feat(gateway): add crash checkpoint for precise session recovery#8143
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chinadbo wants to merge 3 commits into
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feat(gateway): add crash checkpoint for precise session recovery#8143chinadbo wants to merge 3 commits into
chinadbo wants to merge 3 commits into
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This would solve session crash issues, please merge! |
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Persist in-flight agent runs to agent_checkpoints.json so that on restart the gateway can precisely identify interrupted sessions instead of relying solely on the suspend_recently_active time-window heuristic. Sessions found in the checkpoint are suspended and the checkpoint is cleared; the time-window heuristic remains as fallback.
- Fix startup ImportError: replace non-existent HERMES_HOME import with module-level _hermes_home variable (gateway was failing to start) - Gate mark_completed on generation ownership: stale runs no longer clear the checkpoint entry when a newer generation owns the slot - Add fsync + unique mkstemp to _write: checkpoint is now durable across power failures and safe under concurrent gateway instances - Add defensive mark_completed on /stop sentinel fast-path for future-proofing if mark_running timing ever shifts
- Clear checkpoint on clean shutdown to prevent stale entries accumulating - Add mark_completed after stale-eviction and interrupt-clear paths - Move tempfile import to module level
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Summary
SessionCrashCheckpointclass that persists in-flight agent runs toagent_checkpoints.jsonsuspend_recently_active()time-window heuristic remains as fallback for sessions not tracked by the checkpointTest plan
tests/gateway/test_session_crash_recovery.py