feat: add config option for listen address and port

CCC-MF · Mar 14, 2024 · 7b36255 · 7b36255
1 parent 42b5189
commit 7b36255
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Showing 3 changed files with 19 additions and 2 deletions.
diff --git a/README.md b/README.md
@@ -25,13 +25,16 @@ Options:
           Kafka Topic [env: APP_KAFKA_TOPIC=] [default: etl-processor_input]
       --token <TOKEN>
           bcrypt hashed Security Token [env: APP_SECURITY_TOKEN=]
+      --listen <LISTEN>
+          Address and port for HTTP requests [env: APP_LISTEN=] [default: 0.0.0.0:3000]
 ```
 
 Die Anwendung lässt sich auch mit Umgebungsvariablen konfigurieren.
 
 * `APP_KAFKA_SERVERS`: Zu verwendende Kafka-Bootstrap-Server als kommagetrennte Liste
 * `APP_KAFKA_TOPIC`: Zu verwendendes Topic zum Warten auf neue Anfragen. Standardwert: `etl-processor_input`
 * `APP_SECURITY_TOKEN`: Verpflichtende Angabe es Tokens als *bcrypt*-Hash
+* `APP_LISTEN`: Adresse und Port für eingehende HTTP-Requests. Standardwert: `0.0.0.0:3000` - Port `3000` auf allen Adressen
 
 ## HTTP-Requests
 

diff --git a/src/cli.rs b/src/cli.rs
@@ -27,4 +27,11 @@ pub struct Cli {
         help = "bcrypt hashed Security Token"
     )]
     pub token: String,
+    #[arg(
+        long,
+        env = "APP_LISTEN",
+        default_value = "0.0.0.0:3000",
+        help = "Address and port for HTTP requests"
+    )]
+    pub listen: String,
 }
diff --git a/src/main.rs b/src/main.rs
@@ -58,8 +58,15 @@ async fn main() {
     #[cfg(debug_assertions)]
     let app = app.layer(TraceLayer::new_for_http());
 
-    let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await.unwrap();
-    axum::serve(listener, app).await.unwrap();
+    match tokio::net::TcpListener::bind(&CONFIG.listen).await {
+        Ok(listener) => {
+            log::info!("Starting application listening on '{}'", CONFIG.listen);
+            if let Err(err) = axum::serve(listener, app).await {
+                log::error!("Error starting application: {}", err)
+            }
+        }
+        Err(err) => log::error!("Error listening on '{}': {}", CONFIG.listen, err),
+    };
 }
 
 async fn check_basic_auth(request: Request<Body>, next: Next) -> Response {