async def find_one(collection: AsyncIOMotorCollection, match, pipeline=[]):
cursor: AsyncIOMotorCursor = collection.aggregate([
{
'$match': match
},
{
'$limit': 1
},
*pipeline,
])
if await cursor.fetch_next:
return cursor.next_object()
else:
return None
async def find(collection: AsyncIOMotorCollection,
match={},
pipeline=[],
sort=None,
limit=None,
skip=0,
max_len=MAX_NODES):
pipe: list = []
if match:
pipe.append({'$match': match})
if sort:
pipe.append({'$sort': sort})
if limit:
pipe.append({"$limit": skip + limit})
if skip:
pipe.append({"$skip": skip})
pipeline = pipeline + pipe
cursor: AsyncIOMotorCursor = collection.aggregate(pipeline)
return await cursor.to_list(max_len)