Default data backend

[fnikolai]

I 'm trying to run superduper without any configuration, but it fails:

2024-May-17 00:16:19.96| ERROR    | 8caba5037a98| superduperdb.base.build:72   | Error initializing to DataBackend Client: localhost:27017: [Errno 111] Connection refused (configured timeouts: socketTimeoutMS: 20000.0ms, connectTimeoutMS: 20000.0ms), Timeout: 5.0s, Topology Description: <TopologyDescription id: 6646a1ceb8de3de22757623b, topology_type: Unknown, servers: [<ServerDescription ('localhost', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('localhost:27017: [Errno 111] Connection refused (configured timeouts: socketTimeoutMS: 20000.0ms, connectTimeoutMS: 20000.0ms)')>]>

The problem is that is trying to connect to a local mongo database. Why don't we have the mongomock as default ?

[jieguangzhou]

I think we can use mongomock as the default, and print a warning message to the user

[blythed]

@fnikolai traceback please.

[fnikolai]

>> cat testme.py 
from superduperdb import superduper
db = superduper()

fnikol@moumia  ( ~/Workspace/projects/superduper/superduperdb )[Mon May 20 17:37:20]  
>> python testme.py 
2024-May-20 17:38:03.36| ERROR    | moumia  | superduperdb.base.build:72   | Error initializing to DataBackend Client: localhost:27017: [Errno 
111] Connection refused (configured timeouts: socketTimeoutMS: 20000.0ms, connectTimeoutMS: 20000.0ms), Timeout: 5.0s, Topology Description: <T
opologyDescription id: 664b60461c878e393021f50e, topology_type: Unknown, servers: [<ServerDescription ('localhost', 27017) server_type: Unknown
, rtt: None, error=AutoReconnect('localhost:27017: [Errno 111] Connection refused (configured timeouts: socketTimeoutMS: 20000.0ms, connectTime
outMS: 20000.0ms)')>]>