Integrate USDPL basics

.gitignore

@@ -55,3 +55,8 @@ out/*
 cli/
 cli/*
 cli/decky
+bin/*
+
+# Ignore Rust compiler folders
+backend/target
+src/rust/target

backend/Cargo.toml

@@ -0,0 +1,35 @@
+[package]
+name = "usdpl-decky"
+version = "0.1.0"
+edition = "2021"
+authors = ["Author <email@example.org>"]
+description = "Backend functionality for usdpl-decky template"
+license = "BSD-3-Clause"
+repository = "https://git.ngni.us/NG-SD-Plugins/usdpl-decky-plugin-template"
+keywords = ["template", "decky"]
+readme = "../README.md"
+
+
+[dependencies]
+usdpl-back = { version = "1.0", features = ["blocking", "decky"], path = "../../../usdpl-back"}
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+
+nrpc = { version = "1.0", path = "../../../../nRPC/nrpc", default-features = false }
+prost = "0.11"
+tokio = { version = "1", features = ["sync", "rt"] }
+
+sysfuss = { version = "0.3", features = ["derive"] }
+
+# logging
+log = "0.4"
+simplelog = "0.12"
+
+[build-dependencies]
+usdpl-build = { version = "1.0", path = "../../../usdpl-build" }
+
+[profile.release]
+debug = false
+strip = true
+lto = true
+codegen-units = 4

backend/Dockerfile

@@ -1,9 +1,6 @@
-# we support images for building with a vanilla SteamOS base,
-# or versions with ootb support for rust or go
-# developers can also customize these images via this Dockerfile
-#FROM ghcr.io/steamdeckhomebrew/holo-toolchain-rust:latest
-#FROM ghcr.io/steamdeckhomebrew/holo-toolchain-go:latest
-FROM ghcr.io/steamdeckhomebrew/holo-base:latest
+FROM ghcr.io/steamdeckhomebrew/holo-toolchain-rust:latest
 
-# entrypoint.sh should always be located in the backend folder
-ENTRYPOINT [ "/backend/entrypoint.sh" ]
+# for building Rust wasm frontend
+RUN curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+
+ENTRYPOINT [ "/backend/entrypoint.sh" ]

backend/Makefile

@@ -1,14 +0,0 @@
-# This is the default target, which will be built when 
-# you invoke make
-.PHONY: all
-all: hello
-
-# This rule tells make how to build hello from hello.cpp
-hello:
-	mkdir -p ./out
-	gcc -o ./out/hello ./src/main.c 
-
-# This rule tells make to delete hello and hello.o
-.PHONY: clean 
-clean:
-	rm -f hello

backend/build-docker.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+
+echo "--- Rust version info ---"
+rustup --version
+rustc --version
+cargo --version
+
+echo "--- Building plugin backend ---"
+cargo build --release
+#mkdir -p out
+cp target/release/fantastic-rs out/backend
+
+echo "--- Building plugin frontend (wasm) ---"
+# this only builds the webassembly part, while the actual frontend task builds the rest of it
+cd /plugin/src/rust
+./build.sh decky
+cargo clean
+cd /backend
+
+echo " --- Cleaning up ---"
+# remove root-owned target folder
+cargo clean

backend/build.rs

@@ -0,0 +1,9 @@
+fn main() {
+    //println!("CWD: {}", std::env::current_dir().unwrap().display());
+    usdpl_build::back::build([
+        format!("{}/protos/usdpl_template.proto", std::env::current_dir().unwrap().display())
+    ].into_iter(),
+    [
+        format!("{}/protos/", std::env::current_dir().unwrap().display())
+    ].into_iter())
+}

backend/build.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+#cargo build --target x86_64-unknown-linux-musl --release
+cargo build
+
+mkdir -p ../bin
+
+#cp ./target/x86_64-unknown-linux-musl/release/usdpl-decky ../bin/backend
+cp ./target/debug/usdpl-decky ../bin/backend

backend/create_docker_img.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+# build docker container locally (for testing)
+
+docker build -t fantastic_backend .

backend/entrypoint.sh

@@ -5,4 +5,4 @@ echo "Container's IP address: `awk 'END{print $1}' /etc/hosts`"
 
 cd /backend
 
-make
+bash build-docker.sh

backend/protos/usdpl_template.proto

@@ -0,0 +1,55 @@
+syntax = "proto3";
+
+//
+// This is a protobuf file. This is used by gRPC (and nRPC) to define the interface
+//  between the front-end and the back-end. Because the front-end is compiled to
+//  WebAssembly and has Javascript bindings, there are a few gotchas:
+//
+//    - A message cannot contain non-Copy fields unless it only has one field;
+//       messages are turned into Rust structs if they have more than one field
+//       and all types bound to Javascript must be Copy
+//    - A single-field message will not be turned into a single-field struct;
+//       the field will be passed around directly instead.
+//    - A zero-field message will be turned into an empty tuple ()
+//    - JS bindings are similar, except with JS Objects
+//    - Values can be streamed back- to front-end with a Rust generator stream and a JS callback function
+//    - Values can be streamed front- to back-end with a JS generator function and a Rust stream consumer
+//
+// The generated Rust module and Typescript bindings should provide a good clue as to how to pass parameters
+//
+
+package usdpl_template;
+
+// The most amazing nRPC service
+service Template {
+  // Send back the exact same message as received
+  rpc echo (EchoMessage) returns (EchoMessage);
+
+  // Hello world
+  rpc hello (NameMessage) returns (HelloResponse);
+
+  // Service version info
+  rpc version (Empty) returns (VersionMessage);
+
+  // Service name
+  rpc name (Empty) returns (NameMessage);
+}
+
+// The request and response message for Echo
+message EchoMessage {
+  string msg = 1;
+}
+
+message NameMessage {
+  string name = 1;
+}
+
+message HelloResponse {
+  string phrase = 1;
+}
+
+message Empty {}
+
+message VersionMessage {
+  string version = 1;
+}

backend/run_docker_img.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+# run docker container locally (for testing)
+# assumes you're running in the backend/ dir of the project
+
+docker run -i --entrypoint /backend/entrypoint.sh -v $PWD:/backend fantastic_backend
+mkdir -p ../bin
+cp ./out/backend ../bin

backend/src/main.c

@@ -1,5 +0,0 @@
-#include <stdio.h>
-int main() {
-  printf("Hello World\n");
-  return 0;
-}

backend/src/main.rs

@@ -0,0 +1,35 @@
+//mod api;
+//mod control;
+//mod datastructs;
+//mod json;
+//mod sys;
+mod service_impl;
+
+use simplelog::{WriteLogger, LevelFilter};
+
+#[allow(missing_docs)]
+#[allow(dead_code)]
+pub mod services {
+    include!(concat!(env!("OUT_DIR"), "/mod.rs"));
+}
+
+use services::usdpl_template::TemplateServer;
+
+fn main() -> Result<(), ()> {
+    WriteLogger::init(
+        #[cfg(debug_assertions)]{LevelFilter::Debug},
+        #[cfg(not(debug_assertions))]{LevelFilter::Info},
+        Default::default(),
+        std::fs::File::create("/tmp/usdpl-template.log").unwrap()
+    ).unwrap();
+
+    log::info!("Starting back-end ({} v{}):{}", service_impl::NAME, service_impl::VERSION, service_impl::PORT);
+    println!("Starting back-end ({} v{}):{}", service_impl::NAME, service_impl::VERSION, service_impl::PORT);
+    usdpl_back::Server::new(service_impl::PORT)
+        .register(TemplateServer::new(
+            service_impl::TemplateService::new()
+        ))
+        .run_blocking()
+        .unwrap();
+    Ok(())
+}

backend/src/service_impl.rs

@@ -0,0 +1,38 @@
+use crate::services::usdpl_template::*;
+
+pub const PORT: u16 = 12340; // TODO: choose a unique port number
+pub const VERSION: &'static str = env!("CARGO_PKG_VERSION");
+pub const NAME: &'static str = env!("CARGO_PKG_NAME");
+
+pub struct TemplateService;
+
+impl TemplateService {
+    pub fn new() -> Self {
+        Self
+    }
+}
+
+#[usdpl_back::nrpc::_helpers::async_trait::async_trait]
+impl<'a> ITemplate<'a> for TemplateService {
+    async fn echo(&mut self, input: EchoMessage) -> Result<EchoMessage, Box<dyn std::error::Error + Send>> {
+        Ok(input)
+    }
+
+    async fn hello(&mut self, input: NameMessage) -> Result<HelloResponse, Box<dyn std::error::Error + Send>> {
+        Ok(HelloResponse {
+            phrase: format!("Hello {}!", input.name),
+        })
+    }
+
+    async fn version(&mut self, _: Empty) -> Result<VersionMessage, Box<dyn std::error::Error + Send>> {
+        Ok(VersionMessage {
+            version: VERSION.to_string(),
+        })
+    }
+
+    async fn name(&mut self, _: Empty) -> Result<NameMessage, Box<dyn std::error::Error + Send>> {
+        Ok(NameMessage {
+            name: NAME.to_string(),
+        })
+    }
+}

main.py

@@ -3,55 +3,46 @@ import os
 # The decky plugin module is located at decky-loader/plugin
 # For easy intellisense checkout the decky-loader code repo
 # and add the `decky-loader/plugin/imports` path to `python.analysis.extraPaths` in `.vscode/settings.json`
-import decky
+import pathlib
+import subprocess
 import asyncio
+import os
+
+HOME_DIR = str(pathlib.Path(os.getcwd()).parent.parent.resolve())
+PARENT_DIR = str(pathlib.Path(__file__).parent.resolve())
+
+LOG_LOCATION = "/tmp/usdpl-template.py.log"
+
+# set up logging for Python back-end spawning
+import logging
+
+logging.basicConfig(
+    filename = LOG_LOCATION,
+    format = '%(asctime)s %(levelname)s %(message)s',
+    filemode = 'w',
+    force = True)
+
+logger = logging.getLogger()
+logger.setLevel(logging.DEBUG)
+logging.info(f"usdpl-decky-template main.py https://git.ngni.us/NG-SD-Plugins/usdpl-decky-plugin-template")
 
 class Plugin:
-    # A normal method. It can be called from the TypeScript side using @decky/api.
-    async def add(self, left: int, right: int) -> int:
-        return left + right
-
-    async def long_running(self):
-        await asyncio.sleep(15)
-        # Passing through a bunch of random data, just as an example
-        await decky.emit("timer_event", "Hello from the backend!", True, 2)
-
+    backend_proc = None
     # Asyncio-compatible long-running code, executed in a task when the plugin is loaded
     async def _main(self):
-        self.loop = asyncio.get_event_loop()
-        decky.logger.info("Hello World!")
+        # startup back-end
+        self.backend_proc = subprocess.Popen(
+            [PARENT_DIR + "/bin/backend"],
+            env = dict(os.environ))
+        while True: # keep running in case Decky checks; very likely unnecessary
+            await asyncio.sleep(1)
 
-    # Function called first during the unload process, utilize this to handle your plugin being stopped, but not
-    # completely removed
     async def _unload(self):
-        decky.logger.info("Goodnight World!")
-        pass
-
-    # Function called after `_unload` during uninstall, utilize this to clean up processes and other remnants of your
-    # plugin that may remain on the system
-    async def _uninstall(self):
-        decky.logger.info("Goodbye World!")
-        pass
-
-    async def start_timer(self):
-        self.loop.create_task(self.long_running())
-
-    # Migrations that should be performed before entering `_main()`.
-    async def _migration(self):
-        decky.logger.info("Migrating")
-        # Here's a migration example for logs:
-        # - `~/.config/decky-template/template.log` will be migrated to `decky.decky_LOG_DIR/template.log`
-        decky.migrate_logs(os.path.join(decky.DECKY_USER_HOME,
-                                               ".config", "decky-template", "template.log"))
-        # Here's a migration example for settings:
-        # - `~/homebrew/settings/template.json` is migrated to `decky.decky_SETTINGS_DIR/template.json`
-        # - `~/.config/decky-template/` all files and directories under this root are migrated to `decky.decky_SETTINGS_DIR/`
-        decky.migrate_settings(
-            os.path.join(decky.DECKY_HOME, "settings", "template.json"),
-            os.path.join(decky.DECKY_USER_HOME, ".config", "decky-template"))
-        # Here's a migration example for runtime data:
-        # - `~/homebrew/template/` all files and directories under this root are migrated to `decky.decky_RUNTIME_DIR/`
-        # - `~/.local/share/decky-template/` all files and directories under this root are migrated to `decky.decky_RUNTIME_DIR/`
-        decky.migrate_runtime(
-            os.path.join(decky.DECKY_HOME, "template"),
-            os.path.join(decky.DECKY_USER_HOME, ".local", "share", "decky-template"))
+        # gracefully stop the back-end, but kill if it doesn't exit quickly enough
+        if self.backend_proc is not None:
+            self.backend_proc.terminate()
+            try:
+                self.backend_proc.wait(timeout=5) # 5 seconds timeout
+            except subprocess.TimeoutExpired:
+                self.backend_proc.kill()
+            self.backend_proc = None

package.json

@@ -27,17 +27,18 @@
   "homepage": "https://github.com/SteamDeckHomebrew/decky-plugin-template#readme",
   "devDependencies": {
     "@decky/rollup": "^1.0.1",
-    "@decky/ui": "^4.7.2",
+    "@decky/ui": "^4.8.1",
     "@types/react": "18.3.3",
     "@types/react-dom": "18.3.0",
     "@types/webpack": "^5.28.5",
-    "rollup": "^4.22.5",
-    "typescript": "^5.6.2"
+    "rollup": "^4.24.0",
+    "typescript": "^5.6.3"
   },
   "dependencies": {
     "@decky/api": "^1.1.2",
     "react-icons": "^5.3.0",
-    "tslib": "^2.7.0"
+    "tslib": "^2.8.0",
+    "usdpl-template-wasm": "file:src/rust/pkg"
   },
   "pnpm": {
     "peerDependencyRules": {

rollup.config.js

@@ -2,4 +2,30 @@ import deckyPlugin from "@decky/rollup";
 
 export default deckyPlugin({
   // Add your extra Rollup options here
-})
+  input: './src/index.tsx',
+  plugins: [
+    commonjs(),
+    nodeResolve(),
+    typescript(),
+    json(),
+    replace({
+      preventAssignment: false,
+      'process.env.NODE_ENV': JSON.stringify('production'),
+    }),
+    importAssets({
+      publicPath: `http://127.0.0.1:1337/plugins/${name}/`
+    })
+  ],
+  context: 'window',
+  external: ['react', 'react-dom', 'decky-frontend-lib'],
+  output: {
+    file: 'dist/index.js',
+    globals: {
+      react: 'SP_REACT',
+      'react-dom': 'SP_REACTDOM',
+      'decky-frontend-lib': 'DFL',
+    },
+    format: 'iife',
+    exports: 'default',
+  },
+})

src/index.tsx

@@ -16,28 +16,40 @@ import {
 import { useState } from "react";
 import { FaShip } from "react-icons/fa";
 
+import { init_embedded, target_usdpl } from "usdpl-template-wasm";
+import { Template } from "usdpl-template-wasm";
+
+const USDPL_PORT: number = 12340; // TODO: choose a unique port number
+
+// Front-end connection to the nRPC service
+var TEMPLATE_CLIENT: Template | undefined = undefined;
+
+var name: string = "Unknown";
+var version: string = "?.?.?";
+
+// init service
+(async function(){
+  await init_embedded()
+  FAN_CLIENT = new Fan(USDPL_PORT);
+  console.log("USDPL-TEMPLATE: USDPL front-end service started, framework: " + target_usdpl());
+  // add here any back-end calls to execute on startup
+  name = await TEMPLATE_CLIENT.name();
+  version = await TEMPLATE_CLIENT.version();
+})();
+
 // import logo from "../assets/logo.png";
 
-// This function calls the python function "add", which takes in two numbers and returns their sum (as a number)
-// Note the type annotations:
-//  the first one: [first: number, second: number] is for the arguments
-//  the second one: number is for the return value
-const add = callable<[first: number, second: number], number>("add");
-
-// This function calls the python function "start_timer", which takes in no arguments and returns nothing.
-// It starts a (python) timer which eventually emits the event 'timer_event'
-const startTimer = callable<[], void>("start_timer");
-
 function Content() {
   const [result, setResult] = useState<number | undefined>();
 
-  const onClick = async () => {
+  /*const onClick = async () => {
     const result = await add(Math.random(), Math.random());
     setResult(result);
-  };
+  };*/
 
   return (
     <PanelSection title="Panel Section">
+    {/* Template TODO: add this functionality
       <PanelSectionRow>
         <ButtonItem
           layout="below"
@@ -45,14 +57,12 @@ function Content() {
         >
           {result ?? "Add two numbers via Python"}
         </ButtonItem>
-      </PanelSectionRow>
+      </PanelSectionRow>*/}
       <PanelSectionRow>
-        <ButtonItem
-          layout="below"
-          onClick={() => startTimer()}
-        >
-          {"Start Python timer"}
-        </ButtonItem>
+        <Field
+          label={name}>
+          v{version}
+        </Field>
       </PanelSectionRow>
 
       {/* <PanelSectionRow>
@@ -108,7 +118,6 @@ export default definePlugin(() => {
     // The function triggered when your plugin unloads
     onDismount() {
       console.log("Unloading")
-      removeEventListener("timer_event", listener);
       // serverApi.routerHook.removeRoute("/decky-plugin-test");
     },
   };

src/rust/Cargo.lock

@@ -0,0 +1,974 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "aho-corasick"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "anyhow"
+version = "1.0.90"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "37bf3594c4c988a53154954629820791dde498571819ae4ca50ca811e060cc95"
+
+[[package]]
+name = "autocfg"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
+
+[[package]]
+name = "base64"
+version = "0.13.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
+
+[[package]]
+name = "beef"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a8241f3ebb85c056b509d4327ad0358fbbba6ffb340bf388f26350aeda225b1"
+
+[[package]]
+name = "bitflags"
+version = "2.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
+
+[[package]]
+name = "bumpalo"
+version = "3.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
+
+[[package]]
+name = "bytes"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ac0150caa2ae65ca5bd83f25c7de183dea78d4d366469f148435e2acfbad0da"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "console_error_panic_hook"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a06aeb73f470f66dcdbf7223caeebb85984942f22f1adb2a088cf9668146bbbc"
+dependencies = [
+ "cfg-if",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "either"
+version = "1.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "60b1af1c220855b6ceac025d3f6ecdd2b7c4894bfe9cd9bda4fbb4bc7c0d4cf0"
+
+[[package]]
+name = "equivalent"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
+
+[[package]]
+name = "errno"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "534c5cf6194dfab3db3242765c03bbe257cf92f22b38f6bc0c58d59108a820ba"
+dependencies = [
+ "libc",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "fastrand"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8c02a5121d4ea3eb16a80748c74f5549a5665e4c21333c6098f283870fbdea6"
+
+[[package]]
+name = "fixedbitset"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ce7134b9999ecaf8bcd65542e436736ef32ddca1b3e06094cb6ec5755203b80"
+
+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
+[[package]]
+name = "futures"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "65bc07b1a8bc7c85c5f2e110c476c7389b4554ba72af57d8445ea63a576b0876"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "futures-executor",
+ "futures-io",
+ "futures-sink",
+ "futures-task",
+ "futures-util",
+]
+
+[[package]]
+name = "futures-channel"
+version = "0.3.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2dff15bf788c671c1934e366d07e30c1814a8ef514e1af724a602e8a2fbe1b10"
+dependencies = [
+ "futures-core",
+ "futures-sink",
+]
+
+[[package]]
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+name = "usdpl-build"
+version = "1.0.0"
+dependencies = [
+ "nrpc-build",
+ "prettyplease 0.2.24",
+ "proc-macro2",
+ "prost-build",
+ "prost-types",
+ "quote",
+ "syn 2.0.82",
+]
+
+[[package]]
+name = "usdpl-core"
+version = "1.0.0"
+dependencies = [
+ "base64",
+]
+
+[[package]]
+name = "usdpl-front"
+version = "1.0.0"
+dependencies = [
+ "console_error_panic_hook",
+ "futures",
+ "futures-channel",
+ "gloo-net",
+ "js-sys",
+ "log",
+ "nrpc",
+ "prost",
+ "usdpl-core",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+]
+
+[[package]]
+name = "usdpl-template-wasm"
+version = "0.1.0"
+dependencies = [
+ "nrpc",
+ "prost",
+ "usdpl-build",
+ "usdpl-front",
+]
+
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.95"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "128d1e363af62632b8eb57219c8fd7877144af57558fb2ef0368d0087bddeb2e"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.95"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb6dd4d3ca0ddffd1dd1c9c04f94b868c37ff5fac97c30b97cff2d74fce3a358"
+dependencies = [
+ "bumpalo",
+ "log",
+ "once_cell",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.82",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-futures"
+version = "0.4.45"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc7ec4f8827a71586374db3e87abdb5a2bb3a15afed140221307c3ec06b1f63b"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "wasm-bindgen",
+ "web-sys",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.95"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e79384be7f8f5a9dd5d7167216f022090cf1f9ec128e6e6a482a2cb5c5422c56"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.95"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26c6ab57572f7a24a4985830b120de1594465e5d500f24afe89e16b4e833ef68"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.82",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.95"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "65fc09f10666a9f147042251e0dda9c18f166ff7de300607007e96bdebc1068d"
+
+[[package]]
+name = "web-sys"
+version = "0.3.72"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6488b90108c040df0fe62fa815cbdee25124641df01814dd7282749234c6112"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "which"
+version = "4.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87ba24419a2078cd2b0f2ede2691b6c66d8e47836da3b6db8265ebad47afbfc7"
+dependencies = [
+ "either",
+ "home",
+ "once_cell",
+ "rustix",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.59.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"

src/rust/Cargo.toml

@@ -0,0 +1,33 @@
+[package]
+name = "usdpl-template-wasm"
+version = "0.1.0"
+edition = "2021"
+authors = ["Author <email@example.org>"]
+description = "Backend functionality for usdpl-decky template"
+license = "BSD-3-Clause"
+repository = "https://git.ngni.us/NG-SD-Plugins/usdpl-decky-plugin-template"
+keywords = ["template", "decky"]
+readme = "../../README.md"
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[dependencies]
+usdpl-front = { features = ["decky"], version = "1.0", path = "../../../../usdpl-front" }
+nrpc = { version = "1.0", path = "../../../../../nRPC/nrpc", default-features = false }
+
+prost = "0.11"
+
+[build-dependencies]
+usdpl-build = { version = "1.0", path = "../../../../usdpl-build" }
+
+[features]
+debug = ["usdpl-front/debug"]
+
+[profile.release]
+# Tell `rustc` to optimize for small code size.
+opt-level = "s"
+debug = false
+strip = true
+lto = true
+codegen-units = 4

src/rust/build.rs

@@ -0,0 +1,15 @@
+fn main() {
+    println!("CWD: {}", std::env::current_dir().unwrap().display());
+    usdpl_build::front::build(
+        [format!(
+            "{}/../../backend/protos/usdpl_template.proto",
+            std::env::current_dir().unwrap().display()
+        )]
+        .into_iter(),
+        [format!(
+            "{}/../../backend/protos/",
+            std::env::current_dir().unwrap().display()
+        )]
+        .into_iter(),
+    )
+}

src/rust/build.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+if [ -n "$1" ]; then
+    if [ "$1" == "--help" ]; then
+        echo "Usage:
+$0 [decky|crankshaft|<nothing>]"
+        exit 0
+    elif [ "$1" == "decky" ]; then
+        echo "Building WASM module for decky framework"
+        RUSTFLAGS="--cfg aes_compact" wasm-pack build --target web --features decky,$2
+    else
+        echo "Unsupported plugin framework \`$1\`"
+        exit 1
+    fi
+else
+    echo "WARNING: Building for any plugin framework, which may not work for every framework"
+    RUSTFLAGS="--cfg aes_compact" wasm-pack build --target web --features debug,$2
+fi
+
+python3 ./scripts/generate_embedded_wasm.py

src/rust/scripts/generate_embedded_wasm.py

@@ -0,0 +1,45 @@
+import base64
+
+if __name__ == "__main__":
+    print("Embedding WASM into js")
+    # assumption: current working directory (relative to this script) is ../
+    # assumption: release wasm binary at ./pkg/usdpl_bg.wasm
+    with open("./pkg/fantastic_wasm_bg.wasm", mode="rb") as infile:
+        with open("./pkg/fantastic_wasm.js", mode="ab") as outfile:
+            outfile.write("\n\n// USDPL customization\nconst encoded = \"".encode())
+            encoded = base64.b64encode(infile.read())
+            outfile.write(encoded)
+            outfile.write("\";\n\n".encode())
+            outfile.write(
+"""function asciiToBinary(str) {
+  if (typeof atob === 'function') {
+    return atob(str)
+  } else {
+    return new Buffer(str, 'base64').toString('binary');
+  }
+}
+
+function decode() {
+  var binaryString =  asciiToBinary(encoded);
+  var bytes = new Uint8Array(binaryString.length);
+  for (var i = 0; i < binaryString.length; i++) {
+    bytes[i] = binaryString.charCodeAt(i);
+  }
+  return (async function() {
+    return new Response(bytes.buffer, {
+        status: 200,
+        statusText: 'OK',
+        headers: {
+            'Content-Type': 'application/wasm'
+        }
+    });
+  })();
+}
+
+export function init_embedded() {
+    return __wbg_init(decode())
+}
+""".encode())
+    with open("./pkg/fantastic_wasm.d.ts", "a") as outfile:
+        outfile.write("\n\n// USDPL customization\nexport function init_embedded();\n")
+    print("Done: Embedded WASM into js")

src/rust/src/lib.rs

@@ -0,0 +1,7 @@
+#[allow(missing_docs)]
+#[allow(dead_code)]
+pub mod services {
+    include!(concat!(env!("OUT_DIR"), "/mod.rs"));
+}
+
+pub use usdpl_front;