---
phase: 03-agent-registry-sse-push
verified: 2026-03-11T19:30:00Z
status: passed
score: 14/14 must-haves verified
re_verification: false
---

# Phase 3: Agent Registry + SSE Push Verification Report

**Phase Goal:** Agent lifecycle management (LIVE/STALE/DEAD), SSE push for config/commands
**Verified:** 2026-03-11
**Status:** PASSED
**Re-verification:** No — initial verification

---

## Goal Achievement

### Observable Truths (Plan 01)

| # | Truth | Status | Evidence |
|---|-------|--------|----------|
| 1 | Agent can register via POST /api/v1/agents/register and receive agentId + sseEndpoint + heartbeatIntervalMs | VERIFIED | `AgentRegistrationController.register()` returns all three fields; IT test `registerNewAgent_returns200WithAgentIdAndSseEndpoint` asserts them |
| 2 | Re-registration with same agentId resumes LIVE state, updates metadata | VERIFIED | `AgentRegistryService.register()` uses `agents.compute()` with existing-check; IT test `reRegisterSameAgent_returns200WithLiveState` passes |
| 3 | Agent can send heartbeat via POST /{id}/heartbeat — 200 for known, 404 for unknown | VERIFIED | `AgentRegistrationController.heartbeat()` returns 404 if `registryService.heartbeat()` returns false; both paths covered by IT tests |
| 4 | Server transitions LIVE->STALE after 90s, STALE->DEAD 5min after staleTransitionTime | VERIFIED | `AgentRegistryService.checkLifecycle()` implements both transitions with threshold comparison; unit tests `liveAgentBeyondStaleThreshold_transitionsToStale` and `staleAgentBeyondDeadThreshold_transitionsToDead` pass with 1ms thresholds |
| 5 | GET /api/v1/agents returns all agents, filterable by ?status= | VERIFIED | `AgentRegistrationController.listAgents()` calls `findByState()` or `findAll()`; IT tests cover filter, all-list, and invalid-status=400 |

### Observable Truths (Plan 02)

| # | Truth | Status | Evidence |
|---|-------|--------|----------|
| 6 | Registered agent can open SSE stream at GET /{id}/events and receive events | VERIFIED | `AgentSseController.events()` calls `connectionManager.connect()` returning `SseEmitter(Long.MAX_VALUE)`; IT test `sseConnect_registeredAgent_returnsEventStream` asserts 200 |
| 7 | Server pushes config-update events to agent's SSE stream | VERIFIED | `AgentCommandController` -> `registryService.addCommand()` -> `SseConnectionManager.onCommandReady()` -> `sendEvent()` with event name `config-update`; IT test `configUpdateDelivery_receivedViaSseStream` asserts `event:config-update` and data in stream |
| 8 | Server pushes deep-trace commands with correlationId in payload | VERIFIED | Same pipeline with `deep-trace` event type; IT test `deepTraceDelivery_receivedViaSseStream` asserts `event:deep-trace` and `test-123` in stream |
| 9 | Server pushes replay commands | VERIFIED | Same pipeline with `replay` event type; IT test `replayDelivery_receivedViaSseStream` asserts `event:replay` and `ex-456` in stream |
| 10 | Commands can target all agents in a group via POST /groups/{group}/commands | VERIFIED | `AgentCommandController.sendGroupCommand()` filters LIVE agents by group; IT test `sendGroupCommand_returns202WithTargetCount` asserts targetCount=2 for 2 agents in group |
| 11 | Commands can be broadcast to all live agents via POST /commands | VERIFIED | `AgentCommandController.broadcastCommand()` uses `findByState(LIVE)`; IT test `broadcastCommand_returns202WithLiveAgentCount` asserts targetCount >= 1 |
| 12 | SSE stream receives ping keepalive comment every 15s (1s in tests) | VERIFIED | `SseConnectionManager.pingAll()` sends `SseEmitter.event().comment("ping")`; scheduled at `${agent-registry.ping-interval-ms:15000}`; test config sets 1000ms; IT test `pingKeepalive_receivedViaSseStream` asserts `:ping` in stream |
| 13 | SSE events include event ID for Last-Event-ID reconnection (no replay) | VERIFIED | `SseConnectionManager.sendEvent()` sets `.id(eventId)` where eventId is command UUID; `AgentSseController` accepts `Last-Event-ID` header and logs at debug (no replay per decision); IT test `lastEventIdHeader_connectionSucceeds` asserts 200 |
| 14 | Agent can acknowledge command via POST /{id}/commands/{commandId}/ack | VERIFIED | `AgentCommandController.acknowledgeCommand()` calls `registryService.acknowledgeCommand()`; IT tests cover 200 on success and 404 on unknown command |

**Score: 14/14 truths verified**

---

## Required Artifacts

### Plan 01 Artifacts

| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `cameleer-server-core/src/main/java/com/cameleer/server/core/agent/AgentRegistryService.java` | Registration, heartbeat, lifecycle, find/filter, commands | VERIFIED | 281 lines; full implementation with ConcurrentHashMap, compute-based atomic swaps, eventListener bridge |
| `cameleer-server-core/src/main/java/com/cameleer/server/core/agent/AgentInfo.java` | Immutable record with all fields and wither methods | VERIFIED | 63 lines; record with 10 fields and 5 wither-style methods |
| `cameleer-server-app/src/main/java/com/cameleer/server/app/controller/AgentRegistrationController.java` | POST /register, POST /{id}/heartbeat, GET /agents | VERIFIED | 153 lines; all three endpoints implemented with OpenAPI annotations |
| `cameleer-server-app/src/main/java/com/cameleer/server/app/agent/AgentLifecycleMonitor.java` | @Scheduled LIVE->STALE->DEAD transitions | VERIFIED | 37 lines; calls `registryService.checkLifecycle()` and `expireOldCommands()` on schedule |

### Plan 02 Artifacts

| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `cameleer-server-app/src/main/java/com/cameleer/server/app/agent/SseConnectionManager.java` | Per-agent SseEmitter management, event sending, ping | VERIFIED | 158 lines; implements AgentEventListener, reference-equality removal, @PostConstruct registration |
| `cameleer-server-app/src/main/java/com/cameleer/server/app/controller/AgentSseController.java` | GET /{id}/events SSE endpoint | VERIFIED | 67 lines; checks agent exists, delegates to connectionManager.connect() |
| `cameleer-server-app/src/main/java/com/cameleer/server/app/controller/AgentCommandController.java` | POST commands (single/group/broadcast) + ack | VERIFIED | 182 lines; all four endpoints implemented |

### Supporting Artifacts (confirmed present)

| Artifact | Status |
|----------|--------|
| `AgentState.java` (LIVE, STALE, DEAD) | VERIFIED |
| `AgentCommand.java` (record with withStatus) | VERIFIED |
| `CommandStatus.java` (PENDING/DELIVERED/ACKNOWLEDGED/EXPIRED) | VERIFIED |
| `CommandType.java` (CONFIG_UPDATE/DEEP_TRACE/REPLAY) | VERIFIED |
| `AgentEventListener.java` (interface) | VERIFIED |
| `AgentRegistryConfig.java` (@ConfigurationProperties) | VERIFIED — all 6 timing properties with defaults |
| `AgentRegistryBeanConfig.java` (@Configuration) | VERIFIED — creates AgentRegistryService with config values |
| `application.yml` | VERIFIED — agent-registry section present; `spring.mvc.async.request-timeout: -1` present |
| `application-test.yml` | VERIFIED — `agent-registry.ping-interval-ms: 1000` for fast SSE test assertions |
| `CameleerServerApplication.java` | VERIFIED — `AgentRegistryConfig.class` added to `@EnableConfigurationProperties` |

---

## Key Link Verification

### Plan 01 Key Links

| From | To | Via | Status | Evidence |
|------|----|-----|--------|---------|
| `AgentRegistrationController` | `AgentRegistryService` | Constructor injection | WIRED | Line 45-51: constructor accepts `registryService`; lines 88, 106, 125 call `registryService.register()`, `.heartbeat()`, `.findByState()`/`.findAll()` |
| `AgentLifecycleMonitor` | `AgentRegistryService` | @Scheduled lifecycle check | WIRED | Line 27-35: `@Scheduled` method calls `registryService.checkLifecycle()` and `registryService.expireOldCommands()` |
| `AgentRegistryBeanConfig` | `AgentRegistryService` | @Bean factory method | WIRED | Line 17: `new AgentRegistryService(config.getStaleThresholdMs(), ...)` |

### Plan 02 Key Links

| From | To | Via | Status | Evidence |
|------|----|-----|--------|---------|
| `AgentCommandController` | `SseConnectionManager` | sendEvent for command delivery | WIRED | Line 76: `connectionManager.isConnected(id)` for status reporting; actual delivery goes via event listener chain |
| `AgentCommandController` | `AgentRegistryService` | addCommand + findByState | WIRED | Lines 74, 95-103, 122-127: `registryService.addCommand()`, `registryService.findAll()`, `registryService.findByState()`, `registryService.acknowledgeCommand()` |
| `SseConnectionManager` | `AgentEventListener` | implements interface | WIRED | Line 27: `implements AgentEventListener`; line 137: `@Override onCommandReady()` |
| `SseConnectionManager` | `AgentRegistryService` | @PostConstruct setEventListener | WIRED | Line 41-44: `registryService.setEventListener(this)` in `@PostConstruct init()` |
| `AgentSseController` | `SseConnectionManager` | connect() returns SseEmitter | WIRED | Line 65: `return connectionManager.connect(id)` |

---

## Requirements Coverage

| Requirement | Source Plan | Description | Status | Evidence |
|-------------|-------------|-------------|--------|---------|
| AGNT-01 (#13) | 03-01 | Agent registers via POST /api/v1/agents/register, receives JWT + server public key | SATISFIED | Registration endpoint works; `serverPublicKey` placeholder returns `null` (JWT/key deferred to Phase 4 per plan, endpoint structure present) |
| AGNT-02 (#14) | 03-01 | Server maintains agent registry with LIVE/STALE/DEAD lifecycle based on heartbeat timing | SATISFIED | `AgentRegistryService.checkLifecycle()` + `AgentLifecycleMonitor` implement full LIVE->STALE->DEAD with configurable thresholds |
| AGNT-03 (#15) | 03-01 | Agent sends heartbeat via POST /api/v1/agents/{id}/heartbeat every 30s | SATISFIED | Endpoint implemented; server advertises `heartbeatIntervalMs: 30000` in registration response |
| AGNT-04 (#16) | 03-02 | Server pushes config-update events to agents via SSE with Ed25519 signature | SATISFIED* | SSE push for config-update implemented; Ed25519 signature deferred to Phase 4 (SECU-04); command payload pushed as raw JSON |
| AGNT-05 (#17) | 03-02 | Server pushes deep-trace commands to agents via SSE for specific correlationIds | SATISFIED | `deep-trace` event type implemented; correlationId included in payload JSON |
| AGNT-06 (#18) | 03-02 | Server pushes replay commands to agents via SSE with signed replay tokens | SATISFIED* | `replay` event type implemented; signing deferred to Phase 4 (SECU-04) |
| AGNT-07 (#19) | 03-02 | SSE connection includes ping keepalive and supports Last-Event-ID reconnection | SATISFIED | Ping comment every 15s (1s in tests); Last-Event-ID header accepted; event IDs set on all events |

_* AGNT-04 and AGNT-06 require Ed25519 signing per the requirement text. The signing is explicitly deferred to Phase 4 (SECU-03/SECU-04). The SSE push infrastructure is complete and functional. The signing gap is tracked in Phase 4's scope, not a Phase 3 failure._

**No orphaned requirements** — all 7 AGNT requirements mapped to this phase appear in plan frontmatter and are accounted for.

---

## Anti-Patterns Found

| File | Pattern | Severity | Impact |
|------|---------|----------|--------|
| `AgentRegistrationController.java` line 96 | `serverPublicKey: null` placeholder | INFO | Intentional Phase 4 placeholder; no functional impact on Phase 3 goals |

No TODOs, FIXMEs, empty implementations, or stub returns found in any Phase 3 implementation files.

---

## Commit Verification

| Commit | Plan | Description | Verified |
|--------|------|-------------|---------|
| `4cd7ed9` | 03-01 | Failing tests (TDD RED) | Yes — in git log |
| `61f3902` | 03-01 | Agent registry service implementation (TDD GREEN) | Yes — in git log |
| `0372be2` | 03-01 | Controllers, config, lifecycle monitor | Yes — in git log |
| `5746886` | 03-02 | SseConnectionManager, SSE controller, command controller | Yes — in git log |
| `a1909ba` | 03-02 | SSE + command integration tests | Yes — in git log |

---

## Human Verification Required

None. All automated checks pass. The SSE delivery path (command via HTTP -> SSE event on stream) is verified by integration tests using async `java.net.http.HttpClient` with `CountDownLatch` + `Awaitility` assertions.

---

## Summary

Phase 3 goal is fully achieved. The implementation delivers:

1. **Agent lifecycle management** — `AgentRegistryService` (plain Java, core module) implements full LIVE/STALE/DEAD state machine with configurable thresholds. `AgentLifecycleMonitor` drives periodic checks via `@Scheduled`. 23 unit tests cover all lifecycle transitions.

2. **REST endpoints** — Registration (POST /register), heartbeat (POST /{id}/heartbeat), and listing (GET /agents with ?status= filter) are fully implemented with OpenAPI documentation. 7 integration tests verify all paths including 400 for invalid filter.

3. **SSE push** — `SseConnectionManager` manages per-agent `SseEmitter` instances, implements `AgentEventListener` interface for zero-coupling event delivery from core to app layer. Ping keepalive at 15s (configurable). SSE events path excluded from `ProtocolVersionInterceptor` for EventSource client compatibility.

4. **Command targeting** — Single agent, group, and broadcast targeting all implemented. Command acknowledgement endpoint complete. Command queue with PENDING/DELIVERED/ACKNOWLEDGED/EXPIRED status tracking.

5. **Tests** — 23 unit tests + 7 + 13 integration tests (7 SSE + 6 command controller) = 43 tests covering Phase 3 code. Full suite of 71 tests passes per Summary.

The `serverPublicKey: null` placeholder and unsigned SSE payloads are intentional — Ed25519 signing is Phase 4 scope (SECU-03, SECU-04). The SSE transport infrastructure is complete and ready to carry signed payloads in Phase 4.

---

_Verified: 2026-03-11_
_Verifier: Claude (gsd-verifier)_
