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Gateway Connection Lifecycle Management

Module

Gateway

Status

VERIFIED

Description

HELLO frame processing for microservice registration, connection lifecycle management with cleanup on disconnect, and ConnectionManager hosted service for monitoring active connections.

Implementation Details

  • Gateway hosted service: src/Gateway/StellaOps.Gateway.WebService/Services/GatewayHostedService.cs -- connection lifecycle management background service (533 lines)
  • Health monitoring: src/Gateway/StellaOps.Gateway.WebService/Services/GatewayHealthMonitorService.cs -- monitors active connections, detects stale instances (107 lines)
  • Metrics: src/Gateway/StellaOps.Gateway.WebService/Services/GatewayMetrics.cs -- connection metrics tracking (40 lines)
  • Configuration: src/Gateway/StellaOps.Gateway.WebService/Configuration/GatewayOptions.cs, GatewayOptionsValidator.cs
  • Source: batch_51/file_22.md

E2E Test Plan

  • Verify HELLO frame processing registers new microservice connections
  • Test connection cleanup on client disconnect
  • Verify GatewayHealthMonitorService detects stale connections
  • 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:
    • GatewayHostedService: Non-trivial (533 lines). HandleHelloAsync() parses/validates HELLO payloads, builds connection state, registers in routing state. HandleDisconnect() removes connections, invalidates caches, cleans claims.
    • GatewayHealthMonitorService: Real BackgroundService checking stale/degraded connections based on configurable thresholds.
    • Tests: Config/integration tests exist (GatewayOptionsValidatorTests, GatewayIntegrationTests). Caveat: no dedicated unit tests for HELLO frame validation or heartbeat handling logic paths.
  • Verdict: PASS

Tier 2 Recheck (2026-02-10)

  • Run ID: run-003
  • Result: PASS
  • What was rechecked: Added deterministic lifecycle regression coverage for GatewayHostedService HELLO/heartbeat/disconnect behavior and reran full Gateway suite.
  • Evidence: docs/qa/feature-checks/runs/gateway/gateway-connection-lifecycle-management/run-003/tier2-integration-check.json

Recheck (run-005)

  • Date: 2026-02-10
  • Result: PASS
  • Verification: Connection lifecycle regression coverage and hosted-service state transitions remain stable.
  • Tests: Gateway.WebService.Tests 259/259, Router Gateway WebService.Tests 160/160, Router.Gateway.Tests 13/13 (432 total).
  • Evidence: docs/qa/feature-checks/runs/gateway/gateway-connection-lifecycle-management/run-005/tier2-integration-check.json

Recheck (Run-006)

  • Verified: 2026-02-10
  • Method: Tier 2 replay + full Gateway/Router matrix.
  • Tests: PASS (src/Gateway/__Tests/StellaOps.Gateway.WebService.Tests: 259/259; src/Router/__Tests/StellaOps.Gateway.WebService.Tests: 160/160; src/Router/__Tests/StellaOps.Router.Gateway.Tests: 13/13).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/gateway/gateway-connection-lifecycle-management/run-006/tier2-integration-check.json
  • Outcome: Checked Gateway feature behavior remains stable in follow-up replay.

Recheck (Run-007)

  • Verified: 2026-02-10
  • Method: Tier 2 integration replay.
  • Tests: PASS (src/Gateway/__Tests/StellaOps.Gateway.WebService.Tests: 259/259; src/Router/__Tests/StellaOps.Gateway.WebService.Tests: 160/160; src/Router/__Tests/StellaOps.Router.Gateway.Tests: 13/13).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/gateway/gateway-connection-lifecycle-management/run-007/tier2-integration-check.json
  • Outcome: Gateway/Router behavior for this checked feature remains healthy.

Recheck (Run-008)

  • Verified: 2026-02-10
  • Method: Tier 2 replay with deterministic Gateway+Router suite verification.
  • Tests: PASS (src/Gateway/__Tests/StellaOps.Gateway.WebService.Tests: 259/259; src/Router/__Tests/StellaOps.Gateway.WebService.Tests: 160/160; src/Router/__Tests/StellaOps.Router.Gateway.Tests: 13/13).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/gateway/gateway-connection-lifecycle-management/run-008/tier2-integration-check.json
  • Outcome: Checked gateway behavior remains healthy in continued replay.

Recheck (Run-009)

  • Verified: 2026-02-10
  • Method: Tier 2 replay with deterministic Gateway+Router suite verification.
  • Tests: PASS (src/Gateway/__Tests/StellaOps.Gateway.WebService.Tests: 259/259; src/Router/__Tests/StellaOps.Gateway.WebService.Tests: 160/160; src/Router/__Tests/StellaOps.Router.Gateway.Tests: 13/13).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/gateway/gateway-connection-lifecycle-management/run-009/tier2-integration-check.json
  • Outcome: Checked gateway behavior remains healthy in continued replay.

Recheck (Run-010)

  • Verified: 2026-02-10
  • Method: Tier 2d deterministic integration replay.
  • Tests: PASS (Gateway.WebService.Tests 259/259, Router.Gateway.WebService.Tests 160/160, Router.Gateway.Tests 13/13).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/gateway/gateway-connection-lifecycle-management/run-010/tier2-integration-check.json
  • Outcome: Checked Gateway behavior remains healthy in continued replay.

Recheck (Run-011)

  • Verified: 2026-02-10
  • Method: Tier 2d deterministic integration replay.
  • Tests: PASS (Gateway.WebService 259/259, Router.Gateway.WebService 160/160, Router.Gateway 13/13; total 432/432).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/gateway/gateway-connection-lifecycle-management/run-011/tier2-integration-check.json
  • Outcome: Checked gateway behavior remains healthy in continued replay.

Recheck (Run-012)

  • Verified: 2026-02-10
  • Method: Tier 2d deterministic integration replay.
  • Tests: PASS (Gateway.WebService 259/259, Router.Gateway.WebService 160/160, Router.Gateway 13/13; total 432/432).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/gateway/gateway-connection-lifecycle-management/run-012/tier2-integration-check.json
  • Outcome: Checked gateway behavior remains healthy in continued replay.

Recheck (Run-013 Module Sweep)

  • Verified: 2026-02-11
  • Method: Tier 2a live HTTP replay with fresh request/response evidence + Tier 1 Gateway/Router suite replay.
  • Tests: PASS (Gateway.WebService 259/259, Router.Gateway.WebService 160/160, Router.Gateway 13/13; total 432/432).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/gateway/gateway-connection-lifecycle-management/run-013/tier2-api-check.json.
  • Outcome: Checked gateway behavior remains stable with fresh end-user API transactions in this module-wide sweep.

Recheck (Run-014)

  • Verified: 2026-02-11
  • Method: Tier 2a live HTTP replay on dedicated local port with fresh evidence capture.
  • Tests: PASS (Gateway.WebService 259/259, Router.Gateway.WebService 160/160, Router.Gateway 13/13; total 432/432).
  • Tier 2 Evidence: docs/qa/feature-checks/runs/gateway/gateway-connection-lifecycle-management/run-014/tier2-api-check.json.
  • Captured Requests: /health, /metrics, negative path /__qa_missing_route__ (404), and correlation-id echo probe.
  • Outcome: Connection lifecycle checked behavior remains stable with explicit positive and negative API-path verification.