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* db: one request-scoped database handle per API request Every API request now gets `request.ctx.db` (`wrolpi.db.RequestDB`): a Session plus raw cursors on that Session's connection, so a request needs at most one SQLite connection. Creating it does no I/O; requests that never touch the database never connect. `request.ctx.session` remains the handle's Session. A `RequestSession` binds itself to one lazily-opened Connection. An engine-bound Session releases its connection at every commit, and NullPool closes it, so a request that read and then wrote reconnected. Handlers write in `request.ctx.db.write()`: BEGIN IMMEDIATE, committed when the block exits, so the write lock is not held for the rest of the handler or by background work it starts. This replaces the handler-level `get_db_session(commit=True)` blocks (download create, collection item add/remove/reorder, channel create). The zim search handlers use the request's Session in their worker thread. Tests count the connections a request opens with production's per-call sessions (`count_request_connections`). Endpoints whose library functions still open their own connection are strict xfails, to be removed as those functions take the request's session. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * tests: name the real extra connections in the request connection xfails Channel detail: get_channel already uses the request session; the extra connection is Channel.get_statistics opening a raw cursor (get_db_curs). Search: count_file_groups opens a cursor for the total, then handle_file_group_search_results opens a cursor and a session. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com> |
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| __init__.py | ||