Mikkel Georgsen
bf64e84eda
Tasks completed: 2/2 - Task 1: Suspend/resume wiring with race locks, startup cleanup, and graceful shutdown - Task 2: /timeout and /sessions commands SUMMARY: .planning/phases/03-lifecycle-management/03-02-SUMMARY.md
124 lines
4.8 KiB
Markdown
124 lines
4.8 KiB
Markdown
---
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phase: 03-lifecycle-management
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plan: 02
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subsystem: bot-lifecycle
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tags: [asyncio, telegram, subprocess-management, idle-timeout, graceful-shutdown]
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# Dependency graph
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requires:
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- phase: 03-01
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provides: SessionIdleTimer class with reset/cancel and PID tracking in ClaudeSubprocess
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provides:
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- Automatic session suspension after idle timeout
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- Transparent session resume with history preservation
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- Race-free suspend/resume via asyncio.Lock per session
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- Orphaned subprocess cleanup at bot startup
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- Graceful shutdown with subprocess termination
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- /timeout command for per-session idle configuration
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- /sessions command for session status overview
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affects: [03-03-output-modes]
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# Tech tracking
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tech-stack:
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added: []
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patterns:
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- "Race prevention via per-session asyncio.Lock for concurrent suspend/resume"
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- "Silent suspension (no Telegram notification) per CONTEXT.md decision"
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- "Resume detection via .claude/ directory existence check"
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- "Idle timer reset in on_complete callback (timer only counts after Claude finishes)"
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key-files:
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created: []
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modified:
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- telegram/bot.py
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key-decisions:
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- "Silent suspension (no Telegram notification) per CONTEXT.md LOCKED decision"
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- "Race prevention via subprocess_locks dict: one asyncio.Lock per session"
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- "Resume shows idle duration if >1 min (e.g., 'Resuming session (idle for 15 min)...')"
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- "Orphaned PID verification via /proc/cmdline check (only kill claude processes)"
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- "Bot shutdown uses post_shutdown callback (python-telegram-bot handles signals)"
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patterns-established:
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- "Per-session locking: subprocess_locks.setdefault(session_name, asyncio.Lock())"
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- "Idle timer lifecycle: create on session spawn, reset in on_complete, cancel on archive"
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- "Resume status message format: 'Resuming session (idle for Xm)...'"
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# Metrics
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duration: 4min
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completed: 2026-02-04
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---
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# Phase 3 Plan 2: Suspend/Resume Implementation Summary
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**Automatic session suspension after 10min idle, transparent resume with full history, race-free with asyncio.Lock per session**
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## Performance
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- **Duration:** 4 min
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- **Started:** 2026-02-04T23:33:30Z
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- **Completed:** 2026-02-04T23:37:56Z
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- **Tasks:** 2
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- **Files modified:** 1
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## Accomplishments
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- Sessions automatically suspend after idle timeout (subprocess terminated, metadata updated, silent)
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- User messages to suspended sessions transparently resume with full history
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- Race condition between timeout-fire and user-message prevented via asyncio.Lock per session
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- Bot startup kills orphaned subprocess PIDs (verified via /proc/cmdline)
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- Bot shutdown terminates all subprocesses gracefully (SIGTERM + timeout + SIGKILL)
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- /timeout command sets per-session idle timeout (1-120 min range)
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- /sessions command lists all sessions with LIVE/IDLE status, persona, and relative last-active time
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## Task Commits
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Each task was committed atomically:
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1. **Task 1: Suspend/resume wiring with race locks, startup cleanup, and graceful shutdown** - `6ebdb4a` (feat)
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- suspend_session() callback for idle timer
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- get_subprocess_lock() helper to prevent races
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- Resume logic in handle_message/handle_photo/handle_document
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- Idle timer reset in on_complete and on user activity
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- cleanup_orphaned_subprocesses() with /proc/cmdline verification
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- post_init() and post_shutdown() lifecycle callbacks
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- Updated new_session, switch_session_cmd, archive_session_cmd, model_cmd
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2. **Task 2: /timeout and /sessions commands** - `06c5246` (feat)
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- timeout_cmd() to set/show per-session idle timeout
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- sessions_cmd() to list all sessions with status
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- Registered both commands in main()
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## Files Created/Modified
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- `telegram/bot.py` - Added suspend/resume lifecycle, idle timers, race locks, startup cleanup, graceful shutdown, /timeout and /sessions commands
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## Decisions Made
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**From plan execution:**
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- Resume status message shows idle duration if >1 min: "Resuming session (idle for 15 min)..."
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- Orphaned subprocess cleanup verifies PID is a claude process via /proc/cmdline before killing
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- Bot shutdown uses post_shutdown callback (python-telegram-bot Application handles signal installation internally)
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**Already documented in STATE.md:**
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- Silent suspension (no Telegram notification) - from CONTEXT.md LOCKED decision
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- Switching sessions leaves previous subprocess running (suspends on its own timer) - from CONTEXT.md LOCKED decision
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## Deviations from Plan
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None - plan executed exactly as written.
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## Issues Encountered
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None
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## Next Phase Readiness
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**Ready for Phase 3 Plan 3 (Output Modes):**
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- Session lifecycle fully implemented (suspend/resume, timeout configuration, status commands)
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- Subprocess management robust (startup cleanup, graceful shutdown)
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- Race conditions handled via per-session locks
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**No blockers or concerns**
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---
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*Phase: 03-lifecycle-management*
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*Completed: 2026-02-04*
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