---
phase: "03-"
plan: 02
subsystem: Gateway
tags: [gateway, domain, yarp]
dependency_graph:
  requires:
    - 03-gateway-cluster-entities
  provides:
    - Extended GwTenantRoute entity
  affects:
    - PlatformDbContext (needs update to remove deleted entity DbSets)
tech_stack:
  added:
    - GwTenantRoute new fields (Methods, Hosts, Headers, LoadBalancingPolicy, AuthorizationPolicy, CorsPolicy, Transforms)
  patterns:
    - Domain-driven design entity extension
key_files:
  created: []
  modified:
    - Fengling.Platform.Domain/AggregatesModel/GatewayAggregate/GwTenantRoute.cs
  deleted:
    - Fengling.Platform.Domain/AggregatesModel/GatewayAggregate/GwTenant.cs
    - Fengling.Platform.Domain/AggregatesModel/GatewayAggregate/GwServiceInstance.cs
decisions:
  - "GwTenant removed - use Platform.Tenant through TenantCode instead"
  - "GwServiceInstance removed - use GwCluster embedded Destination instead"
  - "Extended fields use nullable string types for optional YARP configuration"
metrics:
  duration: ~5 minutes
  completed_date: "2026-03-03"
---

# Phase 03 Plan 02: Gateway Route Update Summary

## One-Liner

Extended GwTenantRoute with YARP matching fields and removed obsolete GwTenant/GwServiceInstance entities.

## Tasks Completed

| Task | Name | Commit | Files |
|------|------|--------|-------|
| 1 | Extend GwTenantRoute fields | 3fbd9d0 | GwTenantRoute.cs |
| 2 | Delete GwTenant entity | 3fbd9d0 | GwTenant.cs |
| 3 | Delete GwServiceInstance entity | 3fbd9d0 | GwServiceInstance.cs |

## Summary

Successfully completed the Domain layer refactoring for Gateway route entities:

- **Extended GwTenantRoute** with new fields for full YARP routing capabilities:
  - `Methods`, `Hosts`, `Headers` - Route matching
  - `LoadBalancingPolicy`, `AuthorizationPolicy`, `CorsPolicy` - Policy configuration
  - `Transforms` - Request/Response transformations

- **Removed obsolete entities**:
  - `GwTenant` - Should use Platform.Tenant aggregate with TenantCode reference instead
  - `GwServiceInstance` - Should use GwCluster embedded Destination collection instead

## Verification

- Domain layer build: **PASSED** (0 errors, 2 warnings)
- Infrastructure layer: **Requires update** - references to deleted entities need cleanup in subsequent plans

## Deviations from Plan

### Infrastructure Layer References

**Found during:** Build verification
**Issue:** Infrastructure layer (PlatformDbContext, InstanceStore, IInstanceStore) still references deleted entities GwTenant and GwServiceInstance
**Impact:** Infrastructure layer will fail to build until updated
**Decision:** Deferred to subsequent plan - the Domain layer changes are complete per plan scope
**Files affected:** PlatformDbContext.cs, IInstanceStore.cs, InstanceStore.cs

## Notes

- The deleted entities were part of the initial Gateway implementation but have been superseded by:
  - Platform.Tenant aggregate for tenant information
  - GwCluster aggregate's embedded Destination collection for service instances
- Infrastructure layer cleanup should be handled in the next plan that covers Infrastructure updates