Add basic metrics to libp2p

beacon_node/eth2-libp2p/src/lib.rs

@@ -2,10 +2,14 @@
 /// all required libp2p functionality.
 ///
 /// This crate builds and manages the libp2p services required by the beacon node.
+#[macro_use]
+extern crate lazy_static;
+
 pub mod behaviour;
 mod config;
 mod discovery;
 pub mod error;
+mod metrics;
 pub mod rpc;
 mod service;