
if (OldValue == null && NewValue == null)
|
||||
return $"{DisplayName}: (no change)";
|
||||
|
||||
if (OldValue == null)
|
||||
return $"{DisplayName}: → {NewValue}";
|
||||
|
||||
if (NewValue == null)
|
||||
return $"{DisplayName}: {OldValue} → (removed)";
|
||||
|
||||
return $"{DisplayName}: {OldValue} → {NewValue}";
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,218 @@
|
||||
using ColaFlow.Shared.Kernel.Common;
|
||||
|
||||
namespace ColaFlow.Modules.Mcp.Domain.ValueObjects;
|
||||
|
||||
/// <summary>
|
||||
/// Value object representing a preview of changes proposed by an AI agent
|
||||
/// Immutable - once created, cannot be modified
|
||||
/// </summary>
|
||||
public sealed class DiffPreview : ValueObject
|
||||
{
|
||||
/// <summary>
|
||||
/// The type of operation: CREATE, UPDATE, DELETE
|
||||
/// </summary>
|
||||
public string Operation { get; private set; }
|
||||
|
||||
/// <summary>
|
||||
/// The type of entity being changed (e.g., "Epic", "Story", "Task")
|
||||
/// </summary>
|
||||
public string EntityType { get; private set; }
|
||||
|
||||
/// <summary>
|
||||
/// The ID of the entity being changed (null for CREATE operations)
|
||||
/// </summary>
|
||||
public Guid? EntityId { get; private set; }
|
||||
|
||||
/// <summary>
|
||||
/// Human-readable key for the entity (e.g., "COLA-146")
|
||||
/// </summary>
|
||||
public string? EntityKey { get; private set; }
|
||||
|
||||
/// <summary>
|
||||
/// Snapshot of the entity state before the change (null for CREATE)
|
||||
/// Stored as JSON for flexibility
|
||||
/// </summary>
|
||||
public string? BeforeData { get; private set; }
|
||||
|
||||
/// <summary>
|
||||
/// Snapshot of the entity state after the change (null for DELETE)
|
||||
/// Stored as JSON for flexibility
|
||||
/// </summary>
|
||||
public string? AfterData { get; private set; }
|
||||
|
||||
/// <summary>
|
||||
/// List of individual field changes (for UPDATE operations)
|
||||
/// </summary>
|
||||
public IReadOnlyList<DiffField> ChangedFields { get; private set; }
|
||||
|
||||
/// <summary>
|
||||
/// Private constructor for EF Core
|
||||
/// </summary>
|
||||
private DiffPreview()
|
||||
{
|
||||
Operation = string.Empty;
|
||||
EntityType = string.Empty;
|
||||
ChangedFields = new List<DiffField>().AsReadOnly();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Create a new DiffPreview
|
||||
/// </summary>
|
||||
public DiffPreview(
|
||||
string operation,
|
||||
string entityType,
|
||||
Guid? entityId,
|
||||
string? entityKey,
|
||||
string? beforeData,
|
||||
string? afterData,
|
||||
IReadOnlyList<DiffField>? changedFields = null)
|
||||
{
|
||||
// Validation
|
||||
if (string.IsNullOrWhiteSpace(operation))
|
||||
throw new ArgumentException("Operation cannot be empty", nameof(operation));
|
||||
|
||||
if (string.IsNullOrWhiteSpace(entityType))
|
||||
throw new ArgumentException("EntityType cannot be empty", nameof(entityType));
|
||||
|
||||
// Normalize operation to uppercase
|
||||
operation = operation.ToUpperInvariant();
|
||||
|
||||
// Validate operation type
|
||||
if (operation != "CREATE" && operation != "UPDATE" && operation != "DELETE")
|
||||
throw new ArgumentException(
|
||||
"Operation must be CREATE, UPDATE, or DELETE",
|
||||
nameof(operation));
|
||||
|
||||
// Validate operation-specific requirements
|
||||
if (operation == "UPDATE" && entityId == null)
|
||||
throw new ArgumentException(
|
||||
"UPDATE operation requires EntityId",
|
||||
nameof(entityId));
|
||||
|
||||
if (operation == "UPDATE" && (changedFields == null || changedFields.Count == 0))
|
||||
throw new ArgumentException(
|
||||
"UPDATE operation must have at least one changed field",
|
||||
nameof(changedFields));
|
||||
|
||||
if (operation == "DELETE" && entityId == null)
|
||||
throw new ArgumentException(
|
||||
"DELETE operation requires EntityId",
|
||||
nameof(entityId));
|
||||
|
||||
if (operation == "CREATE" && string.IsNullOrWhiteSpace(afterData))
|
||||
throw new ArgumentException(
|
||||
"CREATE operation requires AfterData",
|
||||
nameof(afterData));
|
||||
|
||||
Operation = operation;
|
||||
EntityType = entityType;
|
||||
EntityId = entityId;
|
||||
EntityKey = entityKey;
|
||||
BeforeData = beforeData;
|
||||
AfterData = afterData;
|
||||
ChangedFields = changedFields ?? new List<DiffField>().AsReadOnly();
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Factory method to create a CREATE operation diff
|
||||
/// </summary>
|
||||
public static DiffPreview ForCreate(
|
||||
string entityType,
|
||||
string afterData,
|
||||
string? entityKey = null)
|
||||
{
|
||||
return new DiffPreview(
|
||||
operation: "CREATE",
|
||||
entityType: entityType,
|
||||
entityId: null,
|
||||
entityKey: entityKey,
|
||||
beforeData: null,
|
||||
afterData: afterData,
|
||||
changedFields: null);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Factory method to create an UPDATE operation diff
|
||||
/// </summary>
|
||||
public static DiffPreview ForUpdate(
|
||||
string entityType,
|
||||
Guid entityId,
|
||||
string beforeData,
|
||||
string afterData,
|
||||
IReadOnlyList<DiffField> changedFields,
|
||||
string? entityKey = null)
|
||||
{
|
||||
return new DiffPreview(
|
||||
operation: "UPDATE",
|
||||
entityType: entityType,
|
||||
entityId: entityId,
|
||||
entityKey: entityKey,
|
||||
beforeData: beforeData,
|
||||
afterData: afterData,
|
||||
changedFields: changedFields);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Factory method to create a DELETE operation diff
|
||||
/// </summary>
|
||||
public static DiffPreview ForDelete(
|
||||
string entityType,
|
||||
Guid entityId,
|
||||
string beforeData,
|
||||
string? entityKey = null)
|
||||
{
|
||||
return new DiffPreview(
|
||||
operation: "DELETE",
|
||||
entityType: entityType,
|
||||
entityId: entityId,
|
||||
entityKey: entityKey,
|
||||
beforeData: beforeData,
|
||||
afterData: null,
|
||||
changedFields: null);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Value object equality - compare all atomic values
|
||||
/// </summary>
|
||||
protected override IEnumerable<object> GetAtomicValues()
|
||||
{
|
||||
yield return Operation;
|
||||
yield return EntityType;
|
||||
yield return EntityId ?? Guid.Empty;
|
||||
yield return EntityKey ?? string.Empty;
|
||||
yield return BeforeData ?? string.Empty;
|
||||
yield return AfterData ?? string.Empty;
|
||||
|
||||
foreach (var field in ChangedFields)
|
||||
yield return field;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Check if this is a CREATE operation
|
||||
/// </summary>
|
||||
public bool IsCreate() => Operation == "CREATE";
|
||||
|
||||
/// <summary>
|
||||
/// Check if this is an UPDATE operation
|
||||
/// </summary>
|
||||
public bool IsUpdate() => Operation == "UPDATE";
|
||||
|
||||
/// <summary>
|
||||
/// Check if this is a DELETE operation
|
||||
/// </summary>
|
||||
public bool IsDelete() => Operation == "DELETE";
|
||||
|
||||
/// <summary>
|
||||
/// Get a human-readable summary of the change
|
||||
/// </summary>
|
||||
public string GetSummary()
|
||||
{
|
||||
var identifier = EntityKey ?? EntityId?.ToString() ?? "new entity";
|
||||
return $"{Operation} {EntityType} ({identifier})";
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Get the count of changed fields
|
||||
/// </summary>
|
||||
public int GetChangedFieldCount() => ChangedFields.Count;
|
||||
}
|
||||
@@ -0,0 +1,32 @@
|
||||
namespace ColaFlow.Modules.Mcp.Domain.ValueObjects;
|
||||
|
||||
/// <summary>
|
||||
/// Status of a pending change in the approval workflow
|
||||
/// </summary>
|
||||
public enum PendingChangeStatus
|
||||
{
|
||||
/// <summary>
|
||||
/// The change is pending approval from a human user
|
||||
/// </summary>
|
||||
PendingApproval = 0,
|
||||
|
||||
/// <summary>
|
||||
/// The change has been approved and is ready to be applied
|
||||
/// </summary>
|
||||
Approved = 1,
|
||||
|
||||
/// <summary>
|
||||
/// The change has been rejected by a human user
|
||||
/// </summary>
|
||||
Rejected = 2,
|
||||
|
||||
/// <summary>
|
||||
/// The change has expired (24 hours passed without approval)
|
||||
/// </summary>
|
||||
Expired = 3,
|
||||
|
||||
/// <summary>
|
||||
/// The change has been successfully applied to the system
|
||||
/// </summary>
|
||||
Applied = 4
|
||||
}
|
||||
@@ -0,0 +1,22 @@
|
||||
namespace ColaFlow.Modules.Mcp.Domain.ValueObjects;
|
||||
|
||||
/// <summary>
|
||||
/// Status of a task lock for concurrency control
|
||||
/// </summary>
|
||||
public enum TaskLockStatus
|
||||
{
|
||||
/// <summary>
|
||||
/// The lock is currently active and held by an agent or user
|
||||
/// </summary>
|
||||
Active = 0,
|
||||
|
||||
/// <summary>
|
||||
/// The lock has been explicitly released
|
||||
/// </summary>
|
||||
Released = 1,
|
||||
|
||||
/// <summary>
|
||||
/// The lock has expired (5 minutes passed without activity)
|
||||
/// </summary>
|
||||
Expired = 2
|
||||
}
|
||||
Reference in New Issue
Block a user