mongo/README.md

mongo

Async MongoDB wrapper over motor. Thin, opinionated helpers for the common paths, with a raw escape hatch for everything else.

Install

requirements.txt:

mongo @ git+https://git.rethinkstudios.io/rethink-public/mongo@v0.1.0

Direct:

pip install "mongo @ git+https://git.rethinkstudios.io/rethink-public/mongo@v0.1.0"

Requires motor and pymongo (pulled transitively).

Usage

Object (preferred) — one client per process:

from mongo import Mongo

db = Mongo(conn_string, database)          # attach as bot.db / app.db
users = await db.get_documents("users", {"active": True})
await db.close()                            # on shutdown

Module proxy (back-compat) — arm once, then call bare:

import mongo                                # NOT `from mongo import ...`
mongo.init(conn_string, database)
users = await mongo.get_documents("users", {"active": True})

Both styles share one client. The proxy exists so legacy call sites keep working after a one-line init(); new code should use the object.

Error contract

• Wrapped methods log-and-swallow exceptions and return a safe default (False / [] / {} / 0 / None). Branch on the result.
• db.collection(name) (or db[name]) returns the raw motor collection: full driver surface, no swallowing, raises. Use it for anything not wrapped (find_one_and_* beyond what's exposed, change streams, complex bulk ops).

API

See the module docstring and method docstrings in mongo.py — that's the source of truth. Grouped as: collection/index management, create, read, update, delete, bulk, checks. Atomic ops (find_one_and_update/replace/delete) and bulk_write are included.

Gotchas

• from mongo import func won't see the proxy (resolved at import, before init). Use import mongo then mongo.func(...).
• find_one_and_update returns the after image by default (return_after=True).
• bulk_write takes pymongo ops the caller builds:

  from pymongo import UpdateOne
  ops = [UpdateOne({"_id": i}, {"$set": {...}}, upsert=True) for i in ids]
  await db.bulk_write("col", ops)
  

Versioning

Tagged vX.Y.Z. Pin the tag in requirements.txt; bump deliberately.