Restructure GPU compilation execution pipeline (#903)

* Restructure gpu compilation execution pipeline

* Add compilation server/client infrastructure

* Add wgpu executor

node-graph/compilation-server/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "compilation-server"
+version = "0.1.0"
+edition = "2021"
+license = "MIT OR Apache-2.0"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+tokio = { version = "1.0", features = ["full"] }
+axum = "0.6.1"
+serde_json = "1.0"
+graph-craft = { version = "0.1.0", path = "../graph-craft", features = ["serde"] }
+gpu-compiler-bin-wrapper = { version = "0.1.0", path = "../gpu-compiler/gpu-compiler-bin-wrapper" }
+serde = { version = "1.0", features = ["derive"] }
+tempfile = "3.3.0"
+anyhow = "1.0.68"
+futures = "0.3"

node-graph/compilation-server/src/main.rs

@@ -0,0 +1,39 @@
+use std::sync::Arc;
+
+use gpu_compiler_bin_wrapper::CompileRequest;
+
+use axum::{
+	extract::{Json, State},
+	http::StatusCode,
+	routing::{get, post},
+	Router,
+};
+
+struct AppState {
+	compile_dir: tempfile::TempDir,
+}
+
+#[tokio::main]
+async fn main() {
+	let shared_state = Arc::new(AppState {
+		compile_dir: tempfile::tempdir().expect("failed to create tempdir"),
+	});
+
+	// build our application with a single route
+	let app = Router::new()
+		.route("/", get(|| async { "Hello from compilation server!" }))
+		.route("/compile", get(|| async { "Supported targets: spirv" }))
+		.route("/compile/spriv", post(post_compile_spriv))
+		.with_state(shared_state);
+
+	// run it with hyper on localhost:3000
+	axum::Server::bind(&"0.0.0.0:3000".parse().unwrap()).serve(app.into_make_service()).await.unwrap();
+}
+
+async fn post_compile_spriv(State(state): State<Arc<AppState>>, Json(compile_request): Json<CompileRequest>) -> Result<Vec<u8>, StatusCode> {
+	let path = std::env::var("CARGO_MANIFEST_DIR").unwrap() + "/../gpu-compiler/Cargo.toml";
+	compile_request.compile(state.compile_dir.path().to_str().expect("non utf8 tempdir path"), &path).map_err(|e| {
+		eprintln!("compilation failed: {}", e);
+		StatusCode::INTERNAL_SERVER_ERROR
+	})
+}