build.rs

#![allow(non_snake_case)]

use std::{env, path::PathBuf};

fn main() {
  let outputDirectory = PathBuf::from(env::var("OUT_DIR").unwrap());

  let microservices = vec!["users", "profiles", "followships", "posts", "feeds"];

  for microservice in microservices {
    let protoFilePath = format!("backend/protos/{}_microservice.proto", microservice);
    let descriptorFilePath =
      outputDirectory.join(format!("{}_microservice.descriptor.bin", microservice));

    tonic_build::configure()
      .build_client(false)
      // Descriptors are the commonly used language model for Protocol Buffers. They are used as an
      // intermediate artifact to support code generation, and they are also used in runtime
      // libraries to implement support for reflection and dynamic types.
      // Read more here - https://protobuf.com/docs/descriptors
      .file_descriptor_set_path(descriptorFilePath)
      .compile(&[protoFilePath], &["backend/protos"])
      .unwrap();
  }
}