Add a server unavailable endpoint

Author: Quantumplation

crates/rpc/src/bin/metric_exporter/main.rs

@@ -103,6 +103,7 @@ async fn main() -> Result<()> {
             routes![
                 metrics_endpoint,
                 start_server,
+                server_unavailable,
                 start_game,
                 end_game,
                 player_joined,
@@ -133,6 +134,11 @@ fn start_server(state: &State<LocalState>) {
     state.metrics.start_server();
 }
 
+#[post("/server_unavailable")]
+fn server_unavailable(state: &State<LocalState>) {
+    state.metrics.server_unavailable();
+}
+
 #[post("/start_game")]
 fn start_game(state: &State<LocalState>) {
     state.metrics.start_game();

crates/rpc/src/bin/metric_exporter/metrics.rs

@@ -156,6 +156,12 @@ impl Metrics {
         self.game_state.set(GameState::Waiting.into());
         self.players_current.set(0);
     }
+    
+    pub fn server_unavailable(&self) {
+        self.game_state.set(GameState::Done.into());
+        self.games_current.set(0);
+        self.players_current.set(0);
+    }
 
     pub fn start_game(&self) {
         self.games_current.set(1);