Add readme instructions, run proxy command.

Cargo.toml

@@ -6,6 +6,9 @@ edition = "2018"
 build = "build.rs"
 default-run = "tenebrous"
 
+[package.metadata.scripts]
+grpc-proxy = 'docker run -d --rm -v "$(pwd)"/envoy.yaml:/etc/envoy/envoy.yaml:ro --network=host envoyproxy/envoy:v1.16.1'
+
 [[bin]]
 name = "tenebrous-migrate"
 path = "src/migrate.rs"

README.md

@@ -4,41 +4,66 @@ An open source character sheet service for tabletop roleplaying games.
 
 Currently under heavy development.
 
+## The Stack
+
+This project makes use of these technologies:
+
+- Rust
+- Rocket Web Framework
+- Tonic gRPC Framework
+- Typescript
+
+Building is backed by: cargo, npm, and webpack.
+
 ## Build Instructions
 
 These are very basic build instructions. They assume you already have
 cargo set up and installed.
 
-### Install Dependencies
-
-Install dependencies. The exact method depends on your OS.
-
- * sqlite3 and development headers (Void Linux: `xbps-install
-   sqlite sqlite-devel`, Ubuntu: `apt install sqlite3 libsqlite3-dev`).
- * protoc: protocol buffers compiler. There is one baked into the
-   build, so you should not need this unless you are not using
-   Linux/Mac/Windows.
-
 ### Initial Setup
 
-Follow these instructions from the root of the repository.
+Quick initial setup instructions that will set up a development
+environment.
 
-Set up database:
+First, install dependencies by either using the command below (Void
+Linux), or reading the "Dependencies Required" section:
 
 ```
+xbps-install sqlite sqlite-devel protobuf nodejs docker
+```
+
+Then run the required `cargo` commands to install management tools and
+create a development database:
+
+```
+
 cargo install --version=0.2.0 sqlx-cli
+cargo install cargo-run-script
 cargo run --bin tenebrous-migrate
 ```
 
-### Run Application
+### Dependencies Required
 
-If you are using `rustup`, then it should automatically switch to the
-stable version of Rust in this repository. This is because of the
-`rust-toolchain` file.
+Dependencies required to build the project. The exact installation
+method depends on your OS.
+
+ * sqlite3 and development headers (Void Linux: `xbps-install
+   sqlite sqlite-devel`, Ubuntu: `apt install sqlite3 libsqlite3-dev`).
+ * protoc: protocol buffers compiler. Needed to compile protobuf files
+   for both the server and web frontends (Void Linux: `xbps-install
+   protobuf`).
+ * Node and npm: Needed to run webpack for compiling and injecting
+   Typescript into various web pages (Void Linux: `xbps-install
+   nodejs`).
+ * Docker: Needed to run the grpc proxy (Void Linux `xbps-install
+   docker`).
+
+### Run Application
 
 Command line "instructions" to build and run the application:
 
 ```
+cargo run-script grpc-proxy # only required if proxy not already running
 cargo run
 ```
 
@@ -65,4 +90,15 @@ to update the SQLx data JSON file:
 cargo sqlx prepare -- --bin tenebrous
 ```
 
+### gRPC-Web Proxy
+
+The frontend web application makes use of the gRPC-Web protocol to
+call gPRC endpoints from the browser. This requires a proxy to
+translate the calls from the browser to HTTP2 calls gRPC understands.
+For development, executing the `cargo run-script grpc-proxy` command
+will start the envoy proxy recommended by Google's gRPC-Web project.
+
+The envoy configuration assumes you are on Linux. If you are using Mac
+OS or Windows, see the note in the envoy configuration.
+
 [rustup]: https://rust-lang.github.io/rustup/index.html

src/grpc.rs

@@ -0,0 +1,24 @@
+use crate::models::proto::cofd::api::cofd_api_server::{CofdApi, CofdApiServer};
+use crate::models::proto::cofd::api::UpdateSkillValueRequest;
+use crate::models::proto::cofd::cofd_sheet::Skill;
+use tonic::{transport::Server, Request, Response, Status};
+
+#[derive(Debug)]
+pub struct CofdApiService {
+    pub db: sqlx::SqlitePool,
+}
+
+#[tonic::async_trait]
+impl CofdApi for CofdApiService {
+    async fn update_skill_value(
+        &self,
+        request: Request<UpdateSkillValueRequest>, // Accept request of type HelloRequest
+    ) -> Result<Response<Skill>, Status> {
+        // Return an instance of type HelloReply
+        println!("Got a request: {:?}", request);
+
+        let reply = Skill::default();
+
+        Ok(Response::new(reply)) // Send back our formatted greeting
+    }
+}

src/main.rs

@@ -9,56 +9,36 @@ extern crate rocket_contrib;
 #[macro_use]
 extern crate serde_derive;
 
+use log::{error, info};
 use rocket_contrib::serve::StaticFiles;
 use rocket_contrib::templates::Template;
 use std::env;
+use tonic::transport::Server;
 
 pub mod catchers;
 pub mod db;
 pub mod errors;
+pub mod grpc;
 pub mod migrator;
 pub mod models;
 pub mod routes;
 
-async fn gin_and_tonic() -> Result<(), Box<dyn std::error::Error>> {
-    use crate::models::proto::cofd::api::cofd_api_server::{CofdApi, CofdApiServer};
-    use crate::models::proto::cofd::api::UpdateSkillValueRequest;
-    use crate::models::proto::cofd::cofd_sheet::Skill;
-    use tonic::{transport::Server, Request, Response, Status};
-
-    #[derive(Debug, Default)]
-    pub struct MyGreeter {}
-
-    #[tonic::async_trait]
-    impl CofdApi for MyGreeter {
-        async fn update_skill_value(
-            &self,
-            request: Request<UpdateSkillValueRequest>, // Accept request of type HelloRequest
-        ) -> Result<Response<Skill>, Status> {
-            // Return an instance of type HelloReply
-            println!("Got a request: {:?}", request);
-
-            let reply = Skill::default();
-
-            Ok(Response::new(reply)) // Send back our formatted greeting
-        }
-    }
-
+async fn make_tonic(db: sqlx::SqlitePool) -> Result<(), Box<dyn std::error::Error>> {
+    use crate::models::proto::cofd::api::cofd_api_server::CofdApiServer;
     let addr = "[::1]:9090".parse()?;
-    let greeter = MyGreeter::default();
+    let service = grpc::CofdApiService { db };
 
-    println!("Running tonic");
+    info!("Running Tonic");
     Server::builder()
-        .add_service(CofdApiServer::new(greeter))
+        .add_service(CofdApiServer::new(service))
         .serve(addr)
         .await?;
 
-    println!("ending tonic");
     Ok(())
 }
 
 async fn make_rocket(database: sqlx::SqlitePool) -> Result<(), Box<dyn std::error::Error>> {
-    println!("Running rocket");
+    info!("Running Rocket");
     let root_routes: Vec<rocket::Route> = {
         routes::root::routes()
             .into_iter()
@@ -72,7 +52,6 @@ async fn make_rocket(database: sqlx::SqlitePool) -> Result<(), Box<dyn std::erro
 
     rocket::ignite()
         .attach(Template::fairing())
-        //.attach(db::TenebrousDbConn::fairing())
         .manage(database)
         .mount("/", root_routes)
         .mount("/characters", character_routes)
@@ -106,15 +85,19 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     migrator::migrate(db_path).await?;
 
     let db = crate::db::create_pool(db_path).await?;
-    // let tonic = gin_and_tonic();
-    // let rocket = make_rocket(db);
 
     tokio::select! {
-        result = make_rocket(db) => {
-            println!("done with rocket: {:?}", result);
+        result = make_rocket(db.clone()) => {
+            match result {
+                Ok(_) => info!("Shutting down Rocket."),
+                Err(e) => error!("Rocket error: {}", e)
+            }
+        }
+        result = make_tonic(db) => {
+            match result {
+                Ok(_) => info!("Shutting down Tonic."),
+                Err(e) => error!("Tonic error: {}", e)
             }
-        result = gin_and_tonic() => {
-            println!("done with tonic: {:?}", result);
         }
     }