openclaw - 💡(How to fix) Fix [Bug]: Subagent sessions accumulate indefinitely in sessions.json — no automatic cleanup after completion [1 comments, 2 participants]

1. A subagent session is spawned via (runtime=subagent, no explicit sessionKey)
2. The subagent completes its work and presumably terminates
3. Result: The subagent entry persists indefinitely in

TL;DR

Implement a cleanup handler to automatically remove completed subagent sessions from sessions.json.

Guidance

• Investigate the subagent termination process to identify why the cleanup handler is not triggered, focusing on the interaction between the subagent and the session store.
• Verify that the subagent process is properly exiting and that its completion is correctly signaled to the session store.
• Consider implementing a periodic task to clean up stale subagent entries from sessions.json as a temporary workaround until a permanent fix is in place.
• Review the session store management for other types of sessions (e.g., cron execution records, dream sessions) to identify potential patterns or mechanisms that could be applied to subagent sessions.

Example

# Example of a periodic cleanup task
import json
import schedule
import time

def cleanup_subagent_sessions():
    with open('sessions.json') as f:
        data = json.load(f)
    for k in list(data.keys()):
        if ':subagent:' in k:
            del data[k]
    with open('sessions.json', 'w') as f:
        json.dump(data, f)

schedule.every(1).day.at("00:00").do(cleanup_subagent_sessions)  # Run daily at midnight

while True:
    schedule.run_pending()
    time.sleep(1)

Notes

The provided workaround is manual and not sustainable, so a more automated solution is needed. The example cleanup task is a basic illustration and may need to be adapted to the specific requirements and constraints of the system.

Recommendation

Apply a workaround, such as the periodic cleanup task, until a permanent fix can be implemented to automatically remove completed subagent sessions from sessions.json. This will help mitigate the issue of growing session store size.