cli: config --p2p-relay-loglevel into tracing filter

crates/cli/src/commands/relay.rs

@@ -12,6 +12,14 @@ use tracing::{error, info};
 /// once `BackgroundTaskController::shutdown` has been signalled.
 const LOKI_FLUSH_TIMEOUT: Duration = Duration::from_secs(3);
 
+fn relay_filter(base: &str, relay_level: &str) -> String {
+    if relay_level.is_empty() {
+        base.to_string()
+    } else {
+        format!("{base},libp2p_relay={relay_level}")
+    }
+}
+
 /// Arguments for the relay command.
 #[derive(clap::Args, Clone)]
 pub struct RelayArgs {
@@ -90,14 +98,19 @@ impl TryInto<pluto_relay_server::config::Config> for RelayArgs {
             }
         };
 
-        let log_config =
-            build_console_tracing_config(self.log.level.clone(), &self.log.color, loki_config);
+        let p2p_relay = self.relay.p2p_relay_log_level;
+
+        let log_config = build_console_tracing_config(
+            relay_filter(self.log.level.as_str(), &p2p_relay),
+            &self.log.color,
+            loki_config,
+        );
 
         let builder = pluto_relay_server::config::Config::builder()
             .data_dir(self.data_dir.data_dir)
             .http_addr(self.relay.http_address)
             .auto_p2p_key(self.relay.auto_p2p_key)
-            .libp2p_log_level(self.relay.p2p_relay_log_level)
+            .libp2p_log_level(p2p_relay)
             .max_res_per_peer(self.relay.max_res_per_peer)
             .max_conns(self.relay.max_conns)
             // Invert p2p-advertise-private-addresses flag boolean:
@@ -382,6 +395,8 @@ mod tests {
     use tokio::net;
     use tokio_util::sync::CancellationToken;
 
+    use crate::commands::relay::relay_filter;
+
     #[tokio::test]
     async fn run_bootnode() {
         with_relay_server(
@@ -640,4 +655,9 @@ mod tests {
             .build();
         request.retry(&mut backoff).await
     }
+    #[test]
+    fn relay_filter_works() {
+        assert_eq!(relay_filter("info", ""), "info");
+        assert_eq!(relay_filter("debug", "warn"), "debug,libp2p_relay=warn");
+    }
 }