Mongo.cr and the event loop

[ursuscamp]

Does mongo.cr use the asynchronous event loop provided by Crystal, or will it block?

[datanoise]

mongo.cr is using mongoc driver which by default is using libc IO. So it will block the process. As an experiment I implemented src/mongo/stream.cr to delegate all IO operations to crystal event loop. Please try it and let me know if it helps.

[ursuscamp]

Looking through the code, it seems all it needs to set it up is to call setup_stream on the Mongo::Client instance. Is that correct?

[datanoise]

That's correct.