Files
codex/codex-rs/thread-store
sayan-oai 304d15cab0 [codex] Remove redundant SQLite dynamic tool storage (#24819)
## Why

Dynamic tools are defined at thread start and already stored in rollout
`SessionMeta`, which restores resumed and forked sessions. Persisting
the same tools through SQLite creates a second runtime persistence path
that is unnecessary prework for the explicit namespace refactor.

## What changed

- Restore missing thread-start dynamic tools directly from rollout
history, including when SQLite is enabled.
- Remove SQLite dynamic-tool reads, writes, backfill, and thread
metadata patch plumbing.
- Add SQLite-enabled resume integration coverage that verifies a
rollout-defined dynamic tool is still sent after resume.

## Compatibility

The existing `thread_dynamic_tools` table is intentionally not dropped
even though it's now unused. Older Codex binaries are allowed to open
databases migrated by newer binaries and still reference this table;
dropping it would break that mixed-version path. See
[here](https://github.com/openai/codex/blob/main/codex-rs/state/src/migrations.rs#L10-L11).

## Verification

- `just test -p codex-state -p codex-rollout -p codex-thread-store`
- `just test -p codex-core --test all
resume_restores_dynamic_tools_from_rollout_with_sqlite_enabled`
2026-05-27 17:57:32 -07:00
..

Thread Store

codex-thread-store is the storage boundary for Codex threads. It defines the ThreadStore trait plus local and in-memory implementations. Other storage implementations may live outside this repository.

Responsibilities

  • ThreadStore::append_items is the raw canonical history append API. It does not infer metadata from item contents.
  • ThreadStore::update_thread_metadata is the only thread metadata write API. It accepts a single literal metadata patch shape, regardless of whether the caller is applying a user/API mutation or facts derived above the store from appended history.
  • LiveThread is the preferred API for active session persistence. It owns a per-thread metadata sync helper, applies the rollout persistence policy, appends canonical history, and then sends metadata patches through ThreadStore::update_thread_metadata.
  • ThreadManager routes metadata mutations for loaded and cold threads through one entrypoint. Loaded threads use their LiveThread; cold threads go directly to the store.
  • LocalThreadStore persists history through codex-rollout JSONL files and persists queryable metadata through the SQLite state database when available. Local explicit metadata mutations also maintain JSONL/name-index compatibility so reading old or SQLite-less local storage keeps working.
  • RolloutRecorder is the local JSONL writer. It writes already-canonical items for ThreadStore::append_items; it no longer decides metadata updates for live thread-store appends.
  • core/session creates or resumes LiveThread handles and does not need to know whether persistence is backed by local files or another store.

Direction

New metadata observation semantics should live above ThreadStore. Stores persist explicit metadata fields, but raw history appends remain history-only.