feat(backend): implement agent heartbeat monitoring and automatic dead-agent cleanup (#170) - #211
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…anup (Epta-Node#170) - Add POST /api/agents/:id/heartbeat endpoint with rate limiting - Add updateLastSeen, markStaleAgents, and deleteOfflineAgents DB queries - Add heartbeat cleanup service (mark offline after 5m, delete after 24h) - Add environment configuration variables - Update frontend useAgentRegistry for real-time auto-refresh - Add unit tests for heartbeat endpoint and cleanup service
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devJaja
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July 29, 2026 20:22
devJaja
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Solid Implementation @morelucks
LGTM
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Summary
This PR implements agent heartbeat monitoring and automatic dead-agent cleanup so that the agent registry reflects real-time online/offline status.
Closes #170
Key Changes
POST /api/agents/:id/heartbeatendpoint inbackend/src/api/routes/agents.tswith per-IP rate limiting (heartbeatRateLimitMiddleware).updateLastSeen(agentId),markStaleAgents(staleThresholdMinutes), anddeleteOfflineAgents(offlineThresholdHours)methods tobackend/src/db/agents.ts.backend/src/services/heartbeat.tsto periodically mark agents offline when inactive for 5 minutes and automatically delete offline agents after 24 hours.HEARTBEAT_INTERVAL_MS,HEARTBEAT_STALE_THRESHOLD_MINUTES, andAGENT_OFFLINE_DELETE_HOURSinbackend/src/config/index.tsandbackend/.env.example.createAppand graceful shutdown handlers inbackend/src/api/app.ts.useAgentRegistry.tsandagentRegistry.tsto auto-refresh status on window focus and status transitions.backend/tests/heartbeat.test.tsverifying all heartbeat and cleanup operations.Verification