# mongo — ledger

## v0.1.1

- **fidelity fix (MEDIUM):** added `check_document_exists(collection, target) -> bool`
  (`count_documents(target, limit=1) > 0`). It existed only in the talos origin and was
  not carried over; the talos caller (`local.py:157`) relies on it.
- **param rename (breaking):** `update_document` / `find_one_and_update` /
  `find_one_and_replace` now take `upsert=` (was `do_upsert=`), standardizing on the
  motor name. Consumers passing `do_upsert=` must switch to `upsert=` on migration; the
  talos caller already uses `upsert=` and is now correct as-is.
- README install line corrected to the `git+ssh` form (was `git+https`).
- `close()` is synchronous (motor's close is sync) — not awaited.
- `get_document_hashmap` / `get_document_fields` skip docs missing the key (was an
  unguarded `doc[key]` that swallowed a KeyError to `{}`/`[]`).

## v0.1.0

- initial: async MongoDB wrapper over motor; wrapped methods log-and-swallow to safe
  defaults; raw `.collection()` / `db[name]` escape hatch raises.