updates

server/src/main.rs

@@ -11,6 +11,7 @@ use tonic::{transport::Server, Request, Response, Status};
 use tracing::{info, trace, warn};
 use tracing_subscriber::{filter::EnvFilter, fmt, prelude::*};
 use tracing_appender::non_blocking;
+use tracing_appender::non_blocking::WorkerGuard;
 use udev::{MonitorBuilder};
 
 use lesavka_server::{usb_gadget::UsbGadget, video};
@@ -22,29 +23,30 @@ use lesavka_common::lesavka::{
 };
 
 // ───────────────── helper ─────────────────────
-fn ensure_log_file() -> anyhow::Result<()> {
+fn init_tracing() -> anyhow::Result<WorkerGuard> {
+    // 1. create file writer + guard
     let file = std::fs::OpenOptions::new()
         .create(true).write(true).truncate(true)
         .open("/tmp/lesavka-server.log")?;
-    let (file_writer, _guard) = non_blocking(file);
-
-    let env_filter = EnvFilter::try_from_default_env()
-        .unwrap_or_else(|_| EnvFilter::new("lesavka_server=trace"));
+    let (file_writer, guard) = non_blocking(file);
 
+    // 2. build subscriber once
+    let env = EnvFilter::try_from_default_env()
+        .unwrap_or_else(|_| EnvFilter::new("lesavka_server=info"));
     let console_layer = fmt::layer()
         .with_target(true)
         .with_thread_ids(true);
-    let file_layer    = fmt::layer()
+    let file_layer = fmt::layer()
         .with_writer(file_writer)
         .with_ansi(false);
 
     tracing_subscriber::registry()
-        .with(env_filter)
+        .with(env)
         .with(console_layer)
         .with(file_layer)
         .init();
 
-    Ok(())
+    Ok(guard)
 }
 
 /*─────────────────── tonic service ─────────────────────*/
@@ -193,12 +195,7 @@ impl Relay for Handler {
 #[tokio::main(flavor = "multi_thread", worker_threads = 4)]
 async fn main() -> anyhow::Result<()> {
     /* logging */
-    ensure_log_file()?;
-    fmt().with_env_filter(
-        EnvFilter::try_from_default_env()
-            .unwrap_or_else(|_| EnvFilter::new("lesavka_server=info")),
-    )
-    .init();
+    let _log_guard = init_tracing()?;
 
     /* auto‑cycle task */
     // tokio::spawn(async { monitor_gc311_disconnect().await.ok(); });

server/src/video.rs

@@ -11,7 +11,7 @@ use tonic::Status;
 pub async fn spawn_camera(
     dev: &str,
     id: u32,
-    max_bitrate_kbit: u32,
+    _max_bitrate_kbit: u32,
 ) -> anyhow::Result<ReceiverStream<Result<VideoPacket, Status>>> {
     gst::init().context("gst init")?;