How to automatically expose all .rs files in a directory in a module?

Question

I have module files generated from protobuf definitions. There are a lot of files and they will grow with time. This is the structure:

Answer 1

Use dtolnay's automod crate.

automod::dir!("path/to/directory"); 

This macro expands to one or more mod items, one for each source file in the specified directory.

The path is given relative to the directory containing Cargo.toml.