Loopback-Connector-MongoDB fails connecting to Atlas due to still using mongodb 3.7 driver

[jricardooliveira]

Describe the bug

Hi,

When trying to connect with cluster protocol to mongodb with the URI mongodb+srv:// after npm migrate it will fail with:

"Cannot migrate database schema MongoParseError: Load balancer mode requires driver version 4+"

Despite loopback-connector-mongodb documentation shows support for mongodb+srv the problem is that the node_module that comes with loopback-connector-mongodb (even with 6.2.0) is the mongodb package 3.7.0 and not 4.x ...

In reality loopback-connector-mongodb does not support mongodb+srv:// URI may be to that issue.

To replicate just create a lb4 application, add a mongodb datasource but instead of using mongodb:// try using the mongodb+srv URI for instance that is the ones available for MongoDB ATLAS Cloud service.

Thanks
Joao

Logs

Migrating schemas (alter existing schema)
Cannot migrate database schema MongoParseError: Load balancer mode requires driver version 4+
    at QueryReqWrap.callback (~project/node_modules/loopback-connector-mongodb/node_modules/mongodb/lib/core/uri_parser.js:111:27)
    at QueryReqWrap.onresolve [as oncomplete] (node:dns:215:10)

Additional information

Connection config:

const config = {
name: 'pinnersDS',
protocol: 'mongodb+srv',
url: 'mongodb+srv://myuseradm:[email protected]/?retryWrites=true&w=majority',
useNewUrlParser: true
};

Reproduction

Obvious enought

[achrinza]

Thanks for opening an issue, @jricardooliveira. It's something that's been under our radar for a while, but didn't have the resources to execute earlier.

There' currently an open PR that may interest you: loopbackio/loopback-connector-mongodb#672

[achrinza]

I'll proceed to close this issue in favour of loopbackio/loopback-connector-mongodb#638, which should cover the same things.

[achrinza]

Duplicate of loopbackio/loopback-connector-mongodb#638