fix hostname issue + config

Author: ajuvercr

README.md

@@ -6,4 +6,4 @@ Build: `docker build --tag pw:1.0 .`
 
 Run: `docker run --rm -p 8123:8123 -p 9142:9142 -p 3012:3012 -v $(pwd)/backend/games:/planetwars/backend/games --name planetwars pw:1.0`
 
-Add parameter `-e ROCKET_HOST_NAME=<domain>`, for example `-e ROCKET_HOST_NAME=mozaic.zeus.gent`, to set the domain used in the application.
+Add parameter `-e PW_HOST_NAME=<domain>`, for example `-e PW_HOST_NAME=mozaic.zeus.gent`, to set the domain used in the application.

backend/Cargo.toml

@@ -13,6 +13,8 @@ rand = { version = "0.7.3", default-features = true }
 async-std = { version = "1.7.0", features = ["attributes"] }
 futures = { version = "0.3.8", features = ["executor", "thread-pool"] }
 
+figment = "0.9.4"
+
 serde = "1.0.117"
 serde_derive = "1.0.117"
 serde_json = "1.0"

backend/README.md

@@ -1,5 +1,5 @@
 # Planetwars backend
 
-Change hostname in info slides with ROCKET_HOST_NAME env variable, or in `Rocket.toml`.
+Change hostname in info slides with PW_PORT, PW_HOST_NAME or PW_ADDRESS env variable.
 
 The main planetwars server that instanciates planetwars matches etc...

backend/Rocket.toml

@@ -11,6 +11,8 @@ extern crate futures;
 extern crate mozaic;
 extern crate rand;
 
+extern crate figment;
+
 extern crate tracing;
 extern crate tracing_futures;
 extern crate tracing_subscriber;
@@ -22,6 +24,7 @@ extern crate rocket_contrib;
 #[macro_use]
 extern crate educe;
 
+use figment::{providers::{Serialized, Env}};
 use tracing_subscriber::{EnvFilter, FmtSubscriber};
 
 use std::net::SocketAddr;
@@ -46,6 +49,24 @@ use rocket_contrib::templates::{Engines, Template};
 
 use std::collections::HashMap;
 
+/// Config for the planetwars server
+#[derive(Deserialize, Serialize, Debug)]
+pub struct PWConfig {
+    host_name: String,
+    address: String,
+    port: u16,
+}
+
+impl Default for PWConfig {
+    fn default() -> Self {
+        Self {
+            host_name: String::from("localhost"),
+            address: String::from("0.0.0.0"),
+            port: 8000,
+        }
+    }
+}
+
 /// Calculate viewbox from array of points (used in map preview), added to Tera engine.
 /// So this function can be called in template.
 fn calc_viewbox(value: &Value, _: &HashMap<String, Value>) -> tera::Result<Value> {
@@ -111,15 +132,20 @@ async fn rocket() -> rocket::Rocket {
     let mut routes = Vec::new();
     routes::fuel(&mut routes);
 
-    rocket::ignite()
+    let figment = rocket::Config::figment()
+        .merge(Serialized::defaults(PWConfig::default()))   // Extend but not overwrite
+        .merge(Env::prefixed("PW_"));                       // Overwrite
+
+    rocket::custom(figment)
         .manage(gm)
         .manage(pool)
         .manage(Games::new())
+        .attach(AdHoc::config::<PWConfig>())    // Manage the config
+        .mount("/", routes)
         .attach(AdHoc::on_attach("Assets Config", async move |rocket| {
-            // let host_name = rocket.config()
-            //     .get_string("host_name")
-            //     .unwrap_or("mozaic.zeus.gent".to_string());
-            let host_name = "mozaic.zeus.gent".to_string();
+            let pw_config = rocket.figment().extract::<PWConfig>().unwrap_or_default();
+            println!("PW Config {:?}", pw_config);
+            let host_name = pw_config.host_name.clone();
 
             let tera = Template::custom(move |engines: &mut Engines| {
                 engines.tera.register_filter("calc_viewbox", calc_viewbox);
@@ -129,7 +155,6 @@ async fn rocket() -> rocket::Rocket {
 
             Ok(rocket.attach(tera))
         }))
-        .mount("/", routes)
 }
 
 /// Creates the actual game_manager

backend/src/main.rs

@@ -16,9 +16,9 @@ How to connect
 
     <pre class="commands">
         <code>
-$ wget {{ "" | get_host_name}}/bot/runner.py
-$ wget {{ "" | get_host_name}}/bot/simple.py
-$ python3 runner.py -p 9142 --host {{ "" | get_host_name}}\
+$ wget {{ get_host_name() }}/bot/runner.py
+$ wget {{ get_host_name() }}/bot/simple.py
+$ python3 runner.py -p 9142 --host {{ get_host_name() }}\
     -n &lt;Your name&gt; -i &lt;Id from the lobby&gt; \
     python3 simple.py
         </code>