tvl-depot/tvix/store/build.rs
Florian Klink 0bf2b0ef11 feat(tvix/store): implement reflection
This implements grpc.reflection.v1alpha.ServerReflection, and will make tools
like evans automatically discover available services, without having to
specify the path to the .proto files client-side.

It's behind a reflection feature flag, which is enabled by default.

Change-Id: Icbcb5eb05ceede5b9952e38a2ba72eaa6fa8a437
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7435
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
2022-12-30 20:25:09 +00:00

32 lines
1.1 KiB
Rust

use std::io::Result;
fn main() -> Result<()> {
#[allow(unused_mut)]
let mut builder = tonic_build::configure();
#[cfg(feature = "reflection")]
{
let out_dir = std::path::PathBuf::from(std::env::var("OUT_DIR").unwrap());
let descriptor_path = out_dir.join("tvix.store.v1.bin");
builder = builder.file_descriptor_set_path(&descriptor_path);
};
builder.build_server(true).build_client(true).compile(
&[
"tvix/store/protos/castore.proto",
"tvix/store/protos/pathinfo.proto",
"tvix/store/protos/rpc_blobstore.proto",
"tvix/store/protos/rpc_directory.proto",
"tvix/store/protos/rpc_pathinfo.proto",
],
// If we are in running `cargo build` manually, using `../..` works fine,
// but in case we run inside a nix build, we need to instead point PROTO_ROOT
// to a sparseTree containing that structure.
&[match std::env::var_os("PROTO_ROOT") {
Some(proto_root) => proto_root.to_str().unwrap().to_owned(),
None => "../..".to_string(),
}],
)?;
Ok(())
}