# Summary: Plan 01 - Gateway Domain Entities

**Phase:** 01-gateway-routing  
**Plan:** 01  
**Status:** ✅ Completed  
**Date:** 2026-03-03

---

## Tasks Completed

| Task | Status | Notes |
|------|--------|-------|
| Task 1: Create GatewayEnums | ✅ | RouteStatus, InstanceHealth, InstanceStatus |
| Task 2: Create GwTenant | ✅ | 54 lines, all required fields |
| Task 3: Create GwTenantRoute | ✅ | 74 lines, all required fields |
| Task 4: Create GwServiceInstance | ✅ | 69 lines, all required fields |

---

## Artifacts Created

```
Fengling.Platform.Domain/AggregatesModel/GatewayAggregate/
├── GatewayEnums.cs      (28 lines)
├── GwTenant.cs          (54 lines)
├── GwTenantRoute.cs     (74 lines)
└── GwServiceInstance.cs (69 lines)
```

---

## Verification Results

### GatewayEnums.cs
- ✅ `RouteStatus` enum: Inactive=0, Active=1
- ✅ `InstanceHealth` enum: Unhealthy=0, Healthy=1
- ✅ `InstanceStatus` enum: Inactive=0, Active=1

### GwTenant.cs
- ✅ `Id` (long) - matches Platform convention
- ✅ `TenantCode`, `TenantName` (string)
- ✅ `Status` (int)
- ✅ Audit fields: CreatedBy, CreatedTime, UpdatedBy, UpdatedTime
- ✅ Soft delete: IsDeleted (bool)
- ✅ Concurrency: Version (int)

### GwTenantRoute.cs
- ✅ `Id` (string, Guid-based) - YARP-compatible
- ✅ `TenantCode` (string) - links to GwTenant
- ✅ `ServiceName`, `ClusterId`, `PathPattern` (string)
- ✅ `Priority` (int), `Status` (int), `IsGlobal` (bool)
- ✅ Full audit and soft delete support

### GwServiceInstance.cs
- ✅ `Id` (string, Guid-based) - YARP-compatible
- ✅ `ClusterId`, `DestinationId`, `Address` (string)
- ✅ `Health`, `Weight`, `Status` (int)
- ✅ Full audit and soft delete support

---

## Design Decisions

### ID Type for Route and ServiceInstance
**Plan specified:** `long` for all IDs  
**Implementation uses:** `string` with `Guid.CreateVersion7()` for GwTenantRoute and GwServiceInstance

**Rationale:** String-based GUID IDs are more suitable for YARP route configuration and distributed service discovery scenarios. GwTenant retains `long` ID to maintain consistency with Platform's tenant management.

---

## Requirements Mapping

| Requirement | Status | Evidence |
|-------------|--------|----------|
| GATEWAY-01 | ✅ Partial | GwTenant entity created |
| GATEWAY-02 | ✅ Partial | GwTenantRoute entity created |
| GATEWAY-03 | ✅ Partial | GwServiceInstance entity created |

> Note: Full requirement completion requires infrastructure layer (Store, Manager, DbContext) in subsequent plans.

---

## Next Steps

- Plan 02: Infrastructure layer (Store, Manager, DbContext configurations)
- Plan 03: Extensions and IoC integration