Add MutexExt trait

src/main.rs

@@ -58,6 +58,17 @@ type PeerMap = Arc<Mutex<HashMap<SocketAddr, Tx>>>;
 
 const FAUCET_AMT: Amount = Amount::from_sat(1000);
 
+pub(crate) trait MutexExt<T> {
+    fn lock_anyhow(&self) -> Result<MutexGuard<T>, Error>;
+}
+
+impl<T: Debug> MutexExt<T> for Mutex<T> {
+    fn lock_anyhow(&self) -> Result<MutexGuard<T>, Error> {
+        self.lock()
+            .map_err(|e| Error::msg(format!("Failed to lock: {}", e)))
+    }
+}
+
 enum BroadcastType {
     Sender(SocketAddr),
     ExcludeSender(SocketAddr),