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Agent Manager with Certificate-Based Registration and Heartbeat

Module

ReleaseOrchestrator

Status

IMPLEMENTED

Description

Agent registration system with one-time token generation, certificate issuance, heartbeat processing, capability registration, and agent lifecycle management (active/inactive/revoked). Manages secure deployment executors on target hosts.

Implementation Details

  • Modules: src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Agent/
  • Key Classes:
    • AgentManager (src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Agent/Manager/AgentManager.cs) - server-side agent lifecycle management (register, deactivate, revoke)
    • HeartbeatProcessor (src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Agent/Heartbeat/HeartbeatProcessor.cs) - processes agent heartbeats and updates status
    • HeartbeatTimeoutMonitor (src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Agent/Heartbeat/HeartbeatTimeoutMonitor.cs) - detects agents that miss heartbeat deadlines
    • RegistrationTokenService (src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Agent/Registration/RegistrationTokenService.cs) - generates one-time registration tokens
    • StubAgentCertificateService (src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Agent/Certificate/StubAgentCertificateService.cs) - certificate issuance for agent registration
    • InMemoryAgentStore (src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Agent/Store/InMemoryAgentStore.cs) - in-memory agent state store
  • Models: Agent, AgentHeartbeat, AgentCertificate, AgentTask, RegistrationToken (src/ReleaseOrchestrator/__Libraries/StellaOps.ReleaseOrchestrator.Agent/Models/)
  • Interfaces: IAgentManager, IHeartbeatProcessor, IAgentCertificateService, IAgentStore
  • Source: SPRINT_20260110_103_003_ENVMGR_agent_manager.md

E2E Test Plan

  • Generate a registration token and use it to register a new agent, verifying certificate is issued
  • Verify heartbeat processing: agent sends heartbeat and HeartbeatProcessor updates agent status to active
  • Verify timeout detection: stop sending heartbeats and confirm HeartbeatTimeoutMonitor marks agent as inactive
  • Verify lifecycle transitions: register, deactivate, and revoke an agent through the full lifecycle
  • Verify one-time token: attempt to reuse a registration token and confirm it is rejected