Summary

New API will be added when allowing snapshot reads on secondaries through sessions in the C driver (CDRIVER-4034). That API should be documented under libmongoc/doc.

Motivation

Who is the affected end user?

Users of the at_cluster_time fields on read_concern and the snapshot flag on client sessions.

How does this affect the end user?

Users will be confused about how to use the new API.

How likely is it that this problem or use case will occur?

Likely if a user wants to use the new API.

Is this issue urgent?

No.

Is this ticket required by a downstream team?

No.

Is this ticket only for tests?

No functional impact outside of documentation.