hermes-agent/plugins
teknium1 0a5ee01e48 fix(hindsight): route flush-on-switch through writer queue, not raw thread
Follow-up to the cherry-picked PR #17447. The original flush spawned a
bare threading.Thread for the buffer-flush path, overwriting
self._sync_thread — which is aliased to the long-lived writer thread.
Two consequences:

1. No serialization with the writer queue. If old-session retains were
   still queued in _retain_queue, the flush ran concurrently with the
   writer and both threads could call aretain_batch against the same
   document_id.
2. The pre-spawn 'self._sync_thread.join(timeout=5.0)' tried to join the
   long-lived writer, which never exits, so the join was a no-op that
   just timed out — never actually serialized anything.

Fix: enqueue the flush closure on _retain_queue via _ensure_writer +
put(). Natural FIFO ordering behind any pending retains, no new thread,
no broken join. Shutdown-aware so it doesn't enqueue after teardown.

Tests updated to drain via _retain_queue.join() instead of the stale
_sync_thread.join(). Added regression guard
test_flush_serializes_behind_pending_retains_via_writer_queue that
blocks the writer mid-retain to prove the flush waits in FIFO behind
the old retain.

Also seeds _retain_queue / _shutting_down / stubbed _ensure_writer on
the bare-object test helper in test_memory_session_switch.py so that
path doesn't blow up under the new queue-enqueue.

tests/plugins/memory/test_hindsight_provider.py + tests/agent/test_memory_session_switch.py: 103/103 passing.
2026-04-29 08:09:03 -07:00
..
context_engine fix: robust context engine interface — config selection, plugin discovery, ABC completeness 2026-04-10 19:15:50 -07:00
disk-cleanup docs(plugins): rename disk-guardian to disk-cleanup + bundled-plugins docs 2026-04-20 04:46:45 -07:00
example-dashboard/dashboard feat(dashboard): page-scoped plugin slots for built-in pages (#15658) 2026-04-25 06:55:35 -07:00
google_meet feat(plugins): google_meet \u2014 join, transcribe, speak, follow up (#16364) 2026-04-27 06:22:25 -07:00
image_gen fix(xai-image): drop unreachable editing code path 2026-04-23 15:13:34 -07:00
memory fix(hindsight): route flush-on-switch through writer queue, not raw thread 2026-04-29 08:09:03 -07:00
observability/langfuse feat(plugins): add bundled observability/langfuse plugin 2026-04-28 01:40:59 -07:00
spotify refactor(spotify): convert to built-in bundled plugin under plugins/spotify (#15174) 2026-04-24 07:06:11 -07:00
strike-freedom-cockpit feat(dashboard): reskin extension points for themes and plugins (#14776) 2026-04-23 15:31:01 -07:00
__init__.py feat(memory): pluggable memory provider interface with profile isolation, review fixes, and honcho CLI restoration (#4623) 2026-04-02 15:33:51 -07:00