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Gateway HTTP Middleware Pipeline

Module

Gateway

Status

VERIFIED

Description

Full HTTP middleware pipeline for the Gateway WebService including endpoint resolution, authorization with claims propagation, routing decision, transport dispatch, correlation ID tracking, tenant isolation, health checks, and global error handling.

Implementation Details

  • Authorization: src/Gateway/StellaOps.Gateway.WebService/Authorization/AuthorizationMiddleware.cs -- endpoint authorization (101 lines)
  • Claims propagation: src/Gateway/StellaOps.Gateway.WebService/Middleware/ClaimsPropagationMiddleware.cs -- propagates authenticated claims to downstream services (89 lines)
  • Correlation ID: src/Gateway/StellaOps.Gateway.WebService/Middleware/CorrelationIdMiddleware.cs -- request correlation tracking (63 lines)
  • Routing: src/Gateway/StellaOps.Gateway.WebService/Middleware/RequestRoutingMiddleware.cs -- route resolution and dispatch (23 lines)
  • Routes: src/Gateway/StellaOps.Gateway.WebService/Middleware/GatewayRoutes.cs -- route definitions (35 lines)
  • Health checks: src/Gateway/StellaOps.Gateway.WebService/Middleware/HealthCheckMiddleware.cs (91 lines)
  • Identity header policy: src/Gateway/StellaOps.Gateway.WebService/Middleware/IdentityHeaderPolicyMiddleware.cs -- identity header enforcement (335 lines)
  • Sender constraints: src/Gateway/StellaOps.Gateway.WebService/Middleware/SenderConstraintMiddleware.cs (216 lines)
  • Tenant isolation: src/Gateway/StellaOps.Gateway.WebService/Middleware/TenantMiddleware.cs (41 lines)
  • Context keys: src/Gateway/StellaOps.Gateway.WebService/Middleware/GatewayContextKeys.cs (14 lines)
  • Security: src/Gateway/StellaOps.Gateway.WebService/Security/AllowAllAuthenticationHandler.cs (32 lines)
  • Source: batch_51/file_21.md

E2E Test Plan

  • Verify middleware pipeline executes in correct order
  • Test authorization middleware blocks unauthorized requests
  • Verify correlation IDs propagate through gateway to downstream services
  • Test tenant isolation prevents cross-tenant access
  • Verify edge cases and error handling

Verification

  • Run ID: run-002
  • Date: 2026-02-09
  • Method: Tier 1 code review + Tier 2d integration tests
  • Build: PASS (0 errors, 0 warnings)
  • Tests: PASS (202/202 gateway tests pass)
  • Code Review:
    • All 11 middleware classes exist with real implementations (1,000+ total lines).
    • 7 test files with 50+ test methods: AuthorizationMiddlewareTests (8 tests), ClaimsPropagationMiddlewareTests (8 tests), CorrelationIdMiddlewareTests (4 tests), GatewayRoutesTests (6 tests), TenantMiddlewareTests (6 tests), IdentityHeaderPolicyMiddlewareTests (18+ tests), GatewayIntegrationTests (11 tests).
    • All tests assert meaningful outcomes (403 status codes, header values, claim matching, tenant extraction).
  • Verdict: PASS